Escola de Educao Profissional SENAI Nilo Peanha Curso Tcnico em Eletrnica

PIC16F870

Prof. Diego Volpini Fonte: Microchip

PIC16F870/871

DS30569B-page 2 2003 Microchip Technology Inc.

Pin Diagrams

PIC

16F8

70

1011

23456

1

87

9

121314 15

1617181920

232425262728

2221

MCLR/VPP/THVRA0/AN0RA1/AN1

RA2/AN2/VREF-RA3/AN3/VREF+

RA4/T0CKIRA5/AN4

VSSOSC1/CLKI

OSC2/CLKORC0/T1OSO/T1CKI

RC1/T1OSIRC2/CCP1

RC3

RB7/PGDRB6/PGCRB5RB4RB3/PGMRB2RB1RB0/INTVDDVSSRC7/RX/DTRC6/TX/CKRC5RC4

1011121314151617

18 19 20 21 22 23 24 25 26

44

87

6 5 4 3 2 1

27 28

29303132333435363738394

0414243

9

PIC16F871

RA4/T0CKIRA5/AN4

RE0/RD/AN5

OSC1/CLKIOSC2/CLKO

RC0/T1OSO/T1CK1NC

RE1/WR/AN6RE2/CS/AN7

VDDVSS

RB3/PGMRB2RB1RB0/INTVDDVSSRD7/PSP7RD6/PSP6RD5/PSP5RD4/PSP4RC7/RX/DT

RA3

/AN

3/VR

EF+

RA2

/AN

2/V R

EF-

RA1

/AN

1R

A0/A

N0

MC

LR/V

PP

/TH

VN

CR

B7/P

GD

RB6

/PG

CR

B5R

B4N

CN

CR

C6/

TX/C

KR

C5

RC

4R

D3/

PSP

3R

D2/

PSP

2R

D1/

PSP

1R

D0/

PSP

0R

C3

RC

2/C

CP1

RC

1/T1

OSI

1011

23456

1

18 19 20 21 2212 13 14 15

38

87

44 43 42 41 40 3916 17

2930313233

232425262728

36 3435

9

PIC16F871

37

RA3

/AN

3/VR

EF+

RA2

/AN

2/V R

EF-

RA1

/AN

1R

A0/A

N0

MC

LR/V

PP

/TH

V

NC

RB7

/PG

DR

B6/P

GC

RB5

RB4N

CR

C6/

TX/C

KR

C5

RC

4R

D3/

PSP3

RD

2/PS

P2R

D1/

PSP1

RD

0/PS

P0R

C3

RC

2/C

CP1

RC

1/T1

OSI

NC

NCRC0/T1OSO/T1CKIOSC2/CLKOOSC1/CLKIVSSVDDRE2/CS/AN7RE1/WR/AN6RE0/RD/AN5RA5/AN4RA4/T0CKI

RC7/RX/DTRD4/PSP4RD5/PSP5RD6/PSP6RD7/PSP7

VSSVDD

RB0/INTRB1RB2

RB3/PGM

PLCC

TQFP

DIP, SOIC, SSOP

2003 Microchip Technology Inc. DS30569B-page 5

PIC16F870/8711.0 DEVICE OVERVIEWThis document contains device specific information.Additional information may be found in the PICmicroTMMid-Range MCU Family Reference Manual(DS33023), which may be obtained from your localMicrochip Sales Representative or downloaded fromthe Microchip web site. The Reference Manual shouldbe considered a complementary document to this datasheet, and is highly recommended reading for a betterunderstanding of the device architecture and operationof the peripheral modules.

There are two devices (PIC16F870 and PIC16F871)covered by this data sheet. The PIC16F870 devicecomes in a 28-pin package and the PIC16F871 devicecomes in a 40-pin package. The 28-pin device does nothave a Parallel Slave Port implemented.The following two figures are device block diagramssorted by pin number: 28-pin for Figure 1-1 and 40-pinfor Figure 1-2. The 28-pin and 40-pin pinouts are listedin Table 1-1 and Table 1-2, respectively.

