Datasheet PIC16F631, PIC16F677, PIC16F685, PIC16F687, PIC16F689 Datasheet

...

PIC16F631/677/685/687/689/690

20-Pin Flash-Based, 8-Bit CMOS Micr ocontrollers

High-Performance RISC CPU

• Only 35 Instructions to Le arn:

- All single-cycle instructions except branches

• Operating Speed:

- DC – 20 MHz oscillator/clock input

- DC – 200 ns instruction cycle

• Interrupt Capability

• 8-Level Deep Hardware Stack

• Direct, Indirect and Relative Addressing modes

Special Microcontroller Features

• Precision Internal Oscillator:

- Factory calibrated to ± 1%

- Software selectable frequency range of 8 MHz to 32 kHz

- Software tunable

- Two-Speed Start-up mode

- Crystal fail detect for critical applications

- Clock mode switching during operation for power savings

• Power-Saving Sleep mode

• Wide Operating Voltage Range (2.0V-5.5V)

• Industrial and Extend ed Temperature Range

• Power-on Reset (POR)

• Power-up Timer (PWRTE) and Oscillator Start-up Timer (OST)

• Brown-out Reset (BOR) with Software Control Option

• Enhanced Low-Current Watchdog Timer (WDT) with On-Chip Oscillator (Sof t wa re sel ec t ab le nominal 268 Seconds with Full Prescaler) with Software Enable

• Multiplexed Master Clear/Input Pin

• Programmable Code Protection

• High Endurance Flash/EEPROM Cell:

- 100,000 write Flash endurance

- 1,000,000 write EEPROM endurance

- Flash/Data EEPROM retention: > 40 years

• Enhanced USART Module:

- Supports RS-485, RS-232 and LIN 2.0

- Auto-Baud Detect

- Auto-wake-up on Start bit

Low-Power Features

• Standby Current:

- 50 nA @ 2.0V, typical

• Operating Current:

-11A @ 32 kHz, 2.0V, typical

-220A @ 4 MHz, 2.0V, typical

• Watchdog Timer Current:

-<1A @ 2.0V, typical

Peripheral Features

• 17 I/O Pins and 1 Input-Only Pin:

- High current source/sink for direct LED drive

- Interrupt-on-Change pin

- Individually programmable weak pull-ups

- Ultra Low-Power Wake-up (ULPWU)

• Analog Compar ator Module with:

- Two analog comparators

- Programmable on-chip voltage reference

REF) module (% of VDD)

(CV

- Comparator inputs and outputs externally accessible

- SR Latch mode

- Timer 1 Gate Sync Latch

- Fixed 0.6V V

• A/D Converter:

- 10-bit resolution and 12 channels

• Timer0: 8-Bit Timer/Counter with 8-Bit Programmable Prescaler

• Enhanced Timer1:

- 16-bit timer/counter with prescaler

- External Timer1 Gate (count enable)

- Option to use OSC1 and OSC2 in LP mode

as Timer1 oscillator if INTOSC mode selected

• Timer2: 8-Bit Timer/Counter with 8-Bit Period Register, Prescaler and Postscaler

• Enhanced Capture, Compare, PWM+ Module:

- 16-bit Capture, max resolution 12.5 ns

- Compare, max resolution 200 ns

- 10-bit PWM with 1, 2 or 4 output channels,

programmable “dead time”, max frequency 20 kHz

- PWM output steering control

• Synchronous Serial Port (SSP):

- SPI mode (Master and Slave)

C™ (Master/Slave modes):

•I

C™ address mask

-I

• In-Circuit Serial Prog ram ming Pins

REF

(ICSPTM) via Two

 2005-2015 Microchip Technology Inc. DS40001262F-page 1

PIC16F631/677/685/687/689/690

20-pin PDIP, SOIC, SSOP

PIC16F631

VDD

RA5/T1CKI/OSC1/CLKIN

RA4/T1G

/OSC2/CLKOUT

RA3/MCLR

/VPP RC5

RC4/C2OUT

RC3/C12IN3-

RC6 RC7 RB7

VSS RA0/C1IN+/ICSPDAT/ULPWU RA1/C12IN0-/ICSPCLK RA2/T0CKI/INT/C1OUT RC0/C2IN+ RC1/C12IN1RC2/C12IN2RB4 RB5 RB6

1 2 3 4

20 19 18 17

5 6 7

16 15

14 8 9 10

Program

Memory

Device

Flash

(words)

Data Memory

SRAM

EEPROM

(bytes)

I/O

10-bit A/D

(ch)

Comparators

Timers

8/16-bit

SSP ECCP+ EUSART

PIC16F631 1024 64 128 18 — 2 1/1 No No No PIC16F677 2048 128 256 18 12 2 1/1 Yes No No PIC16F685 4096 256 256 18 12 2 2/1 No Yes No PIC16F687 2048 128 256 18 12 2 1/1 Yes No Yes PIC16F689 4096 256 256 18 12 2 1/1 Yes No Yes PIC16F690 4096 256 256 18 12 2 2/1 Yes Yes Yes

PIC16F631 Pin Diagram

TABLE 1: PIC16F631 PIN SUMMARY

I/O Pin Analog Comparators Timers Interrupt Pull-up Basic

RA0 19 AN0/ULPWU C1IN+ — IOC Y ICSPDAT RA1 18 AN1 C12IN0- — IOC Y ICSPCLK RA2 17 — C1OUT T0CKI IOC/INT Y — RA3 4 — — — IOC Y RA4 3 — — T1G IOC Y OSC2/CLKOUT RA5 2 — — T1CKI IOC Y OSC1/CLKIN RB4 13 — — — IOC Y — RB5 12 — — — IOC Y — RB6 11 — — — IOC Y — RB7 10 — — — IOC Y — RC0 16 AN4 C2IN+ — — — — RC1 15 AN5 C12IN1- — — — — RC2 14 AN6 C12IN2- — — — — RC3 7 AN7 C12IN3- — — — — RC4 6 — C2OUT — — — — RC55— ———— — RC6 8 — — — — — — RC79— ———— —

— 1 — — — — — VDD —20— ———— VSS

Note 1: Pull-up enabled only with external MCLR configuration.

