PIC16F870SLASHP datasheet(9/156 Pages) MICROCHIP

9 / 156 page

Preliminary

DS30569A-page 9

PIC16F870/871

PORTD is a bi-directional I/O port or parallel slave port when

interfacing to a microprocessor bus.

RD0/PSP0

I/O

ST/TTL(3)

RD1/PSP1

I/O

ST/TTL(3)

RD2/PSP2

I/O

ST/TTL(3)

RD3/PSP3

I/O

ST/TTL(3)

RD4/PSP4

I/O

ST/TTL(3)

RD5/PSP5

I/O

ST/TTL(3)

RD6/PSP6

I/O

ST/TTL(3)

RD7/PSP7

I/O

ST/TTL(3)

PORTE is a bi-directional I/O port.

RE0/RD/AN5

I/O

ST/TTL(3)

RE0 can also be read control for the parallel slave port, or

analog input5.

RE1/WR/AN6

I/O

ST/TTL(3)

RE1 can also be write control for the parallel slave port, or

analog input6.

RE2/CS/AN7

I/O

ST/TTL(3)

RE2 can also be select control for the parallel slave port,

or analog input7.

VSS

12,31

13,34

6,29

—

Ground reference for logic and I/O pins.

VDD

11,32

12,35

7,28

—

Positive supply for logic and I/O pins.

—

1,17,28,

12,13,

33,34

—

These pins are not internally connected. These pins should be

left unconnected.

TABLE 1-2:

PIC16F871 PINOUT DESCRIPTION (CONTINUED)

Pin Name

DIP

Pin#

PLCC

Pin#

QFP

Pin#

I/O/P

Type

Buffer

Type

Description

Legend:

I = input

O = output

I/O = input/output

P = power

— = Not used

TTL = TTL input

ST = Schmitt Trigger input

Note 1:

This buffer is a Schmitt Trigger input when configured as an external interrupt or LVP mode.

This buffer is a Schmitt Trigger input when used in serial programming mode.

This buffer is a Schmitt Trigger input when configured as general purpose I/O and a TTL input when used in the Parallel Slave

Port mode (for interfacing to a microprocessor bus).

This buffer is a Schmitt Trigger input when configured in RC oscillator mode and a CMOS input otherwise.

PIC16F870/P Datasheet(PDF) 9 Page - Microchip Technology

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