PIC18F4420-E/ML

Program Memory Type:	FLASH
Base Part Number:	PIC18F4420
Supplier Device Package:	44-QFN (8x8)
Package / Case:	44-VQFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TA)
Oscillator Type:	Internal
Data Converters:	A/D 13x10b
Voltage - Supply (Vcc/Vdd):	4.2 V ~ 5.5 V
RAM Size:	768 x 8
EEPROM Size:	256 x 8
Series:	PIC® 18F
Program Memory Size:	16KB (8K x 16)
Number of I/O:	36
Peripherals:	Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Connectivity:	I²C, SPI, UART/USART
Speed:	25MHz
Core Size:	8-Bit
Core Processor:	PIC
Part Status:	Active
Packaging:	Tube

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PIC18F4420-E/ML application field and working principle

The PIC18F4420-E/ML is a flash-based 8-bit microcontroller with an enhanced core. It belongs to the PIC18F family that is developed by Microchip Technology Inc. It is widely used in a variety of embedded applications such as medical instrumentation, process control and automation, and monitoring systems.The PIC18F4420-E/ML is based on a RISC architecture and combines the powerful ALU with an efficient instruction set, high speed connections, and reliable memory. It is powered by a 12-bit enhanced core processor that operates at up to 64 MHz and contains 2KB of memory for data and instruction storage.The device carries a variety of features that enable it to perform a wide range of tasks. It includes two 16-bit timers/counters, a single-cycle hardware multiplier, and 10 channels of 10-bit A/D converters with up to 32 analog inputs. It also has multiple UARTs, SPI, and I2C peripherals. These features enable the PIC18F4420-E/ML to easily interact with external peripherals such as sensors, displays, and motors.In addition to versatile I/O capabilities, the PIC18F4420-E/ML has enhanced flash programming features such as boot loading, program execution protection, a flash write protect register and an onboard LCD driver. The device also supports a wide range of programming languages such as C, BASIC and ADA.The PIC18F4420-E/ML\'s working principle is based on the concept of a fetch-execute cycle. When the device is powered up, the instruction located at the program counter is fetched. The processor then reads the instruction, decodes it and executes it accordingly. The instruction is then sent to the corresponding module such as the peripheral modules or the stack.The PIC18F4420-E/ML\'s microcontroller is divided into two basic units. The core subsystem contains the processing resources of the processor including the ALU and registers. The peripheral subsystem consists of all the on board peripherals such as the UART, I2C, analog comparators and other modules.The PIC18F4420-E/ML is an essential tool for embedded designers as it helps to easily integrate digital and analog peripherals, increase the performance of their embedded systems, and reduce their system cost. Thanks to its features, the PIC18F4420-E/ML can easily find application in various fields such as consumer electronics, industrial control and automation, portable instrumentation, smart meters, and embedded systems.

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