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NXP Semiconductors MC68340PV25E
- Part No.:
- MC68340PV25E
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 144-LQFP
- Datasheet:
-
MC68340PV25E.pdf
- Description:
- IC MPU M683XX 25MHZ 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,286
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Product details
Overview
MC68340PV25E 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 145-pin plastic PGA package. It delivers 4 MIPS (VAX-equivalent) performance, supports 32-bit addressing with 16-bit data bus, and targets embedded control systems requiring high-speed memory transfers and real-time I/O handling.
For engineers reviewing the MC68340PV25E datasheet, MC68340PV25E pinout, MC68340PV25E application, or MC68340PV25E equivalent, this page provides verified functional identity, validated pin mapping, confirmed timing behavior, exact peripheral register compatibility, and documented alternative selection guidance for industrial and multimedia embedded designs.
Technical Context
The MC68340PV25E implements the CPU32 core - an M68020-derived 32-bit CISC processor with full object-code compatibility to MC68000/MC68010, supporting 32×32 multiply, 32-bit conditional branches, and background debug mode via dedicated serial interface. Its intermodule bus (IMB) synchronously connects CPU32, DMA, USARTs, timers, and SIM40 without external arbitration logic.
Peripheral subsystems operate independently but share memory-mapped registers: dual-channel DMA supports single- or dual-address transfers (8/16/32-bit data, 32-bit addresses), each USART offers MC68681-compatible framing and modem control, and two 16-bit timers with 8-bit prescaler deliver 80 ns resolution at 25.16 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU32 - M68020-derived, upward object-code compatible with MC68000/MC68010, 4 MIPS @ 25.16 MHz |
| Max Clock Frequency | 25.16 MHz - enables 50 Mbyte/sec sustained DMA throughput in single-address mode |
| Supply Voltage | 5.0 V ±5% - required for full-speed operation; not rated for 3.3 V (MC68340V variant only) |
| External Bus Interface | 32 address lines / 16 data lines - supports dynamic 8- or 16-bit bus sizing and synchronous transfers in ≥2 clocks |
| DMA Throughput | 12.5 Mbyte/sec memory-to-memory - dual-address mode at 25.16 MHz; no external glue logic needed |
| USART Compatibility | MC68681/MC2681 - full-duplex, independent baud rate generation per channel, 9.8 Mbps max serial rate |
| Timer Resolution | 80 ns - achieved using internal system clock ÷2 at 25.16 MHz; supports input capture, output compare, PWM |
Pinout & Package
MC68340PV25E is housed in a 145-pin plastic pin grid array (PPGA) with 0.1-in pitch, designed for surface-mount assembly and thermal management in industrial environments. The package includes 32 dedicated power/ground pins to minimize ground bounce and isolate clock oscillator circuitry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A23–A0 | Address Bus | 24-bit multiplexed address output during CPU or DMA cycles; extended to 32 bits via A31–A24 on alternate cycles |
| D15–D0 | Data Bus | 16-bit bidirectional data path; supports 8-/16-bit transfers; 32-bit DMA uses two consecutive cycles |
| RESET | System Reset Input | Active-low asynchronous reset; initializes CPU32, SIM40, DMA, and all peripherals to known state |
| CLKOUT | System Clock Output | Provides buffered copy of internal system clock for external synchronization (e.g., DRAM refresh, peripheral timing) |
| TIN1 / TIN2 | Timer External Input | Accepts external event pulses for period measurement, frequency counting, or gated timer start/stop |
| TOUT1 / TOUT2 | Timer Output | Programmable active-high or active-low pulse outputs for waveform generation, PWM, or interrupt signaling |
| RxDA / RxDB | USART Channel A/B Receive | Dedicated serial input pins for full-duplex communication; support hardware flow control via RTS/CTS |
| TXDA / TXDB | USART Channel A/B Transmit | Serial output pins with programmable framing (5–8 bits, parity, 1–2 stop bits); autoecho and loopback modes supported |
| DREQ1 / DREQ2 | DMA Request Inputs | Level-sensitive signals initiating DMA transfers; can be asserted by peripherals or software via SIM40 registers |
| DACK1 / DACK2 | DMA Acknowledge Outputs | Indicate DMA channel ownership of external bus; used by peripherals to synchronize data handshaking |
