Features

• • 8-bit Turbo 8052 compatible CPU with 24MHz operating frequency
    
  • 12MHz or 24MHz crystal oscillator (selectable by S/W)
    
  • 32kHz RC Ring Clock for off line and low power mode
    
  • 8K bytes OTP ROM
    
  • 512 bytes SRAM
    
  • USB features:
    

  - Complete compatible with Universal Serial Bus specification 2.0 Full / Low Speed
  

  - 1 control endpoint, IN/OUT each with 64 Bytes (8/16/32/64-byte programmable) FIFO
  

  - 5 Generic endpoints (IN/OUT INT/Bulk programmable) each with 64-Byte (8/16/32/64 bytes programmable) FIFO; Endpoint 5 can also be configured as OUT token for endpoint 1 or 2
  

  - Supports USB Suspend, Resume and Remote Wakeup
  

  • Idle and power down modes supported
    
  • Standard RS232 data transmission
    
  • 1 SPI interface
    

  - Master/Slave mode selectable
  

  - Max speed: 2MHz
  

  - Data length per transaction: 1-byte
  

  • 1 I²C interface
    

  - Master mode only
  

  - Max speed: 800kHz
  

  • 3 high sink current IO for LED control
    
  • Totally 15 GPIO pins (max)
    
  • IO falling edge detect interrupt, can work as wakeup trigger at the power down mode
    
  • Supports power-on reset and low-voltage reset
    
  • Three 16-bit timer/counter
    
  • Watch-dog timer (10ms ~ 640ms programmable)
    
  • 6-pin ISP Function (VDD, VSS, VPP, RESETN, PB0/ISP_SCL, PB1/ISP_SDA pins are used)
    
  • OTP Memory Read Protect