The PIC12F508/509/16F505 devices from Microchip Technology are low-cost, high-performance, 8-bit, fully-static, Flash-based CMOS microcontrollers. They employ a RISC architecture with only 33 single-word/ single-cycle instructions. All instructions are single cycle (200 μs) except for program branches, which take two cycles. The PIC12F508/509/16F505 devices deliver performance an order of magnitude higher than their competitors in the same price category..

Precision 4 MHz internal oscillator
Baseline Core with 33 Instructions, 2 Stack Levels
All single-cycle Instructions except for program branches which are two cycles
12-bit wide instructions
8-bit wide data path
25 mA source/sink current I/O
Low power (100nA) sleep current
One 8-bit timer (TMR0)
Watchdog timer (WDT)
In Circuit Serial Programming™ (ICSP™) capability
In-Circuit debugging support
Programmable code protection