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NXP Semiconductors MC68SEC000FU16
- Part No.:
- MC68SEC000FU16
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 64-QFP
- Datasheet:
-
MC68SEC000FU16.pdf
- Description:
- IC MPU M680X0 16MHZ 64QFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,483
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Product details
Overview
MC68SEC000 from Motorola (now NXP/Freescale) is a static 32-bit embedded microprocessor designed for ultra-low-power portable systems. It delivers 10/16/20 MHz operation at 3.3V or 5.0V, consumes only 0.5 µA in static standby mode, and features a 24-bit address bus with statically selectable 8-/16-bit data bus - enabling use in battery-operated handheld devices like PDAs and portable test equipment.
For engineers reviewing the MC68SEC000 datasheet, MC68SEC000 pinout, MC68SEC000 application, or MC68SEC000 equivalent, key selection considerations include its static architecture for clock-gating, pin-for-pin compatibility with MC68EC000, object-code compatibility across the M68000 Family, and dual-voltage support without external level-shifting.
Technical Context
The MC68SEC000 implements a fully static HCMOS version of the M68000 architecture, supporting full 32-bit internal registers and a 16-Mbyte linear addressing range. Its bus controller handles asynchronous transfers via AS, R/W, UDS/LDS, and DTACK signals, with built-in bus arbitration (BR/BG) and seven-level priority interrupt control including nonmaskable Level 7.
Processor status is signaled via FC2–FC0 outputs indicating user/supervisor mode and address space; system control includes HALT, RESET, BERR, and MODE pins for 8-/16-bit data width selection. The architecture supports memory-mapped I/O and 14 addressing modes, enabling efficient C-compiled code execution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | M68000-family 32-bit static design with eight 32-bit data/address registers |
| Address Bus | 24-bit unidirectional bus enabling 16 Mbyte linear addressing |
| Data Bus | Statically configurable 8- or 16-bit bidirectional bus (via MODE pin) |
| Supply Voltage | Supports both 3.3V and 5.0V operation without voltage translation |
| Standby Current | Typical 0.5 µA at 3.3V in static halt mode - enables long battery life |
| Clock Frequency | 10 MHz / 16 MHz / 20 MHz versions - deterministic timing with no minimum clock requirement |
| Interrupt Levels | Seven prioritized levels (IPL0–IPL2), including nonmaskable Level 7 with autovectoring (AVEC) |
Pinout & Package
MC68SEC000 is available in two 64-lead surface-mount packages: plastic Quad Flat Pack (QFP, 14.0 mm × 14.0 mm, 0.8 mm lead pitch) and Thin Quad Flat Pack (TQFP, 10.0 mm × 10.0 mm, 0.5 mm lead pitch). Both share identical pinout per Figure 3 in the product brief.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A23–A0 | Address Bus Output | 24-bit unidirectional address output; A3–A1 encode interrupt level during vector fetch |
| D15–D0 | Data Bus Bidirectional | 16-bit bidirectional data path; width selected statically by MODE pin |
| AS | Address Strobe | Indicates valid address on A-bus; initiates bus cycle timing |
| R/W | Read/Write Control | Active-high = read, active-low = write; defines data transfer direction |
| UDS/LDS | Upper/Lower Data Strobe | Enable byte-level access to D15–D8 (UDS) or D7–D0 (LDS) during 16-bit transfers |
| DTACK | Data Transfer Acknowledge | Externally generated signal confirming completion of asynchronous data transfer |
| HALT | Halt Request Input | Stops processor clock while preserving internal state - entry to low-power mode |
| RESET | Reset Input | Active-low synchronous reset initializing registers and starting execution at vector 0 |
Key Features
| Feature | Design Value |
|---|---|
| Static Core Architecture | Enables indefinite clock suspension with zero dynamic power - essential for battery-critical sleep states |
| Pin-for-Pin Compatibility with MC68EC000 | Allows drop-in replacement in existing MC68EC000 designs without PCB revision or layout change |
| Full M68000 Family Object-Code Compatibility | Executes unmodified binaries from MC68000, MC68010, MC68020, and MC68EC000 platforms |
| Dual-Voltage Operation (3.3V/5.0V) | Eliminates need for level shifters when interfacing with legacy 5V peripherals or modern 3.3V logic |
| Configurable 8-/16-Bit Data Bus | MODE pin selects bus width at power-up - simplifies interface to narrow or wide memory/peripherals |
Applications
| Personal Digital Assistants (PDAs) | Portable Test & Measurement Equipment |
|---|---|
|
Use Scenario: Handheld device requiring extended battery life between charges and deterministic real-time response to touch or sensor inputs. IC Role / Device Role / Timing Role: Main application processor executing OS and UI tasks; uses HALT mode between user interactions to minimize quiescent current. Use Value: 0.5 µA standby current extends operational runtime significantly versus dynamic processors; static design avoids clock jitter in timing-critical sampling routines. |
Use Scenario: Battery-powered multimeter or oscilloscope module needing reliable firmware execution and low-noise analog front-end synchronization. IC Role / Device Role / Timing Role: System controller managing ADC/DAC interfaces, display updates, and button polling; leverages DTACK for precise peripheral timing alignment. Use Value: Asynchronous bus protocol ensures robust communication with mixed-speed peripherals; 24-bit addressing supports large calibration lookup tables in flash. |
| Electronic Gaming Handhelds | Industrial Portable Data Terminals |
|
Use Scenario: Low-cost gaming console with cartridge-based ROM storage and monochrome LCD display. IC Role / Device Role / Timing Role: Game logic engine and display controller; uses memory-mapped I/O to drive LCD segments and read keypad matrix. Use Value: 14 addressing modes and 56 instruction types enable compact, high-performance assembly routines; 8-/16-bit bus flexibility matches ROM width without glue logic. |
Use Scenario: Ruggedized warehouse scanner running inventory management firmware with serial/USB host connectivity. IC Role / Device Role / Timing Role: Central controller handling barcode decode, wireless comms, and battery monitoring; uses IPL2–IPL0 for prioritized interrupt handling of scan triggers and comms events. Use Value: Seven-level interrupt hierarchy ensures timely response to time-sensitive events; FC0–FC2 status outputs simplify debug of memory access violations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded microprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68EC000 | Dynamic (non-static) core; higher standby current (~5 mA); requires continuous clock; same pinout and software compatibility | Not suitable for deep-sleep battery operation; better for cost-sensitive fixed-power systems with stable clock sources | Select MC68EC000 only if static low-power mode is unnecessary and lower unit cost is critical |
| MC68332 | Integrated QSM (Queued Serial Module), TIM (Time Processor Unit), and 8K RAM; no external bus interface; different instruction set | Targeted at real-time control (e.g., motor drives), not general-purpose computing; lacks external memory expansion | Choose MC68332 when on-chip peripherals and deterministic interrupt latency outweigh need for external memory scalability |
Compared with MC68EC000, the MC68SEC000 adds true static operation for µA-level standby but retains identical software and footprint; compared with MC68332, it sacrifices integrated peripherals and real-time modules for maximum flexibility in memory-mapped system design.