DS40001262F-page 2  2005-2015 Microchip Technology Inc.

(1)

MCLR/VPP

PIC16F631/677/685/687/689/690

20-pin PDIP, SOIC, SSOP

PIC16F677

VDD

RA5/T1CKI/OSC1/CLKIN

RA4/AN3/T1G

/OSC2/CLKOUT

RA3/MCLR

/VPP RC5

RC4/C2OUT

RC3/AN7C12IN3-

RC6/AN8/SS

RC7/AN9/SDO

RB7

VSS RA0/AN0/C1IN+/ICSPDAT/ULPWU RA1/AN1/C12IN0-/V

REF/ICSPCLK

RA2/AN2/T0CKI/INT/C1OUT RC0/AN4/C2IN+ RC1/AN5/C12IN1RC2/AN6/C12IN2RB4/AN10/SDI/SDA RB5/AN11 RB6/SCK/SCL

1 2 3 4

20 19 18 17

5 6 7

16 15

14 8 9 10

PIC16F677 Pin Diagram

TABLE 2: PIC16F631 PIN SUMMARY

I/O Pin Analog Comparators Timers Interrupt Pull-up Basic

— 1 — — — — — VDD —20— ———— VSS

Note 1: Pull-up enabled only with external MCLR configuration.

(1)

MCLR/VPP

 2005-2015 Microchip Technology Inc. DS40001262F-page 3

PIC16F631/677/685/687/689/690

20-pin PDIP, SOIC, SSOP

PIC16F685

VDD

RA5/T1CKI/OSC1/CLKIN

RA4/AN3/T1G

/OSC2/CLKOUT

RA3/MCLR

/VPP

RC5/CCP1/P1A

RC4/C2OUT/P1B

RC3/AN7/C12IN3-/P1C

RC6/AN8 RC7/AN9

RB7

VSS RA0/AN0/C1IN+/ICSPDAT/ULPWU RA1/AN1/C12IN0-/V

REF/ICSPCLK

RA2/AN2/T0CKI/INT/C1OUT RC0/AN4/C2IN+ RC1/AN5/C12IN1RC2/AN6/C12IN2-/P1D RB4/AN10 RB5/AN11 RB6

1 2 3 4

20 19 18 17

5 6 7

16 15

14 8 9 10

13 12

PIC16F685 Pin Diagram

TABLE 3: PIC16F685 PIN SUMMARY

I/O Pin Analog Comparators Timers ECCP Interrupt Pull-up Basic

RA0 19 AN0/ULPWU C1IN+ — — IOC Y ICSPDAT RA1 18 AN1/VREF C12IN0- — — IOC Y ICSPCLK RA2 17 AN2 C1OUT T0CKI — IOC/INT Y — RA3 4 — — — — IOC Y RA4 3 AN3 —

T1G

— IOC Y OSC2/CLKOUT RA5 2 — — T1CKI — IOC Y OSC1/CLKIN RB4 13 AN10 — — — IOC Y — RB5 12 AN11 — — — IOC Y — RB6 11 — — — — IOC Y — RB7 10 — — — — IOC Y — RC0 16 AN4 C2IN+ — — — — — RC1 15 AN5 C12IN1- — — — — — RC2 14 AN6 C12IN2- — P1D — — — RC3 7 AN7 C12IN3- — P1C — — — RC4 6 — C2OUT — P1B — — — RC5 5 — — — CCP1/P1A — — — RC6 8 AN8 — — — — — — RC7 9 AN9 — — — — — —

— 1 — — — — — — VDD —20 — — — — — — VSS

Note 1: Pull-up activated only with external MCLR configuration.

(1)

MCLR/VPP

DS40001262F-page 4  2005-2015 Microchip Technology Inc.

PIC16F631/677/685/687/689/690

20-pin PDIP, SOIC, SSOP

PIC16F687/689

VDD

RA5/T1CKI/OSC1/CLKIN

RA4/AN3/T1G

/OSC2/CLKOUT

RA3/MCLR

/VPP RC5

RC4/C2OUT

RC3/AN7/C12IN3-

RC6/AN8/SS

RC7/AN9/SDO

RB7/TX/CK

VSS RA0/AN0/C1IN+/ICSPDAT/ULPWU RA1/AN1/C12IN0-/V

REF/ICSPCLK

RA2/AN2/T0CKI/INT/C1OUT RC0/AN4/C2IN+ RC1/AN5/C12IN1RC2/AN6/C12IN2RB4/AN10/SDI/SDA RB5/AN11/RX/DT RB6/SCK/SCL

1 2 3 4

20 19 18 17

5 6 7

16 15

14 8 9 10

PIC16F687/689 Pin Diagram

T ABLE 4: PIC16F687/689 PIN SUMMARY

I/O Pin Analog Comparators Timers EUSART SSP Interrupt Pull-up Basic

RA0 19 AN0/ULPWU C1IN+ — — — IOC Y ICSPDAT RA1 18 AN1/VREF C12IN0- — — — IOC Y ICSPCLK RA2 17 AN2 C1OUT T0CKI — — IOC/INT Y RA3 4 — — — — — IOC Y RA4 3 AN3 —

