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PIC16C765/P Datasheet(PDF) 17 Page - Microchip Technology |
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PIC16C765/P Datasheet(HTML) 17 Page - Microchip Technology |
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17 / 158 page  © 1999 Microchip Technology Inc. Advanced Information DS41124A-page 17 PIC16C745/765 4.2.2 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. The Special Function Registers can be classified into two sets (core and peripheral). Those registers associ- ated with the “core” functions are described in this sec- tion, and those related to the operation of the peripheral features are described in the section of that peripheral feature. TABLE 4-1: 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 INDF(3) 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 PCL(3) Program Counter's (PC) Least Significant Byte 0000 0000 0000 0000 03h STATUS(3) IRP(2) RP1(2) RP0 TO PD ZDC C 0001 1xxx 000q quuu 04h FSR(3) Indirect data memory address pointer xxxx xxxx uuuu uuuu 05h PORTA — — PORTA Data Latch when written: PORTA pins when read --0x 0000 --0u 0000 06h PORTB PORTB Data Latch when written: PORTB pins when read xxxx xxxx uuuu uuuu 07h PORTC RC7 RC6 — — — RC2 RC1 RC0 xx-- -xxx uu-- -uuu 08h PORTD(4) PORTD Data Latch when written: PORTD pins when read xxxx xxxx uuuu uuuu 09h PORTE(4) — — — — — RE2 RE1 RE0 ---- -xxx ---- -uuu 0Ah PCLATH(1,3) — — — Write Buffer for the upper 5 bits of the Program Counter ---0 0000 ---0 0000 0Bh INTCON(3) GIE PEIE T0IE INTE RBIE T0IF INTF RBIF 0000 000x 0000 000u 0Ch PIR1 PSPIF(4) ADIF RCIF TXIF USBIF CCP1IF TMR2IF TMR1IF 0000 0000 0000 0000 0Dh PIR2 — — — – — — — CCP2IF ---- ---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 — Unimplemented — — 14h — Unimplemented — — 15h CCPR1L Capture/Compare/PWM Register1 (LSB) xxxx xxxx uuuu uuuu 16h CCPR1H Capture/Compare/PWM Register1 (MSB) xxxx xxxx uuuu uuuu 17h CCP1CON — — DC1B1 DC1B0 CCP1M3 CCP1M2 CCP1M1 CCP1M0 --00 0000 --00 0000 18h RCSTA SPEN RX9 SREN CREN — FERR OERR RX9D 0000 -00x 0000 -00x 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 — — DC2B1 DC2B1 CCP2M3 CCP2M2 CCP2M1 CCP2M0 --00 0000 --00 0000 1Eh ADRES A/D Result Register xxxx xxxx uuuu uuuu 1Fh ADCON0 ADCS1 ADCS0 CHS2 CHS1 CHS0 GO/DONE —ADON 0000 00-0 0000 00-0 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: These registers can be addressed from either bank. 4: The Parallel Slave Port (PORTD and PORTE) is not implemented on the PIC16C745, always maintain these bits clear. |
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