CH55X HDK

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Function Diagram


Selections guide

Type USB Footprint Space Basic Extra
CH551
  • USB control +tranceiver
  • USB Device
  • USB2.0+1.0
  • 64bytes buffer, FIFO, DMA
SOP-16
  • 10K ROM
  • 512b xRAM
  • 24Mhz
  • 3x Timer
  • 2x Signal
  • 2x PWM
  • 1x SPI M/S
  • 6x Touch
  • 1x HS UART
CH552
  • CH551
  • + TypeC Master/Slave Detect
  • TSSOP-20
  • SOP-16
  • MSOP-10
  • 16K ROM
  • 1K xRAM
  • 256b iRAM
  • 24Mhz
  • 3x Timer
  • 2x Signal
  • 2x PWM
  • 1x SPI M/S
  • 6x Touch
  • 2x HS UART
  • 4x 8bit ADC, CMP


CH554
  • CH551
  • + TypeC Master/Slave Detect
  • USB Host
  • + TypeC Charge Management
= CH552
  • 14K Code Flash
  • 128b DataFlash, byte R/W
  • 2K Bootloader, support USB/ISP
  • 1K xRAM
  • 256b iRAM
  • 24Mhz
  • 3x Timer
  • 2x Signal
  • 2x PWM
  • 1x SPI M/S
  • 6x Touch
  • 2x HS UART
  • 4x 8bit ADC, CMP
  • DMA
CH558
  • CH551
  • SSOP20
  • LQFP48
  • 32K Code Flash
  • 5K DataFlash
  • 3K Bootloader, support USB/ISP
  • 4K xRAM
  • 256b iRAM
  • 24Mhz
  • 4x Timer
  • 3x Signal
  • 1x PWM
  • 1x SPI M/S
  • 2x HS UART, UART1 FIFO, simulate 485
  • 8x 11bit ADC, CMP
CH559
  • USB HUB, 2x USB transceiver
  • Host & Device
  • USB 2.0
  • FAT12/FAT16/FAT32 U-disk
  • SSOP20
  • LQFP48
  • 60K Code Flash
  • 1K DataFlash
  • 3K Bootloader, support USB/ISP
  • 6K xRAM
  • 256b iRAM
  • 24Mhz
  • 4x Timer
  • 3x Signal
  • 3x PWM
  • SPI0 M/S, SPI1 M
  • 2x HS UART, UART1 FIFO, simulate 485
  • 8x 11bit ADC, CMP


SCH