T1G

— — IOC Y OSC2/CLKOUT RA5 2 — — T1CKI — — IOC Y OSC1/CLKIN RB4 13 AN10 — — — SDI/SDA IOC Y — RB5 12 AN11 — — RX/DT — IOC Y — RB6 11 — — — — SCL/SCK IOC Y — RB7 10 — — — TX/CK — IOC Y — RC0 16 AN4 C2IN+ — — — — — — RC1 15 AN5 C12IN1- — — — — — — RC2 14 AN6 C12IN2- — — — — — — RC3 7 AN7 C12IN3- — — — — — — RC4 6 — C2OUT — — — — — — RC5 5 — — — — — — — — RC6 8 AN8 — — —

— — —

RC7 9 AN9 — — — SDO — — —

— 1 — — — — — — — VDD —20 — — — — — — — VSS

Note1: Pull-up activated only with external MCLR configuration.

(1)

MCLR/VPP

 2005-2015 Microchip Technology Inc. DS40001262F-page 5

PIC16F631/677/685/687/689/690

20-pin PDIP, SOIC, SSOP

PIC16F690

VDD

RA5/T1CKI/OSC1/CLKIN

RA4/AN3/T1G

/OSC2/CLKOUT

RA3/MCLR

/VPP

RC5/CCP1/P1A

RC4/C2OUT/P1B

RC3/AN7/C12IN3-/P1C

RC6/AN8/SS

RC7/AN9/SDO

RB7/TX/CK

VSS RA0/AN0/C1IN+/ICSPDAT/ULPWU RA1/AN1/C12IN0-/V

REF/ICSPCLK

RA2/AN2/T0CKI/INT/C1OUT RC0/AN4/C2IN+ RC1/AN5/C12IN1RC2/AN6/C12IN2-/P1D RB4/AN10/SDI/SDA RB5/AN11/RX/DT RB6/SCK/SCL

1 2 3 4

20 19 18 17

5 6 7

16 15

14 8 9 10

PIC16F690 Pin Diagram (PDIP, SOIC, SSOP)

TABLE 5: PIC16F690 PIN SUMMARY

I/O Pin Analog Comparators Timers ECCP EUSART SSP Interrupt Pull-up Basic

RA0 19 AN0/ULPWU C1IN+ — — — — IOC Y ICSPDAT RA1 18 AN1/V RA2 17 AN2 C1OUT T0CKI — — — IOC/INT Y RA3 4 — — — — — — IOC Y RA4 3 AN3 — RA5 2 — — T1CKI — — — IOC Y OSC1/CLKIN RB4 13 AN10 — — — — SDI/SDA IOC Y — RB5 12 AN11 — — — RX/DT — IOC Y — RB6 11 — — — — SCL/SCK IOC Y — RB7 10 — — — — TX/CK — IOC Y — RC0 16 AN4 C2IN+ — — — — — — — RC1 15 AN5 C12IN1- — — — — — — — RC2 14 AN6 C12IN2- — P1D — — — — — RC3 7 AN7 C12IN3- — P1C — — — — — RC4 6 — C2OUT — P1B — — — — — RC5 5 — — — CCP1/P1A — — — — — RC6 8 AN8 — — — — RC7 9 AN9 — — — — SDO — — —

— 1 — — — — — — — — VDD —20 — — — — — — — — VSS

Note 1: Pull-up activated only with external MCLR configuration.

REF C12IN0- — — — — IOC Y ICSPCLK

T1G

(1)

— — — IOC Y OSC2/CLKOUT

— — —

MCLR/VPP

DS40001262F-page 6  2005-2015 Microchip Technology Inc.

20-pin QFN

RA4/AN3/T1G/OSC2/CLKOUT

RA5/T1CKI/OSC1/CLKIN

VSS

RA0/AN0/C1IN+/ICSPDAT/ULPWU

RC7/AN9/SDO

(2)

RB7/TX/CK

(3)

RB6/SCK/SCL

(2)

RB5/AN11/RX/DT

(3)

RB4/AN10/SDI/SDA

(2)

RA3/MCLR/VPP

RC5/CCP1/P1A

(1)

RC4/C2OUT/P1B

(1)

RC3/AN7/C12IN3-/P1C

(1)

RC6/AN8/SS

(2)

RA1/AN1/C12IN0-/VREF/ICSPCLK RA2/AN2/T0CKI/INT/C1OUT RC0/AN4/C2IN+ RC1/AN5/C12IN1RC2/AN6/C12IN2-/P1D

(1)

PIC16F631/677/

685/687/689/690

14 13 12

1 2

3 4

Note 1: CCP1/P1A, P1B, P1C and P1D are available on PIC16F685/PIC16F690 only.

2: SS

, SDO, SDI/SDA and SCL/SCK are available on PIC16F677/PIC16F687/PIC16F689/PIC16F690 only.

3: RX/DT and TX/CK are available on PIC16F687/PIC16F689/PIC16F690 only.

