PIC16F870SLASHP datasheet(35/156 Pages) MICROCHIP

35 / 156 page

Preliminary

DS30569A-page 35

PIC16F870/871

TABLE 3-9:

PORTE FUNCTIONS

TABLE 3-10:

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:

= Not a read operation

= 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:

= Not a write operation

= 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:

= Device is not selected

= 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

—

—RE2

RE1

RE0

---- -xxx

---- -uuu

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.

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