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NXP Semiconductors MC68340FT25E
- Part No.:
- MC68340FT25E
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 144-BQFP
- Datasheet:
-
MC68340FT25E.pdf
- Description:
- IC MPU M683XX 25MHZ 144QFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MC68340FT25E from Motorola is a 32-bit integrated processor with CPU32 core, dual-channel DMA controller, two USARTs, and system integration module (SIM40), operating at up to 25.16 MHz on a 5 V ±5% supply in a 144-pin CQFP package. It delivers 4 MIPS (VAX-equivalent) performance and supports embedded control systems requiring high-speed memory-to-peripheral data transfers, such as CD-I players and industrial controllers.
For engineers reviewing the MC68340FT25E datasheet, MC68340FT25E pinout, MC68340FT25E application, or MC68340FT25E equivalent, key selection criteria include its M68000 object-code compatibility, 32-bit address/16-bit data bus interface, IEEE 1149.1 JTAG support, LPSTOP low-power mode, and dual-channel DMA capable of 50 MB/s single-address transfers at 25.16 MHz.
Technical Context
The MC68340FT25E implements the CPU32 core-a 32-bit M68020-derived processor with full MC68000/MC68010 object-code compatibility, 32×32 multiply, and background debug mode via dedicated serial interface. Its intermodule bus (IMB) synchronously connects CPU32, DMA, USARTs, timers, and SIM40 without external arbitration logic.
The SIM40 integrates external bus interface (32 address/16 data lines), programmable chip selects (up to 4 Gbyte blocks), wait-state generation (0–3 cycles), clock synthesis (PLL-based, 131 kHz–25.16 MHz), IEEE 1149.1 boundary scan, and power-on reset. DMA channels operate in single- or dual-address mode with independent DREQ/DACK/DONE signaling and 32-bit counters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU32: M68020-derived 32-bit CISC core, upward compatible with MC68000/MC68010 object code |
| Max Clock Frequency | 25.16 MHz - enables 4 MIPS (VAX) performance and 50 MB/s DMA throughput in single-address mode |
| Bus Interface | 32-bit address / 16-bit data external bus - supports dynamic sizing for 8-/16-bit accesses and synchronous transfers in ≥2 clocks |
| DMA Throughput | 50 MB/s sustained (single-address) @ 25.16 MHz - offloads CPU for high-bandwidth peripheral-to-memory transfers |
| USART Channels | Two independent full-duplex UARTs - MC68681/MC2681 compatible, with 4-byte RX/2-byte TX FIFOs and modem control signals |
| Timer Resolution | 80 ns minimum - achieved with 25 MHz system clock ÷2 input to 16-bit counter + 8-bit prescaler |
| Power Supply | 5.0 V ±5% - required for MC68340FT25E variant; distinguishes it from 3.3 V MC68340V family members |
| Operating Temperature | 0°C to +70°C - commercial-grade rating confirmed for FT25E suffix per Motorola package/frequency table |
Pinout & Package
MC68340FT25E is housed in a 144-pin Ceramic Quad Flat Pack (CQFP) with gull-wing leads and 0.65 mm pitch. The package provides 32 dedicated power/ground pins to minimize ground bounce and isolate oscillator circuitry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A31–A0 | Address Bus Outputs | 32-bit linear address space (4 Gbyte); A24–A0 used for external memory/peripheral addressing |
| D15–D0 | Data Bus Bidirectional | 16-bit data path; supports byte/word transfers; dynamically sized by SIZ1/SIZ0 during bus cycles |
| AS, DS, R/W | Bus Control Signals | Address Strobe, Data Strobe, Read/Write - define valid bus cycle timing per MC68030-compatible protocol |
| RESET, HALT, BERR | System Control Inputs | Asynchronous reset, CPU halt request, bus error detection - enable robust fault recovery and debugging |
| TCK, TMS, TDI, TDO | JTAG Boundary Scan | IEEE 1149.1 compliant test interface - allows in-system diagnostics without intrusive probing |
| RxDA/RxDB, TxDA/TxDB | USART Channel I/O | Dual independent serial ports - each with full modem handshaking (RTS/CTS) and configurable baud rates |
| DREQ1/DREQ2, DACK1/DACK2 | DMA Request/Acknowledge | Independent hardware handshake per channel - enables concurrent DMA operations without CPU arbitration overhead |
| TIN1/TIN2, TOUT1/TOUT2 | Timer Input/Output | External event capture and waveform generation - supports input capture, output compare, PWM, and pulse-width measurement |
