Features

• • 8-bit Turbo 8052 compatible CPU with 24 MHz operating frequency
    
  • 6 MHz, 12 MHz or 24 MHz crystal oscillator (selectable by S/W)
    
  • Internal 48 MHz RC oscillator: auto-calibration by the DP DM signals can be selected by the firmware
    
  • 32 kHz RC Ring Clock for off line and low power mode
    
  • 16K bytes Flash ROM including EEPROM emulation
    

  - All pages of Flash ROM could be used (by page) as data storage
  

  - Each page is 512-byte
  

  • 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
  

  - 3 Generic endpoints (IN/OUT INT/Bulk programmable) each with 64-Byte (8/16/32/64 bytes programmable) FIFO; Endpoint 3 can also be configured as OUT token for endpoint 1 or 2
  

  - Supports USB Suspend, Resume and Remote Wakeup
  

  • 19-channel 12-bit ADC with external reference voltage input
    
  • 3-ch 8-bit PWM output
    
  • Idle and power down modes supported
    
  • Standard RS232 data transmission: up to 230400bps
    
  • 1 SPI interface
    

  - Master mode selectable
  

  - Max speed: 6 MHz
  

  - Data length per transaction: 1-byte
  

  • 1 I²C interface
    

  - Master/Slave mode selectable
  

  - Max speed: 400 kHz
  

  - Data length per transaction: 1-byte
  

  • 45 (max.) GPIO pins for chip form and LQFP64 & 21 (max.) GPIO pins for QFN32
    
  • USB-related circuit and V33 voltage regulator can be disabled for portable applications which are powered by battery (VBAT <= 3.6V)
    
  • 16 high sink current IO for LED control: Port A and Port E
    
  • IO falling or rising edge detect interrupt, can work as wakeup trigger at the power down mode: Port A
    
  • Three 16-bit timer/counter
    
  • Watch-dog timer (10ms to 640ms programmable)
    
  • ISP function by 6-pin I2C (VDD5V, VSS, OSCI, RESETN, SCL, SDA pins) or USB interface
    
  • On-chip ICE
    
  • Operating voltage:
    

  - Whole system (except USB and regulator) working voltage: 2.4V to 3.6V (from VBAT pin)
  

  - USB and regulator working voltage: 4.0V to 5.25V (from VDD5V pin)
  

  - Please refer to Chapter 6 (Application Circuits) for versatile applications
  

  • LQFP64 (7mmx7mm), QFN32 (5mmx5mm) and Chip form