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数据搜索系统，热门电子元器件搜索 |
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PIC16F877AI/ML 数据表(PDF) 23 Page - Microchip Technology |
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PIC16F877AI/ML 数据表(HTML) 23 Page - Microchip Technology |
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23 / 234 page  2003 Microchip Technology Inc. DS39582B-page 21 PIC16F87XA Bank 2 100h(3) INDF Addressing this location uses contents of FSR to address data memory (not a physical register) 0000 0000 31, 150 101h TMR0 Timer0 Module Register xxxx xxxx 55, 150 102h(3) PCL Program Counter’s (PC) Least Significant Byte 0000 0000 30, 150 103h(3) STATUS IRP RP1 RP0 TO PD ZDC C 0001 1xxx 22, 150 104h(3) FSR Indirect Data Memory Address Pointer xxxx xxxx 31, 150 105h — Unimplemented — — 106h PORTB PORTB Data Latch when written: PORTB pins when read xxxx xxxx 45, 150 107h — Unimplemented — — 108h — Unimplemented — — 109h — Unimplemented — — 10Ah(1,3) PCLATH — — — Write Buffer for the upper 5 bits of the Program Counter ---0 0000 30, 150 10Bh(3) INTCON GIE PEIE TMR0IE INTE RBIE TMR0IF INTF RBIF 0000 000x 24, 150 10Ch EEDATA EEPROM Data Register Low Byte xxxx xxxx 39, 151 10Dh EEADR EEPROM Address Register Low Byte xxxx xxxx 39, 151 10Eh EEDATH — — EEPROM Data Register High Byte --xx xxxx 39, 151 10Fh EEADRH — — — —(5) EEPROM Address Register High Byte ---- xxxx 39, 151 Bank 3 180h(3) INDF Addressing this location uses contents of FSR to address data memory (not a physical register) 0000 0000 31, 150 181h OPTION_REG RBPU INTEDG T0CS T0SE PSA PS2 PS1 PS0 1111 1111 23, 150 182h(3) PCL Program Counter (PC) Least Significant Byte 0000 0000 30, 150 183h(3) STATUS IRP RP1 RP0 TO PD ZDC C 0001 1xxx 22, 150 184h(3) FSR Indirect Data Memory Address Pointer xxxx xxxx 31, 150 185h — Unimplemented — — 186h TRISB PORTB Data Direction Register 1111 1111 45, 150 187h — Unimplemented — — 188h — Unimplemented — — 189h — Unimplemented — — 18Ah(1,3) PCLATH — — — Write Buffer for the upper 5 bits of the Program Counter ---0 0000 30, 150 18Bh(3) INTCON GIE PEIE TMR0IE INTE RBIE TMR0IF INTF RBIF 0000 000x 24, 150 18Ch EECON1 EEPGD — — — WRERR WREN WR RD x--- x000 34, 151 18Dh EECON2 EEPROM Control Register 2 (not a physical register) ---- ---- 39, 151 18Eh — Reserved; maintain clear 0000 0000 — 18Fh — Reserved; maintain clear 0000 0000 — TABLE 2-1: SPECIAL FUNCTION REGISTER SUMMARY (CONTINUED) Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on: POR, BOR Details on page: Legend: x = unknown, u = unchanged, q = value depends on condition, - = unimplemented, read as ‘0’, r = reserved. Shaded locations are unimplemented, read as ‘0’. Note 1: The upper byte of the program counter is not directly accessible. PCLATH is a holding register for the PC<12:8>, whose contents are transferred to the upper byte of the program counter. 2: Bits PSPIE and PSPIF are reserved on PIC16F873A/876A devices; always maintain these bits clear. 3: These registers can be addressed from any bank. 4: PORTD, PORTE, TRISD and TRISE are not implemented on PIC16F873A/876A devices, read as ‘0’. 5: Bit 4 of EEADRH implemented only on the PIC16F876A/877A devices. |
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