PIC16F870-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F870-I/SO

28/40-Pin, 8-Bit CMOS FLASH Microcontrollers

Microchip Technology 

PIC16F870/871

TABLE 3-9: PORTE FUNCTIONS

Name

Bit# Buffer Type

Function

RE0/RD/AN5

bit0

ST/TTL(1) Input/output port pin or read control input in parallel slave port mode or

analog input:

RD

1 = Not a read operation

0 = Read operation. Reads PORTD register (if chip selected)

RE1/WR/AN6

bit1

ST/TTL(1) Input/output port pin or write control input in parallel slave port mode or

analog input:

WR

1 = Not a write operation

0 = Write operation. Writes PORTD register (if chip selected)

RE2/CS/AN7

bit2

ST/TTL(1) Input/output port pin or chip select control input in parallel slave port

mode or analog input:

CS

1 = Device is not selected

0 = Device is selected

Legend: ST = Schmitt Trigger input TTL = TTL input

Note 1: Input buffers are Schmitt Triggers when in I/O mode and TTL buffers when in Parallel Slave Port Mode.

TABLE 3-10: SUMMARY OF REGISTERS ASSOCIATED WITH PORTE

Addr Name Bit 7 Bit 6 Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Value on:

POR,

BOR

Value on all

other resets

09h PORTE

—

—

—

—

—

RE2

RE1

RE0 ---- -xxx

89h TRISE IBF OBF IBOV PSPMODE — PORTE Data Direction Bits 0000 -111

9Fh ADCON1 ADFM —

—

—

PCFG3 PCFG2 PCFG1 PCFG0 --0- 0000

Legend: x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used by PORTE.

---- -uuu

0000 -111

--0- 0000

© 1999 Microchip Technology Inc.

Preliminary

DS30569A-page 35

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