PIC18LF4539-E/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF4539-E/SO

Enhanced FLASH Microcontrollers with Single Phase Induction Motor Control Kernel

Microchip Technology 

PIC18FXX39

4.14 RCON Register

The Reset Control (RCON) register contains flag bits

that allow differentiation between the sources of a

device RESET. These flags include the TO, PD, POR,

BOR and RI bits. This register is readable and writable.

For PIC18FXX39 devices, the IPEN bit must always be

set (= 1) for the ProMPT kernel to function correctly.

Refer to Section 8.0 (page 69) for a more detailed

discussion.

REGISTER 4-3: RCON REGISTER

R/W-0

U-0

U-0

IPEN

—

—

bit 7

Note 1: If the BOREN configuration bit is set

(Brown-out Reset enabled), the BOR bit is

‘1’ on a Power-on Reset. After a Brown-

out Reset has occurred, the BOR bit will

be cleared, and must be set by firmware to

indicate the occurrence of the next

Brown-out Reset.

2: 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.

R/W-1

R-1

RI

TO

R-1

R/W-0 R/W-0

PD

POR

BOR

bit 0

bit 7

bit 6-5

bit 4

bit 3

bit 2

bit 1

bit 0

IPEN: Interrupt Priority Enable bit

Always maintain this bit set for proper operation of ProMPT kernel.

Unimplemented: Read as '0'

RI: RESET Instruction Flag bit

1 = The RESET instruction was not executed

0 = The RESET instruction was executed causing a device RESET

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

TO: Watchdog Time-out Flag bit

1 = After power-up, CLRWDT instruction, or SLEEP instruction

0 = A WDT time-out occurred

PD: Power-down Detection Flag bit

1 = After power-up or by the CLRWDT instruction

0 = By execution of the SLEEP instruction

POR: Power-on Reset Status bit

1 = A Power-on Reset has not occurred

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

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

W = Writable bit

‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’

‘0’ = Bit is cleared x = Bit is unknown

DS30485B-page 50

Preliminary

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