PIC16F72SLASHML datasheet(19/136 Pages) MICROCHIP

19 / 136 page

 2002 Microchip Technology Inc.

DS39597B-page 17

PIC16F72

2.2.2.6

PCON Register

The Power Control (PCON) register contains a flag bit

to allow differentiation between a Power-on Reset

(POR), a Brown-out Reset, an external MCLR Reset

and WDT Reset.

PCON: POWER CONTROL REGISTER (ADDRESS 8Eh)

Note:

Interrupt flag bits get set when an interrupt

condition occurs, regardless of the state of

its corresponding enable bit or the global

enable bit, GIE (INTCON<7>). User soft-

ware should ensure the appropriate inter-

rupt flag bits are clear prior to enabling an

interrupt.

Note:

BOR is unknown on Power-on Reset. It

must then 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 necessarily predictable if the brown-out

circuit is disabled (by clearing the BOREN

bit in the Configuration word).

U-0

R/W-0

R/W-x

—

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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