PIC876 datasheet(27/218 Pages) MICROCHIP

27 / 218 page

 2001 Microchip Technology Inc.

DS30292C-page 25

PIC16F87X

2.2.2.8

PCON Register

The Power Control (PCON) Register contains flag bits

to allow differentiation between a Power-on Reset

(POR), a Brown-out Reset (BOR), a Watchdog Reset

(WDT), and an external MCLR Reset.

PCON REGISTER (ADDRESS 8Eh)

Note:

BOR is unknown on POR. It must be set by

the user and checked on subsequent

RESETS to see if BOR is clear, indicating

a brown-out has occurred. The BOR status

bit is a “don’t care” and is not predictable if

the brown-out circuit is disabled (by clear-

ing the BODEN bit in the configuration

word).

U-0

R/W-0

R/W-1

—

—POR

BOR

bit 7

bit 0

bit 7-2

Unimplemented: Read as '0'

bit 1

POR: Power-on Reset Status bit

= No Power-on Reset occurred

= A Power-on Reset occurred (must be set in software after a Power-on Reset occurs)

bit 0

BOR: Brown-out Reset Status bit

= No Brown-out Reset occurred

= A Brown-out Reset occurred (must be set in software after a Brown-out Reset occurs)

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

- n = Value at POR

’1’ = Bit is set

’0’ = Bit is cleared

x = Bit is unknown

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