MCU 32BIT CORTEX-M3 48MHZ QFN-64; Product Range:EFM32 Zero Gecko Microcontrollers; No. of Bits:32bit; CPU Speed:48MHz; Program Memory Size:1MB; RAM Memory Size:128KB; No. of Pins:64Pins; MCU Case Style:QFN; No. of I/O's:52I/O's; Architecture:ARM Cortex-M3; Embedded Interface Type:I2C SPI UART USART USB; Supply Voltage Min:1.98V; Supply Voltage Max:3.8V; Packaging:Each; MSL:MSL 3 - 168 hours