PIC17C752-08SLASHCL datasheet(89/328 Pages) MICROCHIP

부품명	PIC17C752-08/CL

상세설명	High-Performance 8-Bit CMOS EPROM Microcontrollers with 10-bit A/D

PDF	328 Pages

Scroll/Zoom	100%

제조업체	MICROCHIP [Microchip Technology]

홈페이지	http://www.microchip.com

Logo

89 / 328 page

DS30289A-page 89

PIC17C7XX

10.9

PORTJ and DDRJ Registers

(PIC17C76X only)

PORTJ is an 8-bit wide bi-directional port. The corre-

sponding data direction register is DDRJ. A '1' in

DDRJ conﬁgures the corresponding port pin as an

input. A '0' in the DDRJ register conﬁgures the corre-

sponding port pin as an output.

Reading PORTJ

reads the status of the pins, whereas writing to PORTJ

will write to the respective port latch.

PORTJ is a general purpose I/O port.

EXAMPLE 10-1: INITIALIZING PORTJ

MOVLB

; Select Bank 8

CLRF

PORTJ, F

; Initialize PORTJ data

; latches before setting

; the data direction

; register

MOVLW

0xCF

; Value used to initialize

; data direction

MOVWF

DDRJ

; Set RJ<3:0> as inputs

; RJ<5:4> as outputs

; RJ<7:6> as inputs

Figure 10-19:PORTJ Block Diagram

Note: I/O pins have protection diodes to VDD and Vss.

Data Bus

RD_PORTJ

WR_PORTJ

RD_DDRJ

WR_DDRJ

VDD

PIC17C752-08/CL 데이터시트(PDF) 89 Page - Microchip Technology