Datasheet

PIC10(L)F320/322

DS41585A-page 38 Preliminary  2011 Microchip Technology Inc.

5.9 Determining the Cause of a Reset

Upon any Reset, multiple bits in the STATUS and

PCON register are updated to indicate the cause of the

Reset. Ta bl e 5 -3 and Tab le 5 -4 show the Reset condi-

tions of these registers.

TABLE 5-3: RESET STATUS BITS AND THEIR SIGNIFICANCE

TABLE 5-4: RESET CONDITION FOR SPECIAL REGISTERS

POR BOR TO PD Condition

0x11Power-on Reset

u011Brown-out Reset

uu0uWDT Reset

uu00WDT Wake-up from Sleep

uuuuMCLR

Reset during normal operation

uu10MCLR

Reset during Sleep

Condition

Program

Counter

STATUS

PCON

Power-on Reset 0000h 0001 1000 ---- --0x

MCLR

Reset during normal operation 0000h 000u uuuu ---- --uu

MCLR Reset during Sleep 0000h 0001 0uuu ---- --uu

WDT Reset 0000h 0000 uuuu ---- --uu

WDT Wake-up from Sleep PC + 1 0000 0uuu ---- --uu

Brown-out Reset 0000h 0001 1uuu ---- --u0

Interrupt Wake-up from Sleep PC + 1

(1)

0001 0uuu

---- --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 return address is pushed on

the stack and PC is loaded with the interrupt vector (0004h) after execution of PC + 1.