SparkFun Thing Plus (STM32)

SparkFun Thing Plus (STM32)
SFE-DEV-17712 (a)

Sold as-is. Returns and complaints are not accepted.
This item is unused.
Selling because I no longer have a use for it.

- Arm 32-bit Cortex-M4 CPU (FPU)
  + Adaptive real-time accelerator (ART Accelerator) for 0-wait-state execution from flash memory
  + Up to 168 MHz frequency
  + Memory protection unit
  + 210 DMIPS / 1.25 DMIPS/MHz (Dhrystone 2.1)
  + DSP instructions
- 1 MB Flash memory
- 192 KB SRAM (including 64 KB CCM data RAM)
- Flexible SRAM controller supporting Compact Flash, SRAM, PSRAM, NOR, and NAND memories
- Clock, reset, and supply management
  + 32 kHz oscillator for RTC (with calibration function)
  + 32 kHz internal RC (with calibration function)
  + Low power consumption
  + Sleep, Stop, and Standby modes
  + VBAT supply for RTC, 20 x 32-bit backup registers, 4 KB backup (optional)
- Connectivity interfaces
  + USB 2.0 full-speed device/host/OTG controller (with on-chip PHY)
  + USB 2.0 high-speed/full-speed device/host/OTG controller (with dedicated DMA, on-chip full-speed PHY/ULPI)
  + 10/100 Ethernet MAC supporting IEEE 1588v2 hardware, MII/RMII (with dedicated DMA)
- Peripherals available on this product
  + UART bus
  + I2C bus
  + SPI bus
  + Up to 15 analog inputs, 2 analog outputs
  + 20 digital I/O pins, 14 PWM capable
  + SDIO for microSD card support
  + JTAG serial wire debug support
  + Selectable power source
  + Li-Po charging circuit
  + 3.3 V regulator
  + 128 Mbit SPI flash