Availability
MC68SEC000 is available at Aetrix Electronics and suitable for personal digital assistants, portable test equipment, electronic gaming handhelds, and industrial portable data terminals requiring stable component supply and long-term obsolescence planning.
Supply support for MC68SEC000 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-reliability embedded microprocessors for industrial and consumer applications.
The MC68SEC000 belongs to the M68000 Family extension targeting ultra-low-power portable electronics - designed specifically to extend battery life while maintaining full software compatibility with legacy 68k-based systems.
FAQ
What is the primary power-saving mechanism of the MC68SEC000?
The MC68SEC000 achieves ultra-low power consumption through its fully static HCMOS design, which allows the clock to be stopped indefinitely while preserving all internal register and memory states. In static standby mode at 3.3V, the MC68SEC000 draws only 0.5 µA - enabling multi-week battery life in intermittently active portable devices. This behavior is triggered via the HALT input and does not require software reinitialization upon wake-up.
Is the MC68SEC000 pin-compatible with the MC68EC000?
Yes, the MC68SEC000 is pin-for-pin compatible with the MC68EC000 in both the 64-lead QFP and TQFP packages. Signal names, positions, and electrical characteristics match exactly, allowing direct hardware substitution without PCB modification. The MC68SEC000 maintains identical bus timing and control signal definitions (AS, R/W, UDS/LDS, DTACK), ensuring seamless integration into existing MC68EC000 designs.
Does the MC68SEC000 support both 3.3V and 5.0V operation simultaneously?
No, the MC68SEC000 operates from a single supply voltage - either 3.3V or 5.0V - selected at power-up. It is not a dual-supply device. However, its I/O structure is designed to tolerate mixed-voltage interfaces: when powered at 3.3V, it can safely interface with 5V-tolerant peripherals using appropriate external pull-ups or bus transceivers, and vice versa. The MODE pin configures data bus width, not voltage level.
How does the MC68SEC000 handle interrupt vectoring?
The MC68SEC000 provides seven programmable interrupt priority levels (IPL2–IPL0) and one nonmaskable Level 7 interrupt. During an interrupt acknowledge cycle, the processor samples IPL inputs to determine priority and asserts AVEC to enable automatic vector generation. Address lines A3–A1 reflect the active interrupt level, while A23–A4 and A0 go high - allowing external logic to place the correct vector address on the data bus for precise, low-latency exception handling in the MC68SEC000.
What development tools are supported for the MC68SEC000?
All third-party development tools certified for the MC68EC000 - including assemblers, C compilers, in-circuit emulators, and debuggers - are directly compatible with the MC68SEC000 due to full object-code and hardware compatibility. Motorola's High Performance Embedded Systems Source Catalog (BR729/D Rev. 4) lists validated toolchains. No toolchain modification is required to migrate from MC68EC000 to MC68SEC000 projects.
MC68SEC000FU16 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-QFP
- Series:
- M680x0
- Packaging:
- Tray
- Product Status:
- Obsolete
- Core Processor:
- EC000
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 16MHz
- Co-Processors/DSP:
- -
- RAM Controllers:
- -
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- -
- Ethernet:
- -
- SATA:
- -
- USB:
- -
- Voltage - I/O:
- 3.3V, 5.0V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-QFP (14x14)
- Additional Interfaces:
- -
MC68SEC000FU16 FAQ
1.How can I place an order for MC68SEC000FU16 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68SEC000FU16 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 MC68SEC000FU16 reliable?
The price and inventory of MC68SEC000FU16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68SEC000FU16 is usually 5 days.
3.What payment methods are accepted for MC68SEC000FU16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68SEC000FU16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68SEC000FU16?
MC68SEC000FU16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68SEC000FU16 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 MC68SEC000FU16?
For technical support, including MC68SEC000FU16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68SEC000FU16 requirements.
6.How does Aetrix verify that MC68SEC000FU16 is sourced from the original manufacturer or authorized distributors?
All MC68SEC000FU16 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 MC68SEC000FU16 meets industry standards.
7.What is the process for return or replacement of MC68SEC000FU16?
All MC68SEC000FU16 units undergo pre-shipment inspection (PSI). If there is an issue with MC68SEC000FU16, 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 MC68SEC000FU16 part is unused and in its original packaging.
Return procedure for MC68SEC000FU16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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