PIC12F508 Microcontroller IC

01 January 1970 User Review

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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. 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.


  • Maximum CPU Frequency: 4 MHz
  • Architecture: 8 bit 
  • Program Memory (Flash): 0.75kb
  • RAM: 25 byte
  • Internal Oscillator: 4 MHz
  • No. of Pins: 8
  • Voltage: 2V - 5.5V


  • 4 MHz Precision Internal Oscillator: - Factory calibrated to ±1%
  •  In-Circuit Serial Programming™ (ICSP™) •
  • In-Circuit Debugging (ICD) Support
  •  Power-On Reset (POR)
  •  Device Reset Timer (DRT) •
  • Watchdog Timer (WDT) 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
  •  Selectable Oscillator Options:

            - INTRC: 4 MHz precision Internal oscillator

            - EXTRC: External low-cost RC oscillator

            - XT: Standard crystal/resonator

            - HS: High-speed crystal/resonator (PIC16F505 only)

            - LP: Power-saving, low-frequency crystal

            - EC: High-speed external clock input (PIC16F505 only)


  •  Operating Current: - < 175 μA @ 2V, 4 MHz, typical
  • Standby Current: - 100 nA @ 2V, typical
  •  Low-Power, High-Speed Flash Technology: - 100,000 Flash endurance - > 40 year retention
  •  Fully Static Design
  • Wide Operating Voltage Range: 2.0V to 5.5V
  •  Wide Temperature Range:

​               - Industrial: -40°C to +85°C

               - Extended: -40°C to +125°C

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