DEVICE OVERVIEW

The PIC16F631/677/685/687/689/690 devices are covered by this data sheet. They are available in 20-pin PDIP, SOIC, TSSOP and QFN packages.

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

- Software selectable frequency range of 8 MHz to 32 kHz

- Software tunable

- Two-Speed Start-up mode

- Crystal fail detect for critical applications

- Clock mode switching during operation for power savings

• Power-Saving Sleep mode

• Wide Operating Voltage Range (2.0V-5.5V)

• Industrial and Extended Temperature Range

• Power-on Reset (POR)

• Power-up Timer (PWRTE) 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/Input Pin

• Programmable Code Protection

• High Endurance Flash/EEPROM Cell:

- 100,000 write Flash endurance

- 1,000,000 write EEPROM endurance

- Flash/Data EEPROM retention: > 40 years

• Enhanced USART Module:

- Supports RS-485, RS-232 and LIN 2.0

- Auto-Baud Detect

- Auto-wake-up on Start bit

Low-Power Features:

• Standby Current:

- 50 nA @ 2.0V, typical

• Operating Current:

- 11 μA @ 32 kHz, 2.0V, typical

- 220 μA @ 4 MHz, 2.0V, typical

• Watchdog Timer Current:

- <1 μA @ 2.0V, typical

Peripheral Features:

• 17 I/O Pins and 1 Input-Only Pin:

- High current source/sink for direct LED drive

- Interrupt-on-Change pin

- Individually programmable weak pull-ups

- Ultra Low-Power Wake-up (ULPWU)

• Analog Comparator Module with:

- Two analog comparators

- Programmable on-chip voltage reference (CVREF) module ( of VDD)

- Comparator inputs and outputs externally accessible

- SR Latch mode

- Timer 1 Gate Sync Latch

- Fixed 0.6V VREF

• A/D Converter:

- 10-bit resolution and 12 channels

• Timer0: 8-bit Timer/Counter with 8-bit Programmable Prescaler

• Enhanced Timer1:

- 16-bit timer/counter with prescaler

- External Timer1 Gate (count enable)

- Option to use OSC1 and OSC2 in LP mode as Timer1 oscillator if INTOSC mode selected

• Timer2: 8-bit Timer/Counter with 8-bit Period Register, Prescaler and Postscaler

• Enhanced Capture, Compare, PWM+ Module:

- 16-bit Capture, max resolution 12.5 ns

- Compare, max resolution 200 ns

- 10-bit PWM with 1, 2 or 4 output channels, programmable “dead time”, max frequency 20 kHz

- PWM output steering control

• Synchronous Serial Port (SSP):

- SPI mode (Master and Slave)

• I2C™ (Master/Slave modes):

- I2C™ address mask

• In-Circuit Serial ProgrammingTM (ICSPTM) via Two Pins

PIC16F631-E/ML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PIC16F631-E/ML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。