Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller PDIP 40 8-Bit 20 MHz I/O number 36

 2010-2012 Microchip Technology Inc. DS41452C-page 69

PIC16(L)F1516/7/8/9

6.13 Power Control (PCON) Register

The Power Control (PCON) register contains flag bits

to differentiate between a:

• Power-on Reset (PO

• 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

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 —

WDT 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 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 to ‘1’ 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 to ‘1’ 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 to ‘1’ 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)