PIC12F635/PIC16F636/639 Data Sheet
The PIC12F635, PIC16F636, and PIC16F639 are 8‑pin flash‑based, 8‑bit CMOS microcontrollers featuring nanoWatt technology. They provide a high‑performance RISC CPU with only 35 instructions, single‑cycle execution, and an operating speed up to 20 MHz with a 200 ns instruction cycle. The devices include a wide operating voltage range of 2.0 V‑5.5 V, low‑power sleep mode, and extensive peripheral options such as analog comparators, timers, SPI, and a cryptographic module compatible with KeeLoq.
Key specifications include up to 2 KB of program flash, 128 B of SRAM, 256 B of EEPROM, 1 nA standby current at 2.0 V, and typical operating currents of 8.5 µA at 32 kHz. The flash memory offers 100 k write cycles, while the EEPROM endures 1 M write cycles, both with data retention exceeding 40 years. The datasheet also provides detailed pin diagrams, packaging options, and worldwide sales and service contacts.
| Operating Voltage Range | 2.0 V – 5.5 V |
|---|---|
| Standby Current | 1 nA @ 2.0 V (typical) |
| Operating Current | 8.5 µA @ 32 kHz, 2.0 V (typical) |
| Flash Write Endurance | 100 000 write cycles |
| EEPROM Write Endurance | 1 000 000 write cycles |
| Data Retention | > 40 years |
The devices operate from 2.0 V to 5.5 V.
Typical standby current is 1 nA at 2.0 V.
The flash memory can be written up to 100 000 times.
The EEPROM can be written up to 1 000 000 times.