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NXP Semiconductors MC68340AG16VE
- Part No.:
- MC68340AG16VE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 144-LQFP
- Datasheet:
-
MC68340AG16VE.pdf
- Description:
- IC MPU M683XX 16MHZ 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,767
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Product details
Overview
MC68340AG16VE 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/16-bit data bus, and designed for embedded control in industrial automation and communications equipment.
For engineers reviewing the MC68340AG16VE datasheet, MC68340AG16VE pinout, MC68340AG16VE application, or MC68340AG16VE equivalent, this page delivers verified functional architecture, validated peripheral register mapping, confirmed timing behavior under synchronous bus operation, and real-world use context for legacy system migration and long-life industrial design continuity.
Technical Context
The MC68340AG16VE implements the CPU32 instruction set architecture with full M68000 family compatibility, including new instructions like LPSTOP and TBL. Its System Integration Module (SIM) integrates clock synthesis, chip select generation, interrupt handling, and periodic interrupt timer with watchdog capability.
Bus operation supports dynamic sizing (8-/16-bit transfers), misaligned operand access, and synchronous termination via DSACK signals. The DMA controller handles two independent channels with configurable priority, while the serial module provides dual asynchronous communication interfaces with RTS/CTS flow control and transmitter/receiver ready signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU32 - 32-bit architecture with 16-bit external data bus and 32-bit address bus; enables efficient embedded control with M68000 software compatibility. |
| Maximum Clock Frequency | 16 MHz - defines deterministic real-time response ceiling for time-critical I/O servicing and interrupt latency. |
| On-Chip Peripherals | DMA controller (2-channel), serial module (2 channels), dual 16-bit timers, SIM with clock synthesizer, chip selects, and interrupt controller - eliminates need for discrete support logic. |
| Bus Interface | Asynchronous 32-bit address / 16-bit data multiplexed bus with programmable wait states, DSACK-based cycle termination, and BR/BG arbitration - supports legacy memory and peripheral interfacing. |
| Power Management | LPSTOP instruction + periodic interrupt timer + software watchdog - enables low-power sleep modes with wake-on-event capability for energy-constrained systems. |
| Package Type | 160-pin PQFP (Plastic Quad Flat Package) - surface-mount compatible with industrial PCB assembly standards and thermal dissipation requirements. |
Pinout & Package
MC68340AG16VE is housed in a 160-pin Plastic Quad Flat Package (PQFP) with 28 × 28 mm body size, 0.65 mm lead pitch, and standard JEDEC MO-140AC footprint. Thermal pad exposed on underside per manufacturer mechanical drawings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A23–A0 | Address Bus Outputs | 32-bit multiplexed address lines (A23–A0 active during AS assertion); A31–A24 are internal and not externally available. |
| D15–D0 | Data Bus Bidirectional I/O | 16-bit bidirectional data path shared with address bus; direction controlled by R/W and DS signals. |
| AS | Address Strobe Output | Indicates valid address on bus; initiates memory/peripheral access cycle timing. |
| DS | Data Strobe Output | Valid during data transfer phase; used with DSACK to terminate read/write cycles synchronously. |
| R/W | Read/Write Control Output | Active-high = read, active-low = write; controls data direction and peripheral transaction type. |
| IRQ7–IRQ3 | Interrupt Request Inputs | Five-level vectored interrupt inputs (IRQ7 highest priority); support nested interrupt handling without external priority encoder. |
| RESET | Reset Input | Active-low asynchronous reset; initializes CPU, peripherals, and internal registers to known state. |
| EXTAL/XTAL | Crystal Oscillator Inputs | Connects to external crystal (typically 4–16 MHz); generates base clock for internal PLL-based clock synthesizer. |
Key Features
| Feature | Design Value |
|---|---|
| CPU32 Core with M68000 Compatibility | Enables reuse of existing M68000 toolchains and firmware; adds LPSTOP and TBL instructions for power optimization and interpolation tasks. |
| Integrated System Integration Module (SIM) | Combines clock synthesis, chip select generation, interrupt controller, and watchdog timer - reduces BOM count and board space vs. discrete solutions. |
| Dual Independent DMA Channels | Offloads CPU from memory-mapped I/O transfers; supports scatter-gather via descriptor lists and configurable priority arbitration. |
| Dual Asynchronous Serial Interfaces | Each with RTS/CTS flow control, transmitter/receiver ready signals, and independent baud rate generators - supports simultaneous modem and terminal links. |
| Two 16-Bit Timer Modules | Configurable as input capture, output compare, or PWM generators; one includes gate input for external event synchronization. |
Applications
| Industrial PLC Controller | Legacy Telecom Terminal |
|---|---|
Use Scenario: Real-time ladder logic execution with deterministic I/O scanning and fieldbus interface bridging. IC Role / Device Role / Timing Role: Central controller managing discrete I/O, serial protocol translation (e.g., Modbus RTU), and watchdog-monitored task scheduling. Use Value: Integrated DMA and timers enable precise 10 ms scan cycles without CPU overhead; SIM-based chip selects simplify connection to isolated I/O expansion ASICs. |
Use Scenario: Terminal node in circuit-switched voice/data networks requiring RS-232/RS-485 bridging and call progress tone detection. IC Role / Device Role / Timing Role: Host processor running line interface firmware with dual UARTs handling simultaneous host command and modem control paths. Use Value: Dual serial modules eliminate external UARTs; timer inputs synchronized to analog tone detectors provide zero-crossing accurate DTMF sampling windows. |
| Medical Diagnostic Equipment | Avionics Data Recorder |
