PIC16F7X7 datasheet(30/276 Pages) MICROCHIP

30 / 276 page

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.

PCON: POWER CONTROL/STATUS 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 not predictable if the brown-out circuit

is disabled (by clearing the BOREN bit in

the Configuration Word register).

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’:

= BOR enabled

= BOR disabled

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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