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PIC16F877A Datasheet(PDF) 9 Page - Microchip Technology |
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PIC16F877A Datasheet(HTML) 9 Page - Microchip Technology |
9 / 234 page 2003 Microchip Technology Inc. DS39582B-page 7 PIC16F87XA FIGURE 1-2: PIC16F874A/877A BLOCK DIAGRAM 13 Data Bus 8 14 Program Bus Instruction reg Program Counter 8 Level Stack (13-bit) RAM File Registers Direct Addr 7 RAM Addr(1) 9 Addr MUX Indirect Addr FSR reg Status reg MUX ALU W reg Power-up Timer Oscillator Start-up Timer Power-on Reset Watchdog Timer Instruction Decode & Control Timing Generation OSC1/CLKI OSC2/CLKO MCLR VDD, VSS PORTA PORTB PORTC PORTD PORTE RA4/T0CKI/C1OUT RA5/AN4/SS/C2OUT RC0/T1OSO/T1CKI RC1/T1OSI/CCP2 RC2/CCP1 RC3/SCK/SCL RC4/SDI/SDA RC5/SDO RC6/TX/CK RC7/RX/DT RE0/RD/AN5 RE1/WR/AN6 RE2/CS/AN7 8 8 Brown-out Reset Note 1: Higher order bits are from the Status register. RA3/AN3/VREF+ RA2/AN2/VREF-/CVREF RA1/AN1 RA0/AN0 Parallel 8 3 RB0/INT RB1 RB2 RB3/PGM RB4 RB5 RB6/PGC RB7/PGD In-Circuit Debugger Low-Voltage Programming RD0/PSP0 RD1/PSP1 RD2/PSP2 RD3/PSP3 RD4/PSP4 RD5/PSP5 RD6/PSP6 RD7/PSP7 USART CCP1,2 Synchronous 10-bit A/D Timer0 Timer1 Timer2 Serial Port Data EEPROM Comparator Voltage Reference Device Program Flash Data Memory Data EEPROM PIC16F874A 4K words 192 Bytes 128 Bytes PIC16F877A 8K words 368 Bytes 256 Bytes Flash Program Memory Slave Port |
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