The MAXQ622 16-bit RISC microcontroller (MCU) with an integrated USB transceiver handles low-power applications and operates from either an external 1.7V to 3.6V supply or directly from USB power. Intelligent supply monitoring enables the device to conserve power by actively switching from the main supply during periods of USB connectivity. It typically consumes 300 nA in stop-mode operation. Other features include 128 KB of flash memory, 6 KB of RAM, dual USART ports, dual SPI master/slave communication ports, an I2C port, an infrared module with carrier- frequency generation, and up to 56 GPIO pins. Additionally, it includes a secure memory-management unit to prevent device cloning and unauthorized access to application code. Available in a 64-pin LQFP and as bare die, prices start at $2.09 each/1,000. MAXIM INTEGRATED PRODUCTS, Sunnyvale, CA. (800) 998-8800.