... (LQFP144-pin, on-chip integrated 512K flash, 64KRAM, 12Bit A / D, D / A; PWM, CAN, USB, SDIO, FSMC and other resources)* Outside ... leads to ADC input terminals* Two-way terminal block PWM output leads* Two-way leads to DAC output terminals* A buzzer, the five ... users LED lights, a power indicator light, a USB communication indicator, four user ...