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NXP Semiconductors MC68340AG16EB1
- Part No.:
- MC68340AG16EB1
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 144-LQFP
- Datasheet:
-
MC68340AG16EB1.pdf
- Description:
- IC MPU M683XX 16MHZ 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,915
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Product details
Overview
MC68340AG16EB1 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 16.78 MHz on a 5 V ±5% supply in a 144-pin CQFP package; used in CD-I players, industrial controllers, and embedded systems requiring high-speed data transfer and M68000 object-code compatibility.
For engineers reviewing the MC68340AG16EB1 datasheet, MC68340AG16EB1 pinout, MC68340AG16EB1 application, or MC68340AG16EB1 equivalent, key selection considerations include its 32-bit address/16-bit data bus interface, background debug mode, IEEE 1149.1 JTAG support, LPSTOP low-power state, and dual-address DMA capability for memory-to-peripheral transfers.
Technical Context
The MC68340AG16EB1 implements the CPU32 core - an M68020-derived 32-bit CISC processor with full upward object-code compatibility to MC68000/MC68010, delivering 6,742 Dhrystones/sec at 16.78 MHz and supporting supervisor/user privilege modes, 32-bit registers, and embedded control instructions including low-power STOP.
Its on-chip peripherals communicate via the intermodule bus (IMB): the SIM40 handles external bus interface (32 address/16 data lines), chip select generation, wait-state insertion, clock synthesis, and IEEE 1149.1 boundary scan; the dual-channel DMA supports 8/16/32-bit transfers at up to 33.3 MB/s (single-address) and 8.4 MB/s (dual-address) at 16.78 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU32 - M68020-derived 32-bit CISC core, fully object-code compatible with MC68000/MC68010 |
| Max Clock Frequency | 16.78 MHz - determines instruction throughput and peripheral timing resolution (e.g., 125 ns timer resolution) |
| Supply Voltage | 5.0 V ±5% - standard operation voltage; no 3.3 V support (MC68340V variant required for 3.3 V) |
| External Bus Interface | 32-bit address / 16-bit data bus - enables access to 4 GB linear address space with dynamic 8/16-bit sizing |
| DMA Throughput | 8.4 MB/s dual-address / 33.3 MB/s single-address - sustains high-bandwidth transfers without CPU intervention |
| USART Compatibility | MC68681/MC2681 DUART - ensures drop-in software driver reuse and modem control signal support (RTS/CTS) |
| Timer Resolution | 125 ns - achieved using internal ÷2 system clock (16.78 MHz → 8.39 MHz timer clock) |
| JTAG Support | IEEE 1149.1 compliant - enables boundary-scan testing and in-circuit debugging without external probes |
Pinout & Package
MC68340AG16EB1 is housed in a 144-pin Ceramic Quad Flat Pack (CQFP) with gull-wing leads and 0.65 mm pitch, optimized for surface-mount assembly and thermal stability in industrial environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A23–A0 | Address Bus | 24-bit multiplexed address output during bus cycles; extended to 32 bits via port A pins (A24–A31) |
| D15–D0 | Data Bus | 16-bit bidirectional data path; supports 8/16-bit transfers with dynamic sizing controlled by SIM40 |
| RESET | Reset Input | Active-low synchronous reset that initializes CPU32, SIM40, DMA, and timers to known states |
| CLKOUT | System Clock Output | Buffered version of internal system clock; used to synchronize external logic or peripherals |
| TIN1/TIN2 | Timer Input | External event inputs for input capture or period measurement; sampled synchronously to timer clock |
| TOUT1/TOUT2 | Timer Output | Programmable pulse outputs for waveform generation, PWM, or interrupt triggering |
| RxDA/RxDB | USART Receive Data | Two independent serial receive inputs for full-duplex channel A and B communication |
| CTSA/CTSB | Clear-to-Send | Hardware flow control inputs indicating readiness of external devices to accept data |
| TCK/TMS/TDI/TDO | JTAG Test Interface | IEEE 1149.1 boundary scan signals enabling structural test and debug access |
Key Features
| Feature | Design Value |
|---|---|
| Background Debug Mode (BDM) | Enables real-time register/memory inspection and patch execution via dedicated serial interface - eliminates need for external emulator hardware |
