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HT82K96E

8-Bit USB Multimedia Keyboard Encoder OTP MCU

Rev. 1.70

April 22, 2004

General Description

This device is an 8-bit high performance RISC-like
microcontroller designed for USB product applications.
It is particularly suitable for use in products such as

mice, keyboards and joystick. A HALT feature is in-
cluded to reduce power consumption.

Features

Operating voltage:
f

SYS

=6M/12MHz: 4.4V~5.5V

Low voltage reset function

32 bidirectional I/O lines (max.)

8-bit programmable timer/event counter with over-
flow interrupt

16-bit programmable timer/event counter and over-
flow interrupts

Crystal oscillator (6MHz or 12MHz)

Watchdog Timer

6 channels 8-bit A/D converter

PS2 and USB modes supported

USB1.1 low speed function

4 endpoints supported (endpoint 0 included)

4096

´15 program memory ROM

160

´8 data memory RAM

HALT function and wake-up feature reduce power
consumption

8-level subroutine nesting

Up to 0.33

ms instruction cycle with 12MHz system

clock at V

=5V

Bit manipulation instruction

15-bit table read instruction

63 powerful instructions

All instructions in one or two machine cycles

20-pin SOP, 48-pin SSOP package

Block Diagram

HT82K96E

Rev. 1.70

April 22, 2004

O S C 2

O S C 1

R E S

V D D

M U X

T M R 0 C

T M R 0

V S S

P r o g r a m

R O M

P r o g r a m

C o u n t e r

I n t e r r u p t

C i r c u i t

S T A C K

I N T C

D A T A

M e m o r y

I n s t r u c t i o n

R e g i s t e r

I n s t r u c t i o n

D e c o d e r

S T A T U S

A L U

S h i f t e r

T i m i n g

G e n e r a t o r

A C C

M P

S Y S C L K / 4

W D T S

W D T

W D T O S C

W D T P r e s c a l e r

E N / D I S

P D C

P O R T D

P D 0 ~ P D 7

P B C

P O R T B

P B 0 / A N 0 ~ P B 5 / A N 5

P B 6 / V R L

P B 7 / V R H

P B

P A C

P O R T A

P A 0 ~ P A 5

P A 6 / T M R 0

P A 7 / T M R 1

P A

P D

P C

P O R T C

P C 0 ~ P C 7

P C C

T M R 1 C

T M R 1

P A 7 / T M R 1

S Y S

/ 4

S Y S

/ 4

P A 6 / T M R 0

A / D C o n v e r t e r

U S B 1 . 1

P S 2

B P

U S B D + / C L K U S B D - / D A T A

V 3 3 O

P A 6

P A 7

Pin Assignment

Pin Description

Pin Name

I/O

ROM Code

Option

Description

PA0~PA5
PA6/TMR0
PA7/TMR1

I/O

Pull-low

Pull-high

Wake-up

CMOS/NMOS/PMOS

Bidirectional 8-bit input/output port. Each bit can be configured as a
wake-up input by ROM code option. The input or output mode is con-
trolled by PAC (PA control register).
Pull-high resistor options: PA0~PA7
Pull-low resistor options: PA0~PA5
CMOS/NMOS/PMOS options: PA0~PA7
Wake up options: PA0~PA7
PA6 and PA7 are pin-shared with TMR0 and TMR1 input, respectively.
PA0~PA5 can be used as USB mouse X1, X2, Y1, Y2, Z1, Z2 input for
mouse hardware wake-up function
PA6, PA7 can be used as USB mouse button input for mouse hardware
wake-up function

PB0/AN0
PB1/AN1
PB2/AN2
PB3/AN3
PB4/AN4
PB5/AN5
PB6/VRL
PB7/VRH

I/O

Pull-high

Analog input

Bidirectional 8-bit input/output port. Software instructions determine the
CMOS output or Schmitt trigger input with pull-high resistor (determined
by pull-high options).
The PB can be used as analog input of the analog to digital converter
(determined by options).
PB6, PB7 can be used as USB mouse button input for mouse Hardware
wake-up function

PD0~PD7

I/O

Pull-high

Bidirectional I/O lines. Software instructions determine the CMOS out-
put or Schmitt trigger input with pull-high resistor (determined by 1-bit
pull-high option).
PD4 can be used as USB mouse button input for mouse hardware
wake-up function

HT82K96E

Rev. 1.70

April 22, 2004

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

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

H T 8 2 K 9 6 E

4 8 S S O P - A

P C 6
P C 7
P A 4
P A 5
P A 6 / T M R 0
P A 7 / T M R 1
N C
N C
N C
N C
P D 3
P D 2
P D 1
P D 0
O S C 1
O S C 2
R E S
V S S
P B 7 / V R H
P B 6 / V R L
P B 5 / A N 5
P B 4 / A N 4
P B 3 / A N 3
P B 2 / A N 2

