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STM32 development board, is very rich in resources, and the STM32F103's internal resources to play to the extreme, almost all of the STM32F103 internal resources, can be in this development board verification, at the same time, the extended interface and abundant function module, the development board is very atmospheric. Dimensions is 11.2cm*15.6cm 

STM32 development board resources, as follows:
CPU: STM32F103ZET6, LQFP144, FLASH: 512K, SRAM: 64K
Expanding SRAM: IS62WV51216, 1M bytes
SPI FLASH: W25Q64, 8M bytes
A power indicator light (blue)
2 pieces of status indicator (DS0: red, DS1: green)
A infrared receiving head, and a small infrared remote controller
A EEPROM chip, 24C02, capacity of 256 bytes
A gravity acceleration sensor chip, ADXL345
A high performance audio codec chip, VS1053
A FM stereo transceiver chip, RDA5820
A 2.4G wireless module interface (NRF24L01)
1 road CAN interface, TJA1050 chip
1 road 485 interface, SP3485 chip
1 road RS232 interface, SP3232 chip
A game handle interface, directly inserted FC (NES) game handle
1 road digital temperature and humidity sensor interface, support DS18B20 /DHT11 etc
A standard 2.4/2.8/3.5 inch LCD interface, support for touch screen
A camera module interface
A USB serial port, used to download program and debugging code (USMART test)
A USB SLAVE interface, used in USB communication
An active buzzer
A FM transceiver antenna interface, onboard chip, and antenna
A CAN/USB interface
A SD card interface (support SPI/SDIO in the back of the board,)
A standard JTAG/SWD debugging download port
A VS1053 IIS output interface

A recording head (MIC/ microphone)
1 road stereo audio output interface
1 road stereo audio input interface
A group of 5V/3.3V power supply / access port
A DC power input interface (input voltage range: 9~12V)
A boot mode configuration interface
A RTC backup battery socket with battery
A reset button, used to reset the MCU and LCD
4 pieces of function buttons, wherein WK_UP both wake-up function
A capacitive touch key
Originality one-click download function
Except crystal occupied IO mouth, IO mouth all leads all the rest

Characteristics of ALIENTEK STM32 development board:
1) rich interface. The board provides a dozen of standard interfaces, convenient to carry out various peripherals experiment and development
2) flexible design. Board’s resource can be configured flexibly, to meet different conditions. We derive all IO except crystal occupied IO ports, greatly facilitate expansion and usage. In addition the onboard a download function, which can avoid the frequent set B0, B1 trouble, only through the development of 1 USB lines can reach STM32
3) rich resources. Expanding 1M bytes SRAM and 8M bytes FLASH, meet the large memory requirements and large data storage. The onboard MP3 and FM transceiver chip, entertainment and learning two not mistake. The onboard 3D acceleration sensor and various interface chip, meet various application needs
 4) humanization design. Each interface has a screen printing label, use stick out a mile; the position of the interface design of reasonable arrangement, convenient