PIC16F946 Datasheet, PDF (26/274 Pages) Microchip Technology – 64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology

PIC16F946
2.2.2.8 PCON Register
The Power Control (PCON) register (See Register 2-8)
contains flag bits to differentiate between a:
• Power-on Reset (POR)
• Brown-out Reset (BOR)
• Watchdog Timer Reset (WDT)
• External MCLR Reset
The PCON register also controls the software enable of
the BOR.
The PCON register bits are shown in Register 2-8.
REGISTER 2-8:
PCON – POWER CONTROL REGISTER (ADDRESS: 8Eh)
U-0
U-0
U-0
R/W-1
U-0
U-0
—
—
—
SBOREN
—
—
bit 7
R/W-0
POR
R/W-x
BOR
bit 0
bit 7-5
bit 4
bit 3-2
bit 1
bit 0
Unimplemented: Read as ‘0’
SBOREN: Software BOR Enable bit⁽¹⁾
1 = BOR enabled
0 = BOR disabled
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)
Note 1: BOREN<1:0> = 01 in the Configuration Word register for this bit to control the BOR.
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
DS41265A-page 24
Preliminary
© 2005 Microchip Technology Inc.