PIC18F4431-E/PT Microchip Technology, PIC18F4431-E/PT Datasheet - Page 265

• Manufacturer Part Number: PIC18F4431-E/PT
• Description: IC MCU FLASH 8KX16 44TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4431-E/PT

• Core Size: 8-Bit
• Program Memory Size: 16KB (8K x 16)
• Oscillator Type: Internal
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 9x10b
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-TQFP, 44-VQFP
• Controller Family/series: PIC18
• No. Of I/o's: 36
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 768Byte
• Cpu Speed: 40MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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