PIC16C72-04SLASHSS datasheet(39/288 Pages) MICROCHIP

39 / 288 page

DS30390E-page 39

PIC16C7X

4.2.2.8

PCON REGISTER

The Power Control (PCON) register contains a ﬂag bit

to allow differentiation between a Power-on Reset

(POR) to an external MCLR Reset or WDT Reset.

Those devices with brown-out detection circuitry con-

tain an additional bit to differentiate a Brown-out Reset

condition from a Power-on Reset condition.

Applicable Devices

72 73 73A 74 74A 76 77

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 BODEN

bit in the Conﬁguration word).

FIGURE 4-16: PCON REGISTER (ADDRESS 8Eh)

U-0

R/W-0

R/W-q

—

POR

BOR(1)

= Readable bit

W = Writable bit

= Unimplemented bit,

read as ‘0’

- n = Value at POR reset

bit7

bit0

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(1): 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)

Note 1: Brown-out Reset is not implemented on the PIC16C73/74.

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