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HT9320 Series

22-Memory Tone/Pulse Dialer

July 21, 1999

Features

Universal specification

Operating voltag0e: 2.0V~5.5V

Low standby current

Lowmemoryretentioncurrent:0.1mA(typ.)

Tone/pulse switchable

Interface with LCD driver

32 digits for redialing

32 digits for the SA memory dialing

One-key redialing

Pause and P®T key for PBX

3.58MHz crystal or ceramic resonator

Hand-free control

Hold-line control

Pause, P®T can be saved for redialing

On-hook store function

Keytone function

Lock function

Resistor options

M/B ratio

Flash function and flash time

Pause and P®T duration

Pulse number

Inter-digit pause time for 10pps

Memory number: 22 memories

General Description

The HT9320 series tone/pulse dialers are

CMOS LSI for telecommunication systems.

They are designed to meet various dialing spec-

ifications through resistor option matrix.
The HT9320 series are offered in six different

versions. The different functions of the six ver-

sions are listed in the selection table. The

HT9320A, HT9320H versions provide the

on-hook store function; the HT9320B version

provides the LCD interface function; the

HT9320K version provides the keytone func-

tion; the HT9320L version provides both the

LCD interface function and IDD lock function.

The six versions also supply the hold-line and

hand-free functions, which are suitable for feature

phone applications.
HT9320 series provide SA, Redial and 20

one-touch/two-touch memory dialing. If the

keyboard includes M1~M20 keys it can be used

as one-touch memory dialing. Otherwise, it

works as two-touch (PAGE®M1~M10) or

three-touch(A®PAGE®0~9) memory dialing

for speed dialing in either pulse or tone mode.

Patent Number: 64097, 86474, 113235(R.O.C.), 5424740(U.S.A.)

Selection Table

Function

Memory

Dialing

Hold-

Line

Hand-

Free

LCD

Interface

Flash

Function

Flash

Time

(ms)

Pulse

No.

Tone

Dura-

tion

(ms)

Inter-

Tone-

Pause

(ms)

M/B

Pin

IDD

Lock

Key-

Tone

Output

On-

Hook

Store

Package

Part No.

HT9320A

SA, R

M1~M20

Control

600

N+1

10-N

82.5

85.5

28 DIP

Digit

600/300/98

HT9320B

SA, R

M1~M20

Control

600

N+1

10-N

82.5

85.5

28 DIP

Digit

600/300/98

HT9320C

SA, R

M1~M20

Control

600

N+1

10-N

82.5

85.5

22SKDIP

Digit

600/300/98

HT9320H

SA, R

M1~M20

Digit

600/100

82.5

28 DIP

HT9320K

SA, R

M1~M20

Control

600

N+1

10-N

82.5

85.5

28 DIP

Digit

600/300/98

HT9320L

SA, R

M1~M20

Control

600

N+1

10-N

82.5

85.5

28 DIP

Digit

600/300/98

HT9320L-X The same as HT9320L, but the voltage polarity of the row group and the column group are reversed.

Pin Assignment

HT9320

July 21, 1999

2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
1 9
1 8
1 7
1 6
1 5

1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4

C 7
C 6
C 5
C 4
C 3
C 2
C 1
P O
H F O
X M U T E
D T M F
H D I
H D O
V S S

2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
1 9
1 8
1 7
1 6
1 5

1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4

C 7
C 6
C 5
C 4
C 3
C 2
C 1
P O
H F O
X M U T E
D T M F
H D I
H D O
V S S

C 8

D O U T

R 1
R 2
R 3
R 4
R 5

H K S

C L O C K

H F I

M O D E

X 1
X 2

V D D

2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
1 9
1 8
1 7
1 6
1 5

1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4

C 7
C 6
C 5
C 4
C 3
C 2
C 1
P O
H F O
X M U T E
D T M F
H D I
H D O
V S S

C 8
K T
R 1
R 2
R 3
R 4
R 5

H K S

N C

H F I

M O D E

X 1
X 2

V D D

C 8

H S T

R 1
R 2
R 3
R 4
R 5

H K S

M / B

H F I

M O D E

X 1
X 2

V D D

2 2
2 1
2 0
1 9
1 8
1 7
1 6
1 5
1 4
1 3
1 2

1
2
3
4
5
6
7
8
9
1 0
1 1

C 8
R 1
R 2
R 3
R 4
R 5

H K S

M O D E

X 1
X 2

V D D

C 7
C 6
C 5
C 4
C 3
C 2
C 1
P O
X M U T E
D T M F
V S S

H T 9 3 2 0 A / H

2 8 D I P

H T 9 3 2 0 B / L / L - X

2 8 D I P

H T 9 3 2 0 C

2 2 S K D I P

H T 9 3 2 0 K

2 8 D I P

Keyboard Information

HT9320A/B/C/K/L

HT9320H

Memory dialing vs. keyboard form table

Dialing

Output

One-Touch

Memory Keyboard

Two-Touch

Memory Keyboard

Three-Touch

Memory Keyboard

M1~M10

M1 ~ M10

a (a=1~9, 0)

M11~M20

M11 ~ M20

PAGE Ma (Ma=M1~M10)

A PAGE a (a=1~9, 0)

HT9320

July 21, 1999

C 1

C 2

C 3

C 4

C 5

C 6

R 1

R 2

R 3

R 4

R 5

C 1

C 2

C 3

C 4

C 5

C 7

C 8

C 6

R 1

R 2

R 3

R 4

R 5

· O n e - t o u c h m e m o r y k e y b o a r d

· T w o - t o u c h m e m o r y k e y b o a r d

· T h r e e - t o u c h m e m o r y k e y b o a r d

R 1

R 2

R 3

R 4

R 5

C 1

C 2

C 3

C 4

M 1 6

M 1 7

M 1 8

M 1 9

M 2 0

M 6

M 7

M 8

M 9

M 1 0

M 1 1

M 1 2

M 1 3

M 1 4

M 1 5

M 1

M 2

M 3

M 4

M 5

S A

* / T

M 6 /

M 7 /

M 8 /

M 9 /

M 1 0 /

M 1 6

M 1 7

M 1 8

M 1 9

M 2 0

M 1 1

M 1 2

M 1 3

M 1 4

M 1 5

M 1 /

M 2 /

M 3 /

M 4 /

M 5 /

P A G E

S A

* / T

S T

P A G E

S A

* / T

C 1

C 2

C 3

C 4

C 5

C 6

R 1

R 2

R 3

R 4

R 5

C 1

C 2

C 3

C 4

C 5

C 7

C 8

C 6

R 1

R 2

R 3

R 4

R 5

· O n e - t o u c h m e m o r y k e y b o a r d

· T w o - t o u c h m e m o r y k e y b o a r d

· T h r e e - t o u c h m e m o r y k e y b o a r d

R 1

R 2

R 3

R 4

R 5

C 1

C 2

C 3

C 4

M 1 6

M 1 7

M 1 8

M 1 9

M 2 0

M 6

M 7

M 8

M 9

M 1 0

M 1 1

M 1 2

M 1 3

M 1 4

M 1 5

M 1

M 2

M 3

M 4

M 5

S A

M 6 /

M 7 /

M 8 /

M 9 /

M 1 0 /

M 1 6

M 1 7

M 1 8

M 1 9

M 2 0

M 1 1

M 1 2

M 1 3

M 1 4

M 1 5

M 1 /

M 2 /

M 3 /

M 4 /

M 5 /

P A G E

S A

P ® T

S T

R / P

P A G E

S A

P ® T

S T

R / P

P ® T

S T

R / P

Pin Description

Pin Name I/O

Internal

Connection

Description

C1~C8

R1~R5

I/O

CMOS

IN/OUT

These pins form a 5´8 keyboard matrix which can perform

keyboard input detection and dialing specification setting

functions. When on-hook (HKS=high) all the pins are set high.

