GD32F105

        
    GD32F105xx Main Features
    ARM ® CortexTM-M3 core
    ●    Frequency up to 108 MHz
    ●   Single-cycle multiplier and hardware divider
        NVIC support 16 internal and 43 external interrupts, each interrupt has 16 priority levels
    Flash memory
     ●   Flash up to 1024 KB
     ● SRAM up to 96 KB
     ●  2KB ISP loader ROM
    Low-power management
     ●  Support power saving mode: sleep, deep-sleep and standby mode
     ●  Independent battery supply for RTC and backup register
    High performance analog peripherals
     ●  3 x 12bit, 1μs ADC (16 channels)
     ●  2 x DAC
    Integrated peripherals interface
    ●    Up to 5 x USART/Irda/LIN/ISO7816
    ●    Up to 3 x SPI (18Mbit/s)
    ●    Up to 2 x I2C (400Kbit/s)
    ●    USB OTG 2.0 FS
    On-chip resources
     ●   1 x SysTick Timer, up to 10 x GPTM, 2 x Basic Timer, 2 x WDT, 7-chs DMA supported: timers, ADC, SPIs,I2Cs and USARTs
    ●   POR,PDR and LVD
    ●    80% available GPIO
    ●    32 bit CRC
    ●   Clock: HSI (8MHz) and LSI (40KHz)
    ●   External Memory Control supported: SRAM, PSRAM, NOR-Flash, LCD, NAND Flash