PIC18F4321-I/P 8-bit Flash Microcontroller (13-channel ADC)
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Prices updated: 13 Oct 2026
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About this product
The PIC18F4321-I/P is an 8-bit Flash microcontroller from Microchip with 77 single-word instructions and up to 10 MIPS performance. It provides 256 bytes of EEPROM, self-programming, an in-circuit debugger interface, two capture/compare/PWM functions, 13 channels of 10-bit ADC, two comparators and a synchronous serial port that supports SPI or I2C. It suits analog-rich embedded designs.
Specifications
- Speed
- Up to 10 MIPS
- Instruction set
- 77 single-word instructions
- Data EEPROM
- 256 bytes
- ADC
- 13 channels, 10-bit
- Capture/compare/PWM
- 2
- Comparators
- 2
- Serial interface
- SPI or I2C (synchronous)
- Package (as listed)
- 44-pin
Frequently asked questions
Which package will I receive, 40-pin or 44-pin?
The listing states 44-pin, but the /P suffix normally denotes PDIP, and PIC18F4321 is offered in both 40-pin PDIP and 44-pin TQFP/QFN forms. Confirm the package marking and the datasheet before PCB layout.
How is it programmed?
Through In-Circuit Serial Programming (ICSP) with a Microchip programmer such as a PICkit or a compatible tool.
