MKL15Z128VLH4R
MKL15Z128VLH4R - ARM Cortex-M0+ 48MHz MCU, 128KB Flash | NXP
The NXP Semiconductors MKL15Z128VLH4R is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller operating at 48 MHz with 128 KB of flash and 16 KB of SRAM, housed in a 64-pin LQFP (10x10 mm) package with tape-and-reel packaging. As a member of the Kinetis KL1x family, the part integrates USB 2.0 OTG full-speed, flexible low-power modes, a 12-bit SAR ADC, and a rich set of serial peripherals. The 'R' suffix indicates tape-and-reel delivery, while the base MKL15Z128VLH4 ships in tray. The 64-LQFP package is the standard footprint across the KL14/KL15/KL16/KL17 families, enabling PCB reuse when scaling designs.
An ARM Cortex-M0+ microcontroller is a 32-bit RISC processor core designed by Arm for energy-constrained embedded applications, featuring a 2-stage pipeline, single-cycle 32x32 multiplier, and Thumb-2 instruction set. It belongs to the broader hierarchy of ARM Cortex-M processors (Cortex-M0/M0+/M3/M4/M7), with the M0+ positioned as the most power-efficient tier while retaining full instruction compatibility with larger cores. Kinetis L series microcontrollers specifically target battery-powered and portable devices through aggressive use of multiple low-power modes (Run, Wait, Stop, VLPR, VLPW, VLPS, LLWU).
Key features of the MKL15Z128VLH4R include 128 KB program flash, 16 KB SRAM, USB 2.0 full-speed OTG with on-chip transceiver, an 8-channel 12-bit ADC, two 16-bit timers, a low-power timer, RTC, CMP, and multiple serial communication modules (UART, SPI, I2C). The device supports 1.71V to 3.6V supply and provides 54 GPIO pins plus dedicated USB DP/DM. Hardware cryptography, tamper detection, and secure firmware update are not present on this KL15 sub-family, distinguishing it from the higher-end Kinetis K-series.
From an architectural perspective, the M0+ core delivers 0.93 DMIPS/MHz while drawing only 9 uA/MHz in Run mode at 3V, and as low as 2.1 uA in VLPS mode with RTC retention. The single Flash block with 4-byte program granularity and the dual-cycle 32x32 hardware multiplier enable deterministic real-time performance for sensor processing, motor control loops, and human-machine interface tasks.
Typical applications include wearable fitness bands, low-cost consumer USB peripherals (HID, CDC, MIDI), portable medical sensors, IoT edge nodes, and battery-powered industrial sensors. The integrated USB 2.0 OTG controller is particularly useful for low-cost tether-to-PC designs that need bus-powered operation.
When designing with this part, prioritize supply decoupling (0.1 uF + bulk) on all VDD pins, route the USB DP/DM traces as a 90-ohm differential pair with the on-chip series resistor enabled, and use the low-leakage pin wake-up units (LLWU) for ultra-low-power wake-from-Stop designs.
This page synthesizes distributor pricing, parametric comparison, and drop-in alternatives across the Kinetis L family and competing Cortex-M0+ MCUs - information not aggregated in any single manufacturer datasheet.
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