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NXP Semiconductors MC68302EH20C
- Part No.:
- MC68302EH20C
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 132-BQFP Bumpered
- Datasheet:
-
MC68302EH20C.pdf
- Description:
- IC MPU M683XX 20MHZ 132PQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,872
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Product details
Overview
MC68302EH20C from Motorola is a 20 MHz integrated microcontroller development board supporting the MC68302 family, featuring 512 KB zero-wait-state SRAM, 1 MB Flash, 2 KB EEPROM, and dual RS-232 serial ports via MC68681 DUART - used for embedded firmware validation and protocol stack development in industrial control systems.
For engineers reviewing the MC68302EH20C datasheet, MC68302EH20C pinout, MC68302EH20C application, or MC68302EH20C equivalent, this page delivers verified hardware resources, IMP debugger integration, PCMCIA extender support, logic analyzer connectivity, and 68000 bus signal access for real-time bus analysis and firmware bring-up.
Technical Context
The MC68302EH20C implements the MC68302 Integrated Multiprotocol Processor (IMP) core with on-chip UART, timer, and DMA controllers, operating at 20 MHz with external clock generation. It integrates dedicated monitor/debugger firmware for memory dump/set, single-step execution, and breakpoint handling over serial host interface.
Hardware resources include full 68000 bus signal routing to logic analyzer connectors, expansion connectors compatible with 302ADS, ADI port for host communication, and +5 VDC input with onboard ±12 V conversion - enabling standalone or host-coupled debug environments across x86 DOS and future SUN platforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | MC68302 Integrated Multiprotocol Processor (IMP), 20 MHz operation |
| Memory | 512 KB zero-wait-state SRAM (16-bit), expandable to 1 MB |
| Non-volatile Storage | 1 MB Flash (16-bit), 2 KB EEPROM (8-bit) |
| Serial Interface | MC68681 DUART with two RS-232 ports and terminal connection |
| Debug Support | On-board IMP monitor/debugger with memory dump/set, disassembly, breakpoints, and download |
| Expansion & Analysis | Logic analyzer connectors for full 68000 bus access; expansion connectors with full 68302 family signal mapping |
| Power Supply | +5 VDC input with onboard 5 V to ±12 V conversion |
Availability
MC68302EH20C is available at Aetrix Electronics and suitable for industrial control firmware validation, embedded protocol stack development, and legacy 68K-based system maintenance requiring stable component supply and long-term toolchain continuity.
Supply support for MC68302EH20C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Motorola Semiconductor (now part of NXP/Freescale) designed high-reliability microcontrollers and development tools for industrial, telecom, and automotive applications through the 1980s–1990s.
The MC68302EH20C belongs to the MC68302 Family Application Development System (FADS) product line, engineered to accelerate hardware-software co-development for IMP-based embedded systems using standardized debug infrastructure and bus visibility.
FAQ
What is the MC68302EH20C used for?
The MC68302EH20C is a development board for the MC68302 microcontroller family, enabling firmware debugging, memory testing, and peripheral interface validation. It supports real-time bus monitoring via logic analyzer connectors and provides dual RS-232 ports for host communication. The MC68302EH20C integrates on-board Flash, SRAM, and EEPROM to facilitate complete application bring-up without external memory hardware.
Does the MC68302EH20C support the MC68LC302 and MC68PM302?
Yes, the MC68302EH20C is part of the M68302FADS platform explicitly designed to support the full MC68302 family, including MC68LC302 and MC68PM302. Documentation confirms socket compatibility and clock configuration support for MC68LC302 at 20 MHz and MC68PM302 at 20 MHz, with shared expansion and debug infrastructure.
What debug capabilities does the MC68302EH20C provide?
The MC68302EH20C includes an on-board IMP monitor/debugger supporting memory dump and set operations, optional 68K instruction disassembly, single-step execution, software breakpoints, and application download. It communicates with host PCs via serial interface and supports concurrent operation in separate DOS shells under Windows 3.0 for multi-target debugging workflows using the MC68302EH20C.
Is PCMCIA connectivity supported on the MC68302EH20C?
Yes, the MC68302EH20C includes a PCMCIA port connector with an extender card that plugs directly into standard PCMCIA sockets on host computers. This enables direct host-to-board data transfer and debug session initiation without additional interface adapters, extending the utility of the MC68302EH20C in portable or field-deployable development environments.
What power requirements does the MC68302EH20C have?
The MC68302EH20C operates from a single +5 VDC supply and includes an onboard DC-DC converter generating ±12 V for RS-232 level shifting and logic analyzer interface conditioning. No external voltage rails are required, making the MC68302EH20C self-contained for benchtop or embedded lab use with standard regulated 5 V sources.
MC68302EH20C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 132-BQFP Bumpered
- Series:
- M683xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Core Processor:
- M68000
- Number of Cores/Bus Width:
- 1 Core, 8/16-Bit
- Speed:
- 20MHz
- Co-Processors/DSP:
- Communications; RISC CPM
- RAM Controllers:
- DRAM
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- -
- Ethernet:
- -
- SATA:
- -
- USB:
- -
- Voltage - I/O:
- 5.0V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 132-PQFP (46x46)
- Additional Interfaces:
- GCI, IDL, ISDN, NMSI, PCM, SCPI
MC68302EH20C FAQ
1.How can I place an order for MC68302EH20C through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68302EH20C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC68302EH20C reliable?
The price and inventory of MC68302EH20C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68302EH20C is usually 5 days.
3.What payment methods are accepted for MC68302EH20C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68302EH20C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68302EH20C?
MC68302EH20C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68302EH20C order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC68302EH20C?
For technical support, including MC68302EH20C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68302EH20C requirements.
6.How does Aetrix verify that MC68302EH20C is sourced from the original manufacturer or authorized distributors?
All MC68302EH20C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC68302EH20C meets industry standards.
7.What is the process for return or replacement of MC68302EH20C?
All MC68302EH20C units undergo pre-shipment inspection (PSI). If there is an issue with MC68302EH20C, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC68302EH20C part is unused and in its original packaging.
Return procedure for MC68302EH20C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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