While off-hook the column group (C1~C8) remains low and the

row group (R1~R5) is set high for key input detection.

For the HT9320L-X, the column group remains high and the

row group is set low for key input detection.

An inexpensive single contact 5´8 keyboard can be used as an

input device. Pressing a key connects a single column to a sin-

gle row, and actuates the system oscillator that results in a di-

aling signal output. If more than two keys are pressed at the

same time, no response occurs. The key-in debounce time is

20ms. Refer to the keyboard information for keyboard ar-

rangement and to the functional description for dialing speci-

fication selection.

OSCILLATOR

The system oscillator consists of an inverter, a bias resistor

and the necessary load capacitor on chip. Connecting a stan-

dard 3.579545MHz crystal or ceramic resonator to the X1 and

X2 terminals can implement the oscillator function. The oscil-

lator is turned off in the standby mode, and is actuated when-

ever a keyboard entry is detected.

XMUTE

NMOS OUT

XMUTE is an NMOS open drain structure pulled to VSS dur-

ing dialing signal transmission. Otherwise, it is an open cir-

cuit. XMUTE is used to mute the speech circuit when

transmitting the dial signal.

HKS

CMOS IN

This pin is used to monitor the status of the hook-switch and its

combination with HFI/HDI can control the PO pin output to

makeorbreaktheline.

HKS=VDD:On-hookstate(PO=low).ExceptforHFI/HDI

(hand-free/hold-lineco ntrolinput),other

functionsarealldisabled.

HKS=VSS:Off-hookstate(PO=high).The chipisinthestand-

bymodeandreadytoreceivethekeyinput.

CMOS OUT

This pin is a CMOS output structure which by receiving the

HKS and HFO/HDO signals, control the dialer to connect or

disconnect the telephone line.

PO outputs a low to break line when HKS is high (on-hook)

and HFO/HDO is low. PO outputs a high to make line when

HKS is low (off-hook) or HFO is high or HDO is high.

During the off-hook state, this pin also outputs the dialing

pulse train in pulse mode dialing. While in the tone mode, this

pin is always high.

HT9320

July 21, 1999

Pin Name I/O

Internal

Connection

Description

MODE

I/O

CMOS

IN/OUT

This is a three-state input/output pin, used for dialing mode

selection, either Tone mode or Pulse mode, 10pps/20pps

MODE=VDD: Pulse mode, 10pps

MODE=OPEN: Pulse mode, 20pps

MODE=VSS: Tone mode

During the pulse mode dialing, switching this pin to the tone

mode changes the subsequent digit entry to the tone mode.

When the chips are in tone mode, switching to the pulse mode

will also be recognized.

DTMF

CMOS OUT

This pin is active only when the chip transmits tone dialing

signals. Otherwise, it always outputs a low. The pin outputs

tone signals to drive the external transmitter amplifier cir-

cuit. The load resistor should not be less than 5kW.

HDI

CMOS IN

Pull-high

This pin is a schmitt trigger input structure. Active low. Ap-

plying a negative going pulse to this pin can toggle the HDO out-

put once.

An external RC network is recommended for input

debouncing. The pull-high resistance is 200kW typ.

HDO

CMOS OUT

The HDO is a CMOS output structure. Its output is toggle- con-

trolled by a negative transition on HDI. When HDO is toggled

high, PO keeps high to hold the line. The hold function can be re-

leased by setting HFO high or by an on-off hook operation or by

another HDI input. The HDO pin can directly drive the HT3810

series melody generator to produce a hold-line background mel-

ody. Refer to the functional description for the hold-line func-

tion.

HFI

CMOS IN

Pull-low

This pin is a schmitt trigger input structure. Active high. Ap-

plying a positive going pulse to HFI can toggle the HFO once

and hence control the hand-free function.

An external RC network is recommended for input

debouncing. The pull-low resistance of HFI is 200kW typ.

HFO

CMOS OUT

The HFO is a CMOS output structure. Its output is toggle-

controlled by a positive transition on the HFI pin. When HFO

is high, the hand-free function is enabled and PO outputs a

high to connect the line.

The hand-free function can be released by an on-off-hook oper-

ation or by another HFI input or by setting HDO high. Refer to

the functional description for the hand-free function opera-

tion.

DOUT

NMOS OUT

NMOS open drain output pin. It outputs the BCD code of the

dialing digits to the LCD driver chip (HT16XX series) or mC for

dialing number display. Refer to the functional description for

the detailed timing.

HT9320

July 21, 1999

Pin Name I/O

Internal

Connection

Description

CLOCK

NMOS OUT

NMOS open drain output. When dialing, it outputs a series of

pulse trains for DOUT data synchronization. DOUT data is

valid at the falling edge of clock.

VDD

Positive power supply, 2.0V~5.5V for normal operation

VSS

Negative power supply

HST

CMOS IN

Pull-low

(HT9320A)

On-hook store enable input

HST=VDD: On-hook store (HT9320A/H)

HST=Floating: Off-hook store (HT9320A)

HST=VSS: Off-hook store (HT9320H)

The Pull-low resistance is 200kW typ.

CMOS IN

(HT9320H)

M/B

CMOS IN

Pull-high

(HT9320A)

Make/Break ratio selection

M/B=VSS: 33.3/66.6 (HT9320A)

M/B=Floating: 40/60 (HT9320A)

M/B=VDD: 33.3/66.6 (HT9320H)

M/B=VSS: 40/60 (HT9320H)

The pull-high resistance is 200kW typ.

CMOS IN

(HT9320H)

CMOS OUT

Keytone output pin. Outputs a 1.2kHz tone carrier for 34ms

each time a key is pressed in the pulse mode.

Approximate internal connection circuits

HT9320

July 21, 1999

N M O S O U T

V D D

C M O S I N / O U T

C M O S O U T

C M O S I N

P u l l - l o w

C M O S I N

P u l l - h i g h

C M O S I N

O S C I L L A T O R

X 1

X 2

E N

1 0 M

2 0 p F

1 0 p F

V D D

Absolute Maximum Ratings

Supply Voltage ................................-0.3V to 6V

Storage Temperature ................-50°C to 125°C

Input Voltage .................. V

-0.3 to V

+0.3V

Operating Temperature .............-20°C to 75°C

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi-

mum Ratings² may cause substantial damage to the device. Functional operation of this device

at other conditions beyond those listed in the specification is not implied and prolonged expo-

sure to extreme conditions may affect device reliability.

