In late April Microchip released the PIC24FV32KA304, the most recent addition to the eXtreme Low Power 16-bit MCU portfolio. This a product worth noting.
With its 1.8V to 5.5V operation, low run and idle currents (8.0 mA and 2.2 mA, respectively), and extremely low deep sleep mode current (20 nA), the PIC24FV32KA304 offers an unsurpassed combination of functionality and low power.
From industrial applications such as wireless sensors and security systems to portable medical and consumer devices to white goods and smoke/CO2 sensors, the PIC24FV32KA304 offers the processing power, I/O channels, peripherals and low power to meet the needs of a variety of applications.
Key features include a 16-channel 12-bit/100 kSPS ADC with temp sensor and voltage reference, 2X the Flash memory (32 kB) of earlier versions, 30% more RAM (2K), double the UART, I2C and SPI channels, plus mTouch sensing and CTMU capability. All in a small 6X6 48-pin UQFN package.
Relevant Links
Details on the product can be found at:
http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en552713
Information on nanoWatt 16-bit development board here: http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en544410