PIC16F627A_05 Datasheet, PDF (21/180 Pages) Microchip Technology – Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

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
POR
Reset⁽¹⁾
Details
on Page
Bank 1
80h
81h
82h
83h
84h
85h
86h
87h
88h
89h
8Ah
8Bh
8Ch
8Dh
8Eh
8Fh
90h
91h
92h
93h
94h
95h
96h
97h
98h
99h
9Ah
9Bh
9Ch
9Dh
9Eh
9Fh
Legend:
Note 1:
INDF
Addressing this location uses contents of FSR to address data memory (not a physical
register)
xxxx xxxx 28
OPTION
RBPU INTEDG T0CS
T0SE
PSA
PS2
PS1
PS0 1111 1111 23
PCL
Program Counter’s (PC) Least Significant Byte
0000 0000 28
STATUS
IRP
RP1
RP0
TO
PD
Z
DC
C
0001 1xxx 22
FSR
Indirect Data Memory Address Pointer
xxxx xxxx 28
TRISA
TRISA7 TRISA6 TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0 1111 1111 31
TRISB
TRISB7 TRISB6 TRISB5 TRISB4 TRISB3 TRISB2 TRISB1 TRISB0 1111 1111 36
—
Unimplemented
—
—
—
Unimplemented
—
Unimplemented
—
—
—
—
PCLATH
INTCON
PIE1
—
—
—
GIE
PEIE
EEIE
CMIE
Unimplemented
— Write Buffer for upper 5 bits of Program Counter
---0 0000 28
T0IE
INTE
RBIE
T0IF
INTF
RBIF 0000 000x 24
RCIE
TXIE
—
CCP1IE TMR2IE TMR1IE 0000 -000 25
—
—
PCON
—
—
—
PR2
—
—
—
—
—
Unimplemented
Unimplemented
Unimplemented
Timer2 Period Register
Unimplemented
Unimplemented
—
OSCF
—
POR
BOR ---- 1-0x 27
—
—
—
—
—
—
1111 1111 52
—
—
—
—
—
Unimplemented
—
Unimplemented
—
—
—
—
—
TXSTA
SPBRG
EEDATA
EEADR
EECON1
EECON2
—
Unimplemented
CSRC
TX9
TXEN SYNC
—
Baud Rate Generator Register
EEPROM Data Register
EEPROM Address Register
—
—
—
—
WRERR
EEPROM Control Register 2 (not a physical register)
Unimplemented
BRGH
WREN
TRMT
WR
—
—
TX9D 0000 -010 71
0000 0000 73
xxxx xxxx 89
xxxx xxxx 90
RD ---- x000 90
---- ---- 90
—
—
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.
© 2005 Microchip Technology Inc.
DS40044D-page 19