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NXP Semiconductors MC68SEC000AA16
- Part No.:
- MC68SEC000AA16
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 64-QFP
- Datasheet:
-
MC68SEC000AA16.pdf
- Description:
- IC MPU M680X0 16MHZ 64QFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,408
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Product details
Overview
MC68SEC000AA16 from Motorola (later Freescale) is a static 32-bit embedded microprocessor designed for ultra-low-power portable systems. It delivers pin-for-pin and object-code compatibility with the MC68EC000, operates at 16 MHz, supports 3.3V/5.0V supply, features a 24-bit address bus (16 MB addressing), and achieves 0.5 µA standby current - enabling use in battery-powered PDAs, handheld test equipment, and electronic games.
For engineers reviewing the MC68SEC000AA16 datasheet, MC68SEC000AA16 pinout, MC68SEC000AA16 application, or MC68SEC000AA16 equivalent, key selection criteria include static operation for clock-gating power control, 8-/16-bit data bus configurability via MODE pin, interrupt-level arbitration (IPL0–IPL2), autovectoring support (AVEC), and QFP/TQFP package footprint constraints for space-constrained designs.
Technical Context
The MC68SEC000AA16 implements a static HCMOS version of the M68000 architecture with full 32-bit internal registers and a 24-bit external address bus. Its execution unit supports 56 instruction types across 14 addressing modes and five data types, enabling efficient C-compiled code execution while maintaining binary compatibility with the broader M68000 Family.
Hardware-level power management is enabled by static design: the processor retains full internal state when CLK is halted, and low-power mode is entered via HALT assertion. Bus control uses asynchronous handshake signals (AS, DTACK, UDS/LDS, R/W), and interrupt handling includes seven priority levels with nonmaskable Level 7 and automatic vector generation via AVEC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Clock Speed | 16 MHz - defines maximum instruction throughput and real-time response latency in time-critical embedded tasks. |
| Supply Voltage | 3.3 V or 5.0 V - enables direct integration into mixed-voltage legacy or low-power systems without level-shifting. |
| Standby Current | 0.5 µA typical at 3.3 V - allows multi-week battery life in always-on standby states for portable devices. |
| Address Bus Width | 24-bit (A23–A0) - supports up to 16 MB linear memory mapping, sufficient for ROM/RAM-based firmware and small OS environments. |
| Data Bus Width | Configurable 8-/16-bit (D15–D0) - reduces PCB trace count and memory interface cost when paired with 8-bit peripherals or SRAM. |
| Interrupt Levels | 7 priority levels (IPL0–IPL2 inputs + Level 7 NMI) - enables deterministic real-time servicing of multiple peripherals without software polling. |
| Package Type | 64-pin Plastic QFP (14.0 mm × 14.0 mm, 0.8 mm pitch) - provides standard surface-mount assembly compatibility and thermal performance for passive-cooled applications. |
Pinout & Package
MC68SEC000AA16 is supplied in a 64-lead plastic Quad Flat Pack (QFP) with 0.8 mm lead pitch and 14.0 mm × 14.0 mm body size. Pin assignments are identical to the MC68EC000 in this package variant, supporting drop-in replacement in existing layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A23–A0 | Unidirectional address output | 24-bit address bus; during interrupts, A3–A1 encode IPL level, enabling hardware vector resolution without software polling. |
| D15–D0 | Bidirectional data I/O | 16-bit data path; width reduced to 8-bit when MODE = low, simplifying memory subsystem design. |
| AS | Address strobe output | Indicates valid address on A-bus; used by external logic to latch addresses synchronously with bus cycles. |
| R/W | Read/write control output | Directly controls direction of D-bus drivers and memory/IO device read/write timing. |
| UDS/LDS | Upper/lower data strobe outputs | Select byte lanes on 16-bit data transfers; essential for 8-bit peripheral interfacing and burst-mode memory access. |
| DTACK | Data transfer acknowledge input | Externally generated handshake signal confirming data validity; enables flexible wait-state insertion for slow peripherals. |
| HALT | Processor halt input | Stops clock propagation internally while preserving register and memory state - core mechanism for static low-power mode. |