Electrical Characteristics

OSC

=3.5795MHz, Ta=25°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max. Unit

Conditions

Operating Voltage

5.5

Operating Current

2.5V

Pulse Off-hook

Keypad entry

No load

0.2

Tone

0.6

STB

Standby Current

1V On-hook, no load

No entry

Memory Retention Voltage

5.5

Memory Retention Current 1V On-hook

0.1

0.2

Input Low Voltage

0.2V

Input High Voltage

0.8V

XMO

XMUTE Leakage Current

XMUTE

=12V

No entry

OLXM

XMUTE Sink Current

2.5V V

XMUTE

=0.5V

HKS

HKS Pin Input Current

2.5V V

HKS

=2.5V

0.1

HFI

HFI Pull-low Resistance

2.5V V

HFI

=2.5V

200

HDI

HDI Pull-high Resistance

2.5V V

HDI

=0V

200

M/B

M/B Pull-high Resistance

2.5V V

M/B

=0V

200

HST

HST Pull-low Resistance

2.5V V

HST

=2.5V

200

OH1

Keypad Pin Source Current 2.5V V

=0V

-4

-40

OL1

Keypad Pin Sink Current

2.5V V

=2.5V

200

400

OH2

HFO Pin Source Current

2.5V V

=2V

-1

OL2

HFO Pin Sink Current

2.5V V

=0.5V

OH3

HDO Pin Source Current

2.5V V

=2V

-1

OL3

HDO Pin Sink Current

2.5V V

=0.5V

OH4

KT Pin Source Current

2.5V V

=2V

-1

OL4

KT Pin Sink Current

2.5V V

=0.5V

HT9320

July 21, 1999

Symbol

Parameter

Test Conditions

Min.

Typ.

Max. Unit

Conditions

Pause Time After Flash

Control key

0.2

Digit key

Pause Time for One-key

Redialing

One-key redialing

Key-in Debounce Time

BRK

Break Time for One-key

Redialing

One-key redialing

1.2

OSC

System Frequency

Crystal=3.5795MHz 3.5759 3.5795 3.5831 MHz

Pulse Mode Electrical Characteristics

OSC

=3.5795MHz, Ta=25°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max. Unit

Conditions

POH

PO Output Source

Current

2.5V V

=2V

-0.2

POL

PO Output Sink

Current

2.5V V

=0.5V

0.2

0.6

Pulse Rate

MODE pin is connected to V

pps

MODE pin is opened

M/B

Make/Break Ratio

A resistor is linked between

R2 and C1 (HT9320B/C/K/L)

33:66

M/B=VSS (HT9320A)
M/B=VDD (HT9320H)
No resistor is linked between

R2 and C1 (HT9320B/C/K/L)

40:60

M/B=Floating (HT9320A)
M/B=VSS (HT9320H)

PDP

Pre-digit-pause

Time

M/B ratio=40:60

40 (10pps)

20 (20pps)

M/B ratio=33:66

33 (10pps)

17 (20pps)

HT9320

July 21, 1999

Symbol

Parameter

Test Conditions

Min.

Typ.

Max. Unit

Conditions

IDP

Inter-digit-pause

Time

Pulse rate=10pps. No resistor

is linked between R1 and C5

(HT9320A/B/C/K)

800

Pulse rate=10pps (HT9320H/L)
Pulse rate=10pps. A resistor

is linked between R1 and C5

(HT9320A/B/C/K)

400

Pulse rate=20pps

500

Pulse Make

Duration

A resistor is linked between

R2 and C1 (HT9320B/C/K/L)

33 (10pps)

17 (20pps)

M/B=VSS (HT9320A)
M/B=VDD (HT9320H)
No resistor is linked between

R2 and C1 (HT9320B/C/K/L)

40 (10pps)

20 (20pps)

M/B=Floating (HT9320A)
M/B=VSS (HT9320H)

pulse Break

Duration

A resistor is linked between

R2 and C1 (HT9320B/C/K/L)

66 (10pps)

33 (20pps)

M/B=VSS (HT9320A)
M/B=VDD (HT9320H)
No resistor is linked between

R2 and C1 (HT9320B/C/K/L)

60 (10pps)

30 (20pps)

M/B=Floating (HT9320A)
M/B=VSS (HT9320H)

Keytone Duration

¾ Pulse mode (HT9320K)

KTC

Keytone Carrier

¾ Pulse mode (HT9320K)

1.2

kHz

Tone Mode Electrical Characteristics

OSC

=3.5795MHz, Ta=25°C

Symbol

Parameter

Test Conditions

Min.

Typ. Max. Unit

Conditions

TDC

DTMF Output DC Level

0.45V

0.7V

TOL

DTMF Sink Current

2.5V V

DTMF

=0.5V

0.1

TAC

DTMF Output AC Level

¾ Row group, R

=5kW

0.12

0.155 0.18

Vrms

DTMF Output Load

2.5V THD£-23dB

Column Pre-emphasis

2.5V Row group=0dB

HT9320

July 21, 1999

Symbol

Parameter

Test Conditions

Min.

Typ. Max. Unit

Conditions

THD

Tone Signal Distortion

2.5V R

=5kW

-30

-23

TMIN

Minimum Tone Duration

¾ Auto-redial

82.5

ITPM

Minimum Inter-tone Pause

¾ Auto-redial

85.5

THD (Distortion) (dB) = 20 log ( V1

Vn / Vi

)

Vi, Vh: Row group and column group signals

V1, V2, ... Vn: Harmonic signals (BW=300Hz~3500Hz)

HT9320

July 21, 1999

Functional Description

Keyboard matrix

C1~C8 and R1~R5 form a keyboard matrix. To-

gether with a standard 5´8 keyboard, the key-

board matrix is used for dialing entries. In

addition, the keyboard matrix also provides resis-

tor options for different dialing specification se-

lections. The keyboard arrangement for the

HT9320 series are shown in the Keyboard In-

formation.

Tone frequency

Tone

Name

Output

Frequency (Hz)

% Error

Specified Actual

697

699

+0.29%

770

766

-0.52%

852

847

-0.59%

941

948

+0.74%

1209

1215

+0.50%

1336

1332

-0.30%

1477

1472

-0.34%

Note:%Errordoesnotcontainthecrystalfrequency

drift

Dialing specification selection
Various dialing specifications can be selected by

adding resistors across keyboard matrix pins.

The allowable option resistor connections are

shown on the table.

All the resistors are 330kW. The resistor option

functions and the default specifications (with-

outoptionresistors)arelistedbelow(HT9320A/

B/C/K/L).

