Fangrui Product Details Main Control Module:su-03t Power Supply Interface:type-c Interface Or Pin Header Power Supply Voltage:5v Power Supply Current: 500ma Output Voltage:5v Or 3.3v, 5v Inside The Chip To 3.3v, 3.3v External Load Does Not Exceed 150ma Pin Voltage:3.3v Power Consumption:average Working Current 60ma Speaker Specifications:vcc5v 8ohm 3w Supported Interfaces:uart/gpio/adc/pwm/spi/12s/12c All Gpios Can Be Configured As External Interrupt Inputs And Wake-up Sources 1 Standard Spi Interface, High Speed 30mhz 1 Full-duplex Uart Maximum Speed 3mbps, Serial Port Voltage 3.3v 1 12c Master/slave Controller Maximum Speed 400khz 2 Pwm Outputs 1 12-bit Sar-adc Maximum 450khz Sampling Rate 32-bit Risc Core, Running Frequency 240m Support Instruction Set And Fpu Floating Point Unit Accelerator: Maximum Support 1024-point Complex /ifft Operation, Or 2048-point Real /ifft Operation Built-in High-speed , Built-in 2mb Flash Built-in 2.4w, Single-channel Class Ab Amplifier Built-in Por (power On Reset), Low Voltage Detection And