●CPU core: 32-bit CPU,the maximum frequency is 160MHz, the maximum 16KB 4-way ICache,can be configured as part of the common memory used by the CPU or other peripheral devices.
● Clock source: RC clock frequency is about 16mHz, LRC (low power RC) clock frequency is about 32KHz, HTC (low drift internal high frequency RC) clock frequency is 5MHz.
● Digital input and output: 8 programmable digital I/O pins, USBDP/DM can be configured as normal I/O pins, in general, IO support, pull-up (10k), pull-down (60k), strong Output, input and high impedance, up to 8 external interrupt/wake-up functions, power supply (low power consumption, available to any input, with hardware filter), input channel and output channel, provide arbitrary IO input and output options.
● Digital Peripherals: One full-speed USB1.1 speed, two UART controllers (UART0/1), UART1 supports DMA and flow control * Two SPI controllers with DMA (SPI0/1).
● Supports master and slave modes, built-in SPI flash, one SD host controller, two 16-bit asynchronous divider timers, one IIC controller, four-channel PWM output, 0.5 watt-class D audio amplifier output, infrared remote control Decoder, watchdog, 64-bit EFUSE.
● Analog peripherals: MIC amplifier circuit, two analog audio input channels, 10-bit high-precision
ADC, 16-bit high-precision ADC (mainly recording, 16-bit high-precision DAC, low-voltage protection power supply during reset;