PIC16F628 Description:
PIC16F628 is FLASH-Based 8-Bit CMOS Microcontroller. The high performance of the PIC16F628 can be attributed to a number of architectural features commonly found in RISC microprocessors. To begin with, the PIC16F628 uses a Harvard architecture, in which, program and data are accessed from separate memories using separate buses. This improves bandwidth over traditional Von Neumann architecture where program and data are fetched from the same memory. Separating program and data memory further allows instructions to be sized differently than 8-bit wide data word. Instruction opcodes are 14-bits wide making it possible to have all single-word instructions. A 14-bit wide program memory access bus fetches a 14-bit instruction in a single cycle. A two-stage pipeline overlaps fetch and execution of instructions.
PIC16F628 Features:
Only 35 instructions to learn
All single cycle instructions (200 ns), except for program branches which are two-cycle
Low power, high speed CMOS FLASH technology
Fully static design
16 I/O pins with individual direction control
Commercial, industrial and extended temperature range
In-circuit Serial Programming™
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