PIC16F685

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:
- 1 nA @ 2.0V, typical
• Operating Current:
- 20A @ 32 kHz, 2.0V, typical
- <1 mA @ 4 MHz, 5.5V, typical
• Watchdog Timer Current:
- <1A @ 2.0V, typical

Peripheral Features:
• 17 I/O pins and 1 input only pin:
- High current source/sink for direct LED drive
- Interrupt-on-pin change
- Individually programmable weak pull-ups
- Ultra Low-Power Wake-up (ULPWU)
• Analog comparator module with:
- Two analog comparators
- Programmable on-chip voltage reference (CV_REF) module (% of V_DD)
- Comparator inputs and outputs externally accessible
- SR Latch mode
- Timer 1 Gate Sync Latch
• 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 Gate Input mode
- 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 Programming^TM (ICSP^TM) via two pins