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TK28C94 - Quad UART

Features

  • Contains 4 industry standard UARTS.

  • 8 bit transmit / receive FIFOs for each UART.

  • Programmable data formats
    • 5, 6, 7 or 8 data bits.
    • Even, odd, one, zero, or no parity.
    • 1, 1.5 or 2 stop bits.

  • Programmable baud rates
    • 23 Fixed rates
    • User definable rates from internal counter.
    • External 1X or 16X clock.
    • Separate transmit and receive baud rates.

  • Parallel ports for modem status and control functions.

  • 0.35u technology supports up to 3 MB operation (50 MHz clock).
    • Enhanced performance.
    • Digital input filter for noise suppression.
    • False start bit rejection.
    • General purpose scratch register.
    • Framing error detection and recovery.
    • Break generation and detection.
    • Overrun detection
    • Parity error detection
    • Multiple loopback modes

  • Advanced interrupt controller.
    • Programmable priorities
    • Vectored interrupts

  • Available in 52 pin PLCC.

  • RoHS Compliant.

Description

The TK28C94 is a replacement for the Philips SC28C94. It may also be used to replace the SC68C94 and the SC26C94.

The TK28C94 consists of 4 identical UARTS, organized as two groups of two. Each group contains a timer/counter which may be used for additional baud timings or for watchdog functions. Parallel ports are provided for modem control. An independent baud rate generator provides 23 different fixed baud rates. A programmable interrupt controller prioritizes all of the interrupt sources, and provides an interrupt vector for a low-overhead interrupt service routine.

Data Sheet

The data sheet for the TK28C94 is available here.

Ordering

The TK28C94 can be ordered directly from Tekmos.

Volume production orders can be delivered within 12 weeks after the receipt of an accepted order. However, most orders are shipped on receipt.

Here is the pricing schedule for the TK28C94.

 
Quantity TK28C94
52PLCC
1 - 9 $16.19
10 - 19 $15.45
20 - 49 $14.84
50 - 99 $14.17
 
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