PIC18F4420-I/P
PIC18F4420-I/P - 40MHz 8-Bit Flash MCU | Microchip
The Microchip Technology PIC18F4420-I/P is an 8-bit RISC flash microcontroller with a 40 MHz maximum clock, 16 KB of programmable Flash, 768 bytes of RAM, and 256 bytes of data EEPROM in a 40-pin PDIP package. It also includes 36 I/O pins, a 10-bit ADC, and two comparators for compact embedded-control designs.
A PIC18 microcontroller combines an 8-bit CPU, program memory, data memory, and peripherals on one integrated circuit. The PIC18F4420 belongs to the PIC18 enhanced-Flash family and sits within the hierarchy of 8-bit MCU, embedded controller, microcontroller, and semiconductor. Its nanoWatt Technology supports power-conscious operation, while the enhanced architecture provides a practical balance between processing capability, peripheral integration, and program-memory capacity.
Principal features include operation up to 40 MHz, 16 KB of Flash program memory, 768 bytes of RAM, and 256 bytes of nonvolatile EEPROM. The device provides 13 channels of 10-bit analog-to-digital conversion, two comparators, 36 I/O pins, an internal oscillator, a fail-safe clock monitor, and a watchdog timer. These resources make it suitable for control systems that need mixed analog and digital sensing without a separate processor.
The PIC18F4420-I/P uses a RISC-based PIC18 CPU and provides up to 10 MIPS according to the family documentation. An internal oscillator supports approximately 31 kHz to 8 MHz operation, while a 4× PLL can extend the clock to as high as 32 MHz when required by the design. Its 4.2 V to 5.5 V supply range places it in the traditional 5 V microcontroller class rather than the lower-voltage nanoWatt operating range of related LF devices.
Typical uses include industrial control panels, temperature controllers, data-acquisition modules, motor-control interfaces, appliance controllers, and compact instrumentation. The 13-channel 10-bit ADC is especially useful for monitoring analog sensors, while the comparator outputs and digital I/O support threshold detection, timing functions, and external interface logic.
When laying out a circuit, treat every I/O pin as a potentially sensitive analog or digital node, provide decoupling at the supply pins, and confirm the oscillator configuration through programming rather than assuming the maximum clock is always active. The -40°C to +85°C industrial temperature designation supports a broad range of commercial and industrial ambient conditions.
This product page combines the manufacturer specifications, package details, practical engineering guidance, and pin-compatible alternatives in a format designed to accelerate component selection, schematic review, PCB planning, and sourcing for PIC18F4420-I/P designs.
RFQ
צור קשר
