SCKL16Z128VLH4R - Kinetis KL16 MCU 128KB Flash LQFP-64
MPN: SCKL16Z128VLH4R ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.95 | $3.95 |
| 10 | $3.55 | $35.50 |
| 100 | $3.12 | $312.00 |
| 500 | $2.78 | $1,390.00 |
| 1,000 | $2.45 | $2,450.00 |
SCKL16Z128VLH4R Overview
What is an ARM Cortex-M0+ microcontroller? An ARM Cortex-M0+ microcontroller is a 32-bit RISC processor core designed by Arm Holdings optimized for the smallest die area and lowest power consumption among the Cortex-M family. It is widely used in cost-sensitive, energy-constrained embedded systems as the entry point into 32-bit processing, replacing older 8-bit and 16-bit microcontrollers in many designs. Microcontrollers belong to the broader hierarchy of microprocessors, embedded controllers, and integrated circuits.
Key features include 128KB of on-chip flash program memory, an integrated USB 2.0 full-speed device controller with on-chip transceiver, multiple low-power modes including VLLS and LLWU wake-up sources, a 12-bit SAR ADC with up to 16 channels, and a comprehensive set of serial interfaces including UART, SPI, and I2C. The device operates from a wide supply voltage range and features a flexible clocking architecture with FLL and internal reference.
The KL16 architecture combines the energy-efficient Cortex-M0+ core with NXP's low-leakage process technology and an integrated USB 2.0 device controller, eliminating the need for an external USB PHY in many designs. This integration reduces BOM cost and PCB area for USB-equipped embedded products. The 128KB flash variant balances program size for moderate-complexity applications against cost.
Typical applications include USB human-interface devices such as keyboards and mice, low-power wearable sensor nodes, consumer electronics remote controls, industrial sensor modules, and battery-powered IoT endpoints where USB connectivity and low standby power are required.
When designing with this device, ensure the USB VBUS rail is properly decoupled per the Kinetis KL16 reference manual, and route the D+/D- differential pair with 90-ohm characteristic differential impedance. Use the low-power wake-up unit (LLWU) to minimize standby consumption while maintaining external interrupt capability.
This page synthesizes distributor pricing, drop-in alternatives from the Kinetis family and cross-brand Cortex-M0+ MCUs, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for SCKL16Z128VLH4R — 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 SCKL16Z128VLH4R (same form factor and footprint) — differing in Series, Package, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MKL16Z128VLH4
✅ Drop-In✓ In Stock
$3.15 / Unit
View Datasheet →MKL16Z64VLH4
✅ Drop-In📋 Reference alternative (not in catalog)
MKL16Z256VLH4
✅ Drop-In✓ In Stock
$6.55 / Unit
View Datasheet →MKL26Z128VLH4
✅ Drop-In📋 Reference alternative (not in catalog)
MKL25Z128VLH4
✅ Drop-In📋 Reference alternative (not in catalog)
MKL36Z128VLH4
✅ Drop-In📋 Reference alternative (not in catalog)
SCKL16Z128VLH4R Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M0+ |
| CPU Bit Width | 32-bit |
| Maximum CPU Frequency | 48 MHz |
| Program Flash Memory | 128 KB |
| USB Controller | USB 2.0 Full-Speed Device with on-chip transceiver |
| ADC | 12-bit SAR |
| Operating Temperature | -40C to +125C |
| Package | 64-pin LQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Series | Kinetis KL16 Sub-Family |
SCKL16Z128VLH4R 64-pin lqfp (10x10 mm) Pin Configuration Guide
Pin configuration for SCKL16Z128VLH4R (64-pin lqfp (10x10 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 SCKL16Z128VLH4R.
Refer to the datasheet for full pin configuration.
Typical Applications
SCKL16Z128VLH4R is suitable for 6 applications: USB Human Interface Device (HID), Battery-Powered Wearable Sensor Node, Industrial Sensor Module with USB Diagnostics, Consumer Remote Control with USB Charging, IoT Endpoint with USB Connectivity, USB Audio Class Device (Headset Dongle).
USB Human Interface Device (HID)
The SCKL16Z128VLH4R's integrated USB 2.0 full-speed device controller with on-chip transceiver, 48 MHz Cortex-M0+ core, and 128 KB flash make it ideal for USB HID peripherals such as keyboards, mice, and game controllers. The integrated USB PHY eliminates the need for external components, reducing BOM cost. Place a 33 ohm series resistor and 90-ohm differential impedance pair on D+/D-. The 128 KB flash holds complete HID class drivers, descriptor tables, and application code. Low-power VLPS mode extends battery life for wireless HID dongles.
Recommended
Battery-Powered Wearable Sensor Node
The SCKL16Z128VLH4R's sub-microamp VLLS3 standby current, Cortex-M0+ energy efficiency, and 128 KB flash suit battery-powered wearable sensor nodes. Multiple low-power modes (Wait, Stop, VLPS, LLS, VLLS) combined with the Low-Leakage Wake-Up Unit (LLWU) enable multi-year coin-cell battery life for health monitors and fitness bands. The 12-bit ADC integrates sensor signals directly. Choose LQFP-64 for hand-rework and prototype-friendly assembly.
