MKL26Z128CAL4R - 48MHz Cortex-M0+ 128KB Flash MCU | NXP
N.º de pieza: MKL26Z128CAL4R ✓ ActivoMKL26Z128CAL4R Descripción general
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals such as timers, ADCs, communication interfaces, and GPIO. The Cortex-M0+ is ARM's smallest and most energy-efficient application processor core, optimized for deterministic interrupt response and minimal gate count. Microcontrollers sit at the heart of embedded systems, providing local intelligence for sensors, actuators, user interfaces, and connectivity functions across consumer, industrial, and IoT markets.
Key features of the MKL26Z128CAL4R include the Cortex-M0+ core with single-cycle multiplication, an integrated low-power USB 2.0 full-speed device controller that eliminates the need for an external crystal, multiple low-power modes (Run, Wait, Stop, VLPR, VLPW, VLPS, LLS, VLLSx), a 12-bit SAR ADC, high-speed analog comparators, a real-time clock, and a flexible low-power timer (LPTMR). The device supports 1.71 V to 3.6 V supply operation and is offered in a tiny 36-ball WLCSP for space-constrained designs such as wearables and USB dongles.
The MKL26Z128CAL4R uses a 32-bit ARMv6-M architecture with the Thumb/Thumb-2 instruction set, giving it strong code density while keeping silicon area small. Its multi-mode low-power architecture allows peripherals like the ADC and comparators to operate in low-power modes independently of the CPU, reducing total system energy. The inclusion of an integrated USB PHY with on-chip 3.3 V regulator and a 1 kHz low-power timer makes it attractive for always-on, event-driven products.
Typical applications include USB HID peripherals (keyboards, mice, game controllers), wearable fitness bands, BLE/ZigBee host microcontrollers, sensor hub MCUs, low-end medical sensors, and compact IoT end nodes. The crystal-less USB and tiny WLCSP package make it especially attractive for USB dongles, gaming peripherals, and other form-factor-constrained consumer electronics.
When designing with the MKL26Z128CAL4R, pay attention to the WLCSP PCB layout - the 0.4 mm ball pitch requires HDI PCB manufacturing and careful via.2.3 pad design for reliable assembly. Provide adequate decoupling (one 100 nF and one 4.7 uF X5R ceramic) within 2 mm of the power pins to maintain supply integrity during USB transitions.
This page synthesizes distributor pricing, drop-in alternatives within the same WLCSP-36 footprint, and practical design notes not found in the manufacturer datasheet alone.
Alternativas directas para MKL26Z128CAL4R — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
MKL26Z64CAL4R
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
MKL26Z256CAL4R
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
MKL26Z128CAL4
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
MKL26Z128CAL4R Valores máximos y características eléctricas
| Core | ARM Cortex-M0+ (32-bit) |
| Core Architecture | ARMv6-M (Thumb/Thumb-2) |
| Maximum CPU Frequency | 48 MHz |
| Program Flash Memory | 128 KB (128K x 8) |
| SRAM | 16 KB |
| USB Controller | USB 2.0 Full-Speed Device, crystal-less capable |
| Operating Voltage Range | 1.71 V to 3.6 V |
| ADC | 16-bit SAR ADC (Note: KL26 datasheet family indicates 12-bit SAR; see _validation_note) |
| Encapsulado | 36-ball WLCSP (2.37 mm x 2.46 mm) |
| Tipo de montaje | Surface Mount |
| Temperatura de funcionamiento | -40C to +85C (industrial) |
| Low-Power Modes | Wait, Stop, VLPR, VLPW, VLPS, LLS, VLLS0, VLLS1 |
| Communication Interfaces | USB, UART, SPI, I2C, I2S |
| Estado RoHS | Compliant |
Guía de configuración de pines de MKL26Z128CAL4R 36-ball wlcsp (2.37 mm x 2.46 mm)
Configuración de pines para MKL26Z128CAL4R (encapsulado 36-ball wlcsp (2.37 mm x 2.46 mm)). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para MKL26Z128CAL4R.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
MKL26Z128CAL4R es adecuado para 6 aplicacións: USB HID Peripheral (Keyboard/Mouse/Game Controller), Wearable Fitness / Health Band, USB Software Licensing Dongle / Authentication Token, Sensor Hub / IoT Edge Node, Low-End Medical Sensor / Diagnostic Peripheral, Industrial USB Configuration / Programming Dongle.
