PIC12F635 datasheet(33/234 Pages) MICROCHIP

33 / 234 page

DS41232D-page 31

PIC12F635/PIC16F636/639

2.2.2.6

PCON Register

The Power Control (PCON) register (see Table 12-3)

contains flag bits to differentiate between a:

• Power-on Reset (POR)

• Wake-up Reset (WUR)

• Brown-out Reset (BOR)

• Watchdog Timer Reset (WDT)

• External MCLR Reset

The PCON register also controls the Ultra Low-Power

Wake-up and software enable of the BOR.

The PCON register bits are shown in Register 2-6.

PCON: POWER CONTROL REGISTER

U-0

R/W-0

R/W-1

R/W-x

U-0

R/W-0

R/W-x

—

ULPWUE

SBOREN(1)

WUR

—POR

BOR

bit 7

bit 0

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

bit 7-6

Unimplemented: Read as ‘0’

bit 5

ULPWUE: Ultra Low-Power Wake-up Enable bit

= Ultra low-power wake-up enabled

= Ultra low-power wake-up disabled

bit 4

SBOREN: Software BOR Enable bit(1)

= BOR enabled

= BOR disabled

bit 3

WUR: Wake-up Reset Status bit

= No Wake-up Reset occurred

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

bit 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)

Note 1:

BOREN<1:0> = 01 in the Configuration Word register for this bit to control the BOR.

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