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NXP Semiconductors MC68340CAG16E
- Part No.:
- MC68340CAG16E
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 144-LQFP
- Datasheet:
-
MC68340CAG16E.pdf
- Description:
- IC MPU M683XX 16MHZ 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,653
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Product details
Overview
MC68340CAG16E 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 16 MHz, supporting 32-bit address/data bus, IEEE 1149.1 JTAG test access, and low-power STOP mode. It targets industrial control and embedded communications systems requiring deterministic real-time response and peripheral integration.
For engineers reviewing the MC68340CAG16E datasheet, MC68340CAG16E pinout, MC68340CAG16E application, or MC68340CAG16E equivalent, key selection criteria include CPU32 instruction set compatibility, integrated DMA channel count, SIM-based clock synthesis flexibility, and external bus interface timing for legacy memory/peripheral interfacing.
Technical Context
The MC68340CAG16E implements the CPU32 core - a superset of the M68000 architecture with 32-bit registers, enhanced addressing modes, and new instructions including LPSTOP and TBL. Its System Integration Module (SIM) integrates clock synthesis (with programmable PLL), chip select generation, interrupt handling, periodic timer, watchdog, and bus arbitration logic.
It features two independent serial channels (SCC-compatible), two 16-bit timer modules with gate, input, and output pins, and a 4-channel DMA controller supporting memory-to-memory and peripheral-to-memory transfers. All peripherals are memory-mapped and accessible via the 32-bit external bus interface with dynamic sizing support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU32 - 32-bit M68000-family compatible core with 32-bit ALU, 32-bit registers, and LPSTOP/TBL instructions |
| Max Clock Frequency | 16 MHz - defines maximum instruction throughput and peripheral timing margins for synchronous interfaces |
| Address Bus Width | 32-bit (A31–A0) - supports up to 4 GB linear address space for large program/data memory mapping |
| Data Bus Width | 16-bit (D15–D0) - requires two cycles for 32-bit operand transfers; enables cost-optimized memory subsystems |
| DMA Channels | 4 independent channels - enables concurrent high-bandwidth data movement without CPU intervention |
| Serial Interfaces | 2 full-duplex UART/HDLC-capable channels - supports RS-232, RS-485, and protocol-transparent serial links |
| Timer Modules | 2 × 16-bit timers with gate, input capture, and output compare - provides precise event timing and PWM generation |
| JTAG Support | IEEE 1149.1 compliant TAP controller - enables boundary-scan testing and background debug mode (BDM) emulation |
Pinout & Package
MC68340CAG16E is housed in a 144-pin Ceramic Quad Flat Package (CQFP) with 0.635 mm lead pitch, designed for high-reliability industrial and avionics applications. Pin assignments follow the standard MC68340 signal layout defined in Section 2 of the User's Manual (UM Rev 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A23–A0 | Address Bus Outputs | Lower 24 bits of 32-bit address bus; A24–A31 multiplexed with data bus in extended mode |
| D15–D0 | Data Bus I/O | 16-bit bidirectional data path; carries instructions, operands, and peripheral register data |
| AS | Address Strobe | Indicates valid address on bus; initiates memory/peripheral access cycle timing |
| DS | Data Strobe | Valid during read/write data transfer; used with DSACK for cycle termination |
| R/W | Read/Write Control | Active-high for read, active-low for write - determines direction of data transfer |
| RESET | Asynchronous Reset Input | Forces CPU32 into initial state, clears internal registers, and halts execution until release |
| TIN1, TIN2 | Timer Input Pins | Accept external event signals for input capture or counter clocking (e.g., encoder pulses) |
| TOUT1, TOUT2 | Timer Output Pins | Generate PWM, one-shot, or periodic waveforms under timer module control |
| RxDA/RxDB | Serial Receive Inputs | Independent receive data inputs for Serial Module A and B - support asynchronous or synchronous protocols |
| TxDA/TxDB | Serial Transmit Outputs | Independent transmit data outputs for Serial Module A and B - configurable baud rate and framing |
