GD32E230C6
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            CoreCortex-M23 
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            FamilyGD32E23x Series 
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            Sub-FamilyGD32E230 
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          CMSIS PackGD32E23x_DFP
GD32E230 - ARM Cortex-M23 Core
  Frequency up to 72 MHz
  Single-cycle multiplier and hardware divider
  NVIC support 16 internal, 28 external interrupts, each has 4 priority levels
Memories
  Flash size from 16KB to 64 KB
  SRAM size from 4KB to 8 KB with HW parity checking
  3KB ISP loader ROM
  1KB OTP byte
Low power management
  Power saving mode: sleep, deep-sleep, standby mode
  Independent battery supply for real-calendar RTC and backup register
Advanced analog peripherals
  1 x 12bit, 1us ADC (up to 10 chs)
Integrated peripherals interface
  Up to 2 x USART/UART/Irda/LIN/ISO7816
  Up to 2 x SPI (18Mbit/s)
  Up to 2 x I2C (400Kbit/s)
On-chip resources
  1 x 16 bit Advanced Timer, 1 x SysTick Timer, 5 x 16 bit GPTM, 1x 16bit basic Timer, 2 x WDG
  5-chs DMA support: Timers, ADC, SPIs, I2Cs, USARTs
  System supervisor and reset: POR,PDR,LVD
  80% GPIO available
  32-bit CRC, 96-bit unique ID
  On-chip clock: HSI (8MHz), LSI (40KHz)
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        Features Device GD32E230C6 
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          MemoryIRAM1 6 KiB IROM1 32 KiB