Option

Resistor

Option

Function

Default

(No Resistor)

K12

(HT9320B/

C/K/L)

Ratio Selection

40:60

K13

Flash Function

/Time Selection

Flash= control

function

Flash time=

600ms

K14

K21

Pause & P®T

Duration

Selection

= 3.6s

P®T

= 3.6s

K31

Pulse Number

Selection

K41

K51

(HT9320A

/B/C/K)

Inter-digit-

Pause Time for

10pps

800ms

R 1

R 2

R 3

R 4

K 2 1

C 1

C 2

C 3

C 4

C 5

C 6

C 7

K 3 1

K 4 1

K 5 1

K 6 1

K 7 1

K 1 2

K 1 3

K 1 4

HT9320

July 21, 1999

Option

Resistor

Option

Function

Default

(No Resistor)

K51

K61

K71

(HT9320L)

International

Direct Dialing

Lock Selection

Normal dialing

(unlock)

M/B ratio selection table

HT9320A

M/B Pin

M/B Ratio (%)

VSS

33.3:66.6

Floating

40:60

HT9320B/C/K/L

K12

M/B Ratio (%)

40:60

Yes

33.3:66.6

HT9320H

M/B Pin

M/B Ratio (%)

VDD

33.3:66.6

VSS

40:60

Flash function/time (duration) selection table

HT9320A/B/C/K/L

K13

K14

Flash

Function

Flash

Time (T

)

Control

600ms

Yes

Digit

600ms

Yes

Digit

98ms

Yes

Digit

300ms

HT9320H

M/B Pin

Flash

Function

Flash Time

)

VSS

Digit

600ms

VDD

Digit

100ms

Pause and P®T duration selection table

HT9320A/B/C/K/L

K21

(sec)

P®T

(sec)

3.6

Yes

HT9320H

(sec)

P®T

(sec)

3.6

Pulse number selection table

HT9320A/B/C/K/L

K31

K41

Pulse

Number

Yes

N+1

Yes

10-N

Yes

HT9320H

Pulse Number

Inter-digit-pause time for 10pps

HT9320A/B/C/K

K51

Inter-digit pause time

800ms

Yes

400ms

HT9320H/L

Inter-digit pause time

800ms

HT9320

July 21, 1999

Pulse number table

Keypad

Output Pulse Number

Digit Key

10-N

N+1

*/T

P®T

Ignored

DOUT BCD code
When dialing, the corresponding 4-bit BCD

codes are serially presented on DOUT from

MSB to LSB. The data of DOUT is valid at the

falling edge of the CLOCK pin. The following

table lists the BCD codes corresponding to the

keyboard input.

Key-In BCD Code Key-In BCD Code

0001

1000

0010

1001

0011

1010

0100

*/T

1101

0101

1100

0110

1011

0111

1110

On hook store (HT9320A/H)
When the external power supply (2V~5.5V) is

used and the HST pin is connected to VDD, the

user can store dialing numbers to the memories

(M1~M20) during on-hook state.

On/Off hook store selection table

HST Pin

Hook Store Mode

VDD (HT9320A/H)

On-hook store

Floating (HT9320A)

Off-hook store

VSS (HT9320H)

Off-hook store

Lock function (HT932L)
This function aims to detect lock dialing num-

bers to prevent from an unauthorized long dis-

tance call. The dialing output of this chip is

disabled if the first input key after on-off hook is

the lock number when the lock function is en-

abled.

International direct dialing lock (IDD lock) se-

lection table

K51

K61

K71

Lock Function

No Normal dialing without

lock function

Yes To lock 0

Yes

To lock 0, 9

Yes

IDD lock operation by the

telephone keyboard.

(See keyboard operation)

Note: ²¾² stands for ²don¢t care²

Hand-free function operation

Hand-free function execution
When HFO is low, a rising edge triggers the

HFI, enabling the Hand-free function (HFO

becomes high).

Reset Hand-free function
When HFO is high, the Hand-free function is

enabled and can be reset by:

Off-hook

Applying a rising edge to HFI

Changing the HDO pin from low to high

HT9320

July 21, 1999

Hand-free function table

Hold-line function operation

Hold-line function execution
When HDO is low, a falling edge triggers the

HDI, enabling the Hold-line function (HDO

becomes high). The XMUTE remains low

when HDO is high.

Reset Hold-line function
When HDO is high, the Hold-line function is

enabled and can be reset by:

Off-hook

Applying a falling edge to HDI

Changing the HFO pin from low to high

Hold-line function table

Key definition

0,1,2,3,4,5,6,7,8,9 keys
These are dialing number input keys for both

the pulse mode and the tone mode operations.

*/T
This key executes the P®T function and wait

a T

P®T

duration in the pulse mode. On the

other hand, the */T key executes the * func-

tion in the tone mode.

* (HT9320H)
The * key executes the * tone output function

in the tone mode. No response in the pulse

mode.

P®T
The key executes the P®T function in the

pulse mode. No response in the tone mode.

#
This is a dialing signal key for the tone mode

only, no response in the pulse mode.

C u r r e n t S t a t e

I n p u t

N e x t S t a t e

H K S

H F O

H D O

H F I

H K S

A n

H F O

A n

H D O

A n

H D I

H :

L :

L o g i c H I G H
L o g i c L O W

X :

A n :

D o n ' t c a r e
U n c h a n g e d

:
:

R i s i n g e d g e
F a l l i n g e d g e

C u r r e n t S t a t e

I n p u t

N e x t S t a t e

H K S

H D O

H F O

H D I

H K S

A n

H D O

A n

H F O

A n

H F I

H :

L :

L o g i c H I G H
L o g i c L O W

X :

A n :

D o n ' t c a r e
U n c h a n g e d

:
:

R i s i n g e d g e
F a l l i n g e d g e

HT9320

July 21, 1999

SA
Pressing this key can save the preceding dial-

ing telephone numbers. The saved number is

redialed if it is pressed again. SAwill also redial

the saved number if it is the first key pressed at

the off-hook state. During the dialing signal

transmission, the SA key is inhibited.

F
The flash key can be selected as a digit or as a

control key by the option resistors R

K13

& R

K14.

Pressing the flash key will force the PO pin to

be ²low² for the T

duration and is then fol-

lowed by T

(sec). T

can also be selected by

K13

, R

K14

P
Pause key. The execution of this key can

pause the output for the T

duration. T

can

be selected by R

K21

R
Redial key. Executes redialing as well as

one-key redial function.

R/P
Redial and pause function key. If it is pressed

as the first key after off-hook, this key exe-

cutes the redial function. Otherwise, it works

as the pause key.

ST
Store key. The execution of this key actuates

the store memory function with (or without)

dialing output. During the dialing signal

transmission, the ST key is inhibited.

A
Auto key. When this key is pressed before

pressing any one of the digital keys (0~9) it

executes the two-touch/ three-touch memory

dialing function.

PAGE
M11~M20 are represented by pressing the

PAGE key an.d the digital keys (0~9) or

M1~M10. That is to say, A PAGE digit key

(0~9) or PAGE®M1~M10 executes M11~M20

memorydialing.

