Datasheet

 1996-2013 Microchip Technology Inc. Preliminary DS40143E-page 37

PIC16C55X

6.4.5 POWER CONTROL/STATUS

Bit1 is POR (Power-on Reset). It is a ‘0’ on Power-on

Reset and unaffected otherwise. The user must write a

‘1’ to this bit following a Power-on Reset. On a subse-

quent RESET if POR

is ‘0’, it will indicate that a Power-

on Reset must have occurred (V

DD may have gone too

low).

TABLE 6-3: TIMEOUT IN VARIOUS SITUATIONS

TABLE 6-4: STATUS BITS AND THEIR SIGNIFICANCE

Oscillator

Configuration

Power-up

Wake-up from

SLEEP

PWRTE = 0 PWRTE = 1

XT, HS, LP 72 ms + 1024 TOSC 1024 TOSC 1024 TOSC

RC 72 ms — —

POR TO PD

011Power-on Reset

00XIllegal, TO

is set on POR

0X0Illegal, PD is set on POR

10uWDT Reset

100WDT Wake-up

1uuMCLR

Reset during normal operation

110MCLR Reset during SLEEP