Energy Micro EFM32LG942F64

The Energy Micro EFM32LG942F64 is an ARM Cortex-M3 CPU platform High Performance 32-bit processor running up to 48 MHz Memory Protection Unit Wake-up Interrupt Controller Flexible Energy Management System 1024/512 KB Flash 128/32 KB RAM Up to 90 GPIO pins Configurable Push-pull, Open-drain, pull-up/down, input filter, drive strength Configurable peripheral I/O locations 16 asynchronous external interrupts 12 Channel DMA Controller Alternate/primary descriptors with scatter-gather/ping-pong operation 12 Channel Peripheral Reflex System for autonomous inter-peripheral signaling External Bus Interface for up to 256 MB of external memory mapped space Universal Serial Bus (USB) with Host and OTG support Fully USB 2.0 compliant On-chip PHY and embedded 5V to 3.3V regulator Integrated LCD Controller for up to 8x36 segments Hardware AES with 128/256-bit keys in 54/75 cycles Communication interfaces 3x Universal Synchronous/Asynchronous Receiver/Transmitter 2x Universal Asynchronous Receiver/Transmitter 2× Low Energy UART 2× I2C Interface with SMBus support Timers/Counters 4x 16-bit Timer/Counter 16-bit Low Energy Timer 1x 24-bit and 1x 32-bit Real-Time Counter Watchdog Timer with dedicated RC oscillator Backup Power Domain RTC and retention registers in a seperate power domain Operation from backup battery when main power drains out Ultra low power precision analog peripherals 12-bit 1 Msamples/s Analog to Digital Converter 12-bit 500 ksamples/s Digital to Analog Converter Up to 3 Operational Amplifiers 2x Analog Comparator Supply Voltage Comparator Ultra low power sensor interface Wide range of sensors supported, including LC sensors and capacitive buttons Ultra efficient Power-on Reset and Brown-Out Detector Debug Interface 2-pin Serial Wire Debug interface - 1-pin Serial Wire Viewer Embedded Trace Module v3.5 (ETM).