• Up to 10 MIPS performance
• C compiler optimized RISC architecture
• 8 x 8 Single Cycle Hardware Multiply
• Internal oscillator support - 31 kHz to 8 MHz, up to 32 MHz with 4X PLL
• Fail-Safe Clock Monitor – allows safe shutdown if clock fails
• Watchdog Timer with separate RC oscillator
• Wide operating Voltage range; 2.0V to 5.5V
• Run, Idle and Sleep modes
• Idle mode currents down to 5.8uA typical
• Sleep mode currents down to 0.1uA typical
• 10-bit ADC, 13 channels, 100K samples per second
• Programmable Low Voltage Detection Module
• Programmable Brown-out Reset module
• Two Analog comparators with input multiplexing
• Master Synchronous Serial Port supports SPI ™ and I2C™ Master and Slave Mode
• EUSART module including LIN bus support
• Four Timer Modules
• Up to 5 PWM outputs
• Up to 2 Capture / Compare

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 PIC18F4221 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.