TS68C429AMR

Controllers Overview

The TS68C429AMR is a high-performance, multi-channel ARINC 429 controller manufactured by Atmel (now Microchip Technology). It features eight independent receiver channels and three independent transmitter channels, designed for integration with 16-bit or 32-bit microprocessors, particularly the TS68K family. The device operates on a single +5V power supply with a maximum operating frequency of 20 MHz. It supports all standard ARINC 429 data rates up to 2.5 Mbit/s and includes programmable parity control, label filtering via a 256x1 bit matrix per channel, and an 8-message FIFO per transmitter. The component is housed in a PGA-84 package and complies with MIL-STD-883 Class B screening standards.

Controllers Feature Summary

• Provides eight independent ARINC receiver channels and three independent transmitter channels for simultaneous parallel operation.
• Features direct compatibility with the TS68K family microprocessor interface using a 16-bit data bus.
• Includes integrated self-test capabilities for receiver label memories and transmitter FIFOs to verify memory integrity.
• Supports vectored interrupts with daisy-chain capability and programmable priority levels for receiver channels.

Controllers Applications

• Avionics system modifications integrating radar, inertial navigation, and GPS into multifunction displays.
• High-density ARINC 429 communication interfaces requiring multiple channels without excessive CPU interrupt overhead.
• Time-division multiplexed serial data communication systems compatible with ARINC 2429 interface standards.

Controllers Procurement Notes

Verify that the ordering suffix 'MR' corresponds to the specified ceramic PGA-84 package variant. Confirm compliance requirements against MIL-STD-883 Class B specifications. Ensure the source documentation explicitly identifies the manufacturer as Atmel or its successor entity within the Microchip portfolio. Validate that the specific revision level matches the design requirements for the target embedded application.

Controllers Selection Notes

Select this component when designing systems requiring eight receive and three transmit ARINC 429 channels. It is suitable for applications needing direct interfacing with TS68K processors or similar asynchronous buses. Consider the 20 MHz operating limit and 5V supply requirement. Evaluate thermal management needs given the 400 mW power dissipation specification. Ensure external logic is available if TTL level compatibility is required for specific interface signals.

Controllers Part Context

The TS68C429A serves as an enhanced ARINC 429 controller, succeeding the EF 4442 model. It consolidates functionality previously requiring multiple discrete chips, reducing board space and power consumption. The device is part of the high-reliability HIREL series, specifically screened for aerospace and defense environments. Its architecture allows for significant reduction in CPU interrupt load compared to traditional two-receive-one-transmit solutions.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Microchip or Atmel resources for cross-reference information regarding legacy replacements or pin-compatible alternatives.