MC68EN302PV20BT

Microprocessors Overview

The MC68EN302PV20BT is a microprocessor IC from the M683xx series, manufactured by NXP USA Inc. It features a CPU32+ core with a 32-bit bus width and operates at a frequency of 20 MHz. The device is housed in a 144-lead Thin Quad Flat Pack (TQFP) package. It integrates an Ethernet controller compliant with IEEE 802.3, supporting data rates up to 10 Mbps, and includes a DRAM controller. The operating voltage is 5.0V, and it supports a commercial temperature range of 0°C to 70°C.

Microprocessors Feature Summary

• Integrates an Ethernet controller fully compliant with IEEE 802.3 specifications, featuring dedicated transmit and receive FIFOs for automatic collision handling.
• Includes a DRAM controller that supports address multiplexing for external bus masters and provides programmable wait states.
• Retains the full complement of three Serial Communication Controllers (SCCs) from the standard MC68302 architecture.
• Supports dynamic bus sizing for 8-bit devices and is fully compliant with IEEE 1149.1 JTAG standards.

Microprocessors Applications

• Low-end bridge and router applications
• ISDN to Ethernet routers
• Remote access dial-in modems connecting to Ethernet LANs
• Industrial control systems
• Communication system control boards

Microprocessors Procurement Notes

Verify the specific suffix 'PV20' confirms the 20 MHz speed grade and 0°C to 70°C commercial temperature range. Ensure the TQFP package type matches the design requirements. Confirm RoHS compliance status as per current manufacturer documentation. Check for end-of-life or obsolescence notices given the product's introduction date. Validate pin compatibility if replacing older MC68302 variants.

Microprocessors Selection Notes

Select this component when a 68K-based solution requires integrated Ethernet and DRAM management without external glue logic. It is suitable for designs needing four serial interfaces (three SCCs plus Ethernet). Consider the 20 MHz speed limit and commercial temperature range against application demands. Evaluate the need for the specific 144-pin TQFP footprint during PCB layout planning.

Microprocessors Part Context

The MC68EN302 expands the MC68302 Integrated Multiprotocol Processor family by adding native Ethernet and enhanced DRAM capabilities. It maintains the standard 68302 programming model while providing additional resources for network connectivity. This integration reduces board complexity by combining communication protocols and memory control into a single silicon die.

Microprocessors Replacement Considerations

MC68EN302PV25 offers the same functionality at a 25 MHz speed grade within the same package and temperature range.