PIC16C63A Microchip Technology, PIC16C63A Datasheet - Page 22

• Manufacturer Part Number: PIC16C63A
• Description: 28/40-Pin 8-Bit CMOS Microcontrollers
• Manufacturer: Microchip Technology

PIC16C63A/65B/73B/74B
2.2.2.8
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 2-10: PCON REGISTER (ADDRESS 8Eh)
DS30605A-page 22
bit7
bit 7-2: Unimplemented: Read as '0'
bit 1:
bit 0:
U-0
—
PCON REGISTER
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)
U-0
—
U-0
—
U-0
—
U-0
—
U-0
—
R/W-0
POR
Note:
If the BODEN configuration bit is set, BOR
is ’1’ on Power-on Reset. If the BODEN
configuration bit is clear, BOR is unknown
on Power-on Reset.
The BOR status bit is a "don't care" and is
not necessarily predictable if the brown-out
circuit is disabled (the BODEN configura-
tion bit is clear). BOR must then be set by
the user and checked on subsequent
resets to see if it is clear, indicating a
brown-out has occurred.
R/W-q
BOR
bit0
R = Readable bit
W = Writable bit
U = Unimplemented bit,
- n = Value at POR reset
1998 Microchip Technology Inc.
read as ‘0’