PIC14000-04 Microchip Technology, PIC14000-04 Datasheet - Page 22

• Manufacturer Part Number: PIC14000-04
• Description: 28-Pin Programmable Mixed Signal Controller
• Manufacturer: Microchip Technology

PIC14000
4.2.2.6
The Power Control (PCON) register status contains
2 flag bits to allow differentiation between a Power-on
Reset, an external MCLR reset, WDT reset, or low-volt-
age condition (Figure 4-8).
FIGURE 4-8:
DS40122B-page 22
bit7
R/W
r
PCON REGISTER
—
U
PCON REGISTER
—
U
—
U
—
U
—
U
Preliminary
POR
R/W
R/W
LVD
These bits are cleared on POR. The user must set
these bits following POR. On a subsequent reset if
POR is cleared, this is an indication that the reset was
due to a power-on reset condition.
Note: LVD is unknown on Power-on Reset. It
bit0
POR:
Unimplemented. Read as ‘0’
1 = A power on reset condition has not occurred.
Unimplemented. Read as ‘0’
Unimplemented. Read as ‘0’
Unimplemented. Read as ‘0’
Unimplemented. Read as ‘0’
1 = A low-voltage detect condition has not occurred.
Reserved. Bit 7 is reserved. This bit should be
0 = A power on reset condition has occurred.
LVD:
0 = A low-voltage detect condition has occurred.
programmed as ‘0’ .
must then be set by the user and checked
on subsequent resets to see if LVD is
cleared, indicating a low voltage condition
has occurred.
Register: PCON
Address:
POR value:
Reset must be due to some other source
(WDT, MCLR).
Software must set this bit after a
power-on-reset condition has occurred.
Software must set this bit after a
power-on-reset condition has occurred.
Power on Reset Flag
Low Voltage Detect Flag
0000_000xb
8Eh
1996 Microchip Technology Inc.
W: Writable
R:
U:
Readable
Unimplemented,
read as ‘0’