FIGURE 1-1: PIC16F870 BLOCK DIAGRAM

FLASHProgramMemory

13 Data Bus 8

14ProgramBus

Instruction reg

Program Counter

8 Level Stack(13-bit)

RAMFile

Registers

Direct Addr 7

RAM Addr (1) 9Addr MUX

IndirectAddr

FSR reg

STATUS reg

MUX

ALU

W reg

Power-upTimer

OscillatorStart-up Timer

Power-onReset

WatchdogTimer

InstructionDecode &

Control

TimingGeneration

OSC1/CLKIOSC2/CLKO

MCLR VDD, VSS

PORTA

PORTB

PORTC

RA4/T0CKIRA5/AN4

RB0/INT

RC0/T1OSO/T1CKIRC1/T1OSIRC2/CCP1RC3RC4RC5RC6/TX/CKRC7/RX/DT

8

8

Brown-outReset

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

USARTCCP1

10-bit A/DTimer0 Timer1 Timer2

RA3/AN3/VREF+RA2/AN2/VREF-RA1/AN1RA0/AN0

8

3

Data EEPROM

RB1RB2RB3/PGMRB4RB5RB6/PGCRB7/PGD

Device Program FLASH Data Memory Data EEPROMPIC16F870 2K 128 Bytes 64 Bytes

In-CircuitDebugger

Low-VoltageProgramming

2003 Microchip Technology Inc. DS30569B-page 7

PIC16F870/871 TABLE 1-1: PIC16F870 PINOUT DESCRIPTION

Pin Name DIPPin#SOICPin#

I/O/PType

BufferType Description

OSC1/CLKI 9 9 I ST/CMOS(3) Oscillator crystal input/external clock source input.OSC2/CLKO 10 10 O Oscillator crystal output. Connects to crystal or resonator in

Crystal Oscillator mode. In RC mode, the OSC2 pin outputs CLKO, which has 1/4 the frequency of OSC1, and denotes the instruction cycle rate.

MCLR/VPP/THV 1 1 I/P ST Master Clear (Reset) input or programming voltage input or High Voltage Test mode control. This pin is an active low RESET to the device. PORTA is a bi-directional I/O port.

RA0/AN0 2 2 I/O TTL RA0 can also be analog input 0.RA1/AN1 3 3 I/O TTL RA1 can also be analog input 1.RA2/AN2/VREF- 4 4 I/O TTL RA2 can also be analog input 2 or negative analog reference

voltage.RA3/AN3/VREF+ 5 5 I/O TTL RA3 can also be analog input 3 or positive analog reference

voltage.RA4/T0CKI 6 6 I/O ST/OD RA4 can also be the clock input to the Timer0 module. Output

is open drain type.RA5/AN4 7 7 I/O TTL RA5 can also be analog input 4.

PORTB is a bi-directional I/O port. PORTB can be software programmed for internal weak pull-up on all inputs.

RB0/INT 21 21 I/O TTL/ST(1) RB0 can also be the external interrupt pin.RB1 22 22 I/O TTLRB2 23 23 I/O TTLRB3/PGM 24 24 I/O TTL/ST(1) RB3 can also be the low voltage programming input.RB4 25 25 I/O TTL Interrupt-on-change pin.RB5 26 26 I/O TTL Interrupt-on-change pin.RB6/PGC 27 27 I/O TTL/ST(2) Interrupt-on-change pin or In-Circuit Debugger pin. Serial

programming clock.RB7/PGD 28 28 I/O TTL/ST(2) Interrupt-on-change pin or In-Circuit Debugger pin. Serial

programming data.PORTC is a bi-directional I/O port.

RC0/T1OSO/T1CKI 11 11 I/O ST RC0 can also be the Timer1 oscillator output or Timer1 clockinput.

RC1/T1OSI 12 12 I/O ST RC1 can also be the Timer1 oscillator input. RC2/CCP1 13 13 I/O ST RC2 can also be the Capture1 input/Compare1 output/

PWM1 output.RC3 14 14 I/O STRC4 15 15 I/O STRC5 16 16 I/O STRC6/TX/CK 17 17 I/O ST RC6 can also be the USART Asynchronous Transmit or

Synchronous Clock.RC7/RX/DT 18 18 I/O ST RC7 can also be the USART Asynchronous Receive or

Synchronous Data.VSS 8, 19 8, 19 P Ground reference for logic and I/O pins.VDD 20 20 P Positive supply for logic and I/O pins.Legend: I = input O = output I/O = input/output P = power

OD = Open Drain = Not used TTL = TTL input ST = Schmitt Trigger inputNote 1: This buffer is a Schmitt Trigger input when configured as the external interrupt or LVP mode.

2: This buffer is a Schmitt Trigger input when used in Serial Programming mode.3: This buffer is a Schmitt Trigger input when configured in RC Oscillator mode and a CMOS input otherwise.

Caractersticas Gerais

- RISC CPU (35 instrues)

- Clock: De 0 20 Mhz ( 200 ns por instruo)

- FLASH Program Memory: 2K

- EEPROM Data Memory: 64 bytes

- Data Memory (RAM): 128 bytes

- Pinagem compatvel com a famlia PIC16

- Interrupes (11 fontes)

- Power-on Reset (POR)

- Power-up Timer (PWRT)

- Watchdog Timer (WDT)

- Brown-out Reset (BOR)

- Code Protection

- Data Protection

- SLEEP Mode

- Oscilador selecionvel

- In-Circuit-Serial Programming (ICSP) via dois pinos

- Tenso de operao: 2 5,5 Volts

- Corrente de sada: 25 mA

- Baixo consumo de potncia:

- < 1,6mA @ 5V, 4 MHz - 20uA @ 3V, 32KHz - < 1uA em SLEEP Mode

- Trs Timers (TIMER0, TIMER1 e TIMER2)

- Compare, Capture e PWM mdulo (CCP)

- Conversor A/D de mltiplos canais

- Universal Synchronous Asynchronous Receiver

Transmitter (USART/SCI)