
2003 Microchip Technology Inc.
DS40039C-page 9
PIC16F630/676
TABLE 2-1:
PIC16F630/676 SPECIAL REGISTERS SUMMARY BANK 0
Addr
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR,
BOD
Page
Bank 0
00h
INDF
Addressing this location uses contents of FSR to address data memory (not a physical register)
xxxx xxxx
18,61
01h
TMR0
Timer0 Module’s Register
xxxx xxxx
29
02h
PCL
Program Counter's (PC) Least Significant Byte
0000 0000
17
03h
STATUS
IRP
(2)
RP1
(2)
RP0
TO
PD
Z
DC
C
0001 1xxx
11
04h
FSR
Indirect data memory address pointer
—
—
xxxx xxxx
18
05h
PORTA
I/O Control Registers
--xx xxxx
19
06h
—
Unimplemented
—
—
—
07h
PORTC
—
I/O Control Registers
--xx xxxx
26
08h
—
Unimplemented
—
—
09h
—
Unimplemented
—
—
0Ah
PCLATH
—
—
—
Write buffer for upper 5 bits of program counter
---0 0000
17
0Bh
INTCON
GIE
PEIE
T0IE
INTE
RAIE
T0IF
INTF
RAIF
0000 0000
13
0Ch
PIR1
EEIF
ADIF
—
—
CMIF
—
—
TMR1IF
00-- 0--0
15
0Dh
—
Unimplemented
—
—
0Eh
TMR1L
Holding register for the Least Significant Byte of the 16-bit TMR1
xxxx xxxx
32
0Fh
TMR1H
Holding register for the Most Significant Byte of the 16-bit TMR1
xxxx xxxx
32
10h
T1CON
—
T1GE
T1CKPS1
T1CKPS0
T1OSCEN
T1SYNC
TMR1CS
TMR1ON
-000 0000
34
11h
—
Unimplemented
—
—
12h
—
Unimplemented
—
—
13h
—
Unimplemented
—
—
14h
—
Unimplemented
—
—
15h
—
Unimplemented
—
—
16h
—
Unimplemented
—
—
17h
—
Unimplemented
—
—
18h
—
Unimplemented
—
—
19h
CMCON
—
COUT
—
CINV
CIS
CM2
CM1
CM0
-0-0 0000
37
1Ah
—
Unimplemented
—
—
1Bh
—
Unimplemented
—
—
1Ch
—
Unimplemented
—
—
1Dh
—
Unimplemented
—
—
1Eh
ADRESH
(3)
Most Significant 8 bits of the left shifted A/D result or 2 bits of right shifted result
xxxx xxxx
44
1Fh
ADCON0
(3)
ADFM
VCFG
—
CHS2
CHS1
CHS0
GO/DONE
ADON
00-0 0000
45,61
Legend:
Note 1:
— = Unimplemented locations read as ‘0’, u = unchanged, x = unknown, q = value depends on condition shaded = unimplemented
Other (non Power-up) Resets include MCLR Reset, Brown-out Detect and Watchdog Timer Reset during normal operation.
IRP & RP1 bits are reserved, always maintain these bits clear.
PIC16F676 only.
2:
3: