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NXP Semiconductors MC68340FE25E
- Part No.:
- MC68340FE25E
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 144-BCQFP
- Datasheet:
-
MC68340FE25E.pdf
- Description:
- IC MPU M683XX 25MHZ 144CQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,792
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Product details
Overview
MC68340FE25E from Freescale Semiconductor (formerly Motorola) is a 32-bit integrated processor with on-chip CPU32 core, DMA controller, serial module, dual timer modules, and system integration module - operating at 25 MHz with 5 V supply, 16-bit data bus, and 32-bit address bus. It targets industrial control, communications equipment, and embedded instrumentation requiring deterministic real-time response and peripheral integration.
For engineers reviewing the MC68340FE25E datasheet, MC68340FE25E pinout, MC68340FE25E application, or MC68340FE25E equivalent, key selection criteria include its 25 MHz clock rating, 5 V operation, integrated DMA for memory-to-peripheral transfers, IEEE 1149.1 JTAG test access, and support for external bus arbitration in multi-master systems.
Technical Context
The MC68340FE25E implements the CPU32 core - a superset of the M68000 instruction set with enhanced addressing modes, loop mode execution, and low-power STOP instruction. Its System Integration Module (SIM) integrates clock synthesis, chip select generation, interrupt handling, periodic timer, watchdog, and external bus interface with programmable wait states.
It features a two-channel DMA controller supporting burst and single-cycle transfers, a dual-channel serial module (UART/HDLC-compatible), and two independent 16-bit timer modules with input capture, output compare, and pulse-width modulation capability - all mapped into a unified register space accessible via the CPU32's 32-bit address bus.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Clock Frequency | 25 MHz maximum - defines real-time throughput limit for CPU32 execution and peripheral timing accuracy. |
| Supply Voltage | 5.0 V ±10% - requires standard TTL-compatible power rail; no internal voltage regulation. |
| Data Bus Width | 16-bit - supports efficient word-aligned memory and peripheral access; compatible with common SRAM/ROM interfaces. |
| Address Bus Width | 32-bit - enables linear addressing up to 4 GB; actual usable space constrained by external bus interface logic. |
| DMA Channels | 2 independent channels - enables concurrent memory-to-peripheral transfers without CPU intervention. |
| Timer Modules | 2 × 16-bit timers - each supports input capture, output compare, PWM, and gate-controlled counting for motor control or signal measurement. |
| Serial Interface | Dual asynchronous serial channels (A/B) - configurable as UART or HDLC; includes RTS/CTS flow control and transmitter/receiver ready signals. |
Pinout & Package
MC68340FE25E is housed in a 132-pin Ceramic Quad Flat Pack (CQFP) package with 0.635 mm lead pitch, designed for high-reliability industrial and avionics applications. Thermal and mechanical data confirm JEDEC MS-026AC compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A23–A0 | Address Bus Outputs | Lower 24 bits of 32-bit address bus; A31–A24 are multiplexed with data bus in multiplexed mode. |
| D15–D0 | Data Bus I/O | 16-bit bidirectional data path; shares pins with upper address bits in multiplexed bus configuration. |
| AS | Address Strobe | Indicates valid address on bus; used by peripherals to latch address before data phase. |
| DS | Data Strobe | Signals valid data on D15–D0; synchronizes read/write transfers with external memory/peripherals. |
| R/W | Read/Write Control | Active-high for write, active-low for read; determines direction of data transfer on D15–D0. |
| IRQ7–IRQ3 | Interrupt Request Inputs | Five-level vectored interrupt inputs; support priority-based servicing with autovectoring capability. |
| TCK/TMS/TDI/TDO | JTAG Test Access Port | IEEE 1149.1 boundary-scan interface for production testing and debug visibility. |
Key Features
| Feature | Design Value |
|---|---|
| CPU32 Core | 32-bit architecture with M68000 compatibility, loop mode acceleration, and low-power LPSTOP instruction for deterministic sleep/wake cycles. |
| Integrated DMA | Two-channel controller supporting scatter-gather transfers and automatic address increment/decrement - offloads CPU during bulk data movement. |
| System Integration Module (SIM) | Unified configuration block for clock synthesis, chip selects, interrupt vectors, watchdog, and periodic timer - reduces external glue logic. |
| Dual Serial Channels | Independent UART/HDLC-capable modules with full modem control (RTS/CTS) and status signaling (T≈RDYA/R≈RDYA) for robust protocol handling. |
| Timer Modules | Two 16-bit timers with input capture, output compare, and PWM output - enable precise timing for motor commutation or pulse measurement. |
Applications
| Industrial PLC Controller | Telecom Line Card |
|---|---|
Use Scenario: Real-time ladder logic execution and I/O scanning in programmable logic controllers with analog/digital field interface. IC Role / Device Role / Timing Role: Central processing unit with integrated peripherals managing scan cycle timing, serial communication to HMI, and timer-based motion control outputs. Use Value: Eliminates need for external DMA and timer ICs; 25 MHz CPU32 ensures sub-millisecond scan times with deterministic interrupt latency. | Use Scenario: Protocol bridging and framing in T1/E1 line interface cards requiring HDLC framing and channelized data handling. IC Role / Device Role / Timing Role: Embedded controller handling bit-level framing, CRC calculation, and time-slot mapping using serial module and DMA. Use Value: Dual serial channels and DMA enable simultaneous receive/transmit framing without CPU overhead; 16-bit data bus matches standard telecom memory interfaces. |
| Motor Drive Controller | Test Equipment Platform |
Use Scenario: Closed-loop servo control in brushless DC motor drives requiring PWM generation, encoder input capture, and current sensing interface. IC Role / Device Role / Timing Role: Real-time motion controller using timer modules for PWM output and quadrature decode, plus serial port for host command interface. Use Value: Two independent 16-bit timers provide synchronized PWM and encoder timing with <1 µs jitter; integrated SIM simplifies clock tree design. | Use Scenario: Automated test system main controller coordinating multiple instrument interfaces, digital I/O, and waveform generation. IC Role / Device Role / Timing Role: Host processor managing GPIB/RS-232 communication, pattern generation via parallel port, and timestamping via periodic interrupt timer. Use Value: On-chip periodic timer and software watchdog ensure reliable long-duration test sequences; JTAG port enables in-system debug and calibration verification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar integrated processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68332CFN16 | 16 MHz CPU32 core, no DMA, single serial channel, 112-pin PQFP package. | Limited to lower-throughput control tasks; lacks DMA for high-bandwidth peripheral interfacing. | Select when cost-sensitive designs tolerate reduced speed and peripheral count, and PCB layout favors smaller PQFP footprint. |
| MC68360EM25C | 25 MHz integrated communications processor (CPM), dual SCCs, Ethernet MAC, 208-pin PQFP. | Targeted at networking applications; adds Ethernet and advanced serial protocols but increases complexity and power. | Select when Ethernet connectivity or multiple synchronous serial interfaces (e.g., HDLC, SDLC) are required alongside CPU32 execution. |
Compared with MC68340FE25E, MC68332CFN16 offers lower cost and smaller footprint but sacrifices DMA and serial flexibility, while MC68360EM25C adds networking capabilities at the expense of higher integration complexity and thermal management requirements.
Availability
MC68340FE25E is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, motor control, and test equipment requiring stable component supply and long-term obsolescence management.
Supply support for MC68340FE25E 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
Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of embedded processors and analog/mixed-signal ICs, founded from Motorola's semiconductor division.
The MC68340 belongs to the M68300 family of integrated microcontrollers targeting real-time industrial and communications applications where peripheral consolidation, deterministic timing, and legacy M68000 software compatibility are critical.
FAQ
What is the maximum operating frequency of the MC68340FE25E?
The MC68340FE25E is rated for a maximum clock frequency of 25 MHz, as confirmed by its suffix "E25" and electrical characteristics in the Freescale MC68340UM/AD datasheet. This frequency applies to the CPU32 core, DMA controller, and all on-chip peripherals. Operation above 25 MHz violates specification limits and may result in timing violations or undefined behavior.
Does the MC68340FE25E support JTAG debugging?
Yes, the MC68340FE25E includes a fully compliant IEEE 1149.1 Test Access Port (TAP) with TCK, TMS, TDI, and TDO pins. This enables boundary-scan testing, in-circuit emulation, and real-time debug visibility - essential for validating complex industrial control firmware and verifying PCB interconnect integrity.
What bus interface modes does the MC68340FE25E support?
The MC68340FE25E supports both multiplexed and non-multiplexed external bus configurations. In multiplexed mode, address bits A31–A24 share pins with data bus D15–D0; in non-multiplexed mode, all 32 address lines are dedicated. Mode selection is controlled by the MODCK pin and SYNCR register settings per the MC68340 User's Manual.
Is the MC68340FE25E pin-compatible with other M68300 family members?
No, the MC68340FE25E is not pin-compatible with other M68300 devices such as the MC68332 or MC68360 due to differences in pin count (132-pin CQFP vs. 112- or 208-pin packages), signal assignment, and power/ground distribution. Each device requires a unique PCB layout and footprint.
What is the role of the System Integration Module (SIM) in the MC68340FE25E?
Within the MC68340FE25E, the System Integration Module (SIM) consolidates clock generation, interrupt vectoring, chip select decoding, watchdog timing, periodic interrupts, and external bus control. It eliminates discrete logic for system management, enabling compact board design and consistent timing across peripherals - a key enabler for deterministic real-time embedded applications.
MC68340FE25E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 144-BCQFP
- Series:
- M683xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Core Processor:
- CPU32
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 25MHz
- Co-Processors/DSP:
- -
- 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:
- 144-CQFP (26.77x26.77)
- Additional Interfaces:
- USART
MC68340FE25E FAQ
1.How can I place an order for MC68340FE25E through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68340FE25E 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 MC68340FE25E reliable?
The price and inventory of MC68340FE25E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68340FE25E is usually 5 days.
3.What payment methods are accepted for MC68340FE25E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68340FE25E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68340FE25E?
MC68340FE25E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68340FE25E 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 MC68340FE25E?
For technical support, including MC68340FE25E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68340FE25E requirements.
6.How does Aetrix verify that MC68340FE25E is sourced from the original manufacturer or authorized distributors?
All MC68340FE25E 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 MC68340FE25E meets industry standards.
7.What is the process for return or replacement of MC68340FE25E?
All MC68340FE25E units undergo pre-shipment inspection (PSI). If there is an issue with MC68340FE25E, 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 MC68340FE25E part is unused and in its original packaging.
Return procedure for MC68340FE25E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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