Specification	PIC18F4431-I/P

A/D Channels	9 count
A/D Resolution (bits)	10 bit
Connectivity	USART, UART, SPI, I2C
Core Processor	PIC
Core Size (Bit Width)	8 Bit
EEPROM Size (Depth)	256
EEPROM Size (Width)	8 bit
Mounting Type	Through Hole
Number of I/O	36
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Oscillator Type	Internal
Package Length	0.6 in
Package Name	40-PDIP, 40-DIP
Package Width	15.24 mm
Peripherals	Reset, LVD, PWM, Brown-out Detect, QEI, POR, WDT, Power Control PWM
Program Memory Depth	8 K
Program Memory Size	16 KB
Program Memory Type	FLASH
Program Memory Width	16
RAM Size Depth	768
RAM Size Width	8 bit
Speed	40 MHz
Voltage - Supply (Vcc/Vdd) Maximum	5.5 V
Voltage - Supply (Vcc/Vdd) Minimum	4.2 V

PIC18F4431 Series

Part	Mounting Type	EEPROM Size (Width)	EEPROM Size (Depth)	Peripherals	Speed	Operating Temperature (Max)	Operating Temperature (Min)	Core Size (Bit Width)	Number of I/O	Oscillator Type	Package Length	Package Name	Package Width	Program Memory Type	Program Memory Depth	Program Memory Size	Program Memory Width	RAM Size Width	RAM Size Depth	A/D Resolution (bits)	A/D Channels	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Core Processor	Connectivity	Package / Case
Microchip Technology PIC18F4431-E/ML	Surface Mount	8 bit	256	Brown-out Detect LVD POR Power Control PWM PWM QEI Reset WDT	40 MHz	125 °C	-40 °C	8 Bit	36	Internal	8 mm	44-QFN	8 mm	FLASH	8 K	16 KB	16	8 bit	768	10 bit	9 count	4.2 V	5.5 V	PIC	I2C SPI UART USART	44-VQFN Exposed Pad
Microchip Technology PIC18F4431-E/P	Through Hole	8 bit	256	Brown-out Detect LVD POR Power Control PWM PWM QEI Reset WDT	40 MHz	125 °C	-40 °C	8 Bit	36	Internal	0.6 in	40-DIP 40-PDIP	15.24 mm	FLASH	8 K	16 KB	16	8 bit	768	10 bit	9 count	4.2 V	5.5 V	PIC	I2C SPI UART USART
Microchip Technology PIC18F4431T-I/ML	Surface Mount	8 bit	256	Brown-out Detect LVD POR Power Control PWM PWM QEI Reset WDT	40 MHz	85 °C	-40 °C	8 Bit	36	Internal	8 mm	44-QFN	8 mm	FLASH	8 K	16 KB	16	8 bit	768	10 bit	9 count	4.2 V	5.5 V	PIC	I2C SPI UART USART	44-VQFN Exposed Pad
Microchip Technology PIC18LF4431-I/P	Through Hole	8 bit	256	Brown-out Detect LVD POR Power Control PWM PWM QEI Reset WDT	40 MHz	85 °C	-40 °C	8 Bit	36	Internal	0.6 in	40-DIP 40-PDIP	15.24 mm	FLASH	8 K	16 KB	16	8 bit	768	10 bit	9 count	2 V	5.5 V	PIC	I2C SPI UART USART
Microchip Technology PIC18F4431-I/ML	Surface Mount	8 bit	256	Brown-out Detect LVD POR Power Control PWM PWM QEI Reset WDT	40 MHz	85 °C	-40 °C	8 Bit	36	Internal	8 mm	44-QFN	8 mm	FLASH	8 K	16 KB	16	8 bit	768	10 bit	9 count	4.2 V	5.5 V	PIC	I2C SPI UART USART	44-VQFN Exposed Pad
Microchip Technology PIC18LF4431-I/PT	Surface Mount	8 bit	256	Brown-out Detect LVD POR Power Control PWM PWM QEI Reset WDT	40 MHz	85 °C	-40 °C	8 Bit	36	Internal	10 mm	44‑TQFP	10 mm	FLASH	8 K	16 KB	16	8 bit	768	10 bit	9 count	2 V	5.5 V	PIC	I2C SPI UART USART	44-TQFP
Microchip Technology PIC18F4431-I/PT	Surface Mount	8 bit	256	Brown-out Detect LVD POR Power Control PWM PWM QEI Reset WDT	40 MHz	85 °C	-40 °C	8 Bit	36	Internal	10 mm	44‑TQFP	10 mm	FLASH	8 K	16 KB	16	8 bit	768	10 bit	9 count	4.2 V	5.5 V	PIC	I2C SPI UART USART	44-TQFP
Microchip Technology PIC18F4431-E/PT	Surface Mount	8 bit	256	Brown-out Detect LVD POR Power Control PWM PWM QEI Reset WDT	40 MHz	125 °C	-40 °C	8 Bit	36	Internal	10 mm	44‑TQFP	10 mm	FLASH	8 K	16 KB	16	8 bit	768	10 bit	9 count	4.2 V	5.5 V	PIC	I2C SPI UART USART	44-TQFP
Microchip Technology PIC18F4431T-I/PT	Surface Mount	8 bit	256	Brown-out Detect LVD POR Power Control PWM PWM QEI Reset WDT	40 MHz	85 °C	-40 °C	8 Bit	36	Internal	10 mm	44‑TQFP	10 mm	FLASH	8 K	16 KB	16	8 bit	768	10 bit	9 count	4.2 V	5.5 V	PIC	I2C SPI UART USART	44-TQFP
Microchip Technology PIC18F4431-I/P	Through Hole	8 bit	256	Brown-out Detect LVD POR Power Control PWM PWM QEI Reset WDT	40 MHz	85 °C	-40 °C	8 Bit	36	Internal	0.6 in	40-DIP 40-PDIP	15.24 mm	FLASH	8 K	16 KB	16	8 bit	768	10 bit	9 count	4.2 V	5.5 V	PIC	I2C SPI UART USART