The Picaxe-40X2 Chip is the largest PICAXE microcontroller in the enhanced X2 range. Ideal for hobbyist projects due to its powerful features and extensive i/o capabilities, but also suitable for more advanced educational use. This is the universal voltage version 40X2 chip (based on the PIC18F45K22).

The 40X2 supports up to 33 inputs/outputs with 27 analogue/touch sensor channels with an operating speed of up to 16MHz using an internal oscillator. Also up to 64MHz using an external resonator or crystal. This chip supports 4 internal and up to 32 external program slots. It is capable of acting as an i2c slave device and comes in an industry-standard 0.6" wide, 40-pin package.

All X2 series parts support enhanced features such as configurable i/o pins, ring tone music and touch sensor inputs, i2c, spi and high-speed serial with background receive. Scratchpad memory plus separate Data EEPROM and Data Table are supported.

You can use the microcontroller with any software application that supports the PICAXE hardware, including the free PICAXE Programming Editor.