Recommended
Industrial Sensor Module with USB Diagnostics
The SCKL16Z128VLH4R's industrial -40C to +125C operating range, USB diagnostics port, and 128 KB flash make it suitable for industrial sensor modules requiring USB-based configuration, calibration, and data logging. The USB interface enables quick field servicing and firmware updates without JTAG access. Multiple serial interfaces (UART/SPI/I2C) connect to industrial sensors. The 12-bit ADC reads analog sensors with adequate precision for many control applications.
Recommended
Consumer Remote Control with USB Charging
The SCKL16Z128VLH4R's low-power operation and integrated USB enable consumer remote controls with USB-C charging, firmware updates, and HID class compatibility for universal remote applications. The Cortex-M0+ runs IR/RF transmit protocols at low CPU load, leaving 128 KB of flash headroom for advanced features like voice control or motion sensing via external SPI peripherals.
Recommended
IoT Endpoint with USB Connectivity
The SCKL16Z128VLH4R suits IoT endpoints needing USB tethering for initial provisioning, firmware updates, and debugging. The integrated USB supports CDC-ACM class for virtual COM port networking, MSD for drag-and-drop firmware updates, and vendor classes for proprietary protocols. The 128 KB flash accommodates TLS lite libraries and cloud-agent firmware. Multiple low-power modes support battery-only IoT deployments.
Recommended
USB Audio Class Device (Headset Dongle)
The SCKL16Z128VLH4R's USB isochronous transfer support and 48 MHz CPU enable USB Audio Class 1.0 devices such as USB headsets, audio adapters, and DAC dongles. The 128 KB flash holds USB Audio class drivers and basic DSP firmware. The 12-bit ADC with PGA handles microphone input, while I2S can output to external codecs for higher-quality playback. Low-power modes benefit portable audio devices.
Recommended
Recommended Products Summary
Engineering reference data for SCKL16Z128VLH4R — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MKL16Z128VLH4 | MKL16Z64VLH4 | MKL16Z256VLH4 | MKL26Z128VLH4 | MKL25Z128VLH4 | MKL36Z128VLH4 |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 64-pin LQFP (10x10 mm) | 64-pin LQFP (10x10 mm) - same | 64-pin LQFP (10x10 mm) - same | 64-pin LQFP (10x10 mm) - same | 64-pin LQFP (10x10 mm) - same | 64-pin LQFP (10x10 mm) - same | 64-pin LQFP (10x10 mm) - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Maximum Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 128 KB | 128 KB | 64 KB | 256 KB | 128 KB | 128 KB | 128 KB |
| USB Controller | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | No USB | USB 2.0 FS Device |
| Special Feature | Standard KL16 family | Tray format variant | Half flash | Double flash | Segment LCD controller | No USB | Segment LCD + USB |
| Shipping Format | Tape & Reel (R suffix) | Tray | Tray | Tray | Tray | Tray | Tray |
Key Differentiators
- Tape & reel shipping format for high-volume assembly (vs MKL16Z128VLH4)
- USB 2.0 full-speed device controller with integrated PHY (vs MKL25Z128VLH4)
- Standard KL16 vs KL26 with segment LCD (vs MKL26Z128VLH4)
Design Notes
The KL16 USB VBUS pin must be connected through a 5V-to-3.3V regulator (e.g., NXP's MC33269 or equivalent LDO). The on-chip USB transceiver draws up to 25 mA when active. Use a 4.7uF bulk capacitor and 0.1uF ceramic decoupling on VBUS per the Kinetis KL16 reference manual. For bus-powered designs, ensure the device can source sufficient current from VBUS without exceeding 100 mA USB spec limits.
Route the USB D+ and D- signals as a 90-ohm differential pair with matched lengths to within 150 mil. Place the 33-ohm series resistors and 15 kohm pull-up on D+ within 4 mm of the MCU. Keep the pair away from noisy switching signals and provide a ground reference plane on an adjacent layer. The LQFP-64 requires a continuous ground plane under the device for thermal dissipation.
Place the 32.768 kHz external crystal within 5 mm of the XTAL32 pins, with symmetric traces and a ground guard ring for low-power RTC accuracy. The main 8 MHz crystal or resonator should similarly be close to the XTAL0 pins. Use a local ground island for the analog reference (VREF) and ADC supply filtering to achieve 12-bit ADC accuracy.
Do not skip the SWD (Serial Wire Debug) header on prototype boards - all KSW programming and debugging uses SWD, not JTAG. Forgot to enable the low-leakage wake-up unit (LLWU) registers in low-power modes can prevent external interrupts from waking the core. Always configure the System Integration Module (SIM) clock gating registers before peripheral use, or peripherals will not respond.
Compliance Information
RoHS compliant per NXP product page. Lead-free LQFP-64 package with matte-tin plating. Not AEC-Q100 qualified - use MKL16Z128VLH4 CAL/test grade parts for automotive.
