PIC16F720-ISLASHML datasheet(28/244 Pages) MICROCHIP

28 / 244 page

PIC16F/LF720/721

DS41430A-page 28

 2010 Microchip Technology Inc.

TABLE 3-1:

STATUS BITS AND THEIR SIGNIFICANCE

POR

BOR

Condition

Power-on Reset or LDO Reset

Illegal, TO is set on POR

Illegal, PD is set on POR

Brown-out Reset

WDT Reset

WDT Wake-up

MCLR Reset during normal operation

MCLR Reset during Sleep or interrupt wake-up from Sleep

TABLE 3-2:

RESET CONDITION FOR SPECIAL REGISTERS(2)

Condition

Program

Counter

STATUS

PCON

Power-on Reset

0000h

0001 1xxx

---- --0x

MCLR Reset during normal operation

0000h

000u uuuu

---- --uu

MCLR Reset during Sleep

0000h

0001 0uuu

---- --uu

WDT Reset

0000h

0000 1uuu

---- --uu

WDT Wake-up

PC + 1

uuu0 0uuu

---- --uu

Brown-out Reset

0000h

0001 1uuu

---- --u0

Interrupt Wake-up from Sleep

PC + 1(1)

uuu1 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 Interrupt 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.

2: If a Status bit is not implemented, that bit will be read as ‘0’.

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