PIC18F458T-I/PT Microchip Technology, PIC18F458T-I/PT Datasheet - Page 60

• Manufacturer Part Number: PIC18F458T-I/PT
• Description: IC MCU FLASH 16KX16 W/CAN 44TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F458T-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.14
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.
REGISTER 4-3:
DS41159E-page 58
PIC18FXX8
RCON Register
bit 7
bit 6-5
bit 4
bit 3
bit 2
bit 1
bit 0
RCON: RESET CONTROL REGISTER
bit 7
IPEN: Interrupt Priority Enable bit
1 = Enable priority levels on interrupts
0 = Disable priority levels on interrupts (PIC16CXXX Compatibility mode)
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
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
R/W-0
IPEN
(must be set in software after a Brown-out Reset occurs)
U-0
—
U-0
—
W = Writable bit
‘1’ = Bit is set
R/W-1
RI
Note 1: If the BOREN configuration bit is set,
2: It is recommended that the POR bit be set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W
TO
BOR is ‘1’ on Power-on Reset. If the
BOREN configuration bit is clear, BOR is
unknown on Power-on Reset.
The BOR status bit is a “don’t care” and is
not necessarily predictable if the brown-
out circuit is disabled (the BOREN config-
uration bit is clear). BOR must then be set
by the user and checked on subsequent
Resets to see if it is clear, indicating a
brown-out has occurred.
after a Power-on Reset has been
detected, so that subsequent Power-on
Resets may be detected.
R/W
PD
© 2006 Microchip Technology Inc.
x = Bit is unknown
R/W-0
POR
R/W-0
BOR
bit 0