PIC18F67J11 datasheet(56/466 Pages) MICROCHIP

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PIC18F87J11 FAMILY

DS39778E-page 56

 2007-2012 Microchip Technology Inc.

RCON: RESET CONTROL REGISTER

R/W-0

U-0

R/W-1

R-1

R/W-0

IPEN

—CM

POR

BOR

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7

IPEN:

Interrupt Priority Enable bit

= Enables priority levels on interrupts

= Disables priority levels on interrupts (PIC16CXXX Compatibility mode)

bit 6

Unimplemented:

Read as ‘0’

bit 5

CM:

Configuration Mismatch Flag bit

= A Configuration Mismatch Reset has not occurred

= A Configuration Mismatch Reset has occurred (must be set in software after a Configuration

Mismatch Reset occurs)

bit 4

RI: RESET

Instruction Flag bit

= The RESET instruction was not executed (set by firmware only)

= The RESET instruction was executed, causing a device Reset (must be set in software after a

Brown-out Reset occurs)

bit 3

TO:

Watchdog Time-out Flag bit

= Set by power-up, CLRWDT instruction or SLEEP instruction

= A WDT time-out occurred

bit 2

PD:

Power-Down Detection Flag bit

= Set by power-up or by the CLRWDT instruction

= Set by execution of the SLEEP instruction

bit 1

POR:

Power-on Reset Status bit

= A Power-on Reset has not occurred (set by firmware only)

= A Power-on Reset occurred (must be set in software after a Power-on Reset occurs)

bit 0

BOR:

Brown-out Reset Status bit

= A Brown-out Reset has not occurred (set by firmware only)

= A Brown-out Reset occurred (must be set in software after a Brown-out Reset occurs)

Note 1:

It is recommended that the POR bit be set after a Power-on Reset has been detected, so that subsequent

Power-on Resets may be detected.

If the on-chip voltage regulator is disabled, BOR remains at ‘0’ at all times. See Section 5.4.1 “Detecting

BOR”

for more information.

Brown-out Reset is said to have occurred when BOR is ‘0’ and POR is ‘1’ (assuming that POR was set to

‘1’ by software immediately after a Power-on Reset).

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