GENERAL DESCRIPTION

The PIC16F627A/628A/648A are 18-pin Flash-based members of the versatile PIC16F627A/628A/648A family of low-cost, high-performance, CMOS, fullystatic, 8-bit microcontrollers.

High-Performance RISC CPU:

• Operating speeds from DC – 20 MHz

• Interrupt capability

• 8-level deep hardware stack

• Direct, Indirect and Relative Addressing modes

• 35 single-word instructions:

- All instructions single cycle except branches

Special Microcontroller Features:

• Internal and external oscillator options:

- Precision internal 4 MHz oscillator factory

calibrated to ±1%

- Low-power internal 48 kHz oscillator

- External Oscillator support for crystals and

resonators

• Power-saving Sleep mode

• Programmable weak pull-ups on PORTB

• Multiplexed Master Clear/Input-pin

• Watchdog Timer with independent oscillator for

reliable operation

• Low-voltage programming

• In-Circuit Serial Programming™ (via two pins)

• Programmable code protection

• Brown-out Reset

• Power-on Reset

• Power-up Timer and Oscillator Start-up Timer

• Wide operating voltage range (2.0-5.5V)

• Industrial and extended temperature range

• High-Endurance Flash/EEPROM cell:

- 100,000 write Flash endurance

- 1,000,000 write EEPROM endurance

- 40 year data retention

Low-Power Features:

• Standby Current:

- 100 nA @ 2.0V, typical

• Operating Current:

- 12 μA @ 32 kHz, 2.0V, typical

- 120 μA @ 1 MHz, 2.0V, typical

• Watchdog Timer Current:

- 1 μA @ 2.0V, typical

• Timer1 Oscillator Current:

- 1.2 μA @ 32 kHz, 2.0V, typical

• Dual-speed Internal Oscillator:

- Run-time selectable between 4 MHz and

48 kHz

- 4 μs wake-up from Sleep, 3.0V, typical

Peripheral Features:

• 16 I/O pins with individual direction control

• High current sink/source for direct LED drive

• Analog comparator module with:

- Two analog comparators

- Programmable on-chip voltage reference

(VREF) module

- Selectable internal or external reference

- Comparator outputs are externally accessible

• Timer0: 8-bit timer/counter with 8-bit

programmable prescaler

• Timer1: 16-bit timer/counter with external crystal/

clock capability

• Timer2: 8-bit timer/counter with 8-bit period

register, prescaler and postscaler

• Capture, Compare, PWM module:

- 16-bit Capture/Compare

- 10-bit PWM

• Addressable Universal Synchronous/Asynchronous

Receiver/Transmitter USART/SCI