M1~M20
One-touch memory dialing for speed-dialing

in either pulse or tone mode.

Keyboard operation
The following operations are described under an on-off-hook or on-hook condition with the hand-free active

condition.

HT9320

July 21, 1999

- P u l s e m o d e

( a ) w i t h o u t * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n
R M : D 1 D 2 . . . D n
S A M : U n c h a n g e d

( b ) w i t h * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n T

P ® T

D n + 1 . . . D m

R M : D 1 D 2 . . . D n * / T D n + 1 . . . D m
S A M : U n c h a n g e d

T o n e

P u l s e

K e y b o a r d i n p u t : D 1 D 2 . . . D n * / T D n + 1 . . .

· N o r m a l d i a l i n g

D m

( a ) w i t h o u t * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n
R M : D 1 D 2 . . . D n
S A M : U n c h a n g e d

( b ) w i t h * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n * D n + 1 . . . D m
R M : D 1 D 2 . . . D n * D n + 1 . . . D m
S A M : U n c h a n g e d

- T o n e m o d e

K e y b o a r d i n p u t : D 1 D 2 . . . D n

( a ) w i t h o u t * / T , P ® T

D i a l i n g o u t p u t : D 1 D 2 . . . D n
R M : U n c h a n g e d
S A M : U n c h a n g e d

R M c o n t e n t : D 1 D 2 . . . D n

( b ) w i t h * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n T

P ® T

D n + 1 . . . D m

R M : U n c h a n g e d
S A M : U n c h a n g e d

R M c o n t e n t : D 1 D 2 . . . D n * / T D n + 1 . . . D m

D i a l i n g o u t p u t : D 1 D 2 . . . D n
R M : U n c h a n g e d
S A M : U n c h a n g e d

R M c o n t e n t : D 1 D 2 . . . D n

( b ) w i t h * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n * D n + 1 . . . D m
R M : U n c h a n g e d
S A M : U n c h a n g e d

R M c o n t e n t : D 1 D 2 . . . D n * / T D n + 1 . . . D m

- P u l s e m o d e

- T o n e m o d e

K e y b o a r d i n p u t : R

( a ) w i t h o u t * / T , P ® T

K e y b o a r d i n p u t : R

P u l s e

T o n e

· R e d i a l

N o t e : T h e m a x i m u m c a p a c i t y o f t h e R M m e m o r y i s 3 2 d i g i t s . W h e n m o r e t h a n 3 2 d i g i t s a r e e n t e r e d , t h e s i g n a l i s

t r a n s m i t t e d b u t t h e r e d i a l f u n c t i o n i s i n h i b i t e d .

K e y b o a r d i n p u t : D 1 D 2 . . . D n * / T D n + 1 . . .

D m

K e y b o a r d i n p u t : D 1 D 2 . . . D n

K e y b o a r d i n p u t : [ R o r R / P ]

N o t e : I f t h e d i a l i n g n u m b e r e x c e e d s 3 2 d i g i t s , r e d i a l i n g i s i n h i b i t e d a n d P O = V D D

HT9320

July 21, 1999

K e y b o a r d i n p u t : D 1 D 2 . . . D n * / T D n + 1 . . .

D m

K e y b o a r d i n p u t : D 1 D 2 . . . D n * / T D n + 1 . . .

D m S A

( a ) w i t h o u t * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n T

B R K

R P

R M : D 1 D 2 . . . D n
S A M : U n c h a n g e d

( b ) w i t h * / T

R M : D 1 D 2 . . . D n * / T D n + 1 . . . D m
S A M : U n c h a n g e d

( a ) w i t h o u t * / T

R M : D 1 D 2 . . . D n
S A M : U n c h a n g e d

( b ) w i t h * / T

- T o n e m o d e

- P u l s e m o d e

P u l s e

B R K

R P

D 1 D 2 . . . D n T

P T

P u l s e

D i a l i n g o u t p u t : D 1 D 2 . . . D n * D n + 1 . . . D m

R M : D 1 D 2 . . . D n * D n + 1 . . . D m
S A M : U n c h a n g e d

B R K

R P

D 1 D 2 . . . D n * D n + 1

. . . D m

P u l s e

T o n e

D i a l i n g o u t p u t : D 1 D 2 . . . D n T

P ® T

D n + 1 . . . D m

T o n e

· O n e - k e y r e d i a l

K e y b o a r d i n p u t : D 1 D 2 . . . D n R

( a ) w i t h o u t * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n
R M : D 1 D 2 . . . D n
S A M : D 1 D 2 . . . D n

( b ) w i t h * / T

R M : D 1 D 2 . . . D n * / T D n + 1 . . . D m
S A M : D 1 D 2 . . . D n * / T D n + 1 . . . D m

( a ) w i t h o u t * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n
R M : D 1 D 2 . . . D n
S A M : D 1 D 2 . . . D n

( b ) w i t h * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n * D n + 1 . . . D m
R M : D 1 D 2 . . . D n * D n + 1 . . . D m
S A M : D 1 D 2 . . . D n * D n + 1 . . . D m

- P u l s e m o d e

- T o n e m o d e

K e y b o a r d i n p u t : D 1 D 2 . . . D n S A

D i a l i n g o u t p u t : D 1 D 2 . . . D n T

P ® T

D n + 1 . . . D m

T o n e

P u l s e

· S A c o p y

K e y b o a r d i n p u t : D 1 D 2 . . . D n S A

D i a l i n g o u t p u t : D 1 D 2 . . . D n T

D n + 1 . . . D m

R M : D 1 D 2 . . . D n P D n + 1 . . . D m
S A M : U n c h a n g e d

· P a u s e

D 1 D 2 . . . D n

P u l s e

D i a l i n g o u t p u t : D 1 D 2 . . . D n T

B R K

R P

D 1 D 2

. . . D n

D n + 1 . . . D m

K e y b o a r d i n p u t : D 1 D 2 . . . D n * / T D n + 1 . . .

D m S A

N o t e : T h e m a x i m u m c a p a c i t y o f t h e R M m e m o r y i s 3 2 d i g i t s . W h e n m o r e t h a n 3 2 d i g i t s p l u s t h e " S A " k e y

a r e e n t e r e d , t h e S A V E f u n c t i o n w i l l n o t b e e x e c u t e d , a n d a l l t h e e x i s t i n g d a t a i n t h e s a v e m e m o r y

w i l l n o t b e c h a n g e d .

K e y b o a r d i n p u t : D 1 D 2 . . . D n * / T D n + 1 . . .

