MC9S08SU16VFK - 40MHz 16KB 8-Bit MCU | NXP | Motor Control
MPN: MC9S08SU16VFK ✗ End of Life| Qty | Unit Price | Extended |
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MC9S08SU16VFK Overview
An 8-bit microcontroller is a compact embedded processor used to implement control logic, timers, communications, and peripheral functions in motor, appliance, and industrial products. The S08L core provides a deterministic architecture suitable for real-time control, while the integrated GDU and analog resources reduce the external component count required for basic motor-drive systems. MC9S08SU16VFK belongs to the broader MCU hierarchy: embedded processor, microcontroller, 8-bit MCU, and motor-control MCU.
Key features include the enhanced S08L central processing unit, 16 KB flash memory, 40 MHz operation, UHV technology with GDU, a three-phase MOSFET pre-driver unit, current-measurement amplifiers, over-current protection, and over-voltage protection. The verified distributor listings identify the device as a 24-QFN surface-mount part, while the available product data also identifies it as an NRND device.
The integrated three-phase pre-driver supports three high-side PMOS and three low-side NMOS arrangements, as described in the NXP datasheet search result. The current-measurement amplifiers, OCP, and OVP functions help simplify basic protection and feedback designs. Exact pin-level electrical limits, peripheral counts, memory organization, ADC specifications, and timing values require the manufacturer datasheet for final design verification.
Typical applications include small brushless DC motor controllers, low-voltage motor-control systems, appliance controls, and compact embedded control platforms. The 4.5 V to 18 V application range makes the MCU appropriate for systems powered from low-voltage motor buses, provided the designer verifies the exact supply, I/O, and thermal limits for the selected board.
For layout, place decoupling and power-return paths according to the NXP datasheet recommendations, and verify the exposed-pad connection and thermal design before production. Because the product is marked NRND in the verified NXP result, confirm lifecycle and sourcing status before committing a new design.
Drop-in alternatives for MC9S08SU16VFK — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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| Product Type | 8-bit S08L microcontroller |
| Core | S08L |
| Maximum CPU Frequency | 40 MHz |
| Flash Memory | 16 KB |
| Technology | UHV |
| GDU | Integrated gate-driver unit support |
| Supply Voltage Application Range | 4.5 V to 18 V |
| Package | 24-QFN (4x4 mm) |
| Mounting Type | Surface mount |
| Motor-Control Support | 3-phase MOSFET pre-driver unit |
| High-Side MOSFET Support | 3 high-side PMOS devices |
| Low-Side MOSFET Support | 3 low-side NMOS devices |
| Analog Feature | Current-measurement amplifiers |
| Protection Feature | OCP (over-current protection) |
| Protection Feature | OVP (over-voltage protection) |
| Product Category | Embedded Processors and Controllers > Microcontrollers |
| Lifecycle Status | NRND |
MC9S08SU16VFK 24-qfn (4x4 mm) Pin Configuration Guide
Pin configuration for MC9S08SU16VFK (24-qfn (4x4 mm) 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 MC9S08SU16VFK.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S08SU16VFK is suitable for 6 applications: Low-Voltage Brushless DC Motor Control, Small Appliance Motor Control, Embedded Fan and Pump Controller, Two-Phase and Three-Phase Power-Stage Control, Battery-Powered Low-Voltage Control, Hobby and Portable Motor Platforms.
Low-Voltage Brushless DC Motor Control
The MC9S08SU16VFK fits compact brushless DC motor controllers because its S08L core runs at up to 40 MHz and the family integrates a three-phase MOSFET pre-driver for three high-side PMOS and three low-side NMOS devices. The verified 4.5 V to 18 V application range is suitable for low-voltage motor systems. Current-measurement amplifiers, OCP, and OVP provide useful feedback and protection functions. Layout must still verify gate-drive timing, current limits, thermal behavior, and the exact pin assignments in the NXP datasheet.
Recommended
Small Appliance Motor Control
The MC9S08SU16VFK can support small appliance controllers where an 8-bit MCU, compact 24-QFN package, and integrated motor-control resources simplify the design. Its 16 KB flash and 40 MHz S08L core provide dedicated embedded control capability, while the GDU, current-measurement amplifiers, OCP, and OVP help implement a compact protection and feedback structure. The designer must confirm the motor voltage, current, switching topology, thermal limits, and whether the available 16 KB memory is sufficient for the production firmware.
Recommended
Embedded Fan and Pump Controller
The MC9S08SU16VFK is suitable for small fan or pump controllers that require compact embedded logic and motor-drive integration. The 8-bit S08L core can execute sequencing and control functions, while the three-phase pre-driver and measurement resources help reduce the number of external support blocks. Its 24-QFN (4x4 mm) package supports space-constrained boards, but the exact exposed-pad and pin requirements must be verified. Current sensing, protection thresholds, switching frequency, and power dissipation require design validation.