Key Features
| Feature | Design Value |
|---|---|
| Background Debug Mode (BDM) | On-chip microcode enables full register/memory access and patch execution over dedicated serial link - eliminates need for external emulator hardware |
| Intermodule Bus (IMB) | Internal synchronized bus connecting CPU32, DMA, USARTs, timers, and SIM40 - eliminates external glue logic and ensures deterministic arbitration |
| Programmable Clock Synthesizer | Internal PLL accepts 32.768 kHz crystal or external oscillator - software-selectable frequencies from 131 kHz to 25.16 MHz optimize power/performance trade-offs |
| LPSTOP Low-Power Mode | Executes stop instruction to halt CPU and disable peripherals - reduces active current to ~300 µW while preserving register state for fast wake-up |
| System Integration Module (SIM40) | Replaces discrete PALs/TTL for address decoding, wait-state insertion, interrupt vectoring, watchdog, DRAM refresh timer, and power-on reset - cuts component count by >20 parts |
| Dual-Channel DMA Controller | Independent 32-bit address/data paths per channel - supports burst/cycle-steal modes and bandwidth allocation (25–100%) to prevent CPU starvation |
Applications
| CD-I Player Control | Industrial Motion Controller |
|---|---|
Use Scenario: Real-time processing of compressed audio/video streams and user input from infrared remote in compact disc-interactive systems. IC Role / Device Role / Timing Role: Central processor executing CD-I Green Book–compliant firmware, managing DMA-driven data streaming from CD-ROM buffer to video/audio DACs. Use Value: CPU32's M68000 compatibility enables reuse of existing CD-I OS kernels; dual-channel DMA sustains 50 MB/s transfers to keep playback buffers full without CPU intervention. | Use Scenario: Closed-loop servo control of multi-axis motor drives with real-time position feedback and safety monitoring. IC Role / Device Role / Timing Role: System controller coordinating encoder input capture, PWM output generation, and fieldbus communication via USART. Use Value: Two independent 16-bit timers with 80 ns resolution enable precise pulse-width modulation and encoder period measurement; SIM40's programmable chip selects simplify connection to external I/O expanders and safety relays. |
| Telecom Line Card | Medical Imaging Subsystem |
Use Scenario: Protocol bridging between T1/E1 framer ICs and host processor in digital PBX line cards. IC Role / Device Role / Timing Role: Communications processor handling HDLC framing, CRC calculation, and time-slot assignment using dual USARTs and DMA. Use Value: MC68681-compatible USARTs support simultaneous E1 (2.048 Mbps) and V.35 (2 Mbps) links; DMA offloads 9.8 Mbps serial throughput from CPU, freeing cycles for call setup logic. | Use Scenario: Acquisition and preprocessing of ultrasound echo data before transfer to main imaging engine. IC Role / Device Role / Timing Role: Dedicated subsystem controller managing ADC sampling, FIR filtering, and DMA transfer of processed frames to shared memory. Use Value: Dual-channel DMA moves filtered image data directly from on-chip buffers to SDRAM without CPU involvement; background debug mode enables non-intrusive validation of real-time filter coefficients. |
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 controller, includes QSM (queue serial module) instead of dual USARTs | Lacks high-throughput data movement capability; suited for control-only tasks without streaming I/O | Select when DMA is unnecessary and queue-based serial protocols (e.g., CAN-like messaging) are preferred over UARTs |
| MC68360ENxx | Integrated QUICC engine (RISC coprocessor), 25 MHz, 32-bit data bus, enhanced Ethernet/HDLC support | Targeted at communications infrastructure; higher gate count, larger footprint, different peripheral set | Choose for networking applications requiring built-in HDLC/SDLC or Ethernet MAC; not drop-in compatible due to pinout and memory map differences |
Compared with MC68332CFN16, the MC68340FT25E provides essential DMA bandwidth for streaming applications but requires more board space; versus MC68360ENxx, it offers simpler software architecture and lower cost for non-networking embedded control, though lacks QUICC acceleration for packet processing.
