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ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller SSOP 20 8-Bit 40 MHz I/O number 16
51525354555657585960
Table Of Contents
PIC18F1220/1320
DS39605F-page 50 © 2007 Microchip Technology Inc.
TABLE 5-2: REGISTER FILE SUMMARY (PIC18F1220/1320)
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 36, 42
TOSH Top-of-Stack High Byte (TOS<15:8>) 0000 0000 36, 42
TOSL Top-of-Stack Low Byte (TOS<7:0>) 0000 0000 36, 42
STKPTR STKFUL STKUNF
— Return Stack Pointer 00-0 0000 36, 43
PCLATU
— —bit 21
(3)
Holding Register for PC<20:16> ---0 0000 36, 44
PCLATH Holding Register for PC<15:8> 0000 0000 36, 44
PCL PC Low Byte (PC<7:0>) 0000 0000 36, 44
TBLPTRU
— — bit 21 Program Memory Table Pointer Upper Byte (TBLPTR<20:16>) --00 0000 36, 60
TBLPTRH Program Memory Table Pointer High Byte (TBLPTR<15:8>) 0000 0000 36, 60
TBLPTRL Program Memory Table Pointer Low Byte (TBLPTR<7:0>) 0000 0000 36, 60
TABLAT Program Memory Table Latch 0000 0000 36, 60
PRODH Product Register High Byte xxxx xxxx 36, 71
PRODL Product Register Low Byte xxxx xxxx 36, 71
INTCON GIE/GIEH PEIE/GIEL TMR0IE INT0IE RBIE TMR0IF INT0IF RBIF 0000 000x 36, 75
INTCON2 RBPU
INTEDG0 INTEDG1 INTEDG2 —TMR0IP—RBIP1111 -1-1 36, 76
INTCON3 INT2IP INT1IP
—INT2IEINT1IE— INT2IF INT1IF 11-0 0-00 36, 77
INDF0 Uses contents of FSR0 to address data memory – value of FSR0 not changed (not a physical register) N/A 36, 53
POSTINC0 Uses contents of FSR0 to address data memory – value of FSR0 post-incremented (not a physical register) N/A 36, 53
POSTDEC0 Uses contents of FSR0 to address data memory– value of FSR0 post-decremented (not a physical register) N/A 36, 53
PREINC0 Uses contents of FSR0 to address data memory – value of FSR0 pre-incremented (not a physical register) N/A 36, 53
PLUSW0 Uses contents of FSR0 to address data memory – value of FSR0 offset by W (not a physical register) N/A 36, 53
FSR0H
— — — — Indirect Data Memory Address Pointer 0 High ---- 0000 36, 53
FSR0L Indirect Data Memory Address Pointer 0 Low Byte xxxx xxxx 36, 53
WREG Working Register xxxx xxxx 36
INDF1 Uses contents of FSR1 to address data memory – value of FSR1 not changed (not a physical register) N/A 36, 53
POSTINC1 Uses contents of FSR1 to address data memory – value of FSR1 post-incremented (not a physical register) N/A 36, 53
POSTDEC1 Uses contents of FSR1 to address data memory – value of FSR1 post-decremented (not a physical register) N/A 36, 53
PREINC1 Uses contents of FSR1 to address data memory – value of FSR1 pre-incremented (not a physical register) N/A 36, 53
PLUSW1 Uses contents of FSR1 to address data memory – value of FSR1 offset by W (not a physical register) N/A 36, 53
FSR1H
— — — — Indirect Data Memory Address Pointer 1 High ---- 0000 36, 53
FSR1L Indirect Data Memory Address Pointer 1 Low Byte xxxx xxxx 36, 53
BSR
— — — — Bank Select Register ---- 0000 37, 52
INDF2 Uses contents of FSR2 to address data memory – value of FSR2 not changed (not a physical register) N/A 37, 53
POSTINC2 Uses contents of FSR2 to address data memory – value of FSR2 post-incremented (not a physical register) N/A 37, 53
POSTDEC2 Uses contents of FSR2 to address data memory – value of FSR2 post-decremented (not a physical register) N/A 37, 53
PREINC2 Uses contents of FSR2 to address data memory – value of FSR2 pre-incremented (not a physical register) N/A 37, 53
PLUSW2 Uses contents of FSR2 to address data memory – value of FSR2 offset by W (not a physical register) N/A 37, 53
FSR2H
— — — — Indirect Data Memory Address Pointer 2 High ---- 0000 37, 53
FSR2L Indirect Data Memory Address Pointer 2 Low Byte xxxx xxxx 37, 53
STATUS
— — —NOVZDCC---x xxxx 37, 55
TMR0H Timer0 Register High Byte 0000 0000 37, 101
TMR0L Timer0 Register Low Byte xxxx xxxx 37, 101
T0CON TMR0ON T08BIT T0CS T0SE PSA T0PS2 T0PS1 T0PS0 1111 1111 37, 99
OSCCON IDLEN IRCF2 IRCF1 IRCF0 OSTS IOFS SCS1 SCS0 0000 q000 37, 17
LVDCON
— — IVRST LVDEN LVDL3 LVDL2 LVDL1 LVDL0 --00 0101 37, 167
WDTCON
— — — — — — —SWDTEN--- ---0 37, 180
RCON IPEN
— —RITO PD POR BOR 0--1 11q0 35, 56, 84
Legend: x = unknown, u = unchanged, – = unimplemented, q = value depends on condition
Note 1: RA6 and associated bits are configured as port pins in RCIO, ECIO and INTIO2 (with port function on RA6) Oscillator mode only and read ‘0’
in all other oscillator modes.
2: RA7 and associated bits are configured as port pins in INTIO2 Oscillator mode only and read ‘0’ in all other modes.
3: Bit 21 of the PC is only available in Test mode and Serial Programming modes.
4: The RA5 port bit is only available when MCLRE fuse (CONFIG3H<7>) is programmed to ‘0’. Otherwise, RA5 reads ‘0’. This bit is read-only.