PIC18F2420 MICROCHIP [Microchip Technology], PIC18F2420 Datasheet - Page 44

• Manufacturer Part Number: PIC18F2420
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2420/2520/4420/4520
REGISTER 4-1:
DS39631A-page 42
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
RCON REGISTER
bit 7
IPEN: Interrupt Priority Enable bit
1 = Enable priority levels on interrupts
0 = Disable priority levels on interrupts (PIC16CXXX Compatibility mode)
SBOREN: BOR Software Enable bit
If BOREN1:BOREN0 = 01:
1 = BOR is enabled
0 = BOR is disabled
If BOREN1:BOREN0 = 00, 10 or 11:
Bit is disabled and read as ‘0’.
Unimplemented: Read as ‘0’
RI: RESET Instruction Flag bit
1 = The RESET instruction was not executed (set by firmware only)
0 = The RESET instruction was executed causing a device Reset (must be set in software after
TO: Watchdog Time-out Flag bit
1 = Set by power-up, CLRWDT instruction or SLEEP instruction
0 = A WDT time-out occurred
PD: Power-down Detection Flag bit
1 = Set by power-up or by the CLRWDT instruction
0 = Set by execution of the SLEEP instruction
POR: Power-on Reset Status bit
1 = A Power-on Reset has not occurred (set by firmware only)
0 = A Power-on Reset occurred (must be set in software after a Power-on Reset occurs)
BOR: Brown-out Reset Status bit
1 = A Brown-out Reset has not occurred (set by firmware only)
0 = A Brown-out Reset occurred (must be set in software after a Brown-out Reset occurs)
Legend:
R = Readable bit
-n = Value at POR
R/W-0
Note 1: If SBOREN is enabled, its Reset state is ‘1’; otherwise, it is ‘0’.
Note 1: It is recommended that the POR bit be set after a Power-on Reset has been
IPEN
a Brown-out Reset occurs)
2: Brown-out Reset is said to have occurred when BOR is ‘0’ and POR is ‘1’ (assuming
2: The actual Reset value of POR is determined by the type of device Reset. See the
detected so that subsequent Power-on Resets may be detected.
that POR was set to ‘1’ by software immediately after POR).
notes following this register and Section 4.6 “Reset State of Registers” for
additional information.
SBOREN
R/W-1
(1)
U-0
Preliminary
—
W = Writable bit
‘1’ = Bit is set
(2)
(1)
R/W-1
RI
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R-1
TO
R-1
PD
 2004 Microchip Technology Inc.
R/W-0
x = Bit is unknown
POR
(2)
R/W-0
BOR
bit 0