Availability
MC68340FT25E is available at Aetrix Electronics and suitable for CD-I player manufacturing, industrial motion control systems, telecom line card development, and medical imaging subsystems requiring stable component supply across extended product lifecycles.
Supply support for MC68340FT25E 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 Semiconductors) was a pioneer in 32-bit embedded processors, known for the M68000 architecture and automotive/industrial ICs.
The MC68340FT25E belongs to the M68300 family of integrated processors designed for embedded control applications where high functional integration, M68000 software compatibility, and deterministic real-time performance are critical.
FAQ
What is the maximum operating frequency supported by the MC68340FT25E?
The MC68340FT25E is rated for operation up to 25.16 MHz, as indicated by the "25" in its part number suffix. This frequency enables 4 MIPS (VAX-equivalent) performance and supports sustained DMA transfer rates of 50 MB/s in single-address mode. It operates with a 5.0 V ±5% supply and is specified for 0°C to +70°C ambient temperature. The MC68340FT25E achieves this speed using Motorola's 0.8 µm HCMOS process and static logic design.
Does the MC68340FT25E support IEEE 1149.1 boundary scan testing?
Yes, the MC68340FT25E includes full IEEE 1149.1 (JTAG) boundary scan test logic integrated into its System Integration Module (SIM40). Pins TCK, TMS, TDI, and TDO are dedicated to this function and appear in the 144-pin CQFP pinout. This capability enables in-system diagnostics, interconnect verification, and programming of attached devices without physical probe access - a key requirement for high-reliability industrial and telecom applications using the MC68340FT25E.
How does the MC68340FT25E handle power management in low-duty-cycle applications?
MC68340FT25E implements multiple power-saving mechanisms: programmable clock throttling (131 kHz–25.16 MHz), selective peripheral shutdown (5–10% savings per module), and LPSTOP instruction that halts CPU execution and disables active circuits while retaining register state. In LPSTOP mode, current drops to ~300 µW, enabling rapid wake-up via SIM40-generated interrupts. These features make the MC68340FT25E suitable for battery-backed or energy-constrained embedded systems where duty cycling is essential.
Is the MC68340FT25E pin-compatible with other members of the M68300 family?
No, the MC68340FT25E is not pin-compatible with other M68300 family members such as the MC68332 or MC68360. While they share the CPU32 core and IMB architecture, peripheral selection (e.g., dual USARTs vs. QSM vs. QUICC), bus width (16-bit vs. 32-bit data), and package options differ significantly. The MC68340FT25E uses a 144-pin CQFP layout unique to its feature set; migration requires PCB redesign and firmware adaptation despite software compatibility at the instruction level.
What development tools are supported for firmware development on the MC68340FT25E?
Firmware development for the MC68340FT25E leverages Motorola's established M68000 ecosystem: CodeWarrior Development Studio (legacy), GNU GCC cross-compilers targeting m68k-elf, and third-party RTOSes including VxWorks, pSOS+, and RTEMS - all compatible due to full MC68000 object-code support. Hardware debugging uses the Background Debug Mode (BDM) interface with compatible probes (e.g., P&E Micro BDM12), eliminating need for socketed emulators. The MC68340UM/AD User's Manual and BR573/D Evaluation System Brief provide complete toolchain documentation for the MC68340FT25E.
MC68340FT25E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 144-BQFP
- 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-QFP (28x28)
- Additional Interfaces:
- USART
MC68340FT25E FAQ
1.How can I place an order for MC68340FT25E through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68340FT25E 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 MC68340FT25E reliable?
The price and inventory of MC68340FT25E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68340FT25E is usually 5 days.
3.What payment methods are accepted for MC68340FT25E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68340FT25E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68340FT25E?
MC68340FT25E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68340FT25E 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 MC68340FT25E?
For technical support, including MC68340FT25E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68340FT25E requirements.
6.How does Aetrix verify that MC68340FT25E is sourced from the original manufacturer or authorized distributors?
All MC68340FT25E 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 MC68340FT25E meets industry standards.
7.What is the process for return or replacement of MC68340FT25E?
All MC68340FT25E units undergo pre-shipment inspection (PSI). If there is an issue with MC68340FT25E, 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 MC68340FT25E part is unused and in its original packaging.
Return procedure for MC68340FT25E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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