Product parameter<br> Model: STM32F103RET6<br> : ARM 32-bit -M3 CPU<br> Size: 50 x 50mm<br> Adjustment mode: JTAG/SWD<br> 1, ARM 32-bit -M3 CPU up to 72MHz. Operating frequency<br> 2, 512K bytes of program memory (ROM), 64K bytes of power 32KHz oscillator<br> 3, embedded factory calibrated 8MHz and 40KHz RC crystal oscillator, with calibration function of 32KHz oscillator<br> 4, power on/power off reset (POR/), programmable voltage detector (PVD)<br> 5, 2.0~3.6 volt power supply and 1/0 pin<br> 6, sleep, shutdown and standby mode, VBAT for backup mail (inch power supply)<br> 7, 2 12-bit analog converter, conversion time (up to 21 input channels) Conversion range: 0 to 3.6V, triple sampling and hold function, internal temperature sensor,<br> 8, 7-channel DMA controller, supported peripherals, timer, ADC , SPI, 12C and USART<br> 9, Serial single-line debugging (SWD) and JEAG interface, -M3 embedded tracking module ()<br> 10, 51 multifunctional bidirectional 1/0 port, 1/0 port can be mapped to 16 external interrupts, and almost all ports can tolerate 5V signals<br> 11, 3 general , 1 strengthening timer<br> 12, up to 2 12C interfaces (support SMBus/PMBus)<br> 13. Up to 3 USART interfaces<br> 14, up to 2 SPI interfaces (18M bits/second), 2 reusable<br> 15, CAN interface (2.0B active)<br> 16, USB 2.0 full speed interface<br> color: blue<br> Material: PC+metal<br> Different batches may have different appearance, which does not affect use.<br> Package Contents:<br> 1 x Development Board Module<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store