DEVICE OVERVIEW
●This document contains device specific information about the following devices:
●• PIC16F873A
●• PIC16F874A
●• PIC16F876A
●• PIC16F877A
●PIC16F873A/876A devices are available only in 28-pin packages, while PIC16F874A/877A devices are available in 40-pin and 44-pin packages. All devices in the PIC16F87XA family share common architecture with the following differences:
●• The PIC16F873A and PIC16F874A have one-half of the total on-chip memory of the PIC16F876A and PIC16F877A
●• The 28-pin devices have three I/O ports, while the 40/44-pin devices have five
●• The 28-pin devices have fourteen interrupts, while the 40/44-pin devices have fifteen
●• The 28-pin devices have five A/D input channels, while the 40/44-pin devices have eight
●• The Parallel Slave Port is implemented only on the 40/44-pin devices
●Devices Included in this Data Sheet:
●• PIC16F873A • PIC16F874A
●• PIC16F876A • PIC16F877A
●High-Performance RISC CPU:
●• Only 35 single-word instructions to learn
●• All single-cycle instructions except for program branches, which are two-cycle
●• Operating speed: DC – 20 MHz clock input DC – 200 ns instruction cycle
●• Up to 8K x 14 words of Flash Program Memory,
● Up to 368 x 8 bytes of Data Memory (RAM),
● Up to 256 x 8 bytes of EEPROM Data Memory
●• Pinout compatible to other 28-pin or 40/44-pin PIC16CXXX and PIC16FXXX microcontrollers
●Peripheral Features:
●• Timer0: 8-bit timer/counter with 8-bit prescaler
●• Timer1: 16-bit timer/counter with prescaler, can be incremented during Sleep via external crystal/clock
●• Timer2: 8-bit timer/counter with 8-bit period register, prescaler and postscaler
●• Two Capture, Compare, PWM modules
● - Capture is 16-bit, max. resolution is 12.5 ns
● - Compare is 16-bit, max. resolution is 200 ns
● - PWM max. resolution is 10-bit
●• Synchronous Serial Port (SSP) with SPI™ (Master mode) and I2C™ (Master/Slave)
●• Universal Synchronous Asynchronous Receiver Transmitter (USART/SCI) with 9-bit address detection
●• Parallel Slave Port (PSP) – 8 bits wide with external RD, WR and CS controls (40/44-pin only)
●• Brown-out detection circuitry for Brown-out Reset (BOR)
●Analog Features:
●• 10-bit, up to 8-channel Analog-to-Digital Converter (A/D)
●• Brown-out Reset (BOR)
●• Analog Comparator module with:
● - Two analog comparators
● - Programmable on-chip voltage reference (VREF) module
● - Programmable input multiplexing from device inputs and internal voltage reference
● - Comparator outputs are externally accessible
●Special Microcontroller Features:
●• 100,000 erase/write cycle Enhanced Flash program memory typical
●• 1,000,000 erase/write cycle Data EEPROM memory typical
●• Data EEPROM Retention > 40 years
●• Self-reprogrammable under software control
●• In-Circuit Serial Programming™ (ICSP™) via two pins
●• Single-supply 5V In-Circuit Serial Programming
●• Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation
●• Programmable code protection
●• Power saving Sleep mode
●• Selectable oscillator options
●• In-Circuit Debug (ICD) via two pins
●CMOS Technology:
●• Low-power, high-speed Flash/EEPROM technology
●• Fully static design
●• Wide operating voltage range (2.0V to 5.5V)
●• Commercial and Industrial temperature ranges
●• Low-power consumption