D m

K e y b o a r d i n p u t : D 1 D 2 . . . D n [ P o r R / P ] D n + 1 . . . D m

N o t e : I f t h e d i a l i n g n u m b e r e x c e e d s 3 2 d i g i t s , r e d i a l i n g i s i n h i b i t e d a n d P O = V D D

HT9320

July 21, 1999

( a ) w i t h o u t * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n
R M : U n c h a n g e d
S A M : U n c h a n g e d

( b ) w i t h * / T

R M : U n c h a n g e d
S A M : U n c h a n g e d

( a ) w i t h o u t * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n
R M : U n c h a n g e d
S A M : U n c h a n g e d

( b ) w i t h * / T

D i a l i n g o u t p u t : D 1 D 2 . . . D n * D n + 1 . . . D m
R M : U n c h a n g e d
S A M : U n c h a n g e d

S A M c o n t e n t : D 1 D 2 . . . D n

S A M c o n t e n t : D 1 D 2 . . . D n * / T D n + 1 . . . D m

S A M c o n t e n t : D 1 D 2 . . . D n

S A M c o n t e n t : D 1 D 2 . . . D n * D n + 1 . . . D m

- P u l s e m o d e

- T o n e m o d e

D i a l i n g o u t p u t : D 1 D 2 . . . D n T

P ® T

D n + 1 . . . D m

T o n e

P u l s e

· S A d i a l i n g

K e y b o a r d i n p u t : S A

D i a l i n g o u t p u t :
M a : D 1 D 2 . . . D n
R M : D 1 D 2 . . . D n

- O n e - t o u c h m e m o r y s t o r e w i t h o u t d i a l i n g o u t p u t

S A M : U n c h a n g e d

D i a l i n g o u t p u t : D 1 D 2 . . . D n
M a : D 1 D 2 . . . D n
R M : D 1 D 2 . . . D n

- O n e - t o u c h m e m o r y s t o r e w i t h d i a l i n g o u t p u t

S A M : U n c h a n g e d

K e y b o a r d i n p u t : D 1 D 2 . . . D n S T S T M a

D i a l i n g o u t p u t :
M a : D 1 D 2 . . . D n ( a = b + 1 0 , M 1 0 = M 0 )
R M : D 1 D 2 . . . D n

T h r e e - t o u c h m e m o r y s t o r e w i t h o u t d i a l i n g o u t p u t

( M 1 1 ~ M 2 0 )

S A M : U n c h a n g e d

D i a l i n g o u t p u t :
M b : D 1 D 2 . . . D n

R M : D 1 D 2 . . . D n
S A M : U n c h a n g e d

D i a l i n g o u t p u t : D 1 D 2 . . . D n
M b : D 1 D 2 . . . D n

R M : D 1 D 2 . . . D n
S A M : U n c h a n g e d

· M e m o r y s t o r e

K e y b o a r d i n p u t : S T D 1 D 2 . . . D n S T M a

D i a l i n g o u t p u t : D 1 D 2 . . . D n
M a : D 1 D 2 . . . D n ( a = b + 1 0 , M 1 0 = M 0 )
R M : D 1 D 2 . . . D n

- T h r e e - t o u c h m e m o r y s t o r e w i t h d i a l i n g o u t p u t

( M 1 1 ~ M 2 0 )

S A M : U n c h a n g e d

- T w o - t o u c h m e m o r y s t o r e w i t h d i a l i n g o u t p u t

( M 1 ~ M 1 0 )

N o t e : I f t h e d i a l i n g n u m b e r e x c e e d s 3 2 d i g i t s , t h e m e m o r y s t o r e i s i n h i b i t e d .

H o w e v e r , i f t h e d i a l i n g n u m b e r i s n o t m o r e t h a n 3 2 d i g i t s t h e m e m o r y w i l l s t o r e a m a x . o f 1 6 d i g i t s .

M a = M 1 ~ M 2 0 , M b = M 1 ~ M 1 0 , a = 1 ~ 2 0 , b = 1 ~ 9 , 0

M a : D 1 D 2 . . . D n ( a = b + 1 0 , M 1 0 = M 0 )

K e y b o a r d i n p u t : S T D 1 D 2 . . . D n S T

[ b o r M b ]

K e y b o a r d i n p u t : S T D 1 D 2 . . . D n S T

P A G E [ b o r M b ]

( M 1 1 ~ M 2 0 )

- T w o - t o u c h m e m o r y s t o r e w i t h o u t d i a l i n g o u t p u t

( M 1 ~ M 1 0 )

M a : D 1 D 2 . . . D n ( a = b + 1 0 , M 1 0 = M 0 )

[ b o r M b ]

P A G E [ b o r M b ]

( M 1 1 ~ M 2 0 )

K e y b o a r d i n p u t : S T D 1 D 2 . . . D n S T

P A G E [ b o r M b ]

K e y b o a r d i n p u t : D 1 D 2 . . . D n S T S T

HT9320

July 21, 1999

R M : D 1 D 2 . . . D n
S A M : U n c h a n g e d

F l a s h a s a d i g i t a l k e y

K e y b o a r d i n p u t : D 1 D 2 . . . D n F D n + 1 . . .
D m

D i a l i n g o u t p u t : D 1 D 2 D 3 D 1 D 2 . . . D n D n + 1 . . . D m
M 1 / M 2 : U n c h a n g e d
R M : D 1 D 2 D 3 D 1 D 2 . . . D n D n + 1 . . . D m

M 2 c o n t e n t : D n + 1 . . . D m

M 1 c o n t e n t : D 1 D 2 . . . D n

S A M : U n c h a n g e d

K e y b o a r d i n p u t : D 1 D 2 D 3 [ M 1 o r A 1 ] [ M 2 o r A 2 ]

D i a l i n g o u t p u t : D 1 D 2 . . . D n
M a : U n c h a n g e d
R M : D 1 D 2 . . . D n

- O n e - t o u c h m e m o r y d i a l i n g ( M 1 ~ M 2 0 )

S A M : U n c h a n g e d

M a c o n t e n t : D 1 D 2 . . . D n
K e y b o a r d i n p u t : M a

D i a l i n g o u t p u t : D 1 D 2 . . . D n
M b : U n c h a n g e d
R M : D 1 D 2 . . . D n

- T w o - t o u c h m e m o r y d i a l i n g ( M 1 ~ M 1 0 )

S A M : U n c h a n g e d

M b c o n t e n t : D 1 D 2 . . . D n
K e y b o a r d i n p u t : A [ b o r M b ]

D i a l i n g o u t p u t : D 1 D 2 . . . D n
M a : U n c h a n g e d ( a = b + 1 0 , M 1 0 = M 0 )
R M : D 1 D 2 . . . D n

- T h r e e - t o u c h m e m o r y d i a l i n g ( M 1 1 ~ M 2 0 )

S A M : U n c h a n g e d

M 1 1 c o n t e n t : D 1 D 2 . . . D n
K e y b o a r d i n p u t : A P A G E [ M b o r b ]

- F l a s h a s a c o n t r o l k e y

( a ) T h e i n t e r v e n i e n t k e y

R M : U n c h a n g e d
S A M : U n c h a n g e d

D i a l i n g o u t p u t : T

F P

D 1 D 2 D n

K e y b o a r d i n p u t : F D 1 D 2 . . . D n

( b ) T h e f i r s t k e y

· F l a s h

· C h a i n d i a l i n g

· M e m o r y d i a l i n g

D i a l i n g o u t p u t : D 1 D 2 . . . D n T

F P

D n + 1 . . .

