MC68EN302PV25BT

The MC68EN302PV25BT is an NXP Semiconductors M68000-based microprocessor IC featuring an integrated multiprotocol architecture with on-chip Ethernet and DRAM controllers. It implements a single M68000 core with an 8/16-bit bus interface and operates at 25 MHz.

Designed for embedded systems that require integrated communications and memory control, the device combines Ethernet MAC functionality, a DRAM controller, DMA channels and communications co-processing to simplify system design and reduce external component count.

Key Features

• Core & Performance  M68000 core microcoded communications controller with a single 8/16-bit core running at 25 MHz and 5 V I/O.
• Memory & DMA  On-chip DRAM controller with support for dynamic RAM and a dual-port RAM (1,152 bytes) plus multiple DMA channels (including dedicated Ethernet DMA channels) to streamline data transfers.
• Ethernet Subsystem  Integrated Ethernet controller compliant with IEEE 802.3, 16-bit interface to the 68000 bus, separate 128-byte FIFOs for transmit and receive, and support for up to 10 Mbps (20 Mbps full-duplex) operation with on-chip retransmission and collision handling.
• Peripheral & Communications  Communications-focused peripherals including three SCCs, additional serial channels, a RISC CPM communications co-processor and GCI interface for flexible protocol handling.
• System Control & Test  IEEE 1149.1 JTAG boundary-scan support for board-level test and debug.
• Package & Environmental  144-LQFP package (20 × 20 mm), surface-mount mounting type, RoHS compliant, and rated for an operating temperature range of 0 °C to 70 °C.

Typical Applications

• Embedded networking equipment  Integrated Ethernet MAC, DMA and buffer management make the device suitable for network interface modules and protocol converters handling 10 Mbps Ethernet links.
• Multiprotocol communications systems  Built-in communications co-processor, SCCs and serial channels enable offloading and management of multiple serial and protocol interfaces.
• Memory-rich embedded controllers  On-chip DRAM controller and dual-port RAM support designs that require local buffering and system DRAM control without extra external logic.

Unique Advantages

• Highly integrated feature set: Combines M68000 core, Ethernet MAC, DRAM controller and DMA channels to reduce external components and simplify board design.
• Ethernet offload and reliability: Dedicated Ethernet DMA channels, on-chip FIFOs and automatic retransmission/flush mechanisms reduce processor bus bandwidth requirements and simplify frame handling.
• Flexible memory interfacing: Glueless DRAM controller design and support for dynamic bus sizing accommodate a range of DRAM configurations and external bus masters.
• Built-in testability: IEEE 1149.1 JTAG compliance enables boundary-scan test and simplifies production test and diagnostics.
• Vendor-backed platform: NXP Semiconductors MC68 series product with an established programming model and integrated peripheral set for communications-focused embedded designs.

Why Choose MC68EN302PV25BT?

The MC68EN302PV25BT positions itself as a compact, integrated solution for embedded systems that require combined CPU, Ethernet and DRAM control in a single 144-LQFP package. Its M68000 core, communications co-processor, dedicated Ethernet DMA and on-chip memory resources deliver a cohesive platform for designers focused on embedded networking and multiprotocol communications.

This part is well suited to projects where integration, predictable performance at 25 MHz, and simplified board-level design matter. With on-chip buffering, hardware support for Ethernet frame handling and standard debug/test support, the MC68EN302PV25BT offers a practical option for embedded designs requiring integrated Ethernet and DRAM control.

Request a quote or submit a product inquiry for MC68EN302PV25BT to receive pricing, availability and technical support information.