TK28C94 - Quad-UART

General 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.

Ordering Cross Reference

NXP	Tekmos	Package
SC28C94A1A	TK28C94A1A	PLCC-52
SC28C94C1A	TK28C94A1A	PLCC-52
SC26C94A1A	TK28C94A1A	PLCC-52
SC26C94C1A	TK28C94A1A	PLCC-52
SC26C94A1N	TK28C94A1N	PDIP-48
SC26C94C1N	TK28C94A1N	PDIP-48

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.

Request for Product Information

To request information on our TK28C94 - Quad-UART click this button:

Request Information

Minimum Order Quantity

We will continue to sell the TK28C94 parts with a MOQ of 100 units as long as we have inventory in stock. Once that inventory is gone, then minimum order quantities will increase to 5000 parts per order.

Documentation

The data sheet is available here: TK28C94

< Prev Next >

Microprocessors

Main Office

Tekmos, Inc.
14121 Highway 290 West
Building #15
Austin, TX 78737
Phone: (512) 342-9871