PICAXE 28X2 is a very popular with hobbyists. The 28X2 supports up to 22 inputs/outputs with 16 analogue/touch sensor channels with an operating speed up to 16MHz using an internal oscillator and up to 64MHz using an external resonator or crystal. This chip supports 4 internal and up to 32 external program slots and is capable of acting as an i2c slave device.
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A very popular enhanced X2 PICAXE microcontroller. Favoured in hobbyist projects due to its powerful features and capabilities, but also suitable for more advanced educational use. This is the universal voltage version 28X2 chip (based on the PIC18F25K22).
The 28X2 supports up to 22 inputs/outputs with 16 analogue/touch sensor channels with an operating speed up to 16MHz using an internal oscillator and up to 64MHz using an external resonator or crystal. This chip supports 4 internal and up to 32 external program slots and is capable of acting as an i2c slave device.
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.
Click here for more X2 series information.
The PICAXE-28X2 replaces the older PICAXE-28, 28A, 28X, 28X1, 28X2-5V (PIC18F2520) and 28X2-3V (PIC18F25K20) chips.
|Memory Capacity (bytes)||2048||2048||2048||2048||4096||4096||4096|
|Byte Variables (bytes)||28||28||28||28||56||56||56|
|Max. Freq. (MHz)||32||32||32||32||64||64||64|
|Tune (ring tones)||Yes||Yes||Yes||Yes||Yes||Yes||Yes|
The same software, BASIC language and USB download cable is shared between all the PICAXE chips.
|PICAXE-28X2 Microcontroller Datasheet||PDF Datasheet|
|X2 Series Product Summary||PDF Datasheet|
|Details of using 'pwmdiv' options with the 'pwmout' command on the PICAXE-28X2||Forum Link|