| BERR | Bus Error Output | Signals invalid memory access or timeout; triggers CPU32 bus fault exception and SIM40 bus monitor response |
| HALT | CPU Halt Request | Allows external logic to pause CPU32 execution while preserving register state and enabling DMA-only operation |
Key Features
| Feature | Design Value |
|---|---|
| Background Debug Mode (BDM) | Enables in-circuit debugging via dedicated full-duplex serial interface without halting target system operation |
| IEEE 1149.1 Boundary Scan | Supports JTAG-based board-level test and interconnect verification without additional test fixtures |
| Programmable Clock Synthesizer | Generates internal clocks from 131 kHz to 25.16 MHz using internal PLL; allows dynamic frequency scaling for power/performance trade-offs |
| System Integration Module (SIM40) | Replaces discrete PAL/TTL glue logic for chip select decoding, wait-state insertion, interrupt prioritization, and watchdog timing |
| Low-Power STOP (LPSTOP) | Reduces standby current to ~300 µW by halting CPU32 and disabling active peripherals while retaining register contents |
Applications
| CD-I Player Controller | Industrial PLC Base Unit |
|---|---|
Use Scenario: Real-time decoding and buffering of compressed audio/video streams from CD-ROM media in consumer multimedia devices. IC Role / Device Role / Timing Role: Central processor executing CD-I Green Book firmware, managing DMA-driven data streaming from CD-ROM controller to video/audio buffers. Use Value: CPU32's M68000 compatibility ensures direct reuse of existing CD-I OS kernels; dual-channel DMA sustains >12 MB/s memory-to-memory transfers required for full-motion video playback. | Use Scenario: Deterministic control of I/O modules, motion axes, and HMI interfaces in factory automation systems operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Real-time deterministic controller coordinating serial fieldbus communication (via USART), timed I/O scanning (via timers), and safety-critical data logging (via DMA to flash). Use Value: Integrated SIM40 eliminates external address decoders and wait-state generators; 80 ns timer resolution enables precise servo loop timing and jitter-free pulse-width modulation for motor drives. |
| Telecom Line Card Processor | Medical Imaging Data Acquirer |
Use Scenario: Protocol bridging and packet processing between T1/E1 framer ICs and host backplane in carrier-grade access equipment. IC Role / Device Role / Timing Role: Embedded communications processor handling HDLC framing, CRC calculation, and buffer management using dual USARTs and DMA. Use Value: MC68681-compatible USARTs support simultaneous RS-232/RS-485 links; 9.8 Mbps serial throughput meets E1 line-rate requirements without external FIFOs. | Use Scenario: High-fidelity acquisition and preprocessing of analog sensor data from MRI or CT detector arrays before transmission to host workstation. IC Role / Device Role / Timing Role: High-throughput data concentrator using DMA to move ADC samples directly into SDRAM, with timers triggering synchronized sampling windows. Use Value: 50 MB/s DMA bandwidth prevents sample loss during burst acquisition; 32-bit addressing supports >1 GB frame buffers for multi-slice imaging sequences. |
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, 112-pin QFP, no USART - replaces serial I/O with time-triggered CAN interface and enhanced queue-based timers | Targeted at automotive body control and distributed systems requiring deterministic message scheduling over CAN bus | Select when CAN protocol stack integration and reduced pin count outweigh need for dual UARTs and higher clock speed |
| MC68360VR66B | 66 MHz integrated communications processor with QUICC engine, 256-pin PBGA, 3.3 V supply - adds Ethernet MAC, HDLC, and SCC peripherals | Designed for network edge devices requiring multi-protocol routing (Ethernet, HDLC, PPP) and TCP/IP offload | Select when LAN/WAN connectivity and hardware-accelerated protocol processing supersede pure embedded control functionality |
Compared with MC68340PV25E, MC68332CFN16 trades serial I/O and clock speed for CAN timing determinism and smaller footprint, while MC68360VR66B shifts focus from general-purpose embedded control to communications-centric applications with integrated networking accelerators - neither offers pin or code compatibility.
