MC68HC16Z1MAG16 - 16-Bit 16MHz ROMless MCU | NXP
MPN: MC68HC16Z1MAG16 ✗ End of Life| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MC68HC16Z1MAG16 Overview
A microcontroller is a programmable semiconductor that integrates a central processing unit, memory, I/O, timers, interrupts, and communication peripherals on one package. The HC16 architecture provides a true 16-bit CPU and standard functional modules connected through an intermodule bus. The MC68HC16Z1 is described by NXP as a high-speed control unit with upward code compatibility with the 68HC11 family, making it relevant to embedded industrial, automotive, and legacy equipment designs.
The verified product information identifies the CPU16 architecture, 16-bit processing, 16 MHz operation, ROMless configuration, 1 KB RAM, 5 V supply, automotive temperature grade, and 144-pin LQFP package. Because the device is ROMless, external program memory is required to store executable firmware. The limited 1 KB RAM also makes external working-memory support a key system-level consideration when processing larger data structures or buffers.
The 68HC16Z1 architecture combines data-manipulation capability with peripheral subsystems. NXP describes its modules as communicating through a common intermodule bus, allowing the CPU and dedicated subsystems to exchange information within one integrated controller. This modular organization is useful for control systems that need deterministic embedded behavior, multiple I/O resources, and compatibility with an established 68HC software ecosystem.
Typical uses include industrial control equipment, automotive electronic modules, motor and actuator controllers, embedded instrumentation, and legacy 68HC11-compatible products. Final suitability depends on external memory, timing, peripheral availability, electrical limits, and software support that must be confirmed from the complete manufacturer datasheet before design release.
The most important design consideration is that this is not a pin-compatible modern MCU with abundant internal memory. Engineering teams should preserve external bus, address, timing, and memory interfaces from the original design and verify startup, interrupt, and peripheral migration requirements. Firmware development also requires suitable tools and libraries because the processor and peripheral ecosystem are legacy-oriented.
This page consolidates verified manufacturer and distributor information, lifecycle status, package characteristics, sourcing links, and engineering caveats. It does not invent unavailable electrical limits, pin assignments, memory maps, pricing, or replacement claims; missing engineering data remains explicitly identified for validation against the manufacturer documentation.
Drop-in alternatives for MC68HC16Z1MAG16 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MC68HC16Z1MAG16 (same form factor and footprint) — differing in Package, Architecture, Supply Voltage, Mounting Type, Program Memory Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC68CK16Z1CAG16
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View Datasheet →MC68HC16Z1MAG16 Maximum Ratings & Electrical Characteristics
| Device Type | CPU16 HC16 Microcontroller |
| CPU Architecture | 16-bit CPU16 |
| Maximum Clock Frequency | 16 MHz |
| Program Memory | 0 bytes ROM; external memory required |
| RAM | 1 KB |
| Supply Voltage | 5 V |
| Temperature Grade | Automotive |
| Package | 144-lead LQFP, 20 mm x 20 mm |
| Mounting Type | Surface mount |
| Lead Form | Gull wing |
| Package Shape | Square |
| Core | HC16 |
| Code Compatibility | Upward code compatible with the 68HC11 family |
| Internal Module Architecture | Common intermodule bus |
| Product Lifecycle | End of Life |
MC68HC16Z1MAG16 square Pin Configuration Guide
Pin configuration for MC68HC16Z1MAG16 (square package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MC68HC16Z1MAG16.
Refer to the datasheet for full pin configuration.
Typical Applications
MC68HC16Z1MAG16 is suitable for 6 applications: Legacy Industrial Control Systems, Automotive Electronic Modules, Motor and Actuator Control, Embedded Instrumentation, Legacy Communication Equipment, Equipment Maintenance and Repair.
Legacy Industrial Control Systems
The MC68HC16Z1MAG16 fits an existing industrial controller when the original firmware relies on 68HC11 code compatibility and the HC16 peripheral organization. Its 16 MHz CPU provides deterministic control throughput, while the 144-LQFP package exposes a broad lead count for external interfaces and memory. Because the device is ROMless, the designer must retain the established external program-memory arrangement and verify bus timing. Its 1 KB RAM is adequate only when the existing firmware already treats working memory as a scarce resource. For production continuation, preserve the original toolchain and validate every board revision against the NXP datasheet.
