PIC16F627A_05 Datasheet, PDF (105/180 Pages) Microchip Technology – Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F627A/628A/648A
TABLE 14-5: SUMMARY OF REGISTERS ASSOCIATED WITH BROWN-OUT RESET
Address Name Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR Reset
Value on all
other
Resets⁽¹⁾
03h, 83h, STATUS IRP
RP1
RPO
TO
PD
Z
DC
C
0001 1xxx 000q quuu
103h, 183h
8Eh
PCON
—
—
—
—
OSCF
—
POR
BOR ---- 1-0x ---- u-uq
Legend:
Note 1:
x = unknown, u = unchanged, - = unimplemented read as ‘0’, q = value depends upon condition.
Shaded cells are not used by Brown-out Reset.
Other (non Power-up) Resets include MCLR Reset, Brown-out Reset and Watchdog Timer Reset during normal operation.
TABLE 14-6: INITIALIZATION CONDITION FOR SPECIAL REGISTERS
Condition
Program
Counter
Status
Register
PCON
Register
Power-on Reset
000h
0001 1xxx
---- 1-0x
MCLR Reset during normal operation
000h
000u uuuu
---- 1-uu
MCLR Reset during Sleep
000h
0001 0uuu
---- 1-uu
WDT Reset
000h
0000 uuuu
---- 1-uu
WDT Wake-up
PC + 1
uuu0 0uuu
---- u-uu
Brown-out Reset
000h
000x xuuu
---- 1-u0
Interrupt Wake-up from Sleep
PC + 1⁽¹⁾
uuu1 0uuu
---- u-uu
Legend: u = unchanged, x = unknown, - = unimplemented bit, reads as ‘0’.
Note 1: When the wake-up is due to an interrupt and global enable bit, GIE is set, the PC is loaded with the interrupt vector
(0004h) after execution of PC + 1.
© 2005 Microchip Technology Inc.
DS40044D-page 103