Availability
MC68340PV25E is available at Aetrix Electronics and suitable for compact disc-interactive players, industrial PLC base units, telecom line cards, and medical imaging data acquirers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MC68340PV25E 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 68K architecture microprocessors and integrated controllers, delivering high-reliability silicon for automotive, industrial, and consumer applications through advanced HCMOS process technology.
The MC68340PV25E belongs to the M68300 family of integrated processors built on the CPU32 core, designed specifically to consolidate microprocessor, DMA, serial, timer, and system management functions into a single chip for cost-sensitive, high-reliability embedded control systems.
FAQ
What is the maximum operating frequency of the MC68340PV25E?
The MC68340PV25E is rated for operation up to 25.16 MHz at 5.0 V ±5%. This frequency enables its CPU32 core to achieve 4 MIPS (VAX-equivalent) performance and supports 50 Mbyte/sec sustained DMA throughput in single-address mode. Operation above this frequency is not guaranteed and may result in timing violations or data corruption. The MC68340PV25E does not support 3.3 V operation - that capability is exclusive to the MC68340V variant.
Does the MC68340PV25E support IEEE 1149.1 boundary scan testing?
Yes, the MC68340PV25E includes full IEEE 1149.1-compliant boundary scan logic accessible via dedicated TCK, TMS, TDI, and TDO pins. This feature enables automated PCB interconnect testing, in-system programming verification, and fault isolation without physical probe access. The boundary scan implementation is integrated into the System Integration Module (SIM40) and operates independently of CPU32 execution, allowing test operations during system idle or debug states.
How many serial communication channels does the MC68340PV25E provide, and what is their compatibility?
The MC68340PV25E integrates two independent full-duplex USART channels (RxDA/TxDA and RxDB/TxDB), each functionally equivalent to the MC68681/MC2681 DUART. Both support programmable data formats (5–8 bits, parity, 1–2 stop bits), hardware flow control (RTS/CTS), and baud rates up to 76.8 kbps using internal generators or external clocks. They sustain up to 9.8 Mbps aggregate serial throughput at 25 MHz system clock, making them suitable for dual-protocol or redundant communication links.
What power management features are implemented in the MC68340PV25E?
The MC68340PV25E includes multiple hardware-assisted power management features: programmable clock synthesizer for dynamic frequency scaling, individual peripheral enable/disable control to reduce leakage, and LPSTOP instruction for ultra-low-power standby mode (~300 µW). These features operate without external components and are managed entirely through SIM40 registers. Unlike the MC68340V, the MC68340PV25E does not support 3.3 V operation, so voltage scaling is not available - power reduction relies solely on clock gating and functional shutdown.
Is the MC68340PV25E pin-compatible with other members of the M68300 family?
No, the MC68340PV25E is not pin-compatible with other M68300 family members such as the MC68332 or MC68360. Its 145-pin PPGA package, signal assignment (e.g., dual USART pins, specific DMA request/acknowledge lines), and power/ground pin distribution are unique to the MC68340. While software drivers for shared modules (e.g., timers, SIM40 registers) are portable across the family, hardware design requires custom PCB layout for each part due to differing pin counts, packages, and peripheral mappings.
MC68340PV25E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 144-LQFP
- 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-LQFP (20x20)
- Additional Interfaces:
- USART
MC68340PV25E FAQ
1.How can I place an order for MC68340PV25E through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68340PV25E 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 MC68340PV25E reliable?
The price and inventory of MC68340PV25E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68340PV25E is usually 5 days.
3.What payment methods are accepted for MC68340PV25E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68340PV25E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68340PV25E?
MC68340PV25E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68340PV25E 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 MC68340PV25E?
For technical support, including MC68340PV25E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68340PV25E requirements.
6.How does Aetrix verify that MC68340PV25E is sourced from the original manufacturer or authorized distributors?
All MC68340PV25E 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 MC68340PV25E meets industry standards.
7.What is the process for return or replacement of MC68340PV25E?
All MC68340PV25E units undergo pre-shipment inspection (PSI). If there is an issue with MC68340PV25E, 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 MC68340PV25E part is unused and in its original packaging.
Return procedure for MC68340PV25E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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