Cortex-M0-based MCUs have extended memory, USB 2.0

The STM32F030CC microcontroller features 256 Kbytes of program flash, and the STM32F070CB has a USB 2.0 full-speed interface with compliant Battery Charger Detection (BCD v1.2) and Link Power Management (LPM), enabling optimum energy efficiency and longer battery life. The 32F070CB has 128 Kbytes of flash and 16 Kbytes of SRAM. Both MCUs use a 48-MHz Cortex-M0 core.

The 48- or 64-pin LQFP- or TSSOP20-packaged ICs a have a five-channel DMA controller, internal voltage regulator, 12-bit 1.0 μs A/D converter with up to 19 channels, an RTC, 11 timers, two I² C interfaces, six USARTs, and two SPIs ports. They operate from 2.4 to 3.6 V over -40° to 85°C. From $0.99 ea/10,000.