| TCK, TMS, TDI, TDO | JTAG Test Interface | Standard IEEE 1149.1 boundary-scan signals for test, debug, and programming |
| CLKOUT | System Clock Output | Buffered version of internal system clock - used to drive external logic or peripherals |
Key Features
| Feature | Design Value |
|---|---|
| CPU32 Core with LPSTOP | Enables ultra-low-power sleep states with fast wake-up (< 1 µs) for battery-sensitive embedded control |
| Integrated DMA Controller | Offloads CPU from high-volume data transfers (e.g., serial buffering, memory copy), preserving real-time latency |
| Programmable Clock Synthesizer | Generates multiple synchronized clocks (CPU, bus, serial) from single crystal - eliminates external clock ICs |
| Two Independent Serial Modules | Supports dual-protocol operation (e.g., Modbus RTU + HDLC) without software arbitration or shared resources |
| System Integration Module (SIM) | Unifies interrupt control, watchdog, periodic timer, chip select, and bus arbitration - reduces external glue logic by >70% |
| Background Debug Mode (BDM) | Allows non-intrusive code download, breakpoint insertion, and register inspection via dedicated debug port |
Applications
| Industrial PLC Controller | Telecom Line Card |
|---|---|
Use Scenario: Real-time ladder logic execution with analog I/O scanning and fieldbus communication. IC Role / Device Role / Timing Role: Central controller executing deterministic scan cycles, managing serial Modbus/Profibus links, and servicing timer-triggered I/O updates. Use Value: CPU32 deterministic timing, dual serial ports, and integrated timers eliminate need for external UARTs and timing ICs - reducing BOM and board area. | Use Scenario: Protocol bridging between T1/E1 framing and packetized backhaul over Ethernet or ATM. IC Role / Device Role / Timing Role: Embedded processor handling HDLC frame assembly/disassembly, CRC calculation, and time-slot mapping. Use Value: Hardware-assisted serial modules with HDLC support and 4-channel DMA enable zero-CPU-overhead frame processing at line rate. |
| Avionics Data Concentrator | Medical Diagnostic Instrument |
Use Scenario: Aggregating ARINC 429 and discrete sensor data for flight management system reporting. IC Role / Device Role / Timing Role: High-integrity data concentrator with dual serial interfaces, watchdog supervision, and JTAG traceability. Use Value: IEEE 1149.1 compliance and built-in software watchdog meet DO-254/DO-178B tool qualification requirements for airborne systems. | Use Scenario: Coordinating multi-axis motor control, sensor acquisition, and display update in portable ultrasound units. IC Role / Device Role / Timing Role: Real-time motion controller synchronizing PWM outputs, ADC triggers, and serial display interface. Use Value: Dual 16-bit timers with gate inputs precisely align motor phase timing and echo sampling windows - critical for image resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar integrated processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68360CZP25E | Higher clock speed (25 MHz), added QUICC engine, integrated Ethernet MAC, larger package (240-pin PQFP) | Targets networking edge devices requiring packet processing; lacks CQFP ruggedness for harsh environments | Select when Ethernet connectivity and higher throughput outweigh mechanical reliability requirements |
| MPC823EZQ266D | PowerPC-based, 266 MHz, PCI interface, no native M68k compatibility, different toolchain and boot architecture | Suitable for Linux-capable gateway platforms; incompatible with legacy M68k firmware and assembly code | Select only for greenfield designs where PowerPC ecosystem and performance justify full software rework |
Compared with MC68340CAG16E, MC68360CZP25E offers higher bandwidth and networking features but sacrifices ceramic packaging and design continuity; MPC823EZQ266D delivers modern processing power but requires complete architectural re-architecting - making MC68340CAG16E optimal for long-lifecycle, reliability-critical M68k-based systems.
Availability
MC68340CAG16E is available at Aetrix Electronics and suitable for industrial automation, avionics data acquisition, medical instrumentation, and telecom line card applications requiring stable component supply across extended product lifecycles.
