描述 Description

This powerful yet easy-to-program (only 35 single word instructions) CMOS FLASH-based 8-bit microcontroller packs Microchip's powerful PIC? architecture into an 40- or 44-pin package.The PIC16F887 features 256 bytes of EEPROM data memory, self programming, an ICD, 2 Comparators, 14 channels of 10-bit Analog-to-Digital (A/D) converter, 1 capture/compare/PWM and 1 Enhanced capture/compare/PWM functions, a synchronous serial port that can be configured as either 3-wire Serial Peripheral Interface (SPI?) or the 2-wire Inter-Integrated Circuit (I2C?) bus and an Enhanced Universal Asynchronous Receiver Transmitter (EUSART). All of these features make it ideal for more advanced level A/D applications in automotive, industrial, appliances or consumer applications.

特性 Features

? Factory calibrated to ±1%
? Software selectable frequency range of 8 MHz to 32 kHz
? Software tunable
? Two-Speed Start-Up mode
? Fail-safe clock monitoring for critical applications
? Clock mode switching during operation for low-power operation
? Power-Saving Sleep mode
? Power-on Reset (POR)
? Selectable Brown-out Reset (BOR) voltage
? Extended Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation
? In-Circuit Serial Programming? (ICSP?) via two pins
? In-Circuit Debug (ICD) via two pins
? 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
? Programmable code protection
? 1 input only pin
? 36 I/O
? High sink/source current 25 mA
? Interrupt-on-pin change option
? TMR0: 8-bit timer/counter with 8-bit prescaler
? TMR1 enhanced: 16-bit timer/counter with prescaler, External Gate Input mode anddedicated low-power 32 kHz oscillator
? TMR2: 8-bit timer/counter with 8-bit period register, prescaler and postscaler
? Capture/Compare/PWM (CCP) module
? Enhanced Capture/Compare/PWM (ECCP) module with auto-shutdown and PWM steering
? Master Synchronous Serial Port (MSSP) module SPI? mode, I2C? mode with address maskcapability
? Supports RS-485, RS-232 and LIN compatibility
? Auto-Baud Detect
? Auto-wake-up on Start bit
? Ultra Low-Power Wake-up (ULPWU)
? 10-bit 14 channel Analog-to-Digital (A/D) Converter
? Programmable on-chip Voltage Reference (CVREF) module (% of VDD)
? Fixed 0.6 Vref
? Comparator inputs and outputs externally accessible
? SR Latch mode