PIC16F870-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F870-I/SO

28/40-Pin, 8-Bit CMOS FLASH Microcontrollers

Microchip Technology 

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 Watch-dog Reset

(WDT) and an external MCLR Reset.

PIC16F870/871

Note:

BOR is unknown on POR. It must be set by

the user and checked on subsequent rests

to see if BOR is clear, indicating a brown-

out has occurred. The BOR status bit is a

don’t care and is not predictable if the

brown-out circuit is disabled (by clearing

the BODEN bit in the configuration word).

REGISTER 2-8: PCON REGISTER (ADDRESS 8Eh)

U-0

U-0

U-0

U-0

U-0

U-0 R/W-0 R/W-1

—

—

—

—

—

bit7

—

POR BOR R = Readable bit

bit0

W = Writable bit

U = Unimplemented bit,

read as ‘0’

- n= Value at POR reset

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: 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)

© 1999 Microchip Technology Inc.

Preliminary

DS30569A-page 23

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