| LPSTOP Low-Power State | Reduces standby current to ~300 µW by halting CPU and peripheral clocks while preserving register contents - ideal for battery-backed systems |
| Dual-Channel DMA with Dual-Address Mode | Allows simultaneous source/destination addressing for memory-to-peripheral transfers - avoids CPU overhead in high-throughput I/O tasks |
| SIM40 System Integration Module | Replaces discrete glue logic for address decoding, wait-state generation, interrupt prioritization, and clock synthesis - cuts BOM count and PCB area |
| MC68681-Compatible USARTs | Provides drop-in software compatibility with widely deployed DUART drivers and full modem control (RTS/CTS/DSR/DTR) |
| 24-Bit Composite Timer Resolution | Combines 16-bit counter + 8-bit prescaler for precise timing events (e.g., DRAM refresh, PWM, event counting) without software jitter |
Applications
| CD-I Player Controller | Industrial Motion Controller |
|---|---|
Use Scenario: Real-time decoding and playback of compressed multimedia content from CD-ROM media in consumer electronics. IC Role / Device Role / Timing Role: Central processor executing CD-I Green Book firmware, managing DMA-driven audio/video data streams, and coordinating dual USARTs for remote control and host interface. Use Value: MC68340AG16EB1's M68000 code compatibility enables reuse of existing CD-I BIOS and drivers, while its 8.4 MB/s dual-address DMA sustains uninterrupted data flow from CD-ROM buffer to audio DAC. | Use Scenario: Closed-loop servo control of multi-axis CNC machines with real-time position feedback and safety monitoring. IC Role / Device Role / Timing Role: Main controller running motion algorithms, interfacing with quadrature encoders via timer input capture, and driving stepper motor drivers through discrete I/O and USART-based command protocols. Use Value: MC68340AG16EB1's 125 ns timer resolution enables sub-microsecond event timing for encoder edge detection, and its SIM40-integrated watchdog prevents runaway motion due to software faults. |
| Telecom Protocol Gateway | Medical Imaging Data Acquirer |
Use Scenario: Bridging legacy RS-232/RS-485 fieldbus networks to Ethernet backhaul in cellular base station remote units. IC Role / Device Role / Timing Role: Protocol translation engine using dual USARTs for serial link termination and DMA-assisted packet buffering before TCP/IP stack processing. Use Value: MC68340AG16EB1's dual-channel DMA offloads 90% of serial-to-memory data movement, freeing CPU32 cycles for protocol parsing and error correction in resource-constrained edge nodes. | Use Scenario: High-fidelity acquisition of analog X-ray detector signals digitized at 1 MSPS and streamed to local storage or PACS network. IC Role / Device Role / Timing Role: Real-time data concentrator managing ADC interface, DMA-driven buffer filling, and burst-mode Ethernet transmission via external MAC. Use Value: MC68340AG16EB1's 33.3 MB/s single-address DMA bandwidth ensures zero-drop acquisition at full ADC rate, while its 32-bit address space accommodates large frame buffers in external SDRAM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar integrated processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68332ACPV16 | 16 MHz CPU32 core, no DMA controller, includes QSM (Queue Serial Module) instead of dual USARTs; 132-pin PQFP package | Lacks high-speed block transfer capability; suited for deterministic control over data-intensive I/O | Select when DMA is unnecessary and QSM-based fieldbus (e.g., CAN-like) communication is preferred over UART-based protocols |
| MC68360EM26DR | 26 MHz PowerPC-based RISC core, integrated QUICC engine for communications, 3.3 V operation, 240-pin PBGA | Architecturally incompatible (PowerPC vs. M68K); requires full firmware rewrite but offers higher throughput and modern peripheral set | Choose for new designs needing higher performance and future-proof communications IP, accepting migration effort from M68K ecosystem |
Compared with MC68340AG16EB1, MC68332ACPV16 sacrifices DMA for smaller footprint and QSM flexibility, while MC68360EM26DR abandons M68K compatibility entirely for PowerPC performance and QUICC-based networking - making MC68340AG16EB1 the optimal choice for legacy M68K-based systems requiring integrated DMA and USARTs without architectural overhaul.
