
PIC16F7X7
DS30498C-page 20
2004 Microchip Technology Inc.
Bank 2
100h(4)
INDF
Addressing this location uses contents of FSR to address data memory (not a physical register) 0000 0000
101h
TMR0
Timer0 Module Register
xxxx xxxx
102h(4)
PCL
Program Counter (PC) Least Significant Byte
0000 0000
103h(4)
STATUS
IRP
RP1
RP0
TO
PD
ZDC
C
0001 1xxx
104h(4)
FSR
Indirect Data Memory Address Pointer
xxxx xxxx
105h
WDTCON
—
WDTPS3
WDTPS2
WDTPS1 WDTPS0 SWDTEN ---0 1000
106h
PORTB
PORTB Data Latch when written: PORTB pins when read
xxxx xxxx
107h
—
Unimplemented
—
108h
—
Unimplemented
—
109h
LVDCON
—
IRVST
LVDEN
LVDL3
LVDL2
LVDL1
LVDL0
--00 0101
10Ah(1,4) PCLATH
—
Write Buffer for the upper 5 bits of the Program Counter
---0 0000
10Bh(4)
INTCON
GIE
PEIE
TMR0IE
INT0IE
RBIE
TMR0IF
INT0IF
RBIF
0000 000x
10Ch
PMDATA
EEPROM Data Register Low Byte
xxxx xxxx
10Dh
PMADR
EEPROM Address Register Low Byte
xxxx xxxx
10Eh
PMDATH
—
EEPROM Data Register High Byte
--xx xxxx
10Fh
PMADRH
—
EEPROM Address Register High Byte
---- xxxx
Bank 3
180h(4)
INDF
Addressing this location uses contents of FSR to address data memory (not a physical register) 0000 0000
181h
OPTION_REG
RBPU
INTEDG
T0CS
T0SE
PSA
PS2
PS1
PS0
1111 1111
182h(4)
PCL
Program Counter (PC) Least Significant Byte
0000 0000
183h(4)
STATUS
IRP
RP1
RP0
TO
PD
ZDC
C
0001 1xxx
184h(4)
FSR
Indirect Data Memory Address Pointer
xxxx xxxx
185h
—
Unimplemented
—
186h
TRISB
PORTB Data Direction Register
1111 1111
187h
—
Unimplemented
—
188h
—
Unimplemented
—
189h
—
Unimplemented
—
18Ah(1,4) PCLATH
—
Write Buffer for the upper 5 bits of the Program Counter
---0 0000
18Bh(4)
INTCON
GIE
PEIE
TMR0IE
INT0IE
RBIE
TMR0IF
INT0IF
RBIF
0000 000x
18Ch
PMCON1
r(6)
—
—RD
1--- ---0
18Dh
—
Reserved, maintain clear
—
18Eh
—
Reserved, maintain clear
—
18Fh
—
Reserved, maintain clear
—
TABLE 2-1:
SPECIAL FUNCTION REGISTER SUMMARY (CONTINUED)
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on:
POR, BOR
Details
on page
Legend:
x
= unknown, u = unchanged, q = value depends on condition, — = unimplemented, read as ‘0’, r = reserved.
Shaded locations are unimplemented, read as ‘0’.
Note 1:
The upper byte of the program counter is not directly accessible. PCLATH is a holding register for the PC<12:8> bits, whose contents
are transferred to the upper byte of the program counter during branches (CALL or GOTO).
2:
Other (non Power-up) Resets include external Reset through MCLR and Watchdog Timer Reset.
3:
Bits PSPIE and PSPIF are reserved on the 28-pin devices; always maintain these bits clear.
4:
These registers can be addressed from any bank.
5:
PORTD, PORTE, TRISD and TRISE are not physically implemented on the 28-pin devices (except for RE3), read as ‘0’.
6:
This bit always reads as a ‘1’.
7:
OSCCON<OSTS> bit resets to ‘0’ with dual-speed start-up and LP, HS or HS-PLL selected as the oscillator.
8:
RE3 is an input only. The state of the TRISE3 bit has no effect and will always read ‘1’.