PIC16C72-02E/SO 查看數據表（PDF） - Microchip Technology

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PIC16C72-02E/SO

8-Bit CMOS microcontroller with A,D converter

Microchip Technology 

PIC16C72 Series

2.2.2.6 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.

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

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).

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

bit7

bit 7-2: Unimplemented: Read as '0'

U-0

R/W-0 R/W-q

—

POR

BOR R = Readable bit

bit0 W = Writable bit

U = Unimplemented bit,

read as ‘0’

- n = Value at POR reset

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)

DS39016A-page 14

Preliminary

© 1998 Microchip Technology Inc.

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