PIC16F631/677/685/687/689/690

PIC16F631/677/685/687/689/690 Pin Diagram (QFN)

 2005-2015 Microchip Technology Inc. DS40001262F-page 7

PIC16F631/677/685/687/689/690

Table of Contents

1.0 Device Overview .......................................................................................................................................................................... 9

2.0 Memory Organization................................................................................................................................................................. 24

3.0 Oscillator Module (With Fail-Safe Clock Monitor).......................................................................................................................45

4.0 I/O Ports ............................................. .................................................... .................................................................................... 57

5.0 Timer0 Module ........................................................................................................................................................................... 79

6.0 Timer1 Module with Gate Control............................................................................................................................................... 82

7.0 Timer2 Module ........................................................................................................................................................................... 89

8.0 Comparator Module......................................................... .... .... ......... .... .... .... ......... .... .... .............................................................91

9.0 Analog-to-Digital Converter (ADC) Module .............................................................................................................................. 105

10.0 Data EEPROM and Flash Program Memory Control........ ...... ................. ................. ........ ................. ...................................... 117

11.0 Enhanced Capture/Compare/PWM Module ....................................... .. .... .... ......... .... .. .... ......... .... .. .... . ..................................... 125

12.0 Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART)............................................................... 148

13.0 SSP Module Overview ............................................................................................................................................................. 175

14.0 Special Features of th e CPU...................................................... ....................................... ....................................................... 193

15.0 Instruction Set Summary.......................................................................................................................................................... 212

16.0 Development Support............................................................................................................................................................... 221

17.0 Electrical Specifications............................................................................................................................................................225

18.0 DC and AC Characteristics Graphs and Tables............................................................................... ........................................258

19.0 Packaging Information........................................... ....................................... ............................................................................285

The Microchip Web Site.................. ........................................ ........................................................................................................... 295

Customer Change Notification Service .............................................................................................................................................. 295

Customer Support..............................................................................................................................................................................295

Product Identification System.............................................................................................................................................................296

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You can determine the version of a data sheet by e xamining its literature number found on the bottom outside corner of any page. The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).

Errata

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To determine if an errata sheet exists for a particular device, please check with one of the following:

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using.

Customer Notification System

DS40001262F-page 8  2005-2015 Microchip Technology Inc.

PIC16F631/677/685/687/689/690

Power-up

Timer

Oscillator

Start-up Timer

Power-on

Reset

Watchdog

Timer

Brown-out

Reset

Flash

Program

Memory

Data Bus

Program

Bus

Instruction Reg

Program Counter

RAM

File

Registers

Direct Addr

RAM Addr

Addr MUX

Indirect

Addr

FSR Reg

STATUS Reg

MUX

ALU

W Reg

Instruction

Decode and

Control

Timing

Generation

OSC1/CLKI

OSC2/CLKO

8-Level Stack (13-bit)

64 bytes

1K x 14

VDD

INT

Configuration

Internal

Oscillator

MCLR

Block

VSS

Timer0 Timer1

Analog Comparators

C1IN- C1IN+ C1OUT

and Reference

C2IN- C2IN+ C2OUT

T1G T1CKIT0CKI

Data

EEPROM

128 Bytes

EEDAT

EEADR

RB4 RB5 RB6

RB7

PORTA

RA0 RA1 RA2 RA3 RA4 RA5

PORTC

RC0 RC1 RC2 RC3 RC4 RC5 RC6 RC7

PORTB

Ultra Low-Power

Wake-up

ULPWU

1.0 DEVICE OVERVIEW

The PIC16F631/677/685/687/689/690 devices are covered by this dat a sheet. The y are availab le in 20-pin PDIP, SOIC, TSSOP and QFN packages.

FIGURE 1-1: PIC16F631 BLOCK DIAGRAM

Block Diagrams and pinout descriptions of the devices are as follows:

• PIC16F631 (Figure 1-1, Table 1-1)

• PIC16F677 (Figure 1-2, Table 1-2)

• PIC16F685 (Figure 1-3, Table 1-3)

• PIC16F687/PIC16F689 (Figure 1-4, Table 1-4)

• PIC16F690 (Figure 1-5, Table 1-5)

 2005-2015 Microchip Technology Inc. DS40001262F-page 9

Power-up

Timer

Oscillator

Start-up Timer

Power-on

Reset

Watchdog

Timer

Brown-out

Reset

RB4 RB5 RB6 RB7

Flash

Program Memory

Data Bus

Program

Bus

Instruction Reg

Program Counter

RAM

File

Registers

Direct Addr

RAM Addr

Addr MUX

Indirect

Addr

FSR Reg

STATUS Reg

MUX

ALU

W Reg

Instruction

Decode and

Control

Timing

Generation

OSC1/CLKI

OSC2/CLKO

PORTA

8-Level Stack (13-bit)

128 bytes

2K x 14

VDD

RA0 RA1

RA2 RA3 RA4 RA5

INT

Configuration

Internal

Oscillator

MCLR

Block

PORTC

RC0 RC1 RC2 RC3 RC4 RC5 RC6 RC7

PORTB

VSS

Timer0 Timer1

Analog Comparators

Analog-to-Digital Converter

C1IN- C1IN+ C1OUT

VREF

and Reference

C2IN- C2IN+ C2OUT

AN0 AN1 AN2 AN3 AN4 AN5 AN6

AN8 AN9 AN10 AN11

AN7

T1G T1CKIT0CKI

Data

EEPROM

256 Bytes

EEDAT

EEADR

SDO

SDI/ SCK/

Synchronous

Serial Port

SDA SCL

Ultra Low-Power

Wake-up

ULPWU

PIC16F631/677/685/687/689/690

FIGURE 1-2: PIC16F677 BLOCK DIAGRAM

DS40001262F-page 10  2005-2015 Microchip Technology Inc.

