GD32F207ZK
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            CoreCortex-M3, 120 MHz 
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            FamilyGD32F20x Series 
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            Sub-FamilyGD32F207 
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          CMSIS PackGD32F20x_DFP
GD32F207 - ARM Cortex-M3 Core
          Frequency up to 120 MHz
          Flash access zero wait state
          Single-cycle multiplier and hardware divider
        Memories
          Flash size from 256 KB to 3072 KB
          SRAM size is 256 KB with HW parity checking
          18 KB ISP loader ROM
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        Features Device GD32F207ZK 
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          MemoryIRAM1 256 KiB IROM1 3 MiB