5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 64-byte FIFOs and 68 mode uP interfac


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Block Diagram

Block diagram: SC68C752BIB48, SC68C752BIBS


  • Dual channel with 68 mode (Motorola) µP interface
  • Up to 5 Mbit/s data rate
  • 64-byte transmit FIFO
  • 64-byte receive FIFO with error flags
  • Programmable and selectable transmit and receive FIFO trigger levels for DMA and interrupt generation
  • Software/hardware flow control
    • Programmable Xon/Xoff characters
    • Programmable auto-RTS and auto-CTS
  • Optional data flow resume by Xon any character
  • DMA signalling capability for both received and transmitted data
  • Supports 5 V, 3.3 V and 2.5 V operation
  • 5 V tolerant on input only pins1
  • Software selectable baud rate generator
  • Prescaler provides additional divide-by-4 function
  • Industrial temperature range (-40 ℃ to +85 ℃)
  • Fast data bus access time
  • Programmable Sleep mode
  • Programmable serial interface characteristics
    • 5-bit, 6-bit, 7-bit, or 8-bit characters
    • Even, odd, or no parity bit generation and detection
    • 1, 1.5, or 2 stop bit generation
  • False start bit detection
  • Complete status reporting capabilities in both normal and Sleep mode
  • Line break generation and detection
  • Internal test and loopback capabilities
  • Fully prioritized interrupt system controls
  • Modem control functions (CTS, RTS, DSR, DTR, RI, and CD)


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