D m

R M : D n + 1 . . . D m
S A M : U n c h a n g e d

K e y b o a r d i n p u t : D 1 D 2 . . . D n F D n + 1 . . .
D m
D i a l i n g o u t p u t : D 1 D 2 . . . D n T

F P

D n + 1 . . .

D m

N o t e : T

: b r e a k a f l a s h t i m e

N o t e : a = 1 ~ 2 0 , M a = M 1 ~ M 2 0

M b = M 1 ~ M 1 0 , b = 1 ~ 9 , 0

N o t e : I f t h e d i a l i n g n u m b e r e x c e e d s 3 2 d i g i t s , r e d i a l i n g i s i n h i b i t e d a n d P O = V D D

HT9320

July 21, 1999

D 1 ~ D 1 2 = 0 ~ 9

D m D m + 1 D m + 2 = 0 ~ 9

D l . . . D n = 0 ~ 9 , * , #

N o t e :

R M : R e d i a l m e m o r y

S A M : S a v e d i a l i n g m e m o r y
D 1 D 2 . . . D n : 0 ~ 9
D n + 1 . . . D m : 0 ~ 9 , * , #
D m + 1 . . . D I : 0 ~ 9 , * , #
D I + 1 . . . D K : 0 ~ 9 , * , #

· N o t e :

P e r s o n a l / L o c k N o . 1 / L o c k N o . 2 i n p u t o p e r a t i o n

S t o r e s P e r s o n a l C o d e : S T D 1 D 2 D 3 S T * 0
S t o r e s L o c k N o . 1 : S T D 4 D 5 D 6 S T * 1
S t o r e s L o c k N o . 2 : S T D 7 D 8 D 9 S T * 2

C h a n g e s P e r s o n a l C o d e : S T D 1 D 2 D 3 S T # S T D 4 D 5 D 6 S T * 0

( O l d p e r s o n a l c o d e )

( N e w p e r s o n a l c o d e )

C h a n g e s L o c k N o . 1 : S T D 1 D 2 D 3 S T # S T D 4 D 5 D 6 S T * 1

( P e r s o n a l c o d e )

( L o c k N o . 1 )

C h a n g e s L o c k N o . 2 : S T D 1 D 2 D 3 S T # S T D 7 D 8 D 9 S T * 2

( L o c k N o . 2 )

C h a n g e s P e r s o n a l C o d e , L o c k N o . 1 a n d L o c k N o . 2 a t o n e t i m e

( P e r s o n a l c o d e )

S T D 1 D 2 D 3 S T # S T D 4 D 5 D 6 S T * 0 ( c o n t i n u e d )
( O l d p e r s o n a l c o d e )

( N e w p e r s o n a l c o d e )

( L o c k N o . 1 )

( L o c k N o . 2 )

- P e r s o n a l / L o c k N o . 1 / L o c k N o . 2 c a n c e l o p e r a t i o n

S T D 7 D 8 D 9 S T * 1 S T D 1 0 D 1 1 D 1 2 S T * 2

C a n c e l s P e r s o n a l c o d e : S T D 1 D 2 D 3 S T # S T # 0
C a n c e l s L o c k N o . 1 : S T D 1 D 2 D 3 S T # S T # 1
C a n c e l s L o c k N o . 2 : S T D 1 D 2 D 3 S T # S T # 2

- T e m p o r a r y r e l e a s e b o t h o f t h e l o c k n u m b e r s ( L o c k N o . 1 , L o c k N o . 2 ) :

S T D 1 D 2 D 3 S T # D m D m + 1 D m + 2 D l . . . D n

( P e r s o n a l c o d e )

( a ) P e r s o n a l c o d e d o e s n ' t e x i s t

( b ) P e r s o n a l c o d e e x i s t

· I D D l o c k o p e r a t i o n b y t h e k e y b o a r d ( 2 l o c k n u m b e r s , 3 d i g i t s / n u m b e r a t m a x i m u m )
( A 3 3 0 k W r e s i s t o r i s c o n n e c t e d b e t w e e n C 5 a n d R 1 )

Application Circuits

Application circuit 1

HT9320

July 21, 1999

HDI

HK
S

27

26

25

24

23

22

VS
S
M

VD
D

10p
ps

20pp

n
e

r
e
s
onat
or

VD
D

HF
I

150
W

1
V

l
d

4148

x

4

1
m
F

16V

4148

andf
r
e
e

m
F

50V

22M
W

n
g

b
r
i
d
g
e

PA
G

T
38

10pF

1
m
F

DT
M

HF
O

*

R

k

i
s

f
o
r

t
he
di

i
n
g

s
i
gnal

opt
i
o
n

(

e
f
e
r
to

e
fu

n
c
ti
o
n
a
l
d

e
s
c
r
i
p
ti
o
n
)

*

U

n
s
p
ec

i
f
i
ed
t
r
ans
i
s
t
o
r
s

a
r
e

o
f

8050

t
ype

*
A

m
F

c
apac

i
t
or

b
et

e
en
X

T
E

a
nd
V

(
G

)

i
s

r
e
c
o
m

ended

*

T
h
e

T
381X

(
H

T
3810

s
e
r
i
es

)

pr

i
des

a

m

ody
dur
i
n
g

t
h
e

hol
d

per
i
o
d

HS
T

4148

33/
6
6

40/
6
0

n
-
hook

o
r
e

f
f
-
hoo
k

o
r
e

M6
/

M7
/

M8
/

M9
/

10/

M1
6

M1
7

M1
8

M1
9

M2
0

M1
/

M2
/

M3
/

M4
/

M5
/

M1
1

M1
2

M1
3

M1
4

M1
5

XM
U

T
E

SP
EE
C

NE
T
W

VD
D

39pF

1
m
F

47k
W

100k

270k

220k

1
m
F

100
m
F

22k
W

100k

220k

1
m
F

330k

220k

33k
W

10k
W

47k
W

100k

m
F

100k

f
f
-
hoo
k

n
-
hook

T
9320A

28
D

I
P

Application circuit 2

HT9320

July 21, 1999

XM
U

T
E

HDI

HK
S

27

26

25

24

23

22

VS
S
M

L
O

VD
D

10p
ps

20pp

n
e

r
e
s
onat
or

VD
D

HF
I

HDO

150
W

1
V

l
d

4148

x

4

1
m
F

16V

4148

andf
r
e
e

m
F

50V

22M
W

n
g

b
r
i
d
g
e

PA
G

T
38

10pF

HT
1
6
X

L
CD
DRI
V

(
s
ee
H

T
16X
X

dat
a)

4148

DT
M

HF
O

DO
UT

*

R

k

i
s

f
o
r

t
he
di

i
n
g

s
i
gnal

opt
i
o
n

(

e
f
e
r
to

e
fu

n
c
ti
o
n
a
l
d

e
s
c
r
i
p
ti
o
n
)

