MC68302AG16C

The MC68302AG16C is a one-chip microprocessor optimized for networking and communications products. It integrates an industry-standard MC68000/MC68008 core with a dedicated communications processor (RISC CPM) and a system integration block (SIB) to provide a compact, programmable communications engine.

Typical use cases include ISDN equipment, data concentrators, modems, line cards, bridges and gateways where on-chip communications controllers, serial interfaces and DMA support concurrent multi-protocol operation while simplifying board-level design. The device operates at 16 MHz, uses a 5 V I/O domain and is supplied in a 144-LQFP surface-mount package suitable for commercial temperature applications (0 °C to 70 °C).

Key Features

• Core  MC68000/MC68008 microprocessor core with the option to disable the CPU logic to use the IMP as a peripheral.
• Communications Processor (CP)  Integrated RISC CPM handling communications tasks with a main controller and dedicated resources for multi-protocol operation.
• Serial Controllers  Three full-duplex Serial Communications Controllers (SCCs) and two Serial Management Controllers (SMCs) for IDL and GCI channels, supporting protocols such as HDLC/SDLC, Bisync, UART, DDCMP, Totally Transparent and V.110.
• Serial DMA and Buffering  Six serial DMA channels dedicated to the SCCs and the capability to send/receive up to eight buffers/frames without M68000 core intervention.
• On-chip Memory and DMA  On-chip 1152‑byte dual-port RAM plus an independent Direct Memory Access (IDMA) controller for efficient data movement.
• System Integration  Parallel I/O ports (some with interrupt capability), an interrupt controller with two modes, three timers including a software watchdog, four programmable chip-select lines with wait-state logic, and programmable address mapping for dual-port RAM and IMP registers.
• DRAM and Clock Support  On-chip DRAM refresh controller and an on-chip clock generator with an output clock signal.
• Reliability and Debug  Hardware watchdog for monitoring bus activity, low-power (Standby) modes, disable-CPU logic, and freeze control for debugging selected on-chip peripherals.
• Package and Electrical  144-LQFP (20×20 mm) surface-mount package, 5 V I/O, 16 MHz operating frequency, operating temperature 0 °C to 70 °C.
• Development Support  Strong third-party tools support noted for the MC68302 series.

Typical Applications

• ISDN Equipment  Supports interfaces and configuration options suitable for ISDN basic rate and terminal adapter applications.
• Data Concentrators  Integrated serial controllers, DMA channels and on-chip RAM enable efficient aggregation and protocol handling.
• Modems and Line Cards  Multi-protocol SCC support and dedicated communications processing simplify modem and line-card implementations.
• Network Bridges and Gateways  Concurrent protocol operation and flexible serial interfaces (IDL, GCI, PCM, NMSI) support bridge and gateway functions.

Unique Advantages

• Highly integrated single-chip solution: Combines MC68000/MC68008 core, communications processor and system integration block to reduce external components and simplify board design.
• Multi-protocol communications: Native support for HDLC/SDLC, Bisync, UART, DDCMP, Totally Transparent and V.110 enables flexible protocol implementations.
• Efficient data handling: Six serial DMA channels plus on-chip dual-port RAM allow sustained data throughput with minimal CPU intervention.
• Flexible physical interfaces: SCC-accessible interfaces such as IDL, GCI, PCM and NMSI provide options for inter-chip and telecommunication links.
• Robust system features: Built-in timers, interrupt controller modes, DRAM refresh and hardware watchdog support reliable, real-time operation.
• Surface-mount packaging: 144-LQFP (20×20 mm) package and standard 5 V I/O simplify assembly for commercial embedded products.

Why Choose MC68302AG16C?

The MC68302AG16C positions itself as a compact, integrated processor tailored for networking and communications designs that need on-chip serial controllers, DMA and system integration features. With an MC68000-class core coupled to a dedicated communications controller, the device enables concurrent protocol handling while reducing external component count.

This part is suited for engineering teams building ISDN equipment, data concentrators, modems, line cards, bridges and gateways who require a programmable communications engine with established third-party tool support. The 16 MHz device, supplied in a 144-LQFP surface-mount package and compliant with RoHS, offers a balanced combination of integration, functionality and supplier ecosystem support.

Request a quote or submit a procurement inquiry to receive pricing and availability for the MC68302AG16C. Our team can provide lead-time information and assist with technical questions to help evaluate the device for your design.