NXP Semiconductors MKL33Z256VMP4

Overview

MKL33Z256VMP4 from NXP Semiconductors (formerly Freescale) is a 48 MHz ARM® Cortex®-M0+ microcontroller with 256 KB flash, 32 KB SRAM, and integrated segment LCD controller supporting up to 28×8 segments. It features a 1.2 V internal voltage reference, 16-bit 818 ksps ADC with internal Vref, and operates from 1.71–3.6 V across –40 to 105 °C for battery-powered industrial HMI applications.

For engineers reviewing the MKL33Z256VMP4 datasheet, MKL33Z256VMP4 pinout, MKL33Z256VMP4 application, or MKL33Z256VMP4 equivalent, key selection criteria include low-power run mode (54 µA/MHz), deep-sleep current (1.96 µA in VLLS3 with RTC retained), FlexIO-based peripheral emulation, and 64-pin MAPBGA (5×5 mm, 0.5 mm pitch) package compatibility.

Technical Context

The MKL33Z256VMP4 implements an ARM Cortex-M0+ core with Micro Trace Buffer and Bit Manipulation Engine, paired with a multi-mode clock system including 48 MHz high-accuracy internal reference (±0.5%) and 32–40 kHz/3–32 MHz crystal support. Its power architecture delivers six static low-power modes, down to VLLS0 (0.18 µA typ at 25 °C).

Peripherals include two low-power UARTs active in VLPS/STOP, dual I²C (up to 1 Mbit/s), dual SPI (up to 24 Mbit/s), one FlexIO module for custom serial protocol emulation (UART/IrDA/I²S/PWM), and a dedicated segment LCD controller with 28×8 or 32×4 drive capability - all accessible via 54 GPIOs (31 interrupt-capable, 6 high-drive).

Key Specifications

Pinout & Package

Package: 64-pin MAPBGA, 5 mm × 5 mm, 0.5 mm pitch, 1.23 mm thickness (package drawing 98ASA00420D1). Pinout validated per KL33P64M48SF6RM1 Rev.1 and data sheet Figure 5-2 (KL33 Family Pinouts).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MKL27Z256VLH4 and MKE15Z256VLH4, the MKL33Z256VMP4 uniquely integrates low-power segment LCD driving and achieves the lowest verified VLLS3 current (1.96 µA) among its direct Kinetis peers - making it the optimal choice for compact, long-life, display-intensive edge nodes.

Availability

MKL33Z256VMP4 is available at Aetrix Electronics and suitable for smart metering, portable medical instrumentation, industrial HMI panels, and asset tracking beacons requiring stable component supply and long-term lifecycle support.

Supply support for MKL33Z256VMP4 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 focused on secure connectivity solutions for automotive, industrial, IoT, and mobile applications.

The Kinetis KL33 series was designed specifically for cost-sensitive, battery-operated human-machine interface applications requiring integrated segment LCD control and ultra-low-power operation across extended temperature ranges.

FAQ

What is the maximum operating frequency of the MKL33Z256VMP4?

The MKL33Z256VMP4 features an ARM Cortex-M0+ core rated for up to 48 MHz operation. This frequency is supported by its high-accuracy internal 48 MHz reference clock (±0.5% tolerance), eliminating the need for an external crystal in many timing-critical applications. The MKL33Z256VMP4 maintains full peripheral functionality-including ADC sampling, FlexIO emulation, and LCD refresh-at this maximum clock rate.

Does the MKL33Z256VMP4 support external crystal oscillators?

Yes, the MKL33Z256VMP4 supports both 32–40 kHz crystals for RTC operation and 3–32 MHz crystals for system clock generation. These connect to the XTAL/EXTAL pins and are managed by the MCG-Lite clock module. External crystals improve timing accuracy and jitter performance compared to internal oscillators-critical for UART communication, audio interfaces, and precision metrology functions in the MKL33Z256VMP4.

How many ADC channels does the MKL33Z256VMP4 provide, and what is their resolution?

The MKL33Z256VMP4 integrates a single 16-bit successive-approximation ADC with up to 16 single-ended or 4 differential input channels. It achieves 818 ksps sampling rate and includes a high-accuracy internal 1.2 V voltage reference, enabling stable, ratiometric measurements without external reference components. This ADC configuration is fully supported in the MKL33Z256VMP4's 64-pin MAPBGA package.

What low-power modes are available on the MKL33Z256VMP4, and what is the lowest achievable current?

The MKL33Z256VMP4 offers six flexible low-power modes, including VLLS0 (0.18 µA typ), VLLS1 (0.66 µA typ), VLLS3 (1.96 µA typ with RAM + RTC retained), and VLPR (108–497 µA depending on clock configuration). The 1.96 µA VLLS3 current is the lowest verified value with full memory and real-time clock retention-making it ideal for infrequently awakened battery-powered devices using the MKL33Z256VMP4.

Is the MKL33Z256VMP4 pin-compatible with other Kinetis KL-series MCUs?

No, the MKL33Z256VMP4 is not pin-compatible with other Kinetis KL-series MCUs-even those in the same 64-pin MAPBGA package-due to differences in peripheral mapping, signal multiplexing, and power domain assignments. For example, MKL27Z256VLH4 uses LQFP and lacks LCD signals entirely, while MKL33Z256VMP4 dedicates specific pins to LCD segment/common outputs. Migration requires PCB redesign and firmware adaptation for the MKL33Z256VMP4.