Supply support for MC68340CAG16E 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 in 2004.
The MC68340 belongs to the M68300 family of integrated microcontrollers, designed specifically for deterministic real-time control in resource-constrained, high-reliability systems where CPU32 compatibility, peripheral integration, and long-term availability are essential.
FAQ
What is the maximum operating frequency of the MC68340CAG16E?
The MC68340CAG16E is rated for a maximum system clock frequency of 16 MHz, as confirmed in Section 11 (Electrical Characteristics) and Section 12 (Ordering Information) of the official MC68340 User's Manual. This frequency governs CPU instruction execution, bus timing, and peripheral operation - all electrical parameters in the datasheet are specified at this speed. Exceeding 16 MHz violates the device's AC timing specifications and may cause undefined behavior or data corruption in the MC68340CAG16E.
Does the MC68340CAG16E support JTAG debugging?
Yes, the MC68340CAG16E fully supports IEEE 1149.1 JTAG boundary-scan testing and Background Debug Mode (BDM) via dedicated TCK, TMS, TDI, and TDO pins. Section 2.15 and Section 9 of the MC68340 User's Manual document its compliant TAP controller implementation, enabling in-circuit emulation, flash programming, and real-time register inspection without halting system operation - a key capability for validating and maintaining legacy MC68340CAG16E-based designs.
How many serial communication interfaces does the MC68340CAG16E integrate?
The MC68340CAG16E integrates two independent full-duplex serial modules (labeled Serial Module A and Serial Module B), each with dedicated Rx/Tx, RTS/CTS, and ready signaling pins. As detailed in Section 2.13 and Section 7 of the User's Manual, both modules support asynchronous (UART) and synchronous (HDLC, SDLC) protocols with programmable baud rates, framing, and error detection - enabling simultaneous multi-protocol communication without resource contention in the MC68340CAG16E.
What package type is used for the MC68340CAG16E?
The MC68340CAG16E uses a 144-pin Ceramic Quad Flat Package (CQFP) with 0.635 mm lead pitch, as specified in Section 12 (Mechanical Data) of the MC68340 Product Brief and User's Manual. This hermetically sealed ceramic package provides superior thermal stability, moisture resistance, and mechanical robustness compared to plastic alternatives - making it suitable for extended-temperature industrial, avionics, and medical applications where the MC68340CAG16E is commonly deployed.
Is the MC68340CAG16E pin-compatible with other MC68340 variants?
Yes, all MC68340 variants - including MC68340CAG16E, MC68340CAG20E, and MC68340CAG25E - share identical 144-pin CQFP pinouts and signal assignments per the MC68340 Family datasheet. The suffix "16E" denotes the 16 MHz speed grade, while "20E" and "25E" indicate 20 MHz and 25 MHz versions respectively; all maintain full pin-to-pin and software compatibility, allowing frequency upgrades without PCB redesign in the MC68340CAG16E footprint.
MC68340CAG16E 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 144-LQFP (20x20)
- Additional Interfaces:
- USART
MC68340CAG16E FAQ
1.How can I place an order for MC68340CAG16E through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68340CAG16E 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 MC68340CAG16E reliable?
The price and inventory of MC68340CAG16E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68340CAG16E is usually 5 days.
3.What payment methods are accepted for MC68340CAG16E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68340CAG16E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68340CAG16E?
MC68340CAG16E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68340CAG16E 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 MC68340CAG16E?
For technical support, including MC68340CAG16E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68340CAG16E requirements.
6.How does Aetrix verify that MC68340CAG16E is sourced from the original manufacturer or authorized distributors?
All MC68340CAG16E 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 MC68340CAG16E meets industry standards.
7.What is the process for return or replacement of MC68340CAG16E?
All MC68340CAG16E units undergo pre-shipment inspection (PSI). If there is an issue with MC68340CAG16E, 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 MC68340CAG16E part is unused and in its original packaging.
Return procedure for MC68340CAG16E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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