Datasheet

 2000-2013 Microchip Technology Inc. DS30569C-page 41

PIC16F870/871

TABLE 4-9: PORTE FUNCTIONS

TABLE 4-10: SUMMARY OF REGISTERS ASSOCIATED WITH PORTE

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:

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:

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:

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.

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

— — — — —RE2RE1RE0---- -xxx ---- -uuu

89h TRISE IBF OBF IBOV PSPMODE

— PORTE Data Direction Bits 0000 -111 0000 -111

9Fh ADCON1 ADFM

— — — PCFG3 PCFG2 PCFG1 PCFG0 --0- 0000 --0- 0000

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