DEVICE OVERVIEW

This document contains device specific information for the PIC12F635/PIC16F636/639 devices.

High-Performance RISC CPU:

• Only 35 instructions to learn:

- All single-cycle instructions except branches

• Operating speed:

- DC – 20 MHz oscillator/clock input

- DC – 200 ns instruction cycle

• Interrupt capability

• 8-level deep hardware stack

• Direct, Indirect and Relative Addressing modes

Special Microcontroller Features:

• Precision Internal Oscillator:

- Factory calibrated to ±1, typical

- Software selectable frequency range of 8 MHz to 125 kHz

- Software tunable

- Two-Speed Start-up mode

- Crystal fail detect for critical applications

- Clock mode switching during operation for power savings

• Clock mode switching for low-power operation

• Power-Saving Sleep mode

• Wide operating voltage range (2.0V-5.5V)

• Industrial and Extended Temperature range

• Power-on Reset (POR)

• Wake-up Reset (WUR)

• Independent weak pull-up/pull-down resistors

• Programmable Low-Voltage Detect (PLVD)

• Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)

• Brown-out Reset (BOR) with software control option

• Enhanced Low-Current Watchdog Timer (WDT) with on-chip oscillator (software selectable nominal 268 seconds with full prescaler) with software enable

• Multiplexed Master Clear with pull-up/input pin

• Programmable code protection (program and data independent)

• High-Endurance Flash/EEPROM cell:

- 100,000 write Flash endurance

- 1,000,000 write EEPROM endurance

- Flash/Data EEPROM Retention: > 40 years

Low-Power Features:

• Standby Current:

- 1 nA @ 2.0V, typical

• Operating Current:

- 8.5 μA @ 32 kHz, 2.0V, typical

- 100 μA @ 1 MHz, 2.0V, typical

• Watchdog Timer Current:

- 1 μA @ 2.0V, typical (Continue ...)

PIC16F639属于集成电路（IC） > 微控制器。微芯科技股份有限公司制造生产的PIC16F639微控制器微控制器产品是相对复杂的用户可编程数字逻辑器件。这些产品与视为微控制器的器件密切相关，两者之间的区别主要体现在制造商选择的用词。不过按照传统，微控制器集成了工作存储器，也更可能包含混合信号外设，并且往往与更简单的软件范例结合使用，旨在重复执行一系列预定义的任务。