PIC16F631/677/685/687/689/690

Power-up

Timer

Oscillator

Start-up Timer

Power-on

Reset

Watchdog

Timer

Brown-out

Reset

RB4 RB5 RB6

RB7

Flash

Program

Memory

Data Bus

Program

Bus

Instruction Reg

Program Counter

RAM

File

Registers

Direct Addr

RAM Addr

Addr MUX

Indirect

Addr

FSR Reg

STATUS Reg

MUX

ALU

W Reg

Instruction

Decode and

Control

Timing

Generation

OSC1/CLKI

OSC2/CLKO

PORTA

8-Level Stack (13-bit)

256 bytes

4K x 14

VDD

RA0 RA1 RA2 RA3 RA4 RA5

INT

Configuration

Internal

Oscillator

MCLR

Block

PORTC

RC0 RC1

RC2 RC3 RC4 RC5 RC6 RC7

PORTB

VSS

ECCP+

CCP1/

P1B P1C P1DP1A

Data

EEPROM

256 Bytes

EEDAT

EEADR

Timer0 Timer1

Analog Comparators

Analog-to-Digital Converter

C1IN- C1IN+ C1OUT

VREF

and Reference

C2IN- C2IN+ C2OUT

AN0 AN1 AN2 AN3 AN4 AN5 AN6

AN8 AN9 AN10 AN11

AN7

T1G

T1CKIT0CKI

Timer2

Ultra Low-Power

Wake-up

ULPWU

FIGURE 1-3: PIC16F685 BLOCK DIAGRAM

 2005-2015 Microchip Technology Inc. DS40001262F-page 11

Power-up

Timer

Oscillator

Start-up Timer

Power-on

Reset

Watchdog

Timer

Brown-out

Reset

RB4 RB5 RB6

RB7

Flash

Program

Memory

Data Bus

Program

Bus

Instruction Reg

Program Counter

Direct Addr

RAM Addr

Addr MUX

Indirect

Addr

FSR Reg

STATUS Reg

MUX

ALU

W Reg

Instruction

Decode and

Control

Timing

Generation

OSC1/CLKI

OSC2/CLKO

PORTA

8-Level Stack (13-bit)

(1)

/4K x 14

VDD

RA0 RA1

RA2 RA3 RA4 RA5

INT

Configuration

Internal

Oscillator

MCLR

Block

PORTC

RC0 RC1 RC2 RC3 RC4 RC5 RC6 RC7

PORTB

VSS

SDO

SDI/ SCK/

Synchronous

Serial Por t

SDA SCL

Data

EEPROM

256 Bytes

EEDAT

EEADR

RAM

File

Registers

128

(1)

/256 bytes

Note 1: PIC16F687 only.

Timer0 Timer1

Analog Comparators

Analog-to-Digital Converter

C1IN- C1IN+ C1OUT

VREF

and Reference

C2IN- C2IN+ C2OUT

AN0 AN1 AN2 AN3 AN4 AN5 AN6

AN8 AN9 AN10 AN11

AN7

T1G T1CKIT0CKI

EUSART

TX/CK

Ultra Low-Power

Wake-up

ULPWU

RX/DT

PIC16F631/677/685/687/689/690

FIGURE 1-4: PIC16F687/PIC16F689 BLOCK DIAGRAM

DS40001262F-page 12  2005-2015 Microchip Technology Inc.

Power-up

Timer

Oscillator

Start-up Timer

Power-on

Reset

Watchdog

Timer

Brown-out

Reset

RB4 RB5 RB6 RB7

Flash

Program Memory

Data Bus

Program

Bus

Instruction Reg

Program Counter

RAM

File

Registers

Direct Addr

RAM Addr

Addr MUX

Indirect

Addr

FSR Reg

STATUS Reg

MUX

ALU

W Reg

Instruction

Decode and

Control

Timing

Generation

OSC1/CLKI

OSC2/CLKO

PORTA

8-Level Stack (13-bit)

256 bytes

4k x 14

VDD

RA0 RA1 RA2 RA3 RA4 RA5

INT

Configuration

Internal

Oscillator

MCLR

Block

PORTC

RC0 RC1 RC2 RC3 RC4 RC5 RC6 RC7

PORTB

VSS

ECCP+

CCP1/

P1B P1C P1D

EUSART

P1A

TX/CK RX/DT

SDO

SDI/ SCK/

Synchronous

Serial Port

SDA SCL

Data

EEPROM

256 Bytes

EEDAT

EEADR

Timer0

Timer1

Analog Comparators

Analog-to-Digital Converter

C1IN- C1IN+ C1OUT

VREF

and Reference

C2IN- C2IN+ C2OUT

AN0 AN1 AN2 AN3 AN4 AN5 AN6

AN8 AN9 AN10 AN11

AN7

T1G T1CKI

T0CKI

Ultra Low-Power

Wake-up

ULPWU

Timer2

PIC16F631/677/685/687/689/690

FIGURE 1-5: PIC16F690 BLOCK DIAGRAM

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TABLE 1-1: PINOUT DESCRIPTION – PIC16F631

Input

Name Function

RA0/C1IN+/ICSPDAT/ULPWU RA0 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

C1IN+ AN — Comparator C1 non-inverting input.

ICSPDAT ST CMOS ICSP™ Data I/O.

