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PIC16F874A / 877A

40-Pin Enhanced FLASH Microcontroller Product Brief

PIC16F874A / 877A
40-Pin Enhanced FLASH Microcontroller Product Brief
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 40-pin PIC16CXXX and PIC16FXXX microcontrollers
Pin Diagram:
MCLR / VPP RA0 / AN0 RA1 / AN1 RA2 / AN2 / VREF- / CVREF RA3 / AN3 / VREF+ RA4 / T0CKI RA5 / AN4 / SS RE0 / RD / AN5 RE1 / WR / AN6 RE2 / CS / AN7 VDD VSS OSC1 / CLKIN OSC2 / CLKOUT RC0 / T1OSO / T1CKI RC1 / T1OSI / CCP2 RC2 / CCP1 RC3 / SCK / SCL RD0 / PSP0 RD1 / PSP1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 RB7 / PGD RB6 / PGC RB5 RB4 RB3 / PGM RB2 RB1 RB0 / INT VDD VSS RD7 / PSP7 RD6 / PSP6 RD5 / PSP5 RD4 / PSP4 RC7 / RX / DT RC6 / TX / CK RC5 / SDO RC4 / SDI / SDA RD3 / PSP3 RD2 / PSP2
Peripheral Features:
· Timer0 module: 8-bit timer / counter with 8-bit prescaler · Timer1 module: 16-bit timer / counter with prescaler, can be incremented during SLEEP via external crystal / clock · Timer2 module: 8-bit timer / counter with 8-bit period register, prescaler and postscaler · Two Capture, Compare, PWM modules · Master Synchronous Serial Port (MSSP) module. Two modes of operation: - 3-wire SPI (supports all 4 SPI modes) - I2C Master and Slave mode · Addressable USART module: - Supports interrupt on Address bit · Parallel Slave Port (PSP) module 8-bits wide, external RD, WR and CS controls · High Sink / Source Current: 25 mA
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
Special Microcontroller Features:
Analog Features:
· 10-bit 8-ch 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
Device
MSSP Data EEPROM 10-bit CCP Timers SRAM I / O USART Comparators # Single Word (Bytes) A / D (ch) (PWM) SPI Master 8 / 16-bit Bytes 2 (Bytes) Instructions I C 4096 8192 192 368 128 256 33 33 8 8 2 2 Yes Yes Yes Yes Yes Yes 2 / 1 2 / 1 2 2
Program Memory
PIC16F874A 7.2K PIC16F877A 14.3K
2001 Microchip Technology Inc.
Advance Information
PIC16F874A / 877A
DS30304C-page 1
PIC16F874A / 877A
Pin Diagrams:
RC1 / T1OSI / CCP2 RC2 / CCP1 RC3 / SCK / SCL RD0 / PSP0 RD1 / PSP1 RD2 / PSP2 RD3 / PSP3 RC4 / SDI / SDA RC5 / SDO RC6 / TX / CK NC
RA4 / T0CKI RA5 / AN4 / SS RE0 / RD / AN5 RE1 / WR / AN6 RE2 / CS / AN7 VDD VSS OSC1 / CLKIN OSC2 / CLKOUT RC0 / T1OSO / T1CK1 NC
RA3 / AN3 / VREF+ RA2 / AN2 / VREF- / CVREF RA1 / AN1 RA0 / AN0 MCLR / VPP NC RB7 / PGD RB6 / PGC RB5 RB4 NC 39 38 37 36 35 34 33 32 31 30 9
PIC16F877A PIC16F874A
RB3 / PGM RB2 RB1 RB0 / INT VDD VSS RD7 / PSP7 RD6 / PSP6 RD5 / PSP5 RD4 / PSP4 RC7 / RX / DT
RC6 / TX / CK RC5 / SDO RC4 / SDI / SDA RD3 / PSP3 RD2 / PSP2 RD1 / PSP1 RD0 / PSP0 RC3 / SCK / SCL RC2 / CCP1 RC1 / T1OSI / CCP2 NC
DS30304C-page 2
Advance Information
NC NC RB4 RB5 RB6 / PGC RB7 / PGD MCLR / VPP RA0 / AN0 RA1 / AN1 RA2 / AN2 / VREF- / CVREF RA3 / AN3 / VREF+
RC7 / RX / DT RD4 / PSP4 RD5 / PSP5 RD6 / PSP6 RD7 / PSP7 VSS VDD RB0 / INT RB1 RB2 RB3 / PGM
PIC16F877A PIC16F874A
NC RC0 / T1OSO / T1CKI OSC2 / CLKOUT OSC1 / CLKIN VSS VDD RE2 / AN7 / CS RE1 / AN6 / WR RE0 / AN5 / RD RA5 / AN4 / SS RA4 / T0CKI
2001 Microchip Technology Inc.
Note the following details of the code protection feature on PICmicro® MCUs. · · · The PICmicro family meets the specifications contained in the Microchip Data Sheet. Microchip believes that its family of PICmicro microcontrollers is one of the most secure products of its kind on the market today, when used in the intended manner and under normal conditions. There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the PICmicro microcontroller in a manner outside the operating specifications contained in the data sheet. The person doing so may be engaged in theft of intellectual property. Microchip is willing to work with the customer who is concerned about the integrity of their code. Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable". Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our product.
If you have any further questions about this matter, please contact the local sales office nearest to you.
Printed on recycled paper.
2001 Microchip Technology Inc.
Advance Information
DS30304C - page 3
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DS30304C-page 4
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2001 Microchip Technology Inc.