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PIC16F87XA Datasheet(PDF) 8 Page - Microchip Technology |
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PIC16F87XA Datasheet(HTML) 8 Page - Microchip Technology |
8 / 234 page PIC16F87XA DS39582B-page 6 2003 Microchip Technology Inc. FIGURE 1-1: PIC16F873A/876A BLOCK DIAGRAM Flash 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 RA4/T0CKI/C1OUT RA5/AN4/SS/C2OUT RB0/INT RC0/T1OSO/T1CKI RC1/T1OSI/CCP2 RC2/CCP1 RC3/SCK/SCL RC4/SDI/SDA RC5/SDO RC6/TX/CK RC7/RX/DT 8 8 Brown-out Reset Note 1: Higher order bits are from the Status register. USART CCP1,2 Synchronous 10-bit A/D Timer0 Timer1 Timer2 Serial Port RA3/AN3/VREF+ RA2/AN2/VREF-/CVREF RA1/AN1 RA0/AN0 8 3 Data EEPROM RB1 RB2 RB3/PGM RB4 RB5 RB6/PGC RB7/PGD In-Circuit Debugger Low-Voltage Programming Comparator Voltage Reference Device Program Flash Data Memory Data EEPROM PIC16F873A 4K words 192 Bytes 128 Bytes PIC16F876A 8K words 368 Bytes 256 Bytes Program Memory |
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