Datasheet

 2001-2013 Microchip Technology Inc. DS39582C-page 29

PIC16F87XA

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.

Note: BOR is unknown on Power-on Reset. 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 dis-

abled (by clearing the BODEN bit in the

configuration word).

U-0 U-0 U-0 U-0 U-0 U-0 R/W-0 R/W-1

— — — — — —PORBOR

bit 7 bit 0

bit 7-2 Unimplemented: Read as ‘0’

bit 1 POR

: Power-on Reset Status bit

1 = No Power-on Reset occurred

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

bit 0 BOR

: Brown-out Reset Status bit

1 = No Brown-out Reset occurred

0 = 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