Availability
MC68340AG16EB1 is available at Aetrix Electronics and suitable for CD-I player manufacturing, industrial motion control systems, telecom protocol gateways, and medical imaging data acquisition requiring stable component supply and long-term obsolescence management.
Supply support for MC68340AG16EB1 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 via Freescale acquisition) pioneered high-integration microcontrollers for embedded control in the 1990s, emphasizing code compatibility, power efficiency, and system-level integration.
The MC68340AG16EB1 belongs to the M68300 family of integrated processors designed to replace multi-chip microprocessor systems with a single IC - targeting cost-sensitive, reliability-critical applications like consumer multimedia and industrial automation.
FAQ
What is the maximum operating frequency of the MC68340AG16EB1?
The MC68340AG16EB1 is rated for operation up to 16.78 MHz at 5.0 V ±5%. This frequency defines its instruction throughput (6,742 Dhrystones/sec), timer resolution (125 ns), and maximum DMA bandwidth (33.3 MB/s in single-address mode). Operation above this frequency is not guaranteed and may result in timing violations or functional failure.
Does the MC68340AG16EB1 support 3.3 V operation?
No, the MC68340AG16EB1 is a 5 V-only device. Its suffix "AG16EB1" denotes ceramic quad flat pack packaging and 16.78 MHz speed grade at 5 V. For 3.3 V operation, the MC68340V series (e.g., MC68340VAG16EB1) must be selected - it uses different internal voltage regulation and has reduced maximum frequency at lower voltage.
Is the MC68340AG16EB1 pin-compatible with other M68300 family members?
No, the MC68340AG16EB1 is not pin-compatible with other M68300 parts such as the MC68332 or MC68360. It uses a unique 144-pin CQFP footprint with specific signal assignments (e.g., dual USARTs, two timer inputs/outputs, IMB signals) not replicated in other family members. PCB layout must be designed specifically for MC68340AG16EB1.
What debugging interfaces does the MC68340AG16EB1 provide?
The MC68340AG16EB1 provides two primary debugging interfaces: Background Debug Mode (BDM) via dedicated serial pins (BKPT/DSCLK, IPIPE/DS0, IFETCH/DS1) for real-time register and memory access, and IEEE 1149.1 JTAG (TCK/TMS/TDI/TDO) for boundary-scan testing and structural diagnostics - both supported simultaneously without conflict.
Can the MC68340AG16EB1 directly drive RS-232 level signals?
No, the MC68340AG16EB1 USART outputs (TxDA/TxDB) are CMOS-level (0 V to 5 V), not RS-232 compliant (±3 V to ±15 V). External line drivers such as MAX232 or SP3232 are required to translate logic-level signals to RS-232 voltage levels and provide ESD protection for robust serial communication.
MC68340AG16EB1 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:
- 16MHz
- 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
MC68340AG16EB1 FAQ
1.How can I place an order for MC68340AG16EB1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68340AG16EB1 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 MC68340AG16EB1 reliable?
The price and inventory of MC68340AG16EB1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68340AG16EB1 is usually 5 days.
3.What payment methods are accepted for MC68340AG16EB1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68340AG16EB1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68340AG16EB1?
MC68340AG16EB1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68340AG16EB1 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 MC68340AG16EB1?
For technical support, including MC68340AG16EB1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68340AG16EB1 requirements.
6.How does Aetrix verify that MC68340AG16EB1 is sourced from the original manufacturer or authorized distributors?
All MC68340AG16EB1 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 MC68340AG16EB1 meets industry standards.
7.What is the process for return or replacement of MC68340AG16EB1?
All MC68340AG16EB1 units undergo pre-shipment inspection (PSI). If there is an issue with MC68340AG16EB1, 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 MC68340AG16EB1 part is unused and in its original packaging.
Return procedure for MC68340AG16EB1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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