NXP Semiconductors MKL34Z64VLL4

Overview

MKL34Z64VLL4 from NXP Semiconductors (formerly Freescale) is a 48 MHz ARM Cortex-M0+ based microcontroller with 64 KB flash, 8 KB SRAM, and integrated segment LCD controller supporting up to 51 frontplanes × 4 backplanes. It delivers ultra-low-power operation down to 0.23 µA in VLLS0 mode with full state retention and 4.5 µs wakeup, targeting battery-powered industrial sensors and portable HMI devices.

For engineers reviewing the MKL34Z64VLL4 datasheet, MKL34Z64VLL4 pinout, MKL34Z64VLL4 application, or MKL34Z64VLL4 equivalent, key selection criteria include its 100-pin LQFP package, -40°C to +105°C operating range, dual UART/I²C/SPI interfaces, 12-bit SAR ADC, and low-power timer architecture optimized for energy-constrained embedded systems.

Technical Context

The MKL34Z64VLL4 implements a tightly coupled ARM Cortex-M0+ core with Bit Manipulation Engine and Micro Trace Buffer, executing from zero-wait-state flash memory. Its clock system integrates MCG with multiple modes (FEI, FBE, BLPI, BLPE) enabling dynamic switching between 48 MHz run and 4 MHz very-low-power run modes.

Power management includes nine low-power modes (VLPR, VLPS, LLS, VLLS0–3), programmable voltage regulators, and peripheral-specific clock gating. The segment LCD controller operates independently in VLLS1 with external 32 kHz crystal, while the 12-bit ADC supports low-power continuous conversion with programmable reference and comparator with integrated 6-bit DAC.

Key Specifications

Pinout & Package

100-pin LQFP (VLL package), 14 mm × 14 mm × 1.4 mm, 0.5 mm pitch. Pin assignments follow KL34 signal multiplexing defined in Freescale document KL34P100M48SF4 Rev 5.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MKL34Z64VLL4, MKL27Z64VLH4 trades LCD support and I/O count for compact packaging and extra RAM, while MKE15Z64VLL4 replaces LCD capability with higher-resolution analog peripherals-making MKL34Z64VLL4 uniquely suited for cost-sensitive, display-integrated industrial HMI designs.

Availability

MKL34Z64VLL4 is available at Aetrix Electronics and suitable for smart utility meters, industrial sensor nodes, portable medical devices, and home appliance control panels requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MKL34Z64VLL4 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 markets, with roots in Freescale's Kinetis portfolio.

The Kinetis KL34 family was designed as an entry-level 32-bit MCU platform delivering market-leading ultra-low-power performance and integrated segment LCD control for cost-sensitive, battery-operated human-machine interface applications.

FAQ

What is the maximum operating frequency of the MKL34Z64VLL4 core?

The MKL34Z64VLL4 features an ARM Cortex-M0+ core rated for up to 48 MHz operation in normal run mode. This frequency is achieved using the MCG in PEE mode with external crystal input, and the flash memory controller operates at zero wait states to sustain full throughput without pipeline stalls during code execution from flash.

Does the MKL34Z64VLL4 support external crystal oscillators?

Yes, the MKL34Z64VLL4 supports external crystal oscillators across two frequency ranges: 32 kHz to 40 kHz for RTC and low-power timing, and 3 MHz to 32 MHz for system clock generation. The MCG module provides automatic failover and trimming support, and crystal connections use dedicated EXTAL0/XTAL0 pins with configurable load capacitance via internal registers.

How many GPIO pins does the MKL34Z64VLL4 provide?

The MKL34Z64VLL4 provides 84 general-purpose input/output pins, distributed across five ports (PTA–PTE), as confirmed in the ordering information table and pin multiplexing documentation. All GPIOs support interrupt generation, digital glitch filtering, configurable pull-up/pull-down resistors (20–50 kΩ), and programmable drive strength for noise immunity in industrial environments.

What LCD configurations does the MKL34Z64VLL4 support?

The MKL34Z64VLL4 LCD controller supports two multiplexing configurations: 47 frontplanes × 8 backplanes or 51 frontplanes × 4 backplanes, enabling up to 288 segments. It includes integrated resistor bias network, charge pump, and frame rate control at 32 Hz, allowing direct drive of passive LCD glass without external components in applications like utility meters and appliance displays.

What is the lowest power consumption mode available on the MKL34Z64VLL4?

The MKL34Z64VLL4 achieves its lowest power consumption in Very Low-Leakage Stop Mode 0 (VLLS0), drawing as little as 0.23 µA at 3.0 V when SMC_STOPCTRL[PORPO] = 1. In this mode, full register and RAM state are retained, and wakeup occurs in 4.5 µs via RTC alarm, GPIO, or LLWU sources-enabling multi-year battery operation in always-on sensing applications.