Recommended
Automotive Electronic Modules
The MC68HC16Z1MAG16 is applicable to sustaining an automotive electronic module already designed around its 16 MHz HC16 core, 5 V supply, and 144-lead LQFP interface. Distributor data identifies the temperature grade as automotive, but detailed temperature limits are not present in the supplied excerpts and must be checked in the datasheet. The ROMless architecture supports established external program memory, while only 1 KB of internal RAM constrains buffering and stack growth. Automotive repairs and module refurbishment should retain the original qualification evidence, firmware binaries, and board test fixtures because the manufacturer marks the device End of Life.
Recommended
Motor and Actuator Control
MC68HC16Z1MAG16 can be retained in an actuator controller whose timing and software were proven on the HC16 platform. The true 16-bit CPU and 16 MHz operating rate support interrupt-driven control logic, while the modular peripheral architecture provides a path to timers, I/O, and communications resources. Engineers must consult the complete datasheet for timer widths, PWM functions, pin multiplexing, and timing guarantees because those details are absent from the verified snippets. External program memory and the limited 1 KB RAM make deterministic task scheduling and buffer sizing especially important.
Recommended
Embedded Instrumentation
The MC68HC16Z1MAG16 can support legacy instrumentation when the product must continue using existing HC16 code and external memory interfaces. Its 16-bit architecture is appropriate for integer-heavy measurement and supervisory logic, and the large 144-LQFP package provides numerous external signal opportunities. However, the verified material does not identify analog inputs, converters, communication baud rates, or accuracy figures, so none should be assumed. A sustaining design should retain calibration tables, interrupt timing, and external data-acquisition hardware unchanged, then confirm electrical limits and peripheral assignments from the manufacturer documentation.
Recommended
Legacy Communication Equipment
MC68HC16Z1MAG16 remains viable in communication equipment built around its established peripheral map, external buses, and HC16 firmware. The 16 MHz 16-bit CPU can coordinate protocol handling and real-time control, but the 1 KB internal RAM is too limited to assume support for modern packet buffering without external memory. Before using the part in a communication redesign, verify every serial interface, baud-rate source, handshake line, interrupt vector, and electrical level against the original design. NXP's End of Life classification makes component preservation and software archival more important than expanding functionality.
Recommended
Equipment Maintenance and Repair
The MC68HC16Z1MAG16 is most defensible for repairing or maintaining equipment that already contains the exact HC16 controller. Retaining the original device minimizes PCB changes, software risk, and qualification effort in an otherwise unsupported legacy product. A repair organization should record the supplier, lot traceability, external-memory configuration, firmware revision, and electrical test result for each installation. Because no numeric pricing or confirmed stock quantity is present in the verified data, procurement should use a written quote and incoming inspection rather than assuming ordinary active-part availability.
Recommended
Recommended Products Summary
Engineering reference data for MC68HC16Z1MAG16 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC68CK16Z1CAG16 |
|---|---|---|
| Package | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) |
| Brand | NXP Semiconductors | NXP Semiconductors |
| CPU Architecture | 16-bit CPU16 HC16 | 16-bit CPU16 HC16 |
| Maximum Clock Frequency | 16 MHz | 16 MHz |
| Program Memory | ROMless; external memory required | ROMless; external memory required |
Key Differentiators
- Directly identified 68HC11-family code compatibility (vs MC68CK16Z1CAG16)
- Verified automotive-grade identity (vs MC68CK16Z1CAG16)
- Identified legacy HC16 platform (vs MC68HC908LJ12CFB)
Design Notes
Treat the external program-memory interface as a critical power path because MC68HC16Z1MAG16 is ROMless. Confirm the supply rail, external memory voltage, bus timing, reset behavior, and load current against the complete NXP datasheet before layout release. The verified distributor snippet identifies 5 V, but it does not provide input-voltage tolerances, absolute maximum ratings, or external-memory interface limits; those values must not be inferred from package or processor family alone.
For an existing board, preserve the original 144-LQFP footprint, escape routing, external address and data buses, control signals, decoupling, and exposed routing unless manufacturer documentation proves otherwise. The verified material confirms a 144-lead, 20 mm by 20 mm gull-wing LQFP but does not provide pin assignments. Obtain the official pinout and land pattern, then compare every connection rather than assuming that a similarly packaged HC16 part is interchangeable.
Do not interpret the ROMless designation as unused memory capacity or assume that 1 KB of RAM can support modern buffered control software. External program storage must be designed for the CPU bus, while stack and working-buffer allocation must remain within the verified 1 KB internal RAM or explicitly use compatible external storage. Archive the linker map, startup code, interrupt vectors, and exact firmware revision because active redesign may eventually become necessary for this End of Life component.
Compliance Information
The verified distributor data identifies an automotive temperature grade, but the supplied evidence does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. The automotive classification alone is not treated as proof of AEC-Q100 qualification.
