The Microchip PIC16F505 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 PIC16F505 devices deliver performance an order of magnitude higher than their competitors in the same price category. The 12 bit wide instructions are highly symmetrical, resulting in a typical 2:1 code compression over other 8 bit microcontrollers in its class. The easy to use and easy to remember instruction set reduces development time significantly.

4 MHz Precision Internal Oscillator Factory calibrated to ±1%
In Circuit Serial Programming
In Circuit Debugging Support
Power On Reset
Device Reset Timer
Watchdog Timer with Dedicated On Chip
RC Oscillator for Reliable Operation
Programmable Code Protection
Multiplexed MCLR Input Pin
Internal Weak Pull Ups on I/O Pins
Power Saving Sleep mode
Wake Wp from Sleep on Pin Change