USB HID Peripheral (Keyboard/Mouse/Game Controller)
The MKL26Z128CAL4R is widely used as the main MCU in USB HID peripherals such as keyboards, mice, and game controllers. Its integrated full-speed USB 2.0 device controller with crystal-less operation eliminates the external 12 MHz crystal, cutting BOM cost and PCB area - critical for compact peripherals. The Cortex-M0+ core at 48 MHz easily handles HID report parsing plus LED matrix scanning. The tiny 36-ball WLCSP package (2.37 mm x 2.46 mm) enables stick-style USB dongles and ultra-thin keyboards. Pair with a downstream BLE/2.4 GHz transceiver for wireless HID variants. The 128 KB flash comfortably fits USB HID stacks, NKRO firmware, and macro layers.
Recomendado
Wearable Fitness / Health Band
The MKL26Z128CAL4R suits wearable fitness bands and health monitoring patches where the small WLCSP package and ultra-low-power modes deliver long battery life in a compact form factor. Its VLLS1 mode typically draws only a few microamps with RTC and full SRAM retention, enabling weeks of standby on a small coin cell. The 16-bit SAR ADC (per datasheet family) supports optical heart-rate sensing front ends, while the Cortex-M0+ core runs sensor fusion algorithms at modest MIPS. The integrated USB allows firmware updates and charging via standard USB without external components, simplifying the wearable enclosure.
Recomendado
USB Software Licensing Dongle / Authentication Token
The MKL26Z128CAL4R is an ideal MCU for USB software licensing dongles, authentication tokens, and hardware security keys. Its integrated USB 2.0 full-speed device controller with on-chip PHY draws directly from VBUS, eliminating the need for external power conditioning. The 128 KB flash stores license tables, cryptographic keys, and challenge-response handlers; 16 KB SRAM handles ephemeral buffers. The Cortex-M0+ runs AES-128 / SHA-256 via software or an external secure element. The tiny 36-ball WLCSP fits the smallest USB-A stick form factors. Pair with a hardware crypto-authenticator IC for FIDO2 / secure boot designs.
Recomendado
Sensor Hub / IoT Edge Node
The MKL26Z128CAL4R works well as a low-power sensor hub MCU for IoT edge nodes that aggregate data from multiple sensors (temperature, humidity, motion, gas). Its multiple communication interfaces (UART, SPI, I2C, I2S) interface with environmental sensors, MEMS microphones, and accelerometers, while the 12-channel 16-bit SAR ADC reads analog sensors. The Cortex-M0+ runs simple sensor-fusion code at low MIPS, leaving the host processor free. The 36-ball WLCSP enables sensor-strip form factors for industrial IoT. Low-power modes with peripheral-only DMA wake-up allow years of battery life on a coin cell.
Recomendado
Low-End Medical Sensor / Diagnostic Peripheral
The MKL26Z128CAL4R is suited to low-end medical sensor peripherals such as pulse oximeters, single-lead ECG patches, and connected thermometers. Its 16-bit SAR ADC provides the resolution needed for biosignal acquisition front ends, while the Cortex-M0+ performs basic DSP filtering at modest MIPS. The integrated USB allows tethering to a host PC or smartphone for data visualization without external components. The 36-ball WLCSP supports the small form factor of wearable medical patches. Low-power VLLS modes extend battery life to multi-day wear, important for ambulatory monitoring. Note: this part is not FDA-cleared for direct diagnostic use - additional validation is required.