ULPWU AN — Ultra Low-Power Wake-up input.

RA1/C12IN0-/ICSPCLK RA1 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

C12IN0- AN — Comparator C1 or C2 inverting input.

ICSPCLK ST — ICSP™ clock.

RA2/T0CKI/INT/C1OUT RA2 ST CMOS General purpose I/O. Individually controlled interrupt-on-change.

T0CKI ST — Timer0 clock input.

INT ST — External interrupt pin.

C1OUT — CMOS Com parator C1 output.

RA3/MCLR

RA4/T1G

RA5/T1CKI/OSC1/CLKIN RA5 TTL CMO S General purpose I/O. Individually controlled interrupt-on-change.

RB4 RB4 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

RB5 RB5 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

RB6 RB6 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

RB7 RB7 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

RC0/C2IN+ RC0 ST CMOS General purpose I/O.

RC1/C12IN1- RC1 ST CMOS General purpose I/O.

RC2/C12IN2- RC2 ST CMOS General purpose I/O.

RC3/C12IN3- RC3 ST CMOS General purpose I/O.

RC4/C2OUT RC4 ST CMOS General purpose I/O.

RC5 RC5 ST CMOS General purpose I/O. Legend: AN = Analog input or output CMOS=CMOS compatible input or output

/VPP RA3 TTL — General purpose input. Individually controlled interrupt-on-

MCLR

PP HV — Programming voltage.

/OSC2/CLKOUT RA4 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

T1G

OSC2 — XTAL Crystal/Resonator.

CLKOUT — CMO S F

T1CKI ST — Timer1 clock input. OSC1 XTAL — Crystal/Resonator.

CLKIN ST — External clock input/RC oscillator connection.

C2IN+ AN — Comparator C2 non-inverting input.

C12IN1- AN — Comparator C1 or C2 inverting input.

C12IN2- AN — Comparator C1 or C2 inverting input.

C12IN3- AN — Comparator C1 or C2 inverting input.

C2OUT — CMOS Com parator C2 output.

TTL = TTL compatible input ST= Schmitt Trigger input with CMOS levels HV = High Voltage XTAL= Crys tal

Output

Type

Individually enabled pull-up.

change.

ST — Master Clear with internal pull-up.

Individually enabled pull-up.

ST — Timer1 gate input.

OSC/4 output.

Individually enabled pull-up.

Description

DS40001262F-page 14  2005-2015 Microchip Technology Inc.

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TABLE 1-1: PINOUT DESCRIPTION – PIC16F631 (CONTINUED)

Input

Name Function

RC6 RC6 ST CMOS General purpose I/O. RC7 RC7 ST CMOS General purpose I/O.

SS VSS Power — Ground reference.

DD VDD Power — Positive supply.

V Legend: AN = Analog input or output CMOS=CMOS compatible input or output

TTL = TTL compatible input ST= Schmitt Trigger input with CMOS levels HV = High Voltage XTAL= Crys tal

Type

Output

Type

Description

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TABLE 1-2: PINOUT DESCRIPTION – PIC16F677

Input

Name Function

RA0/AN0/C1IN+/ICSPDAT/ ULPWU

RA1/AN1/C12IN0-/V ICSPCLK

RA2/AN2/T0CKI/INT/C1OUT RA2 ST CMOS General purpose I/O. Individually controlled interrupt-on-change.

RA3/MCLR

RA4/AN3/T1G

RA5/T1CKI/OSC1/CLKIN RA5 TTL CMO S General purpose I/O. Individually controlled interrupt-on-change.

RB4/AN10/SDI/SDA RB4 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

RB5/AN11 RB5 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

RB6/SCK/SCL RB6 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

Legend: AN = Analog input or output CMOS=CMOS compatible input or output

/VPP RA3 TTL — General purpose input. Individually controlled interrupt-on-

REF/

/OSC2/CLKOUT RA4 T TL CM O S General purpose I/O. Individually controlled interrupt-on-change.

TTL = TTL compatible input ST= Schmitt Trigger input with CMOS levels HV = High Voltage XTAL= Crys tal

RA0 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

AN0 AN — A/D Channel 0 input.

C1IN+ AN — Comparator C1 non-inverting input.

ICSPDAT ST CMOS ICSP™ Data I/O.

ULPWU AN — Ultra Low-Power Wake-up input.

RA1 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

AN1 AN — A/D Channel 1 input.

C12IN0- AN — Comparator C1 or C2 inverting input.

REF AN — External Voltage Reference for A/D.

ICSPCLK ST — ICSP™ clock.

AN2 AN — A/D Channel 2 input.

T0CKI ST — Timer0 clock input.

INT ST — External interrupt pin.

C1OUT — CMOS Com parator C1 output.

MCLR

PP HV — Programming voltage.

AN3 AN — A/D Channel 3 input. T1G

OSC2 — XTAL Crystal/Resonator.

CLKOUT — CMO S F

T1CKI ST — Timer1 clock input. OSC1 XTAL — Crystal/Resonator.

CLKIN ST — External clock input/RC oscillator connection.

AN10 AN — A/D Channel 10 input.

SDI ST — SPI data input.

SDA ST OD I

AN11 AN — A/D Channel 11 input.

SCK ST CMOS SPI clock.

SCL ST OD I

Output

Type

Individually enabled pull-up.

change.

ST — Master Clear with internal pull-up.

Individually enabled pull-up.

ST — Timer1 gate input.

OSC/4 output.

