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Programmable Encoder IC

PT2240

PT2240 v 1.4

Page 2

Revised Nov.1999

Pin Configurations

1

2

3

4

1

2

3

4

8

7

6

5

8

7

6

5

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

VSS

S1

VPG

D7

D6

D5

D4

PGM

S0

VDD

DOUT

OSC

D0/CLK

D1/CODE

D2

D3

PT2240 (16 PINS)

VSS

VPG

PGM

D1/CODE

VSS

PGM

D1/CODE

D2

VDD

DOUT

OSC

D0/CLK

VDD

DOUT

OSC

D0/CLK

PT2240 (8 PINS)

PT2240-D3 (8 PINS)

Application Circuits

RF

Rosc

12V

Vss

S1

VPG

D7

D6

D5

D4

PGM

S0

VDD

DOUT

OSC

D0/CLK

D1/CODE

D2

D3

+

_

Figure 1: 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.