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PIC18F4550ESPQTP Datasheet(PDF) 71 Page - Microchip Technology |
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PIC18F4550ESPQTP Datasheet(HTML) 71 Page - Microchip Technology |
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71 / 438 page  © 2009 Microchip Technology Inc. DS39632E-page 69 PIC18F2455/2550/4455/4550 TABLE 5-2: REGISTER FILE SUMMARY File Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on POR, BOR Details on page TOSU — — — Top-of-Stack Upper Byte (TOS<20:16>) ---0 0000 53, 60 TOSH Top-of-Stack High Byte (TOS<15:8>) 0000 0000 53, 60 TOSL Top-of-Stack Low Byte (TOS<7:0>) 0000 0000 53, 60 STKPTR STKFUL STKUNF — SP4 SP3 SP2 SP1 SP0 00-0 0000 53, 61 PCLATU — — — Holding Register for PC<20:16> ---0 0000 53, 60 PCLATH Holding Register for PC<15:8> 0000 0000 53, 60 PCL PC Low Byte (PC<7:0>) 0000 0000 53, 60 TBLPTRU — —bit 21(1) Program Memory Table Pointer Upper Byte (TBLPTR<20:16>) --00 0000 53, 84 TBLPTRH Program Memory Table Pointer High Byte (TBLPTR<15:8>) 0000 0000 53, 84 TBLPTRL Program Memory Table Pointer Low Byte (TBLPTR<7:0>) 0000 0000 53, 84 TABLAT Program Memory Table Latch 0000 0000 53, 84 PRODH Product Register High Byte xxxx xxxx 53, 97 PRODL Product Register Low Byte xxxx xxxx 53, 97 INTCON GIE/GIEH PEIE/GIEL TMR0IE INT0IE RBIE TMR0IF INT0IF RBIF 0000 000x 53, 101 INTCON2 RBPU INTEDG0 INTEDG1 INTEDG2 —TMR0IP —RBIP 1111 -1-1 53, 102 INTCON3 INT2IP INT1IP — INT2IE INT1IE — INT2IF INT1IF 11-0 0-00 53, 103 INDF0 Uses contents of FSR0 to address data memory – value of FSR0 not changed (not a physical register) N/A 53, 75 POSTINC0 Uses contents of FSR0 to address data memory – value of FSR0 post-incremented (not a physical register) N/A 53, 76 POSTDEC0 Uses contents of FSR0 to address data memory – value of FSR0 post-decremented (not a physical register) N/A 53, 76 PREINC0 Uses contents of FSR0 to address data memory – value of FSR0 pre-incremented (not a physical register) N/A 53, 76 PLUSW0 Uses contents of FSR0 to address data memory – value of FSR0 pre-incremented (not a physical register) – value of FSR0 offset by W N/A 53, 76 FSR0H — — — — Indirect Data Memory Address Pointer 0 High Byte ---- 0000 53, 75 FSR0L Indirect Data Memory Address Pointer 0 Low Byte xxxx xxxx 53, 75 WREG Working Register xxxx xxxx 53 INDF1 Uses contents of FSR1 to address data memory – value of FSR1 not changed (not a physical register) N/A 53, 75 POSTINC1 Uses contents of FSR1 to address data memory – value of FSR1 post-incremented (not a physical register) N/A 53, 76 POSTDEC1 Uses contents of FSR1 to address data memory – value of FSR1 post-decremented (not a physical register) N/A 53, 76 PREINC1 Uses contents of FSR1 to address data memory – value of FSR1 pre-incremented (not a physical register) N/A 53, 76 PLUSW1 Uses contents of FSR1 to address data memory – value of FSR1 pre-incremented (not a physical register) – value of FSR1 offset by W N/A 53, 76 FSR1H — — — — Indirect Data Memory Address Pointer 1 High Byte ---- 0000 53, 75 FSR1L Indirect Data Memory Address Pointer 1 Low Byte xxxx xxxx 53, 75 BSR — — — — Bank Select Register ---- 0000 54, 65 INDF2 Uses contents of FSR2 to address data memory – value of FSR2 not changed (not a physical register) N/A 54, 75 POSTINC2 Uses contents of FSR2 to address data memory – value of FSR2 post-incremented (not a physical register) N/A 54, 76 POSTDEC2 Uses contents of FSR2 to address data memory – value of FSR2 post-decremented (not a physical register) N/A 54, 76 PREINC2 Uses contents of FSR2 to address data memory – value of FSR2 pre-incremented (not a physical register) N/A 54, 76 PLUSW2 Uses contents of FSR2 to address data memory – value of FSR2 pre-incremented (not a physical register) – value of FSR2 offset by W N/A 54, 76 FSR2H — — — — Indirect Data Memory Address Pointer 2 High Byte ---- 0000 54, 75 FSR2L Indirect Data Memory Address Pointer 2 Low Byte xxxx xxxx 54, 75 STATUS — — —N OV Z DC C ---x xxxx 54, 73 TMR0H Timer0 Register High Byte 0000 0000 54, 129 TMR0L Timer0 Register Low Byte xxxx xxxx 54, 129 T0CON TMR0ON T08BIT T0CS T0SE PSA T0PS2 T0PS1 T0PS0 1111 1111 54, 127 Legend: x = unknown, u = unchanged, - = unimplemented, q = value depends on condition. Shaded cells are unimplemented, read as ‘0’. Note 1: Bit 21 of the TBLPTRU allows access to the device Configuration bits. 2: The SBOREN bit is only available when BOREN<1:0> = 01; otherwise, the bit reads as ‘0’. 3: These registers and/or bits are not implemented on 28-pin devices and are read as ‘0’. Reset values are shown for 40/44-pin devices; individual unimplemented bits should be interpreted as ‘-’. 4: RA6 is configured as a port pin based on various primary oscillator modes. When the port pin is disabled, all of the associated bits read ‘0’. 5: RE3 is only available as a port pin when the MCLRE Configuration bit is clear; otherwise, the bit reads as ‘0’. 6: RC5 and RC4 are only available as port pins when the USB module is disabled (UCON<3> = 0). 7: I2C™ Slave mode only. |
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