The ultra-low-power device incorporates the connectivity power of the universal serial bus (USB) with the high-performance ARM Cortex™-M3 32-bit RISC core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories, a flexible static memory controller (FSMC) interface (for devices with packages of 100 pins and more) and an extensive range of enhanced I/Os and peripherals connected to two APB buses. The devices offer three operational amplifiers, one 12-bit ADC, two DACs, two ultra-low-power comparators, one general-purpose 32-bit timer, six general-purpose 16-bit timers and two basic timers, which can be used as time bases. Moreover, the device contain standard and advanced communication interfaces: up to two I2Cs, three SPIs, two I2S, one SDIO, three USARTs, two UARTs and a USB. The device offer up to 34 capacitive sensing channels to simply add touch sensing functionality to any application.
● Ultra-low-power platform1.65 V to 3.6 V power supply
● Core: ARM 32-bit Cortex™-M3 CPU
● Up to 34 capacitive sensing channels
● CRC calculation unit, 96-bit unique ID
● Reset and supply management
● Clock sources
● Pre-programmed bootloader USB and USART supported
● Serial wire debug, JTAG and trace
● Up to 116 fast I/Os (102 I/Os 5V tolerant), all mappable on 16 external interrupt vectors
● LCD driver for up to 8x40 segments (contrast adjustment, blinking mode, step-up converter)
● Rich analogue peripherals
● DMA controller 12x channels
● 12x peripherals communication interface
● 11x timers
