The MCF51MM256/128 provides ultra low-power operation, USB connectivity, graphic display support and unparalleled measurement accuracy, all in a single 32-bit microcontroller (MCU), allowing designers to create more fully featured products at a lower cost. The MCF51MM256/128 is ideal for medical applications or other applications requiring a significant amount of precision analog such as instrumentation and industrial control. The MCF51MM256/128 is part of the Freescale Flexis MCU series.ColdFire V1 core delivering a 50 MHz core speed and 25 MHz bus speedUp to 256 KB flash and 32 KB SRAMLow-power stop 2 current:500 nA (32 KB of active SRAM)2 x general purpose opamps2 x transimpedance amplifiers16-bit SAR high resolution analog-to-digital converter(ADC)Analog Comparator with 5-bit digital-to-analog converter (DAC)Internal voltage referenceUSB - device/host/on-the-go controller2 x serial peripheral interface (SPI), 2 x serial communication interface (SCI) and 1 x I²CMini FlexBus (external bus interface)