Datasheet

PIC16F684
DS41202F-page 10 © 2007 Microchip Technology Inc.
TABLE 2-2: PIC16F684 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 19, 104
81h OPTION_REG RAPU
INTEDG T0CS T0SE PSA PS2 PS1 PS0 1111 1111 14, 104
82h PCL Program Counter’s (PC) Least Significant Byte 0000 0000 19, 104
83h STATUS IRP
(1)
RP1
(1)
RP0 TO PD ZDCC0001 1xxx 13, 104
84h FSR Indirect Data Memory Address Pointer xxxx xxxx 19, 104
85h TRISA
TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0 --11 1111 31, 104
86h Unimplemented
87h TRISC
TRISC5 TRISC4 TRISC3 TRISC2 TRISC1 TRISC0 --11 1111 40, 104
88h Unimplemented
89h Unimplemented
8Ah PCLATH
Write Buffer for upper 5 bits of Program Counter ---0 0000 19, 104
8Bh INTCON GIE PEIE T0IE INTE RAIE T0IF INTF RAIF 0000 0000 15, 104
8Ch PIE1 EEIE ADIE CCP1IE C2IE C1IE OSFIE TMR2IE TMR1IE 0000 0000 16, 104
8Dh Unimplemented
8Eh PCON
ULPWUE SBOREN —PORBOR --01 --qq 18, 104
8Fh OSCCON
IRCF2 IRCF1 IRCF0 OSTS
(2)
HTS LTS SCS -110 x000 20, 104
90h OSCTUNE
TUN4 TUN3 TUN2 TUN1 TUN0 ---0 0000 24, 105
91h ANSEL ANS7 ANS6 ANS5 ANS4 ANS3 ANS2 ANS1 ANS0 1111 1111 32, 105
92h PR2 Timer2 Module Period Register 1111 1111 53, 105
93h Unimplemented
94h Unimplemented
95h WPUA
(3)
WPUA5 WPUA4 WPUA2 WPUA1 WPUA0 --11 -111 33, 105
96h IOCA
IOCA5 IOCA4 IOCA3 IOCA2 IOCA1 IOCA0 --00 0000 33, 105
97h Unimplemented
98h Unimplemented
99h VRCON VREN
—VRR VR3 VR2 VR1 VR0 0-0- 0000 63, 105
9Ah EEDAT EEDAT7 EEDAT6 EEDAT5 EEDAT4 EEDAT3 EEDAT2 EEDAT1 EEDAT0 0000 0000 75, 105
9Bh EEADR EEADR7 EEADR6 EEADR5 EEADR4 EEADR3 EEADR2 EEADR1 EEADR0 0000 0000 75, 105
9Ch EECON1
WRERR WREN WR RD ---- x000 76, 105
9Dh EECON2 EEPROM Control Register 2 (not a physical register) ---- ---- 76, 105
9Eh ADRESL Least Significant 2 bits of the left shifted result or 8 bits of the right shifted result xxxx xxxx 71, 105
9Fh ADCON1
ADCS2 ADCS1 ADCS0 -000 ---- 70, 105
Legend: – = Unimplemented locations read as ‘0’, u = unchanged, x = unknown, q = value depends on condition, shaded = unimplemented
Note 1: IRP and RP1 bits are reserved, always maintain these bits clear.
2: OSTS bit of the OSCCON register reset to ‘0with Dual Speed Start-up and LP, HS or XT selected as the oscillator.
3: RA3 pull-up is enabled when MCLRE is ‘1’ in the Configuration Word register.