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PT2241 V1.5

- 11 -

March, 2006

Programmable Encoder IC

PT2241

APPLICATION CIRCUIT

8 PIN-1 DATA

VSS

VPG

PG M *2

VDD

DO U T

OS C

N0 /CO DE D0 /CLK

PT 2 24 1

+

-

RF

12 V

*1

16 PIN-4 DATA

VSS

S1

VPG

S0

N1

VDD

DOUT

N2

N0/CODE

D2

N3

OSC

D1

D3

D0/CLK

PT2241-16

PGM*2

RF

+

-

12V

*1

Notes:

1. 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, the IC will

fail.

2. In order to avoid unexpected programming, we suggest PGM pin connects with ground (VSS) to

avoid PGM pin changed to “High level” and cause into “Programming mode”