Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller SOIC 20 8-Bit 20 MHz I/O number 18

PIC16F631/677/685/687/689/690

TABLE 2-4: PIC16F631/677/685/687/689/690 SPECIAL FUNCTION REGISTERS SUMMARY BANK 3

Addr Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Value on

POR, BOR

Page

Bank 3

180h INDF Addressing this location uses contents of FSR to address data memory (not a physical register) xxxx xxxx 44,205

181h OPTION_REG RABPU

INTEDG T0CS T0SE PSA PS2 PS1 PS0 1111 1111

37,205

182h PCL Program Counter’s (PC) Least Significant Byte 0000 0000 44,205

183h STATUS IRP RP1 RP0 TO

PD ZDCC0001 1xxx 36,205

184h FSR Indirect Data Memory Address Pointer xxxx xxxx 44,205

185h TRISA

— — TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0 --11 1111 59,205

186h TRISB TRISB7 TRISB6 TRISB5 TRISB4

— — — — 1111 ---- 70,206

187h TRISC TRISC7 TRISC6 TRISC5 TRISC4 TRISC3 TRISC2 TRISC1 TRISC0 1111 1111 76,206

188h — Unimplemented — —

189h — Unimplemented — —

18Ah PCLATH

— — — Write Buffer for the upper 5 bits of the Program Counter ---0 0000 44,205

18Bh INTCON GIE PEIE T0IE INTE RABIE T0IF INTF RABIF

(1)

0000 000x

38,205

18Ch EECON1 EEPGD

(2)

— — — WRERR WREN WR RD x--- x000 121,206

18Dh EECON2 EEPROM Control Register 2 (not a physical register) ---- ---- 119,206

18Eh — Unimplemented — —

18Fh — Unimplemented — —

190h — Unimplemented — —

191h — Unimplemented — —

192h — Unimplemented — —

193h — Unimplemented — —

194h — Unimplemented — —

195h — Unimplemented — —

196h — Unimplemented — —

197h — Unimplemented — —

198h — Unimplemented — —

199h — Unimplemented — —

19Ah — Unimplemented — —

19Bh — Unimplemented — —

19Ch — Unimplemented — —

19Dh PSTRCON

(2)

— — — STRSYNC STRD STRC STRB STRA ---0 0001 146,206

19Eh SRCON SR1 SR0 C1SEN C2REN PULSS PULSR

— — 0000 00-- 103,206

19Fh — Unimplemented — —

Legend: – = Unimplemented locations read as ‘0’, u = unchanged, x = unknown, q = value depends on condition, shaded = unimplemented

Note 1: MCLR

and WDT Reset does not affect the previous value data latch. The RABIF bit will be cleared upon Reset but will set again if the

mismatch exists.

2: PIC16F685/PIC16F690 only.