Octal UART for 3.3 V and 5 V Supply Voltage

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製品詳細

ブロック図

SC28L198 Block Diagram

SC28L198 Block Diagram

Features

Key Features

  • Single 3.3V and 5V power supply
  • Eight Philips industry standard full duplex UART channels
  • Sixteen byte receiver FIFOs for each UART
  • Sixteen byte transmit FIFOs for each UART
  • In band flow control using programmable Xon/Xoff characters
  • Flow control using CTSN RTSN hardware handshaking
  • Automatic address detection in multi-drop mode
  • Three byte general purpose character recognition
  • Fast data bus, 30 ns data bus release time, 125 ns bus cycle time
  • Programmable interrupt priorities
  • Automatic identification of highest priority interrupt pending
  • Global interrupt and control registers ease setup and interrupt handling
  • IACKN and DACKN signal pins
  • Watch dog timer for each receiver (64 receive clock counts)
  • 1 MHz 1x and 16x data rates full duplex all channels.
  • Parity, framing and overrun error detection
  • False start bit detection
  • Line break detection and generation

Vectored Interrupts with Programmable Interrupt Vector Formats

  • Interrupt vector modified with channel number
  • Interrupt vector modified with channel number and channel type
  • Interrupt vector not modified

Programmable Data Formats

  • 5 to 8 data bits plus parity
  • Odd, even force or no parity
  • 1, 1.5 or 2 stop bits

Flexible Baud Rate Selection for Receivers and Transmitters

  • 22 fixed rates; 50 - 230.4K baud or 100 to 460.8K baud
  • Additional non-standard rates to 500K baud with internal generators
  • Two reload-counters provide additional programmable baud rate generation
  • External 1x or 16x clock inputs
  • Simplified baud rate selection

Programmable Channel Mode

  • Normal(full duplex)
  • Diagnostic modes
  • Automatic echo
  • Local loop back
  • Remote loop back

Four I/O ports per UART for Modem Controls, Clocks, RTSN, I/O

  • All I/O ports equipped with "Change of State Detectors"
  • Two global inputs and two global outputs for general purpose I/O
  • Power down mode
  • On chip crystal oscillator, 2-8 MHz
  • TTL input levels. Outputs switch between full VCC and VSS
  • High speed CMOS technology
  • 84 pin PLCC
  • 100 pin LQFP

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