Datasheet

 2001-2013 Microchip Technology Inc. DS35007C-page 25
PIC16F84A
TABLE 6-4: RESET CONDITIONS FOR ALL REGISTERS
Register Address Power-on Reset
MCLR
during:
– normal operation
– SLEEP
WDT Reset during
normal 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 0000 0000 0000 0000 PC + 1
(2)
STATUS 03h 0001 1xxx 000q quuu
(3)
uuuq quuu
(3)
FSR 04h xxxx xxxx uuuu uuuu uuuu uuuu
PORTA
(4)
05h ---x xxxx ---u uuuu ---u uuuu
PORTB
(5)
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_REG 81h 1111 1111 1111 1111 uuuu uuuu
PCL 82h 0000 0000 0000 0000 PC + 1
(2)
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 6-3 lists the RESET value for each specific condition.
4: On any device RESET, these pins are configured as inputs.
5: This is the value that will be in the port output latch.