Datasheet

PIC16F688
DS41203E-page 10 © 2009 Microchip Technology Inc.
TABLE 2-2: PIC16F688 SPECIAL FUNCTION REGISTERS SUMMARY BANK 1
Addr Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Value on
POR/BOR
Page
Bank 1
80h INDF Addressing this location uses contents of FSR to address data memory (not a physical register) xxxx xxxx 20, 117
81h OPTION_REG RAPU
INTEDG T0CS T0SE PSA PS2 PS1 PS0 1111 1111 14, 117
82h PCL Program Counter’s (PC) Least Significant Byte 0000 0000 19, 117
83h STATUS IRP RP1 RP0 TO
PD ZDCC0001 1xxx 13, 117
84h FSR Indirect Data Memory Address Pointer xxxx xxxx 20, 117
85h TRISA
TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0 --11 1111 33, 117
86h Unimplemented
87h TRISC
TRISC5 TRISC4 TRISC3 TRISC2 TRISC1 TRISC0 --11 1111 42, 117
88h Unimplemented
89h Unimplemented
8Ah PCLATH
Write Buffer for upper 5 bits of Program Counter ---0 0000 19, 117
8Bh INTCON GIE PEIE T0IE INTE RAIE T0IF INTF RAIF
(3)
0000 000x 15, 117
8Ch PIE1 EEIE ADIE RCIE C2IE C1IE OSFIE TXIE TMR1IE 0000 0000 16, 117
8Dh Unimplemented
8Eh PCON
ULPWUE SBOREN —PORBOR --01 --qq 18, 117
8Fh OSCCON
IRCF2 IRCF1 IRCF0 OSTS HTS LTS SCS -110 x000 22, 118
90h OSCTUNE
TUN4 TUN3 TUN2 TUN1 TUN0 ---0 0000 26, 118
91h ANSEL ANS7 ANS6 ANS5 ANS4 ANS3 ANS2 ANS1 ANS0 1111 1111 34, 118
92h Unimplemented
93h Unimplemented
94h Unimplemented
95h WPUA
(2)
WPUA5 WPUA4 WPUA2 WPUA1 WPUA0 --11 -111 35, 118
96h IOCA
IOCA5 IOCA4 IOCA3 IOCA2 IOCA1 IOCA0 --00 0000 35, 118
97h EEDATH
EEDATH5 EEDATH4 EEDATH3 EEDATH2 EEDATH1 EEDATH0 --00 0000 78, 118
98h EEADRH
EEADRH3 EEADRH2 EEADRH1 EEADRH0 ---- 0000 78, 118
99h VRCON VREN
—VRR VR3 VR2 VR1 VR0 0-0- 0000 63, 118
9Ah EEDAT EEDAT7 EEDAT6 EEDAT5 EEDAT4 EEDAT3 EEDAT2 EEDAT1 EEDAT0 0000 0000 78, 118
9Bh EEADR EEADR7 EEADR6 EEADR5 EEADR4 EEADR3 EEADR2 EEADR1 EEADR0 0000 0000 78, 118
9Ch EECON1 EEPGD
WRERR WREN WR RD x--- x000 79, 118
9Dh EECON2 EEPROM Control 2 Register (not a physical register) ---- ---- 77, 118
9Eh ADRESL Least Significant 2 bits of the left shifted result or 8 bits of the right shifted result xxxx xxxx 72, 118
9Fh ADCON1
ADCS2 ADCS1 ADCS0 -000 ---- 71, 118
Legend: – = Unimplemented locations read as ‘0, u = unchanged, x = unknown, q = value depends on condition, shaded = unimplemented
Note 1: Other (non Power-up) Resets include MCLR
Reset and Watchdog Timer Reset during normal operation.
2: RA3 pull-up is enabled when pin is configured as MCLR
in the Configuration Word register.
3: MCLR
and WDT Reset does not affect the previous value data latch. The RAIF bit will be cleared upon Reset but will set again if the
mismatched exists.