PIC16LF1454 Datasheet, PDF (85/418 Pages) Microchip Technology – 14/20-Pin Flash, 8-Bit USB Microcontrollers with XLP Technology

PIC16(L)F1454/5/9
6.13 Power Control (PCON) Register
The Power Control (PCON) register contains flag bits
to differentiate between a:
• Power-on Reset (POR)
• Brown-out Reset (BOR)
• Reset Instruction Reset (RI)
• MCLR Reset (RMCLR)
• Watchdog Timer Reset (RWDT)
• Stack Underflow Reset (STKUNF)
• Stack Overflow Reset (STKOVF)
The PCON register bits are shown in Register 6-2.
6.14 Register Definitions: Power Control
REGISTER 6-2: PCON: POWER CONTROL REGISTER
R/W/HS-0/q R/W/HS-0/q
U-0
R/W/HC-1/q R/W/HC-1/q R/W/HC-1/q R/W/HC-q/u R/W/HC-q/u
STKOVF
STKUNF
—
RWDT
RMCLR
RI
POR
BOR
bit 7
bit 0
Legend:
HC = Bit is cleared by hardware
R = Readable bit
W = Writable bit
u = Bit is unchanged
x = Bit is unknown
‘1’ = Bit is set
‘0’ = Bit is cleared
HS = Bit is set by hardware
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
q = Value depends on condition
bit 7
STKOVF: Stack Overflow Flag bit
1 = A Stack Overflow occurred
0 = A Stack Overflow has not occurred or cleared by firmware
bit 6
STKUNF: Stack Underflow Flag bit
1 = A Stack Underflow occurred
0 = A Stack Underflow has not occurred or cleared by firmware
bit 5
Unimplemented: Read as ‘0’
bit 4
RWDT: Watchdog Timer Reset Flag bit
1 = A Watchdog Timer Reset has not occurred or set by firmware
0 = A Watchdog Timer Reset has occurred (cleared by hardware)
bit 3
RMCLR: MCLR Reset Flag bit
1 = A MCLR Reset has not occurred or set by firmware
0 = A MCLR Reset has occurred (cleared by hardware)
bit 2
RI: RESET Instruction Flag bit
1 = A RESET instruction has not been executed or set by firmware
0 = A RESET instruction has been executed (cleared by hardware)
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 Power-on Reset or Brown-out Reset
occurs)
 2012 Microchip Technology Inc.
Preliminary
DS41639A-page 85