Datasheet
1996 Microchip Technology Inc. DS30430B-page 43
PIC16F8X
TABLE 8-3: RESET CONDITION FOR PROGRAM COUNTER AND THE STATUS REGISTER
Condition
Program Counter STATUS Register
Power-on Reset 000h
0001 1xxx
MCLR
Reset during normal operation 000h
000u uuuu
MCLR
Reset during SLEEP 000h
0001 0uuu
WDT Reset (during normal operation) 000h
0000 1uuu
WDT Wake-up PC + 1
uuu0 0uuu
Interrupt wake-up from SLEEP PC + 1
(1)
uuu1 0uuu
Legend:
u
= unchanged,
x
= unknown.
Note 1: When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector
(0004h).
TABLE 8-4: RESET CONDITIONS FOR ALL REGISTERS
Register Address Power-on Reset
MCLR
Reset during:
– normal operation
– SLEEP
WDT Reset during nor-
mal operation
Wake-up from SLEEP:
– through interrupt
– through WDT Time-out
W—
xxxx xxxx uuuu uuuu uuuu uuuu
INDF 00h
---- ---- ---- ---- ---- ----
TMR0 01h
xxxx xxxx uuuu uuuu uuuu uuuu
PCL 02h
0000h 0000h PC + 1
(2)
STATUS 03h
0001 1xxx 000q quuu
(3)
uuuq quuu
(3)
FSR 04h xxxx xxxx uuuu uuuu uuuu uuuu
PORTA 05h ---x xxxx ---u uuuu ---u uuuu
PORTB 06h xxxx xxxx uuuu uuuu uuuu uuuu
EEDATA 08h xxxx xxxx uuuu uuuu uuuu uuuu
EEADR 09h xxxx xxxx uuuu uuuu uuuu uuuu
PCLATH 0Ah ---0 0000 ---0 0000 ---u uuuu
INTCON 0Bh 0000 000x 0000 000u uuuu uuuu
(1)
INDF 80h ---- ---- ---- ---- ---- ----
OPTION 81h 1111 1111 1111 1111 uuuu uuuu
PCL 82h 0000h 0000h PC + 1
STATUS 83h 0001 1xxx 000q quuu
(3)
uuuq quuu
(3)
FSR 84h xxxx xxxx uuuu uuuu uuuu uuuu
TRISA 85h ---1 1111 ---1 1111 ---u uuuu
TRISB 86h 1111 1111 1111 1111 uuuu uuuu
EECON1 88h ---0 x000 ---0 q000 ---0 uuuu
EECON2 89h ---- ---- ---- ---- ---- ----
PCLATH 8Ah ---0 0000 ---0 0000 ---u uuuu
INTCON 8Bh 0000 000x 0000 000u uuuu uuuu
(1)
Legend: u = unchanged, x = unknown, - = unimplemented bit read as '0',
q = value depends on condition.
Note 1: One or more bits in INTCON will be affected (to cause wake-up).
2: When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector
(0004h).
3: Table 8-3 lists the reset value for each specific condition.