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| HCS412 Datasheet, PDF (5/44 Pages) Microchip Technology – KEELOQ Code Hopping Encoder and Transponder | |||
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FIGURE 2-4: DATA PIN DIAGRAM
DATA
IN
<
OE >
DOAUTTA>
120 kâ¦
DATA
HCS412
FIGURE 2-5: LED PIN DIAGRAM
LED
R
LED_ON >
FIGURE 2-6: TYPICAL APPLICATION CIRCUITS
Battery-less Short Range Transponder
S0 1
S1 2
LC1 3
LC0 4
8 VDD
7 LED
6 DATA
5 GND
Long Range / Proximity Activated Transponder / Encoder
S0 1
8 VDD
S1 2
7 LED
LC1 3
6 DATA
RF
LC0 4
5 GND
Short Range Transponder with RFEN Control / Long Range Encoder
S0 1
8 VDD
S1 2
7 LED
RF
RFEN 3
6 DATA
LC0 4
5 GND
© 2002 Microchip Technology Inc.
Preliminary
DS41099C-page 5
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