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PIC16LC774-04/SS 数据表(PDF) 13 Page - Microchip Technology |
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PIC16LC774-04/SS 数据表(HTML) 13 Page - Microchip Technology |
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13 / 200 page ![]() PIC16C77X © 1999 Microchip Technology Inc. Advance Information DS30275A-page 13 2.2.2 SPECIAL FUNCTION REGISTERS The Special Function Registers are registers used by the CPU and Peripheral Modules for controlling the desired operation of the device. These registers are implemented as static RAM. A list of these registers is given in Table 2-1. The special function registers can be classified into two sets; core (CPU) and peripheral. Those registers asso- ciated with the core functions are described in detail in this section. Those related to the operation of the peripheral features are described in detail in that peripheral feature section. TABLE 2-1 PIC16C77X SPECIAL FUNCTION REGISTER SUMMARY Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on: POR, BOR Value on all other resets (2) Bank 0 00h(4) INDF Addressing this location uses contents of FSR to address data memory (not a physical register) 0000 0000 0000 0000 01h TMR0 Timer0 module’s register xxxx xxxx uuuu uuuu 02h(4) PCL Program Counter's (PC) Least Significant Byte 0000 0000 0000 0000 03h(4) STATUS IRP RP1 RP0 TO PD ZDC C 0001 1xxx 000q quuu 04h(4) FSR Indirect data memory address pointer xxxx xxxx uuuu uuuu 05h PORTA — —PORTA5(5) PORTA Data Latch when written: PORTA<4:0> pins when read --0x 0000 --0u 0000 06h PORTB PORTB Data Latch when written: PORTB pins when read xxxx 11xx uuuu 11uu 07h PORTC PORTC Data Latch when written: PORTC pins when read xxxx xxxx uuuu uuuu 08h(5) PORTD PORTD Data Latch when written: PORTD pins when read xxxx xxxx uuuu uuuu 09h(5) PORTE — — — — — RE2 RE1 RE0 ---- -000 ---- -000 0Ah(1,4) PCLATH — — — Write Buffer for the upper 5 bits of the Program Counter ---0 0000 ---0 0000 0Bh(4) INTCON GIE PEIE T0IE INTE RBIE T0IF INTF RBIF 0000 000x 0000 000u 0Ch PIR1 PSPIF(3) ADIF RCIF TXIF SSPIF CCP1IF TMR2IF TMR1IF 0000 0000 0000 0000 0Dh PIR2 LVDIF — — –BCLIF — — CCP2IF 0--- 0--0 0--- 0--0 0Eh TMR1L Holding register for the Least Significant Byte of the 16-bit TMR1 register xxxx xxxx uuuu uuuu 0Fh TMR1H Holding register for the Most Significant Byte of the 16-bit TMR1 register xxxx xxxx uuuu uuuu 10h T1CON — — T1CKPS1 T1CKPS0 T1OSCEN T1SYNC TMR1CS TMR1ON --00 0000 --uu uuuu 11h TMR2 Timer2 module’s register 0000 0000 0000 0000 12h T2CON — TOUTPS3 TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON T2CKPS1 T2CKPS0 -000 0000 -000 0000 13h SSPBUF Synchronous Serial Port Receive Buffer/Transmit Register xxxx xxxx uuuu uuuu 14h SSPCON WCOL SSPOV SSPEN CKP SSPM3 SSPM2 SSPM1 SSPM0 0000 0000 0000 0000 15h CCPR1L Capture/Compare/PWM Register1 (LSB) xxxx xxxx uuuu uuuu 16h CCPR1H Capture/Compare/PWM Register1 (MSB) xxxx xxxx uuuu uuuu 17h CCP1CON — — CCP1X CCP1Y CCP1M3 CCP1M2 CCP1M1 CCP1M0 --00 0000 --00 0000 18h RCSTA SPEN RX9 SREN CREN ADDEN FERR OERR RX9D 0000 000x 0000 000x 19h TXREG USART Transmit Data Register 0000 0000 0000 0000 1Ah RCREG USART Receive Data Register 0000 0000 0000 0000 1Bh CCPR2L Capture/Compare/PWM Register2 (LSB) xxxx xxxx uuuu uuuu 1Ch CCPR2H Capture/Compare/PWM Register2 (MSB) xxxx xxxx uuuu uuuu 1Dh CCP2CON — — CCP2X CCP2Y CCP2M3 CCP2M2 CCP2M1 CCP2M0 --00 0000 --00 0000 1Eh ADRESH A/D High Byte Result Register xxxx xxxx uuuu uuuu 1Fh ADCON0 ADCS1 ADCS0 CHS2 CHS1 CHS0 GO/DONE CHS3 ADON 0000 0000 0000 0000 Legend: x = unknown, u = unchanged, q = value depends on condition, - = unimplemented read as '0'. 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: Other (non power-up) resets include external reset through MCLR and Watchdog Timer Reset. 3: Bits PSPIE and PSPIF are reserved on the 28-pin devices, always maintain these bits clear. 4: These registers can be addressed from any bank. 5: These registers/bits are not implemented on the 28-pin devices read as '0'. |
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