Recommended
Two-Phase and Three-Phase Power-Stage Control
The MC9S08SU16VFK is a logical candidate for evaluating compact power-stage controllers because the verified family data describes a three-phase MOSFET pre-driver with support for three high-side PMOS and three low-side NMOS devices. Integrated current-measurement amplifiers can assist feedback implementation, and OCP/OVP functions provide foundational protection. The device should be selected only after checking whether the selected motor topology, gate-drive requirements, dead-time strategy, and supply range are supported by the exact datasheet.
Recommended
Battery-Powered Low-Voltage Control
The MC9S08SU16VFK can be considered for low-voltage embedded control systems whose operating environment falls within the verified 4.5 V to 18 V motor-control application range. Its integrated GDU and analog resources may reduce external circuitry, while the compact 24-QFN package helps limit board area. Designers should still determine whether the MCU's internal regulators, I/O thresholds, sleep behavior, and supply current meet the battery system's requirements. Those details are not present in the verified snippets and must be checked in the official datasheet.
Recommended
Hobby and Portable Motor Platforms
The MC9S08SU16VFK is useful for compact hobby, portable, and educational motor platforms that need more integrated control resources than a basic GPIO-only microcontroller. The 40 MHz S08L core can support responsive control sequencing, and the 16 KB flash provides a defined code-storage starting point. The 24-QFN package is compact but requires careful PCB layout and soldering. Before publishing a design, verify memory requirements, bootloader support, peripheral availability, and pin multiplexing in the NXP documentation.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08SU16VFK — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08SU16VFK |
|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors |
| Package | 24-QFN (4x4 mm) | 24-QFN (4x4 mm) |
| Core | S08L | S08L |
| Maximum Frequency | 40 MHz | 40 MHz |
| Flash Memory | 16 KB | 16 KB |
| Application Voltage Range | 4.5 V to 18 V | 4.5 V to 18 V |
| GDU | Integrated gate-driver unit support | Integrated gate-driver unit support |
| Motor-Control Resources | Three-phase MOSFET pre-driver, current measurement, OCP, OVP | Three-phase MOSFET pre-driver, current measurement, OCP, OVP |
| Lifecycle Status | NRND | NRND |
Key Differentiators
- Integrated motor-control resources (vs MC9S08SU16VLC)
- 40 MHz S08L processing performance (vs MC9S08PA16VFK)
- Compact 4x4 mm package (vs MC9S08SU16VLC)
- Motor-control integration (vs MC9S08PA16VFK)
Design Notes
Design the power tree around the verified 4.5 V to 18 V motor-control application range, while treating that range as an application description rather than a substitute for absolute maximum ratings. Confirm the exact MCU supply limits, internal regulator behavior, I/O voltage domains, and power-sequencing requirements in the NXP datasheet. Estimated: power dissipation equals supply voltage times total current plus switching and gate-drive losses; calculate the final value using the actual motor and FET operating conditions.
Route the GDU and motor-power connections with very short loops and keep sensitive current-sense traces away from gate-drive and switching nodes. Confirm the QFN land pattern, exposed-pad connection, pin numbering, and thermal-via arrangement from the manufacturer package drawing. Because the verified snippets do not provide the complete pinout, do not finalize a footprint or routing plan until the official MC9S08SU16 datasheet is available.
Do not select a replacement based only on the phrase 8-bit MCU or the same nominal package. Firmware compatibility depends on the S08L core behavior, memory map, peripheral addresses, interrupt vector layout, pin multiplexing, GDU architecture, and electrical limits. Verify the complete datasheet and, where possible, perform hardware-in-the-loop testing with the production firmware before approving any substitute.
The 4x4 mm QFN package makes thermal design and exposed-pad layout important. The verified data does not provide thermal resistance, maximum junction temperature, or power dissipation values, so these must be obtained from the NXP datasheet and validated with the actual PCB copper area, ambient temperature, switching losses, and motor-drive workload. Estimated: junction rise depends on device dissipation multiplied by the effective thermal resistance of the assembled board.
Keep current-measurement paths short, properly referenced, and isolated from high-current switching edges. The integrated current-measurement amplifiers can simplify signal conditioning, but their usable bandwidth, input range, offset, and common-mode limits are not provided in the verified snippets. Confirm those specifications and the recommended external filtering and grounding in the manufacturer datasheet before setting protection thresholds.
Compliance Information
The verified search results identify the product as an NXP Semiconductors 8-bit microcontroller and mark it NRND, but they do not explicitly provide RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 declarations. Compliance fields remain unknown rather than inferred.