*

U

n
s
p
ec

i
f
i
ed
t
r
ans
i
s
t
o
r
s

a
r
e

o
f

8050

t
ype

*
A

m
F

c
apac

i
t
or

b
et

e
en
X

T
E

a
nd
V

(
G

)

i
s

r
e
c
o
m

ended

*

T
h
e

T
381X

(
H

T
3810

s
e
r
i
es

)

pr

i
des

a

m

ody
dur
i
n
g

t
h
e

hol
d

per
i
o
d

M6
/

M7
/

M8
/

M9
/

10/

M1
6

M1
7

M1
8

M1
9

M2
0

M1
/

M2
/

M3
/

M4
/

M5
/

M1
1

M1
2

M1
3

M1
4

M1
5

SP
EE
C

NE
T
W

VD
D

1
m
F

39pF

1
m
F

47k
W

100k

270k

220k

1
m
F

100
m
F

22k
W

1
m
F

100k

220k

1
m
F

10k
W

220k

W 330k

33k
W

100k

47k
W

m
F

100k

f
f
-
hoo
k

n
-
hook

T
9320B

/
L

28
D

I
P

Application circuit 3

HT9320

July 21, 1999

XM
U

T
E

HK
S

21

20

19

18

17

16

VS
S
M

VD
D

10p
ps

20pp

n
e

r
e
s
onat
or

VD
D

150
W

1
V

4148

22M
W

n
g

b
r
i
d
g
e

PA
G

10pF

DT
M

*

R

k

i
s

f
o
r

t
he
di

i
n
g

s
i
gnal

opt
i
o
n

(

e
f
e
r
to

e
fu

n
c
ti
o
n
a
l
d

e
s
c
r
i
p
ti
o
n
)

*

U

n
s
p
ec

i
f
i
ed
t
r
ans
i
s
t
o
r
s

a
r
e

o
f

8050

t
ype

*
A

m
F

c
apac

i
t
or

b
et

e
en
X

T
E

a
nd
V

(
G

)

i
s

r
e
c
o
m

ended

M6
/

M7
/

M8
/

M9
/

10/

M1
6

M1
7

M1
8

M1
9

M2
0

M1
/

M2
/

M3
/

M4
/

M5
/

M1
1

M1
2

M1
3

M1
4

M1
5

SP
EE
C

NE
T
W

VD
D

4148

1
m
F

39pF

1
m
F

100k

220k

270k

1
m
F

100k

1
m
F

100
m
F

100k

47k
W

f
f
-
hoo
k

n
-
hook

T
9320C

22
S

I
P

Application circuit 4

HT9320

July 21, 1999

XM
U

T
E

HDI

HK
S

27

26

25

24

23

22

VS
S
M

VD
D

10p
ps

20pp

n
e

r
e
s
onat
or

VD
D

HF
I

150
W

1
V

l
d

4148

x

4

1
m
F

16V

4148

andf
r
e
e

m
F

50V

22M
W

n
g

b
r
i
d
g
e

PA
G

T
38

10pF

ook

o
f
f

ook

o
n

DT
M

HF
O

HS
T

*

R

k

i
s

f
o
r

t
he
di

i
n
g

s
i
gnal

opt
i
o
n

(

e
f
e
r
to

e
fu

n
c
ti
o
n
a
l
d

e
s
c
r
i
p
ti
o
n
)

*

U

n
s
p
ec

i
f
i
ed
t
r
ans
i
s
t
o
r
s

a
r
e

o
f

8050

t
ype

*
A

m
F

c
apac

i
t
or

b
et

e
en
X

T
E

a
nd
V

(
G

)

i
s

r
e
c
o
m

ended

*

T
h
e

T
381X

(
H

T
3810

s
e
r
i
es

)

pr

i
des

a

m

ody
dur
i
n
g

t
h
e

hol
d

per
i
o
d

4148

40/
60

33/
66

n
-
hook

o
r
e

f
f
-
hoo
k

o
r
e

SP
EE
C

NE
T
W

VD
D

M6
/

M7
/

M8
/

M9
/

10/

M1
6

M1
7

M1
8

M1
9

M2
0

M1
/

M2
/

M3
/

M4
/

M5
/

M1
1

M1
2

M1
3

M1
4

M1
5

1
m
F

39pF

1
m
F

47k
W

100k

270k

220k

1
m
F

100
m
F

22k
W

1
m
F

10k
W

1
m
F

100k

220k

W 330k

220k

100k

33k
W

47k
W

100k

m
F

T
9320H

28
D

I
P

Application circuit 5

HT9320

July 21, 1999

XM
U

T
E

HDI

HK
S

27

26

25

24

23

22

VS
S
M

VD
D

10p
ps

20pp

n
e

r
e
s
onat
or

VD
D

HF
I

HDO

150
W

1
V

l
d

4148

x

4

1
m
F

16V

4148

andf
r
e
e

m
F

50V

22M
W

n
g

b
r
i
d
g
e

PA
G

T
38

10pF

DT
M

HF
O

*

R

k

i
s

f
o
r

t
he
di

i
n
g

s
i
gnal

opt
i
o
n

(

e
f
e
r
to

e
fu

n
c
ti
o
n
a
l
d

e
s
c
r
i
p
ti
o
n
)

*

U

n
s
p
ec

i
f
i
ed
t
r
ans
i
s
t
o
r
s

a
r
e

o
f

8050

t
ype

*
A

m
F

c
apac

i
t
or

b
et

e
en
X

T
E

a
nd
V

(
G

)

i
s

r
e
c
o
m

ended

*

T
h
e

T
381X

(
H

T
3810

s
e
r
i
es

)

pr

i
des

a

m

ody
dur
i
n
g

t
h
e

hol
d

per
i
o
d

u
zze
r

SP
EE
C

NE
T
W

VD
D

M6
/

M7
/

M8
/

M9
/

10/

M1
6

M1
7

M1
8

M1
9

M2
0

M1
/

M2
/

M3
/

M4
/

M5
/

M1
1

M1
2

M1
3

M1
4

M1
5

1
m
F

39pF

1
m
F

100
m
F

47k
W

100k

270k

220k

22k
W

1
m
F

100k

220k

1m
F

330k

10k
W

220k

100k

47k
W

33k
W

m
F

100k

f
f
-
hoo
k

n
-
hook

T
9320K

28
D

I
P

HT9320

July 21, 1999

Copyright ã 1999 by HOLTEK SEMICONDUCTOR INC.
The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek

assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are

used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications

will be suitable without further modification, nor recommends the use of its products for application that may pres-

ent a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior

notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw.

Holtek Semiconductor Inc. (Headquarters)

No.3 Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan, R.O.C.

Tel: 886-3-563-1999

Fax: 886-3-563-1189
Holtek Semiconductor Inc. (Taipei Office)

5F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan, R.O.C.

Tel: 886-2-2782-9635

Fax: 886-2-2782-9636

Fax: 886-2-2782-7128 (International sales hotline)
Holtek Microelectronics Enterprises Ltd.

RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong

Tel: 852-2-745-8288

Fax: 852-2-742-8657

Part Number HT9320

Document Outline