Integrated Circuits (ICs)

PIC18F4321T-I/ML

Obsolete

Microchip Technology

IC MCU 8BIT 8KB FLASH 44QFN

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Search across all available documentation for this part.

DocumentsPIC18F2x21, 4x21 Data Sheet Datasheet

Integrated Circuits (ICs)

PIC18F4321T-I/ML

Obsolete

Microchip Technology

IC MCU 8BIT 8KB FLASH 44QFN

Deep-Dive with AI

DocumentsPIC18F2x21, 4x21 Data Sheet Datasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	PIC18F4321T-I/ML

Connectivity	I2C, SPI, UART/USART
Core Processor	PIC
Core Size	8-Bit
Data Converters [custom]	10 b
Data Converters [custom]	13
EEPROM Size	256 x 8
Mounting Type	Surface Mount
Number of I/O	36
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Oscillator Type	Internal
Package / Case	44-VQFN Exposed Pad
Peripherals	Brown-out Detect/Reset, POR, PWM, HLVD, WDT
Program Memory Size	8 KB
Program Memory Type	FLASH
RAM Size	512
Speed	40 MHz
Supplier Device Package	44-QFN (8x8)
Voltage - Supply (Vcc/Vdd) [Max]	5.5 V
Voltage - Supply (Vcc/Vdd) [Min]	4.2 V

PIC18LF4321 Series

Part	Data Converters [custom]	Data Converters [custom]	Program Memory Type	RAM Size	Speed	Supplier Device Package	Oscillator Type	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	EEPROM Size	Core Size	Mounting Type	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Number of I/O	Core Processor	Peripherals	Connectivity	Program Memory Size	Package / Case	Package / Case
Microchip Technology PIC18LF4321T-I/PT	10 b	13	FLASH	512	40 MHz	44-TQFP (10x10)	Internal	5.5 V	2 V	256 x 8	8-Bit	Surface Mount	44-TQFP	85 °C	-40 °C	36	PIC	Brown-out Detect/Reset HLVD POR PWM WDT	I2C SPI UART/USART	8 KB
Microchip Technology PIC18LF4321-I/PT	10 b	13	FLASH	512	40 MHz	44-TQFP (10x10)	Internal	5.5 V	2 V	256 x 8	8-Bit	Surface Mount	44-TQFP	85 °C	-40 °C	36	PIC	Brown-out Detect/Reset HLVD POR PWM WDT	I2C SPI UART/USART	8 KB
Microchip Technology PIC18F4321-I/ML	10 b	13	FLASH	512	40 MHz	44-QFN (8x8)	Internal	5.5 V	4.2 V	256 x 8	8-Bit	Surface Mount	44-VQFN Exposed Pad	85 °C	-40 °C	36	PIC	Brown-out Detect/Reset HLVD POR PWM WDT	I2C SPI UART/USART	8 KB
Microchip Technology PIC18LF4321-I/P	10 b	13	FLASH	512	40 MHz	40-PDIP	Internal	5.5 V	2 V	256 x 8	8-Bit	Through Hole	40-DIP	85 °C	-40 °C	36	PIC	Brown-out Detect/Reset HLVD POR PWM WDT	I2C SPI UART/USART	8 KB	15.24 mm	0.6 in
Microchip Technology PIC18F4321-I/PT	10 b	13	FLASH	512	40 MHz	44-TQFP (10x10)	Internal	5.5 V	4.2 V	256 x 8	8-Bit	Surface Mount	44-TQFP	85 °C	-40 °C	36	PIC	Brown-out Detect/Reset HLVD POR PWM WDT	I2C SPI UART/USART	8 KB
Microchip Technology PIC18F4321T-I/PT	10 b	13	FLASH	512	40 MHz	44-TQFP (10x10)	Internal	5.5 V	4.2 V	256 x 8	8-Bit	Surface Mount	44-TQFP	85 °C	-40 °C	36	PIC	Brown-out Detect/Reset HLVD POR PWM WDT	I2C SPI UART/USART	8 KB
Microchip Technology PIC18LF4321T-I/ML	10 b	13	FLASH	512	40 MHz	44-QFN (8x8)	Internal	5.5 V	2 V	256 x 8	8-Bit	Surface Mount	44-VQFN Exposed Pad	85 °C	-40 °C	36	PIC	Brown-out Detect/Reset HLVD POR PWM WDT	I2C SPI UART/USART	8 KB
Microchip Technology PIC18F4321-E/P	10 b	13	FLASH	512	25 MHz	40-PDIP	Internal	5.5 V	4.2 V	256 x 8	8-Bit	Through Hole	40-DIP	125 °C	-40 °C	36	PIC	Brown-out Detect/Reset HLVD POR PWM WDT	I2C SPI UART/USART	8 KB	15.24 mm	0.6 in
Microchip Technology PIC18F4321T-I/ML	10 b	13	FLASH	512	40 MHz	44-QFN (8x8)	Internal	5.5 V	4.2 V	256 x 8	8-Bit	Surface Mount	44-VQFN Exposed Pad	85 °C	-40 °C	36	PIC	Brown-out Detect/Reset HLVD POR PWM WDT	I2C SPI UART/USART	8 KB
Microchip Technology PIC18F4321-E/PT	10 b	13	FLASH	512	25 MHz	44-TQFP (10x10)	Internal	5.5 V	4.2 V	256 x 8	8-Bit	Surface Mount	44-TQFP	125 °C	-40 °C	36	PIC	Brown-out Detect/Reset HLVD POR PWM WDT	I2C SPI UART/USART	8 KB

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Description

General part information

PIC18LF4321 Series

This powerful 10 MIPS (100 nanosecond instruction execution), yet easy-to-program (only 77 single word instructions) CMOS Flash-based 8-bit microcontroller packs Microchip's powerful PIC® architecture into a 44-pin package and is upwards compatible with the PIC16C5X, PIC12CXXX, PIC16CXX and PIC17CXX devices and provides a seamless migration path of software code to higher levels of hardware integration.

The PIC18F4321 features a C compiler-friendly development environment, 256 bytes of EEPROM, self-programming, an ICD, 2 capture/compare/PWM functions, 13 channels of 10-bit Analog-to-Digital (A/D) converter, 2 comparators, the synchronous serial port can be configured as either 3-wire Serial Peripheral Interface (SPI™) or the 2-wire Inter-Integrated Circuit (I²C™) bus and Enhanced Universal Asynchronous Receiver Transmitter (EUSART), 8 MHz internal RC oscillator and advanced low power oscillator controls.

All of these features make it ideal for battery powered and power consumption critical applications including instrumentation and monitoring, data acquisition, power conditioning, environmental monitoring, telecom and consumer audio/video applications.

Documents

Technical documentation and resources

PIC18F2x21, 4x21 Data Sheet

Datasheet