Rabbit Smartcat - Header Pinouts; I;O Address Assignments

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User’s Manual 83

C.4 Header Pinouts

Figure C-6 shows the pinouts for the LCD/keypad module.

Figure C-6. LCD/Keypad Module Pinouts

C.4.1 I/O Address Assignments

The LCD and keypad on the LCD/keypad module are addressed by the PE7 strobe as

explained in Table C-2.

Table C-2. LCD/Keypad Module Address Assignment

Address Function

Exx0–Exx7 LCD control

Exx8 LED enable

Exx9 Not used

ExxA 7-key keypad

ExxB (bits 0–6) 7-LED driver

ExxB (bit 7) LCD backlight on/off

ExxC–ExxF Not used

DB6B

DB4B

DB2B

DB0B

A1B

A3B

GND

LED7

LED5

LED3

LED1

/RES

VCC

DB7B

DB5B

DB3B

DB1B

A0B

A2B

GND

LED6

LED4

LED2

PE7

+5BKLT

GND