Individually enabled pull-up.

C™ data input/output.

Individually enabled pull-up.

C™ clock.

Description

DS40001262F-page 16  2005-2015 Microchip Technology Inc.

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TABLE 1-2: PINOUT DESCRIPTION – PIC16F677 (CONTINUED)

Input

Name Function

RB7 RB7 TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.

RC0/AN4/C2IN+ RC0 ST CMOS General purpose I/O.

AN4 AN — A/D Channel 4 input.

C2IN+ AN — Comparator C2 non-inverting input.

RC1/AN5/C12IN1- RC1 ST CMOS General purpose I/O.

AN5 AN — A/D Channel 5 input.

C12IN1- AN — Comparator C1 or C2 inverting input.

RC2/AN6/C12IN2- RC2 ST CMOS General purpose I/O.

AN6 AN — A/D Channel 6 input.

C12IN2- AN — Comparator C1 or C2 inverting input.

RC3/AN7/C12IN3- RC3 ST CMOS General purpose I/O.

AN7 AN — A/D Channel 7 input.

C12IN3- AN — Comparator C1 or C2 inverting input.

RC4/C2OUT RC4 ST CMOS General purpose I/O.

C2OUT — CMOS Com parator C2 output. RC5 RC5 ST CMOS General purpose I/O. RC6/AN8/SS

RC7/AN9/SDO RC7 ST CMOS General purpose I/O.

SS VSS Power — Ground reference.

DD VDD Power — Positive supply.

V Legend: AN = Analog input or output CMOS=CMOS compatible input or output

TTL = TTL compatible input ST= Schmitt Trigger input with CMOS levels HV = High Voltage XTAL= Crys tal

RC6 ST CMOS General purpose I/O. AN8 AN — A/D Channel 8 input.

AN9 AN — A/D Channel 9 input.

SDO — CMOS SPI data output.

Output

Type

Individually enabled pull-up.

ST — Slave Select input.

Description

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TABLE 1-3: PINOUT DESCRIPTION – PIC16F685

Input

Name Function

RA0/AN0/C1IN+/ICSPDAT/ ULPWU

RA1/AN1/C12IN0-/V

RA2/AN2/T0CKI/INT/C1OUT RA2 ST CMOS General purpose I/O. Individually controlled interrupt-on-

RA3/MCLR

RA4/AN3/T1G

RA5/T1CKI/OSC1/CLKIN RA5 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

RB4/AN10 RB4 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

RB5/AN11 RB5 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

RB6 RB6 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

RB7 RB7 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

RC0/AN4/C2IN+ RC0 ST CMOS General purpose I/O.

Legend: AN = Analog input or output CMOS=CMOS compatible input or output

/VPP RA3 TTL — General purpose input. Individually controlled interrupt-on-

REF/ICSPCLK RA1 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

/OSC2/CLKOUT RA4 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

TTL = TTL compatible input ST= Schmitt Trigger input with CMOS levels HV = High Voltage XTAL= Crys tal

RA0 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

AN0 AN — A/D Channel 0 input.

C1IN+ AN — Comparator C1 positive input.

ICSPDAT TTL CMOS ICSP™ Data I/O.

ULPWU AN — Ultra Low-Power Wake-up input.

AN1 AN — A/D Channel 1 input.

C12IN0- AN — Comparator C1 or C2 negative input.

REF AN — External Voltage Reference for A/D.

ICSPCLK S T — ICSP™ clock.

AN2 AN — A/D Channel 2 input.

T0CKI ST — Timer0 clock input.

INT ST —

C1OUT — CMOS Comparator C1 output.

MCLR

PP HV — Programming voltage.

AN3 AN — A/D Channel 3 input. T1G

OSC2 — XTAL Cry stal/Resonator.

CLKOUT — CMOS F

T1CKI ST — Timer1 clock input. OSC1 XTAL — Crystal/Resonator. CLKIN ST — External clock input/RC oscillator connection.

AN10 AN — A/D Channel 10 input.

AN11 AN — A/D Channel 11 input.

AN4 AN — A/D Channel 4 input.

C2IN+ AN — Comparator C2 positive input.

Type

Output

Type

change. Individually enabled pull-up.

Description

External interrupt pin.

change.

ST — Master Clear with internal pull-up.

change. Individually enabled pull-up.

ST — Timer1 gate input.

OSC/4 output.

change. Individually enabled pull-up.

DS40001262F-page 18  2005-2015 Microchip Technology Inc.

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TABLE 1-3: PINOUT DESCRIPTION – PIC16F685 (CONTINUED)

Input

Name Function

RC1/AN5/C12IN1- RC1 ST CMOS General purpose I/O.

AN5 AN — A/D Channel 5 input.

C12IN1- AN — Comparator C1 or C2 negative input.

RC2/AN6/C12IN2-/P1D RC2 ST CMOS General purpose I/O.

AN6 AN — A/D Channel 6 input.

C12IN2- AN — Comparator C1 or C2 negative input.

P1D — CMOS PWM output.

RC3/AN7/C12IN3-/P1C RC3 ST CMOS General purpose I/O.

AN7 AN — A/D Channel 7 input.

C12IN3- AN — Comparator C1 or C2 negative input.

P1C — CMOS PWM output.

RC4/C2OUT/P1B RC4 ST CMOS General purpose I/O.

C2OUT — CMOS Comparator C2 output.

P1B — CMOS PWM output.

RC5/CCP1/P1A RC5 ST CMOS General purpose I/O.

