Книга: Introduction to Microprocessors and Microcontrollers

Appendix A: Special function register file

Appendix A: Special function register file

Addr Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Power-on Reset
BANK 0  
00H Uses contents of FSR to address data memory (not a physical register)
01H TMRO 8-bit real-time clock/counter xxxxxxxx
02H PCL Low order 8 bits of the program counter (PC) 00000000
03H Status IRP RP1 RPO TO PD Z DC C 00011xxx
04H FSR Indirect Data Mamory Address Pointer xxxxxxxx
05H PortA RA4/T-CKI RA3 RA2 RA1 RA0 ---x xxxx
06H PortB RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0/INT xxxxxxxx
07H Unused
BANK 1  
81H Option RBPU INTEDG T0CS T0SE PSA PS2 PS1 PS0 11111111
85H TRISA PortA data Direction ---11111
86H TRISB PortB data Direction 11111111
87H Unused
88H EECON 1 EEIF WRERR WREN WR RD ---0x000
89H EECON 2 EEPROM control reg. (not a physical register) -------

The full details (85 pages) of absolutely everything about the PIC16F84A (or any other PIC) can be downloaded from www.microchip.com.

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