.
Tel: 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Programmable Encoder IC
PT2240
Description
PT2240 is programmable encoder utilizing CMOS Technology specially designed for remote
control applications. It has a maximum of 22 Address which may be designed by a one-time
programmable process. It can support up to 8 Data Bits and is housed in 8 or 16-pin DIP or SO
Package. It encodes address and data codes into a coded waveform suitable for RF modulation.
The pin assignments and application circuit are optimized for easy PCB Layout and cost saving
advantage. Furthermore, PT2240's intrinsic feature of being able to support 2/3/4/6/8 data bits
considerably reduces inventory pressures.
Features
·
CMOS Technology
·
Low Power Consumption
·
Least External Components
·
High Noise Immunity
·
Single Resistor Oscillator
·
Operating Voltage: 1.8~15 V
·
Up to 8 Data Pins
·
Up to 2
22
Address Codes
·
One-Time Programmable Process
·
Available in SO or DIP Package
·
Reduction of Inventory Pressures
Applications
·
Burglar Alarm System
·
Car Security System
·
Car/Garage Door Controller
·
Home/Office Security System
·
Personal Alarm System
PT2240 v 1.4
Page 1
Revised Nov.1999
.
Tel: 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Programmable Encoder IC
PT2240
Application Circuits
RF
Rosc
12V
Vss
S1
VPG
D7
D6
D5
D4
PGM
S0
VDD
DOUT
OSC
D0/CLK
D1/CODE
D2
D3
+
_
Figure 2: PT2240 (8 Data) Application Circuit
Note: In order that IC protection is assured, please make sure that a diode is connected between the battery and the
VDD. If the diode is not connected and the battery polarity was inverted, then the IC will fail.
Vss
VPG
PGM
D1/CODE
VDD
DOUT
OSC
D0/CLK
PT2240 (8 PINS)
RF
12V
Rosc
+
_
Figure 3: PT2240 (8-pin) Application Circuit
Note: In order that IC protection is assured, please make sure that a diode is connected between the battery and the
VDD. If the diode is not connected and the battery polarity was inverted, then the IC will fail.
PT2240 v 1.4
Page 3
Revised Nov.1999
.
Tel: 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Programmable Encoder IC
PT2240
Vss
PGM
D1/CODE
D2
VDD
DOUT
OSC
D0/CLK
PT2240-D3 (8 PINS)
RF
12V
Rosc
+
_
Note: In order that IC protection is assured, please make sure that a diode is connected between the battery and the
VDD. If the diode is not connected and the battery polarity was inverted, then the IC will fail.
Order Information
Valid Part Number
Package
Address Codes
PT2240-D3
8 Pins, DIP
Programmable
PT2240P-D3
8 Pins, DIP
Programmed
PT2240-D3S
8 Pins, SOP (150 mil)
Programmable
PT2240P-D3S
8 Pins, SOP (150 mil)
Programmed
PT2240
8 Pins, DIP
Programmable
PT2240-S
8 Pins, SOP (150 mil)
Programmable
PT2240P
8 Pins, DIP
Programmed
PT2240P-S
8 Pins, SOP (150 mil)
Programmed
PT2240-16
16 Pins, DIP
Programmable
PT2240-16S
16 Pins, SOP (150 mil)
Programmable
PT2240P-16
16 Pins, DIP
Programmed
PT2240P-16S
16 Pins, SOP (150 mil)
Programmed
PT2240 v 1.4
Page 4
Revised Nov.1999
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