PIC16F628 Programming Manual

●The PIC16F628A-I/P is an 18 pin, flash based, 8 bit microcontroller. This device employs an advanced RISC architecture. The PIC16F628A-I/P has enhanced core features, an eight level deep stack, and multiple internal and external interrupt sources. The separate instruction and data buses of the Harvard architecture allow a 14 bit wide instruction word with the separate 8 bit wide data. The two stage instruction pipeline allows all instructions to execute in a single cycle, except for program branches (which require two cycles). A total of 35 instructions (reduced instruction set) are available, complemented by a large register set.

● Interrupt Capability

● 8 level deep hardware stack

● Direct, indirect, and relative addressing modes

● Internal and external oscillator options

● 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

● Programmable code protection

● Brown-out Reset

● Power-on Reset

● Power-up timer and Oscillator start-up timer

● 1,000,000 write EEPROM endurance

● 40 year data retention

● Dual speed internal oscillator

● Run-time selectable between 4MHz and 48kHz

● 4µs wake-up from Sleep, 3.0V, typ.

● 16 I/O pins with individual direction control