Datasheet

PIC16F7X7

DS30498C-page 28  2004 Microchip Technology Inc.

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 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 not predictable if the brown-out circuit

is disabled (by clearing the BOREN bit in

the Configuration Word register).

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

— — — — — SBOREN POR BOR

bit 7 bit 0

bit 7-3 Unimplemented: Read as ‘0’

bit 2 SBOREN: Software Brown-out Reset Enable bit

If BORSEN in Configuration Word 2 is a ‘

1’ and BOREN in Configuration Word 1 is ‘0’:

1 = BOR enabled

0 = BOR disabled

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