<p>Product parameter</p> <p>Model: STM32F103RET6</p> <p>: ARM 32-bit -M3 CPU</p> <p>Size: 50 x 50mm</p> <p>Adjustment mode: JTAG\/SWD</p> <p>1, ARM 32-bit -M3 CPU up to 72MHz. Operating frequency</p> <p>2, 512K bytes of program memory (ROM), 64K bytes of power 32KHz oscillator</p> <p>3, embedded factory calibrated 8MHz and 40KHz RC crystal oscillator, with calibration function of 32KHz oscillator</p> <p>4, power on\/power off reset (POR\/), programmable voltage detector (PVD)</p> <p>5, 2.0~3.6 volt power supply and 1\/0 pin</p> <p>6, sleep, shutdown and standby mode, VBAT for backup mail (inch power supply)</p> <p>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,</p> <p>8, 7-channel DMA controller, supported peripherals, timer, ADC , SPI, 12C and USART</p> <p>9, Serial single-line debugging (SWD) and JEAG interface, -M3 embedded tracking module ()</p> <p>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</p> <p>11, 3 general , 1 strengthening timer</p> <p>12, up to 2 12C interfaces (support SMBus\/PMBus)</p> <p>13. Up to 3 USART interfaces</p> <p>14, up to 2 SPI interfaces (18M bits\/second), 2 reusable</p> <p>15, CAN interface (2.0B active)</p> <p>16, USB 2.0 full speed interface</p> <p>color: blue</p> <p>Material: PC+metal</p> <p>Different batches may have different appearance, which does not affect use.</p> <p>Package Contents:</p> <p>1 x Development Board Module</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>