| IPL0–IPL2 | Interrupt priority level inputs | Three-bit encoded input defining active interrupt level (0–7); enables hardware prioritization without CPU intervention. |
| AVEC | Autovector enable input | When asserted, directs processor to generate vector offset automatically based on IPL, eliminating software vector table lookup. |
| MODE | Bus width configuration input | Static selection of 8-bit (MODE = low) or 16-bit (MODE = high) data bus operation at reset. |
Key Features
| Feature | Design Value |
|---|---|
| PIN-FOR-PIN COMPATIBILITY WITH MC68EC000 | Enables direct PCB replacement in existing MC68EC000 designs without layout revision or signal routing changes. |
| STATIC ARCHITECTURE WITH CLOCK GATING | Allows complete suspension of internal clock while retaining full register and memory state - critical for zero-power sleep modes. |
| OBJECT-CODE COMPATIBILITY ACROSS M68000 FAMILY | Permits reuse of compiled firmware across MC68SEC000, MC68EC000, and higher-end 680x0 derivatives without recompilation. |
| CONFIGURABLE 8-/16-BIT DATA BUS | Reduces system BOM cost by enabling use of cheaper 8-bit memory or peripherals without glue logic. |
| HARDWARE INTERRUPT PRIORITY ENCODING | Offloads interrupt dispatch decision from firmware to silicon, reducing latency and jitter in real-time control loops. |
Applications
| Handheld Medical Instrumentation | Industrial Portable Data Logger |
|---|---|
|
Use Scenario: Battery-powered blood glucose meter with LCD display, button interface, and flash storage. IC Role / Device Role / Timing Role: Main system controller executing measurement algorithms, managing user input/output, and storing calibrated results. Use Value: 0.5 µA static standby current extends single-battery life to >12 months; 16 MHz speed ensures sub-second calculation response. |
Use Scenario: Ruggedized field logger capturing temperature, humidity, and pressure at 1 Hz over 72-hour deployments. IC Role / Device Role / Timing Role: Central data acquisition engine coordinating sensor reads, timestamping, and SPI flash writes. Use Value: Static operation allows deep-sleep between samples; 24-bit addressing supports onboard 4 MB data buffer. |
| Consumer Electronic Game Console | Smart Remote Control Hub |
|
Use Scenario: Low-cost handheld game unit with monochrome LCD, tactile buttons, and cartridge-based ROM. IC Role / Device Role / Timing Role: Game logic processor executing fixed-function firmware and driving display refresh. Use Value: Pin-compatibility with MC68EC000 enables reuse of mature toolchains; 16-bit bus mode accelerates sprite rendering. |
Use Scenario: IR/RF universal remote consolidating HVAC, AV, and lighting control with local scheduling logic. IC Role / Device Role / Timing Role: Embedded scheduler and protocol translator managing multiple wireless stacks and UI updates. Use Value: 8-bit bus configuration reduces PCB layer count; HALT-driven power gating cuts idle consumption below 1 µA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded microprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68EC000RC16 | Non-static CMOS implementation; 16 MHz max; no sub-µA standby - requires continuous clocking. | Lacks true low-power sleep; suitable only where constant operation or external power gating is acceptable. | Select MC68EC000RC16 only if board already uses non-static timing budget and battery life is not constrained. |
| MC68332ACPV16 | Integrated QSM (Queued Serial Module), TIM (Timer), and 32 KB on-chip RAM; 16 MHz; 5 V only; no 3.3 V option. | Higher integration reduces external component count but increases cost and eliminates voltage flexibility. | Choose MC68332ACPV16 when peripheral integration outweighs power savings and dual-voltage requirement. |
Compared with MC68EC000RC16, the MC68SEC000AA16 enables true zero-power retention sleep; compared with MC68332ACPV16, it offers lower system cost and dual-voltage operation at the expense of on-chip peripherals - making it optimal for cost-sensitive, battery-limited 32-bit control applications.
Availability
MC68SEC000AA16 is available at Aetrix Electronics and suitable for handheld medical instrumentation, industrial portable data loggers, consumer electronic game consoles, and smart remote control hubs requiring stable component supply across long-lifecycle embedded programs.
