NXP Semiconductors MKL15Z128CAD4R

Overview

MKL15Z128CAD4R from NXP Semiconductors (formerly Freescale) is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller designed for cost-sensitive, battery-powered embedded systems. It delivers 48 MHz CPU performance, 128 KB flash, 16 KB SRAM, 16-bit ADC with differential inputs, 12-bit DAC, and capacitive touch sensing - enabling precision analog control and human-machine interface in portable medical devices, smart sensors, and industrial edge nodes.

For engineers reviewing the MKL15Z128CAD4R datasheet, MKL15Z128CAD4R pinout, MKL15Z128CAD4R application, or MKL15Z128CAD4R equivalent, key selection considerations include its 1.71–3.6 V single-supply operation, -40 °C to 105 °C temperature range, 4-channel DMA support, low-power UART/SPI/I²C interfaces, and KL15-family pin compatibility across 32–80-pin LQFP/QFN packages.

Technical Context

The MKL15Z128CAD4R implements a 48 MHz ARM Cortex-M0+ core with 2-stage pipeline and single-cycle I/O access, enabling fast interrupt response and efficient bit manipulation via integrated Bit Manipulation Engine (BME). Its memory subsystem includes 128 KB flash with 64 B cache and 16 KB SRAM, supporting execution from flash at full speed with optimized power efficiency.

Analog subsystem integration includes a 16-bit SAR ADC with 9 single-ended/2 differential channels, a 12-bit DAC with automatic waveform generation, and a high-speed comparator with 6-bit internal reference DAC. All analog peripherals operate in low-power modes, and the device supports wake-up on touch via its 9-channel TSI module.

Key Specifications

Pinout & Package

MKL15Z128CAD4R is housed in a 48-pin QFN package (7 mm × 7 mm, 0.5 mm pitch), designated by package code "FT". This thermally enhanced, lead-free RoHS-compliant package supports automated assembly and provides adequate I/O density for compact designs requiring analog integration and communication flexibility.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MKL15Z128CAD4R, MKL15Z64VFT4R offers reduced memory at lower cost but no upgrade path, while MKE15Z128VFT4R adds safety features at the expense of higher BOM cost and toolchain complexity - making MKL15Z128CAD4R optimal for non-safety-critical, resource-constrained embedded designs.

Availability

MKL15Z128CAD4R is available at Aetrix Electronics and suitable for portable medical sensors, smart industrial transmitters, energy-harvesting IoT nodes, and white-goods control panels requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for MKL15Z128CAD4R 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

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications. The company acquired Freescale Semiconductor in 2015, integrating its Kinetis portfolio into a broader MCU ecosystem.

MKL15Z128CAD4R belongs to the Kinetis L series - a family of ultra-low-power, mixed-signal ARM Cortex-M0+ MCUs engineered for cost-sensitive, battery-operated embedded systems demanding precision analog integration and scalable memory/peripheral options.

FAQ

What is the maximum operating frequency and voltage range of the MKL15Z128CAD4R?

The MKL15Z128CAD4R operates at a maximum CPU frequency of 48 MHz across a supply voltage range of 1.71 V to 3.6 V. Flash and analog peripherals remain fully functional down to 1.71 V, enabling reliable operation in brownout conditions common in battery-powered systems. Its wide voltage range simplifies power design by eliminating the need for intermediate regulators in many applications.

Does the MKL15Z128CAD4R support capacitive touch sensing, and how many channels are available?

Yes, the MKL15Z128CAD4R includes a dedicated Capacitive Touch Sensing Interface (TSI) with 9 input channels. It supports low-power touch polling and wake-on-touch from Very-Low-Power Stop (VLPS) mode, drawing less than 1 μA during active sensing. This capability enables robust, sealed front-panel interfaces in consumer and industrial products without mechanical switches.

What analog peripherals are integrated into the MKL15Z128CAD4R?

The MKL15Z128CAD4R integrates a 16-bit SAR ADC with 9 single-ended and 2 differential input channels, a 12-bit DAC with automatic waveform generation (square/triangle/sawtooth), and a high-speed analog comparator with 6-bit internal DAC reference. All analog blocks operate in low-power modes and support hardware averaging, making them suitable for precision sensor interfacing and closed-loop control.

Is the MKL15Z128CAD4R pin-compatible with other Kinetis L-series MCUs?

Yes, MKL15Z128CAD4R is pin-compatible with all other KL15-family members in the same 48-pin QFN (FT) package, including MKL15Z32VFT4R and MKL15Z64VFT4R. Pin-for-pin compatibility extends across memory variants, allowing hardware reuse and firmware scalability without PCB redesign - a key advantage for product families targeting different feature tiers.

What debug and trace capabilities does the MKL15Z128CAD4R provide?

The MKL15Z128CAD4R features 2-pin Serial Wire Debug (SWD) for programming and real-time debugging, plus a Micro Trace Buffer (MTB) that uses on-chip SRAM to capture instruction flow for lightweight program analysis. These capabilities enable rapid firmware validation and bug identification without requiring expensive external trace probes - essential for resource-constrained development teams.