PIC16F627A Datasheet, PDF (21/168 Pages) Microchip Technology – FLASH-Based 8-Bit CMOS Microcontrollers

PIC16F627A/628A/648A
TABLE 4-4: SPECIAL FUNCTION REGISTERS SUMMARY BANK1
Address Name Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on Details
POR
on
Reset⁽¹⁾ Page
Bank 1
80h
INDF
Addressing this location uses contents of FSR to address data memory (not a physical
register)
xxxx xxxx 28
81h
OPTION
RBPU INTEDG T0CS
T0SE
PSA
PS2
PS1
PS0 1111 1111 23
82h
PCL
Program Counter's (PC) Least Significant Byte
0000 0000 28
83h
STATUS
IRP
RP1
RP0
TO
PD
Z
DC
C
0001 1xxx 22
84h
FSR
Indirect data memory address pointer
xxxx xxxx 28
85h
TRISA
TRISA7 TRISA6 TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0 1111 1111 31
86h
TRISB
TRISB7 TRISB6 TRISB5 TRISB4 TRISB3 TRISB2 TRISB1 TRISB0 1111 1111 36
87h
—
Unimplemented
—
—
88h
—
Unimplemented
—
—
89h
—
Unimplemented
—
—
8Ah
PCLATH
—
—
— Write buffer for upper 5 bits of program counter
---0 0000 28
8Bh
INTCON
GIE
PEIE
T0IE
INTE
RBIE
T0IF
INTF
RBIF 0000 000x 24
8Ch
PIE1
EEIE
CMIE
RCIE
TXIE
—
CCP1IE TMR2IE TMR1IE 0000 -000 25
8Dh
—
Unimplemented
—
—
8Eh
8Fh
90h
91h
92h
93h
94h
95h
96h
97h
98h
99h
9Ah
9Bh
9Ch
9Dh
9Eh
9Fh
Legend:
Note 1:
PCON
—
—
—
—
OSCF
—
POR
BOR ---- 1-0x 27
—
Unimplemented
—
—
—
Unimplemented
—
—
—
Unimplemented
—
—
PR2
Timer2 Period Register
1111 1111 52
—
Unimplemented
—
—
—
Unimplemented
—
—
—
Unimplemented
—
—
—
Unimplemented
—
—
—
Unimplemented
—
—
TXSTA
CSRC
TX9
TXEN SYNC
—
BRGH
TRMT
TX9D 0000 -010 71
SPBRG
Baud Rate Generator Register
0000 0000 71
EEDATA EEPROM data register
xxxx xxxx 89
EEADR
EEPROM address register
xxxx xxxx 90
EECON1
—
—
—
—
WRERR WREN
WR
RD ---- x000 90
EECON2 EEPROM control register 2 (not a physical register)
---- ---- 90
—
Unimplemented
—
—
VRCON
VREN
VROE
VRR
—
VR3
VR2
VR1
VR0 000- 0000 67
— = Unimplemented locations read as ‘0’, u = unchanged, x = unknown, q = value depends on condition, shaded =
unimplemented
For the Initialization Condition for Registers Tables, refer to Table 14-6 and Table 14-7.
 2002 Microchip Technology Inc.
Preliminary
DS40044A-page 19