Plessey SP8838B/DG is an 8-bit microcontroller featuring an advanced modified Harvard architecture, with operating speed up to 20MHz. It features 32KB of flash memory and 2KB of RAM, with a range of peripherals including three Timers, a UART, an I2C interface, SPI, PWM and ADC. This microcontroller provides low power consumption, low voltage operation and fully static operation. It also supports enhanced power down to maintain system integrity.