PIC16F870T-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F870T-I/SO

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

Microchip Technology 

PIC16F870/871

FIGURE 1-2:

Device

PIC16F871

PIC16F871 BLOCK DIAGRAM

Program

FLASH

2K

Data Memory

128 Bytes

Data

EEPROM

64 Bytes

FLASH

Program

Memory

13

Program Counter

8 Level Stack

(13-bit)

Data Bus

8

RAM

File

Registers

Program

Bus

14

Instruction reg

RAM Addr (1) 9

Addr MUX

Direct Addr 7

Indirect

8 Addr

FSR reg

STATUS reg

8

Instruction

Decode &

Control

OSC1/CLKIN

OSC2/CLKOUT

Timing

Generation

Power-up

Timer

Oscillator

Start-up Timer

Power-on

Reset

Watchdog

Timer

Brown-out

Reset

In-Circuit

Debugger

Low-Voltage

Programming

3

MUX

ALU

8

W reg

Timer0

MCLR VDD, VSS

Timer1

Timer2

10-bit A/D

PORTA

PORTB

PORTC

PORTD

RA0/AN0

RA1/AN1

RA2/AN2/VREF-

RA3/AN3/VREF+

RA4/T0CKI

RA5/AN4

RB0/INT

RB1

RB2

RB3/PGM

RB4

RB5

RB6/PGC

RB7/PGD

RC0/T1OSO/T1CKI

RC1/T1OSI

RC2/CCP1

RC3

RC4

RC5

RC6/TX/CK

RC7/RX/DT

RD7/PSP7:RD0/PSP0

PORTE

RE0/AN5/RD

RE1/AN6/WR

RE2/AN7/CS

Data EEPROM

CCP1

Parallel Slave Port

Note 1: Higher order bits are from the STATUS register.

USART

DS30569A-page 6

Preliminary

© 1999 Microchip Technology Inc.

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