PIC16F685-I/SS 8-bit Flash MCU 20MHz Speed 3.5KB Memory 256B EEPROM 12x10-bit ADC 25 I/O Pins Wide 2.0-5.5V Range Industrial -40°C to +85°C SSOP-20 Package for Embedded Control

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 of8 MHz to 32 kHz
Software tunable

Two-Speed Start-up mode

Crystal fail detect for critical applications

Clock mode switching during operation forpower 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-upTimer (OST)

Brown-out Reset (BOR) with Software ControlOption

Enhanced Low-Current Watchdog Timer (WDT)with On-Chip Oscillator (Software selectablenominal 268 Seconds with Full Prescaler) withSoftware 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 1/0 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 externallyaccessible
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 modeas Timer1 oscillator if lNTOSC modeselected
Timer2:8-Bit Timer/Counter with 8-Bit PeriodRegister, 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 frequency20 kHZ
PWM output steering control

Synchronous Serial Port (SSP):

SPl mode (Master and Slave)

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