技术特性

• Clock, reset and supply management
  • Low voltage reset
  • Halt power saving mode
  • PLL for generating 48 MHz USB clock using a 4 MHz crystal
• USB (Universal Serial Bus) interface
  • USB 2.0 compliant
  • CCID V1.0
  • Full speed, hubless
  • Bus-powered, low consumption
• Serial RS232 interface
  • Transmission rate: 9.6 Kbps to 115 Kbps
  • Format: 8-bit, no parity
  • Auto baud rate
  • CCID V1.0 on serial TTL link
• ISO 7816-3 UART interface
  • 4 Mhz clock generation
  • Synchronous/Asynchronous protocols (T=0, T=1)
  • Automatic retry on parity error
  • Programmable baud rate from 372 to 11.625 clock pulses (D=32/F=372)
  • Card insertion/removal detection
• Smartcard power supply
  • Selectable card VCC: 1.8 V, 3 V, and 5 V
  • Internal Step-up converter for 5V supplied Smartcards (with a current of up to 55mA) using only two external components.
  • Programmable smartcard internal voltage regulator (1.8 to 3.0 V) with current overload protection and 4 kV ESD protection (Human Body Model) for all smartcard interface I/Os
• Development tools
  • Application note on PCB recommendations and component bill of materials
  • Full hardware/software kit for performance evaluation

功能框图