PIC16F631-ESLASHML datasheet(3/294 Pages) MICROCHIP

3 / 294 page

DS41262D-page 1

PIC16F631/677/685/687/689/690

High-Performance RISC CPU:

• Only 35 instructions to learn:

- 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 Extended 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 (software selectable

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

μA @ 32 kHz, 2.0V, typical

-220

μA @ 4 MHz, 2.0V, typical

• Watchdog Timer Current:

-<1

μA @ 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 Comparator module with:

- Two analog comparators

- Programmable on-chip voltage reference

(CVREF) module (% of VDD)

- Comparator inputs and outputs externally

accessible

- SR Latch mode

- Timer 1 Gate Sync Latch

- Fixed 0.6V VREF

• 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

• 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)

•I2C™ (Master/Slave modes):

-I2C™ address mask

• In-Circuit Serial ProgrammingTM (ICSPTM) via two

pins

20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with

nanoWatt Technology

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