Supply support for MC68SEC000AA16 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 (later Freescale Semiconductor) was a pioneering developer of 32-bit microprocessors and embedded controllers, known for the M68000 family and automotive-grade ICs.
The MC68SEC000AA16 belongs to Motorola's static embedded microprocessor line, engineered specifically for ultra-low-power portable electronics where battery longevity and PCB space efficiency are primary constraints.
FAQ
What is the operating voltage range supported by the MC68SEC000AA16?
The MC68SEC000AA16 supports dual-supply operation at either 3.3 V or 5.0 V nominal. This flexibility allows direct integration into both modern low-voltage systems and legacy 5 V designs without level-shifting circuitry. The device maintains full functionality and timing specifications across both rails, and its 0.5 µA standby current is specified at 3.3 V - making it especially effective in energy-constrained applications where 3.3 V batteries are used.
Is the MC68SEC000AA16 pin-compatible with the MC68EC000?
Yes, the MC68SEC000AA16 is explicitly designed as a pin-for-pin replacement for the MC68EC000 in the 64-pin plastic QFP package. Signal names, pin locations, and electrical characteristics match identically, enabling drop-in substitution in existing PCB layouts. This compatibility extends to all control, address, data, and interrupt signals - including AS, DTACK, IPL0–IPL2, and AVEC - ensuring no hardware redesign is needed when upgrading to static low-power operation.
How does the MC68SEC000AA16 achieve ultra-low standby current?
The MC68SEC000AA16 achieves 0.5 µA typical standby current through its fully static HCMOS design, which permits complete cessation of internal clock distribution while preserving register contents and memory state. Entry into this mode is triggered by asserting the HALT input, halting all dynamic activity without loss of context. Unlike dynamic processors, no refresh cycles or leakage-mitigation circuits are required - making it ideal for applications where extended battery life depends on true zero-clock operation.
What package options are available for the MC68SEC000AA16?
The MC68SEC000AA16 is offered exclusively in the 64-lead plastic Quad Flat Pack (QFP) with 14.0 mm × 14.0 mm body size and 0.8 mm lead pitch. While the MC68SEC000 family also includes a Thin QFP (TQFP) variant, the "AA16" suffix specifically denotes the QFP version rated for 0°C to +70°C operation. This package supports standard reflow soldering and provides adequate thermal dissipation for passive-cooled embedded applications.
Does the MC68SEC000AA16 support both 8-bit and 16-bit data bus configurations?
Yes, the MC68SEC000AA16 supports configurable 8-bit or 16-bit data bus operation via the MODE input pin. When MODE is held low at reset, the processor operates in 8-bit mode (using D7–D0 only); when high, it enables full 16-bit transfers (D15–D0). This feature allows system designers to optimize memory subsystem cost and PCB complexity - for example, pairing the IC with inexpensive 8-bit SRAM or flash while retaining full 32-bit internal processing capability.
MC68SEC000AA16 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-QFP
- Series:
- M680x0
- Packaging:
- Bulk
- 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:
- -
MC68SEC000AA16 FAQ
1.How can I place an order for MC68SEC000AA16 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68SEC000AA16 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 MC68SEC000AA16 reliable?
The price and inventory of MC68SEC000AA16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68SEC000AA16 is usually 5 days.
3.What payment methods are accepted for MC68SEC000AA16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68SEC000AA16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68SEC000AA16?
MC68SEC000AA16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68SEC000AA16 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 MC68SEC000AA16?
For technical support, including MC68SEC000AA16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68SEC000AA16 requirements.
6.How does Aetrix verify that MC68SEC000AA16 is sourced from the original manufacturer or authorized distributors?
All MC68SEC000AA16 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 MC68SEC000AA16 meets industry standards.
7.What is the process for return or replacement of MC68SEC000AA16?
All MC68SEC000AA16 units undergo pre-shipment inspection (PSI). If there is an issue with MC68SEC000AA16, 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 MC68SEC000AA16 part is unused and in its original packaging.
Return procedure for MC68SEC000AA16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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