PIC16C925-SSLASHCL datasheet(96/182 Pages) MICROCHIP

96 / 182 page

PIC16C925/926

DS39544A-page 94

Preliminary

 2001 Microchip Technology Inc.

11.4.1

SEGMENT ENABLES

The LCDSE register is used to select the pin function

for groups of pins. The selection allows each group of

pins to operate as either LCD drivers or digital only

pins. To configure the pins as a digital port, the corre-

sponding bits in the LCDSE register must be cleared.

If the pin is a digital I/O the corresponding TRIS bit con-

trols the data direction. Any bit set in the LCDSE regis-

ter overrides any bit settings in the corresponding TRIS

EXAMPLE 11-1:

STATIC MUX WITH 32

SEGMENTS

EXAMPLE 11-2:

ONE-THIRD DUTY CYCLE

WITH 13 SEGMENTS

LCDSE REGISTER (ADDRESS 10Dh)

Note 1: On a Power-on Reset, these pins are

configured as LCD drivers.

2: The LMUX1:LMUX0 takes precedence

over the LCDSE bit settings for pins RD7,

RD6 and RD5.

BCF

STATUS,RP0

;Select Bank 2

BSF

STATUS,RP1

;

BCF

LCDCON,LMUX1 ;Select Static MUX

BCF

LCDCON,LMUX0 ;

MOVLW 0xFF

;Make PortD,E,F,G

MOVWF LCDSE

;LCD pins

. . .

;configure rest of LCD

BCF

STATUS,RP0

;Select Bank 2

BSF

STATUS,RP1

;

BSF

LCDCON,LMUX1 ;Select 1/3 MUX

BCF

LCDCON,LMUX0 ;

MOVLW 0x87

;Make PORTD<7:0> &

MOVWF LCDSE

;PORTE<6:0> LCD pins

. . .

;configure rest of LCD

R/W-1

SE29

SE27

SE20

SE16

SE12

SE9

SE5

SE0

bit 7

bit 0

bit 7

SE29: Pin Function Select

RD7/COM1/SEG31 - RD5/COM3/SEG29