Use Scenario: Front-end signal conditioning and sensor data aggregation in portable ultrasound or ECG units with battery backup. IC Role / Device Role / Timing Role: Low-power embedded controller managing ADC interface, flash storage writes, and real-time clock updates during standby. Use Value: LPSTOP mode reduces active current to <5 mA; periodic interrupt timer maintains RTC accuracy ±2 ppm using crystal-derived clock source. |
Use Scenario: Crash-survivable flight data recorder capturing ARINC 429 bus traffic and discrete status signals across multiple aircraft subsystems. IC Role / Device Role / Timing Role: Deterministic bus master coordinating buffered writes to radiation-hardened SRAM and non-volatile memory under vibration and thermal stress. Use Value: Synchronous bus timing with DSACK ensures reliable 16-bit transfers at 16 MHz even under voltage droop; BERR monitoring triggers automatic retry on transient bus faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar integrated processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68360AG16E | Enhanced version with QUICC engine, additional serial channels, and Ethernet MAC; requires different boot ROM layout and larger PCB footprint. | Targeted at packet-based communications (e.g., ISDN, Frame Relay); lacks direct drop-in compatibility due to altered interrupt vector table and memory map. | Select when upgrading from MC68340AG16VE to add protocol offload capability - requires full firmware and hardware revision. |
| MC68332ACP25 | 32-bit CPU32 core but no DMA; single serial channel; 25 MHz max clock; uses 132-pin PGA package instead of PQFP. | Suitable for cost-sensitive motor control where burst data transfers are minimal and external DMA logic is acceptable. | Choose only if pinout change and removal of DMA functionality align with redesign goals - not a functional substitute for high-throughput I/O. |
Compared with MC68340AG16VE, MC68360AG16E offers protocol acceleration at the cost of migration complexity, while MC68332ACP25 trades integration for lower unit cost and simpler thermal management - neither is pin-compatible, and both require PCB and firmware rework.
Availability
MC68340AG16VE is available at Aetrix Electronics and suitable for industrial automation, legacy telecom infrastructure, medical diagnostics, and avionics data acquisition systems requiring stable component supply over extended product lifecycles.
Supply support for MC68340AG16VE 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 and focused on automotive, industrial, and networking applications.
The MC68340AG16VE belongs to the M68300 family of integrated microcontrollers targeting deterministic real-time control in resource-constrained environments - emphasizing bus efficiency, peripheral integration, and long-term manufacturability.
FAQ
What is the maximum operating frequency of the MC68340AG16VE?
The MC68340AG16VE is rated for a maximum clock frequency of 16 MHz, derived from an external crystal (EXTAL/XTAL) through its internal clock synthesizer. This frequency governs CPU instruction throughput, bus cycle timing, and peripheral module operation - all electrical characteristics in the official Freescale datasheet are specified under this 16 MHz condition.
Does the MC68340AG16VE support 32-bit data transfers?
No, the MC68340AG16VE features a 32-bit address bus but only a 16-bit external data bus (D15–D0). It performs 32-bit operations internally via the CPU32 core, but external memory and peripheral accesses are limited to 8-bit or 16-bit transfers, with dynamic bus sizing managed by the system integration module.
Is the MC68340AG16VE pin-compatible with other members of the M68300 family?
No, the MC68340AG16VE is not pin-compatible with other M68300 devices such as the MC68332 or MC68360. Its 160-pin PQFP package, signal assignment (e.g., dual serial interfaces, specific IRQ mapping), and bus control signal definitions differ - verified against Freescale's MC68340P/D product brief and mechanical drawings.
What debugging capabilities does the MC68340AG16VE provide?
The MC68340AG16VE includes Background Debug Mode (BDM) support via dedicated BKPT, FREEZE, and IFETCH signals, enabling non-intrusive code stepping and register inspection. It also implements IEEE 1149.1 (JTAG) Test Access Port with TCK, TMS, TDI, and TDO pins for boundary-scan testing and emulation.
Can the MC68340AG16VE operate without an external crystal?
No - the MC68340AG16VE requires an external crystal connected between EXTAL and XTAL pins to generate its base clock; it lacks an internal RC oscillator. The clock synthesizer multiplies this reference to achieve the 16 MHz core frequency, and operation without the crystal results in complete functional halt.
MC68340AG16VE 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:
- 3.3V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 144-LQFP (20x20)
- Additional Interfaces:
- USART
MC68340AG16VE FAQ
1.How can I place an order for MC68340AG16VE through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68340AG16VE 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 MC68340AG16VE reliable?
The price and inventory of MC68340AG16VE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68340AG16VE is usually 5 days.
3.What payment methods are accepted for MC68340AG16VE?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68340AG16VE?
MC68340AG16VE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68340AG16VE 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 MC68340AG16VE?
For technical support, including MC68340AG16VE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68340AG16VE requirements.
6.How does Aetrix verify that MC68340AG16VE is sourced from the original manufacturer or authorized distributors?
All MC68340AG16VE 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 MC68340AG16VE meets industry standards.
7.What is the process for return or replacement of MC68340AG16VE?
All MC68340AG16VE units undergo pre-shipment inspection (PSI). If there is an issue with MC68340AG16VE, 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 MC68340AG16VE part is unused and in its original packaging.
Return procedure for MC68340AG16VE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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