PCB-STM32-F3U Development baseboard for the STMicro Discovery-F3 module (STMicro part STM32F3DISCOVERY) Part Number: PCB-STM32-F3U (unpopulated PCB with Discovery module sockets, no other parts) STM32-F3U (assembled board, not presently available) Features STM32-F3U is a breakout board for the STMicro Discovery F3 board with STM32F303 microcontroller (256k program flash, 48k RAM, DSP, and floating point instructions). Eleven GPIO port headers providing 8 data bits and 3V/5V power. Four UEXT connector footprints provide UART, I2C, and SPI signals on 10-pin headers. Use 10-pin ribbon cables to connect to UEXT peripheral boards. Bare PCB with two 2x25 DIL sockets provided for STMicro Discovery-F3 module. No other parts provided. BOM and schematic available for download. Mostly thru-hole construction allows for easy assembly. 4-layer, FR4 glass-epoxy PCB, 1oz/ft2 copper. Soldermask & silkscreen. Lead free and RoHS compatible. 3.94 x 6.30in (100 x 160mm). BusBoard Prototype Systems - Built for designers www.BusBoard.com sales busboard.com DOC-DAT-(PCB-STM32-F3U)-0001 Rev 1.00 Datasheet.doc Details The STM32-F3U breakout board provides port connectors and UEXT expansion headers to make it easy to prototype with the ST Micro Discovery F3 board. The Discovery F3 module includes a STM32F303VCT6 microcontroller with 256k program flash, 48k RAM, and a floating-point/DSP unit in a LQFP100 package. An on-board ST-LINK/V2 programmer allows code to be loaded and debugged via PC USB port. Accelerometer, compass, and gyroscope peripherals are provided. Eleven 2x8 headers are used for GPIO port expansion. Each header has 8 data bits, 3V power, 5V power, ground, and 5 uncommitted pins for customization. Four Olimex style UEXT 2x5 header are used for peripheral expansion. UEXT is an open standard developed by Olimex providing 3 Volt I2C, SPI, and USART signals on one connector. A 10-pin ribbon cable is used to connect to UEXT peripheral boards. Power comes from the Discovery board USB connector. BusBoard Prototype Systems - Built for designers www.BusBoard.com sales busboard.com DOC-DAT-(PCB-STM32-F3U)-0001 Rev 1.00 Datasheet.doc