PIC16F628A-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F628A-I/SO

Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

Microchip Technology 

PIC16F627A/628A/648A

4.2.2.6 PCON Register

The PCON register contains flag bits to differentiate

between a Power-on Reset, an external MCLR Reset,

WDT Reset or a Brown-out Reset.

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

cleared, 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).

REGISTER 4-6:

PCON – POWER CONTROL REGISTER (ADDRESS: 8Eh)

U-0

U-0

U-0

U-0

R/W-1

U-0

—

—

—

—

OSCF

—

bit 7

R/W-0

POR

R/W-x

BOR

bit 0

bit 7-4

bit 3

bit 2

bit 1

bit 0

Unimplemented: Read as ‘0’

OSCF: INTOSC Oscillator Frequency bit

1 = 4 MHz typical

0 = 48 kHz typical

Unimplemented: Read as ‘0’

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)

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

-n = Value at POR

W = Writable bit

‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’

‘0’ = Bit is cleared x = Bit is unknown

© 2007 Microchip Technology Inc.

DS40044F-page 27

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