CCP1 ST CMOS Capture/Compare input.

P1A ST CMOS PWM output.

RC6/AN8 RC6 ST CMOS General purpose I/O.

AN8 AN — A/D Channel 8 input.

RC7/AN9 RC7 ST CMOS General purpose I/O.

AN9 AN — A/D Channel 9 input.

SS VSS Power — Ground reference.

V V

DD VDD Pow er — Positive supply.

Legend: AN = Analog input or output CMOS=CMOS compatible input or output

TTL = TTL compatible input ST= Schmitt Trigger input with CMOS levels HV = High Voltage XTAL= Crys tal

Type

Output

Type

Description

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TABLE 1-4: PINOUT DESCRIPTION – PIC16F687/PIC16F689

Input

Name Function

RA0/AN0/C1IN+/ICSPDAT/ ULPWU

RA1/AN1/C12IN0-/V

RA2/AN2/T0CKI/INT/C1OUT RA2 ST CMOS General purpose I/O. Individually controlled interrupt-on-

RA3/MCLR

RA4/AN3/T1G

RA5/T1CKI/OSC1/CLKIN RA5 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

RB4/AN10/SDI/SDA RB4 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

RB5/AN11/RX/DT RB5 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

Legend: AN = Analog input or output CMOS=CMOS compatible input or outputOD= Open Drain

/VPP RA3 TTL — General purpose input. Individually controlled

REF/ICSPCLK RA1 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

/OSC2/CLKOUT RA4 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

TTL = TTL compatible input ST= Schmitt Trigger input with CMOS levels HV = High Voltage XTAL= Crys tal

RA0 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

AN0 AN — A/D Channel 0 input.

C1IN+ AN — Comparator C1 positive input.

ICSPDAT TTL CMOS ICSP™ Data I/O.

ULPWU AN — Ultra Low-Power Wake-up input.

AN1 AN — A/D Channel 1 input.

C12IN0- AN — Comparator C1 or C2 negative input.

REF AN — External Voltage Reference for A/D.

ICSPCLK S T — ICSP™ clock.

AN2 AN — A/D Channel 2 input.

T0CKI ST — Timer0 clock input.

INT ST — External Interrupt.

C1OUT — CMOS Comparator C1 output.

MCLR

PP HV — Programming voltage.

AN3 AN — A/D Channel 3 input. T1G

OSC2 — XTAL Cry stal/Resonator.

CLKOUT — CMOS F

T1CKI ST — Timer1 clock input. OSC1 XTAL — Crystal/Resonator. CLKIN ST — External clock input/RC oscillator connection.

AN10 AN — A/D Channel 10 input.

SDI ST — SPI data input.

SDA ST OD I

AN11 AN — A/D Channel 11 input.

RX ST — EUSART asynchronous input. DT ST CMOS EUSART synchronous data.

Output

Type

change. Individually enabled pull-up.

interrupt-on-change.

ST — Master Clear with internal pull-up.

change. Individually enabled pull-up.

ST — Timer1 gate input.

OSC/4 output.

change. Individually enabled pull-up.

C™ data input/output.

change. Individually enabled pull-up.

Description

DS40001262F-page 20  2005-2015 Microchip Technology Inc.

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TABLE 1-4: PINOUT DESCRIPTION – PIC16F687/PIC16F689 (CONTINUED)

Input

Name Function

RB6/SCK/SCL RB6 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

SCK ST C M OS SPI clock. SCL ST OD I

RB7/TX/CK RB7 TTL CMOS General purpose I/O. Individually controlled interrupt-on-

TX — CMOS EUSART asynchronous output. CK ST CMOS EUSART synchronous clock.

RC0/AN4/C2IN+ RC0 ST CMOS General purpose I/O.

AN4 AN — A/D Channel 4 input.

C2IN+ AN — Comparator C2 positive input.

RC1/AN5/C12IN1- RC1 ST CMOS General purpose I/O.

AN5 AN — A/D Channel 5 input.

C12IN1- AN — Comparator C1 or C2 negative input.

RC2/AN6/C12IN2- RC2 ST CMOS General purpose I/O.

AN6 AN — A/D Channel 6 input.

C12IN2- AN — Comparator C1 or C2 negative input.

RC3/AN7/C12IN3- RC3 ST CMOS General purpose I/O.

AN7 AN — A/D Channel 7 input.

C12IN3- AN — Comparator C1 or C2 negative input.

RC4/C2OUT RC4 ST CMOS General purpose I/O.

C2OUT — CMOS Comparator C2 output. RC5 RC5 ST CMOS General purpose I/O. RC6/AN8/SS

RC7/AN9/SDO RC7 ST CMOS General purpose I/O.

SS VSS Power — Ground reference.

DD VDD Pow er — Positive supply.

V Legend: AN = Analog input or output CMOS=CMOS compatible input or outputOD= Open Drain

TTL = TTL compatible input ST= Schmitt Trigger input with CMOS levels HV = High Voltage XTAL= Crys tal

RC6 ST CMOS General purpose I/O. AN8 AN — A/D Channel 8 input.

AN9 AN — A/D Channel 9 input.

SDO — CMOS SPI data output.

Output

Type

change. Individually enabled pull-up.

C™ clock.

change. Individually enabled pull-up.

ST — Slave Select input.

Description

 2005-2015 Microchip Technology Inc. DS40001262F-page 21

PIC16F631/677/685/687/689/690

TABLE 1-5: PINOUT DESCRIPTION – PIC16F690