PIC18F2431-I/SP Microchip Technology Inc., PIC18F2431-I/SP Datasheet - Page 265

• Manufacturer Part Number: PIC18F2431-I/SP
• Description: Microcontroller; 16 KB Flash; 768 RAM; 256 EEPROM; 24 I/O; 28-Pin-SPDIP
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F2431-I/SP

• A/d Inputs: 5-Channel, 10-Bit
• Cpu Speed: 10 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 24
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SPDIP
• Programmable Memory: 16K Bytes
• Ram Size: 768 Bytes
• Speed: 40 MHz
• Timers: 1-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

21.1
The Low-Voltage Detect Control register controls the
operation of the Low-Voltage Detect circuitry.
REGISTER 21-1:
 2003 Microchip Technology Inc.
Control Register
bit 7-6
bit 5
bit 4
bit 3-0
LVDCON REGISTER
bit 7
Unimplemented: Read as ‘0’
IRVST: Internal Reference Voltage Stable Flag bit
1 = Indicates that the Low-Voltage Detect logic will generate the interrupt flag at the
0 = Indicates that the Low-Voltage Detect logic will not generate the interrupt flag at the
LVDEN: Low-Voltage Detect Power Enable bit
1 = Enables LVD, powers up LVD circuit
0 = Disables LVD, powers down LVD circuit
LVDL3:LVDL0: Low-Voltage Detection Limit bits
1111 = External analog input is used (input comes from the LVDIN pin)
1110 = 4.23V - 4.96V
1101 = 3.93V - 4.62V
1100 = 3.75V - 4.40V
1011 = 3.56V - 4.18V
1010 = 3.38V - 3.96V
1001 = 3.29V - 3.86V
1000 = 3.09V - 3.63V
0111 = 2.82V - 3.31V
0110 = 2.64V - 3.10V
0101 = 2.55V - 2.99V
0100 = 2.35V - 2.76V
0011 = 2.26V - 2.65V
0010 = 2.08V - 2.44V
0001 = Reserved
0000 = Reserved
Legend:
R = Readable bit
- n = Value at POR
Note:
U-0
—
specified voltage range
specified voltage range and the LVD interrupt should not be enabled
LVDL3:LVDL0 modes which result in a trip point below the valid operating voltage
of the device are not tested.
U-0
—
PIC18F2331/2431/4331/4431
IRVST
Preliminary
R-0
W = Writable bit
‘1’ = Bit is set
LVDEN
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
LVDL3
R/W-0
LVDL2
R/W-1
x = Bit is unknown
LVDL1
R/W-0
DS39616B-page 263
LVDL0
R/W-1
bit 0