Datasheet

PIC16(L)F1824/1828
DS41419D-page 84  2010-2012 Microchip Technology Inc.
7.11 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
)
• Stack Overflow Reset (STKOVF)
• Stack Underflow Reset (STKUNF)
•MCLR
Reset (RMCLR)
The PCON register bits are shown in Register 7-2.
REGISTER 7-2: PCON: POWER CONTROL REGISTER
R/W/HS-0/q R/W/HS-0/q U-0 U-0 R/W/HC-1/q R/W/HC-1/q R/W/HC-q/u R/W/HC-q/u
STKOVF STKUNF
— —
RMCLR
RI POR BOR
bit 7 bit 0
Legend:
HC = Bit is cleared by hardware HS = Bit is set by hardware
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
u = Bit is unchanged x = Bit is unknown -m/n = Value at POR and BOR/Value at all other Resets
‘1’ = Bit is set ‘0’ = Bit is cleared 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 set to ‘0’ by firmware
bit 6 STKUNF: Stack Underflow Flag bit
1 = A Stack Underflow occurred
0 = A Stack Underflow has not occurred or set to ‘0’ by firmware
bit 5-4 Unimplemented: Read as ‘0’
bit 3 RMCLR
: MCLR Reset Flag bit
1 = A MCLR Reset has not occurred or set to ‘1’ by firmware
0 = A MCLR
Reset has occurred (set to ‘0’ in hardware when a MCLR Reset occurs)
bit 2 RI
: RESET Instruction Flag bit
1 = A RESET instruction has not been executed or set to ‘1’ by firmware
0 = A RESET instruction has been executed (set to ‘0’ in hardware upon executing a RESET instruction)
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)