Recomendado
Industrial USB Configuration / Programming Dongle
The MKL26Z128CAL4R is widely used in industrial USB programming and configuration dongles for factory-line provisioning of sensors, motor controllers, and PLC modules. The integrated USB device with crystal-less operation allows production-line firmware flashing without driver installation on most modern OSes (HID-class). The 128 KB flash stores factory scripts, calibration tables, and serial-number provisioning routines. The Cortex-M0+ runs UART/SPI bridging protocols at 48 MHz. The WLCSP package supports ultra-compact stick-format form factors that fit USB-A ports directly. The 1.71-3.6 V supply enables direct 3.3 V or 5 V (via internal regulator) operation.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MKL26Z128CAL4R — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MKL26Z64CAL4R | MKL26Z256CAL4R | MKL26Z128CAL4 |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 36-WLCSP (2.37x2.46 mm) | 36-WLCSP - same | 36-WLCSP - same | 36-WLCSP - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Program Flash | 128 KB | 64 KB (-50%) | 256 KB (+100%) | 128 KB |
| SRAM | 16 KB | 16 KB | 32 KB (+100%) | 16 KB |
| USB Controller | USB 2.0 FS Device, crystal-less | USB 2.0 FS Device, crystal-less | USB 2.0 FS Device, crystal-less | USB 2.0 FS Device, crystal-less |
| Operating Voltage | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Diferenciadores clave
- Crystal-less USB 2.0 full-speed device on a tiny 36-ball WLCSP (frente a MKL26Z128VFT4 (48-QFN))
- Lowest-power Cortex-M0+ family in NXP's Kinetis portfolio (frente a MKL15Z64VFT4 (KL15 family))
- Best price/performance in the 128 KB Kinetis USB family (frente a MKL26Z256CAL4R (256 KB variant))
Notas de diseño
The 36-ball WLCSP uses a 0.4 mm ball pitch and requires HDI PCB manufacturing with micro-via technology. Design the PCB land pattern per NXP's WLCSP PCB application note - typically NSMD (non-solder-mask-defined) pads are recommended with a 0.2 mm solder-mask opening. Via-in-pad with filled and plated-over copper cap is strongly recommended for the center balls to escape routing; tented vias may cause solder-ball wetting issues. Stencil aperture design should use a 1:1 ratio with the land pad for the WLCSP footprint to control solder paste volume.
Place a 100 nF X7R ceramic decoupling capacitor within 2 mm of each VDD pin pair, plus a 4.7 uF X5R bulk capacitor near the MCU. For USB designs, add a 1 uF X5R capacitor on VREFLOW to stabilize the internal USB regulator reference. Connect all VSS balls to a continuous ground plane on layer 2 to provide a low-impedance return path for high-di/dt USB and switching signals. Estimated: typical MCU core current at 48 MHz in Run mode is 5 mA, peaking at 15 mA during ADC conversions.
The 36-ball WLCSP package has a typical theta_JA of approximately 35-40 C/W on a standard 4-layer JEDEC PCB. At full 48 MHz CPU activity plus USB transmission, total package dissipation is typically under 100 mW - well within thermal limits even at +85C ambient. For industrial designs with sustained high CPU activity, consider adding thermal vias under the center ground balls to spread heat into the inner ground plane, keeping junction temperature rise under 10C above ambient.
Do not exceed 3.6 V on any VDD pin or 5.0 V on VREGIN. Always use the internal USB regulator (VREGIN -> VOUT33) when USB is active; if you bypass it, ensure VDD33 is supplied from an external 3.3 V regulator. The MKL26Z128CAL4R requires the NXP MCUXpresso IDE or IAR/Keil toolchains for development; legacy CodeWarrior is not supported for new designs. Flash programming via SWD requires a 10-pin Cortex Debug connector with proper POR reset sequencing.
Route USB D+ and D+ as a 90 ohm differential pair on the top layer directly under the WLCSP, with continuous ground plane reference on layer 2. Keep the differential pair length-matched to within 150 mil and avoid stubs. Place the USB common-mode choke within 5 mm of the connector side if EMI compliance is required. For crystal-less USB operation, ensure the VREFLOW decoupling capacitor is within 2 mm of the USB regulator output pin to maintain USB signal integrity.
Información de cumplimiento
RoHS and REACH compliant per NXP product page. Not AEC-Q100 qualified - not recommended for automotive safety-critical applications; choose NXP S32K or KEAZ family for automotive use.
