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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