●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