P C 5
P C 4

P A 3
P A 2
P A 1
P A 0

P C 0
P C 1
P C 2
P C 3

N C
N C
N C
N C

P D 4
P D 5
P D 6
P D 7

V D D

V 3 3 O

U S B D + / C L K

U S B D - / D A T A

P B 0 / A N 0
P B 1 / A N 1

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

1
2
3
4
5
6
7
8
9
1 0

H T 8 2 K 9 6 E

2 0 S O P - A

P A 3
P A 2
P A 1
P A 0

P C 0
P D 4

V D D

V 3 3 O

U S B D + / C L K

U S B D - / D A T A

P A 4
P A 5
P A 6 / T M R 0
P A 7 / T M R 1
O S C 1
O S C 2
R E S
V S S
P B 7 / V R H
P B 6 / V R L

Pin Name

I/O

ROM Code

Option

Description

VSS

Negative power supply, ground

PC0~PC7

I/O

Pull-high

Bidirectional I/O lines. Software instructions determine the CMOS out-
put or Schmitt trigger input with pull-high resistor (determined by
pull-high options).
PC0 can be used as USB mouse IRPT control pin for mouse hardware
wake-up function

RES

Schmitt trigger reset input. Active low

VDD

Positive power supply

V33O

3.3V regulator output

USBD+/CLK

I/O

USBD+ or PS2 CLK I/O line
USB OR PS2 function is controlled by software control register

USBD-/DATA

I/O

USBD- or PS2 DATA I/O line
USB or PS2 function is controlled by software control register

OSC1
OSC2

OSC1, OSC2 are connected to an 6MHz or 12MHz Crystal/resonator
(determined by software instructions) for the internal system clock.

Absolute Maximum Ratings

Supply Voltage ...........................V

-0.3V to V

+6.0V

Storage Temperature ............................

-50°C to 125°C

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

-0.3V to V

+0.3V

Operating Temperature...............................0

°C to 70°C

Note: These are stress ratings only. Stresses exceeding the range specified under

²Absolute Maximum 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 exposure to extreme conditions may affect device reliabil-
ity.

D.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

Operating Voltage

SYS

=6MHz

4.4

5.5

SYS

=12MHz

4.4

5.5

DD1

Operating Current (6MHz Crystal)

No load, f

SYS

=6MHz

6.5

DD2

Operating Current (12MHz Crystal)

No load, f

SYS

=12MHz

7.5

STB1

Standby Current (WDT Enabled)

No load, system HALT,
USB suspend

250

STB2

Standby Current (WDT Disabled)

No load, system HALT,
USB suspend

230

IL1

Input Low Voltage for I/O Ports

0.8

IH1

Input High Voltage for I/O Ports

IL2

Input Low Voltage (RES)

¾ 0.4V

IH2

Input High Voltage (RES)

0.9V

OL1

I/O Port Sink Current for PB, PC1~PC7, PD

=3.4V

OL2

I/O Port Sink Current for PB, PC1~PC7, PD

=0.4V

OL3

I/O Port Sink Current for PA

=0.4V

HT82K96E

Rev. 1.70

April 22, 2004

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

OL4

I/O Port Sink Current for PC0

=0.4V

OH1

I/O Port Source Current for PC0

=3.4V

-8

-16

OH2

I/O Port Source Current for PA, PB,
PC1~PC7, PD

=3.4V

-2

-5

Pull-high Resistance for PA, PB, PC, PD

Pull-low Resistance for PA1~PA5

LVR

Low Voltage Reset

3.4

4.0

V33O

3.3V Regulator Output

V33O

-5mA

3.0

3.3

3.6

A/D

A/D Conversion Error

Total error

LSB

A.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ. Max.

Unit

Conditions

SYS

System Clock (Crystal OSC)

MHz

TIMER

Timer I/P Frequency (TMR0/TMR1)

MHz

WDTOSC

Watchdog Oscillator

WDT1

Watchdog Time-out Period (WDT OSC)

Without WDT prescaler

WDT2

Watchdog Time-out Period (System Clock)

¾ Without WDT prescaler

1024

SYS

RES

External Reset Low Pulse Width

SST

System Start-up Timer Period

Wake-up from HALT

1024

SYS

Power-up, Watchdog
Time-out from normal

1024

WDTOSC

INT

Interrupt Pulse Width

ADC

A/D Conversion Time

A/D

Note: t

A/D

A /D

, f

A/D

=A/D clock source frequencies (6MHz, 3MHz, 1.5MHz, 0.75MHz)

HT82K96E

Rev. 1.70

April 22, 2004

Part Number HT82K96E

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