Advanced ‘X2’ part Features (20X2, 28X2, 40X2 part) • all X1 part features plus • up to 4 internal program slots and 32 external program slots • increased RAM, up to 256 bytes + 1024 bytes scratchpad • increased operating speed, up to 64MHz • individual pin input/output control • many more ADC pins available PICAXE-28X1 microcontroller chip. Enhanced 28 pin microcontroller with double memory and additional features including i2c/spi bus support. • interrupts • support for digital temperature sensor • control of radio-control servos • keyboard input • plays user defined musical tunes • infra-red transmit and receive • 8/10 bit ADC option • control of radio-control servos • pwm motor control • input pulse counting • serial output via programming cable • i2c interface for linking to external EEPROMS and other devices • 12 bit temperature read option • pwm motor control • input pulse counting • serial output via programming cable • higher baud rate for serial work • program memory 16x larger than A part (1000 lines) • hardware i2c (master & slave), spi and serial functions • internal timer • increased variables and separate scratchpad • enhanced mathematical capabilities • real life line by line simulation Datasheet (488K) PDF
