Silicon Laboratories, Inc. EFM32LG332F256

The Silicon Laboratories, Inc. EFM32LG332F256 is an ARM Cortex-M3 CPU platform High Performance 32-bit processor @ up to 48 MHz Memory Protection Unit Flexible Energy Management System 256/128/64 KB Flash 32/32/32 KB RAM 50 General Purpose I/O pins 16 asynchronous external interrupts 12 Channel DMA Controller 12 Channel Peripheral Reflex System (PRS) for autonomous inter-peripheral signaling Hardware AES with 128/256-bit keys in 54/75 cycles Timers/Counters 4x 16-bit Timer/Counter 4x3 Compare/Capture/PWM channels 16-bit Low Energy Timer 1x 24-bit and 1x 32-bit Real-Time Counter 3x 16/8-bit Pulse Counter with asynchronous operation Watchdog Timer with dedicated RC oscillator @ 50 nA Backup Power Domain RTC and retention registers in a separate power domain, available in all energy modes Operation from backup battery when main power drains out Communication interfaces 3x Universal Synchronous/Asynchronous Receiver/Transmitter UART/SPI/SmartCard (ISO 7816)/IrDA/I2S 2x Low Energy UART Autonomous operation with DMA in Deep Sleep Mode 2x I2C Interface with SMBus support Universal Serial Bus (USB) with Host and OTG support Fully USB 2.0 compliant On-chip PHY and embedded 5V to 3.3V regulator 12-bit 1 Msamples/s Analog to Digital Converter 8 single ended channels/4 differential channels On-chip temperature sensor 12-bit 500 ksamples/s Digital to Analog Converter 2 single ended channels/1 differential channel 2x Analog Comparator Capacitive sensing with up to 4 inputs 3x Operational Amplifier 6.1 MHz GBW, Rail-to-rail, Programmable Gain Supply Voltage Comparator Low Energy Sensor Interface (LESENSE) Autonomous sensor monitoring in Deep Sleep Mode Wide range of sensors supported, including LC sensors and capacitive buttons.