NXP Semiconductors MKE04Z8VFK4

Overview

MKE04Z8VFK4 from NXP Semiconductors is a 48 MHz Arm® Cortex-M0+ microcontroller with 8 KB flash, 1 KB RAM, and integrated analog peripherals including a 12-bit SAR ADC and dual analog comparators. It operates from 2.7–5.5 V across –40 to 105°C and supports low-power Stop mode with RTC and ADC wake-up-ideal for battery-powered industrial sensor nodes and motor control feedback loops.

For engineers reviewing the MKE04Z8VFK4 datasheet, MKE04Z8VFK4 pinout, MKE04Z8VFK4 application, or MKE04Z8VFK4 equivalent, key selection criteria include its 44-pin LQFP package, 48 MHz core clock, 12-bit ADC with Stop-mode operation, dual ACMPs with internal 6-bit DACs, and SWD debug interface compatibility with standard ARM toolchains.

Technical Context

The MKE04Z8VFK4 implements an Arm Cortex-M0+ core with single-cycle 32×32-bit multiply and bit-band aliasing for atomic memory access. Its clock system integrates a 4–24 MHz external crystal oscillator, internal FLL with 37.5 kHz pre-trimmed reference, and 1 kHz LPO for ultra-low-power Stop mode operation.

System-level features include three power modes (Run/Wait/Stop), programmable LVD with four warning thresholds, CRC module, and BME engine for efficient bit manipulation. Peripheral integration includes two I²C, three UART, two SPI, one 6-channel FTM, two 2-channel FTM, PIT, PWT, and RTC-all accessible via multiplexed GPIO on the 44-pin LQFP package.

Key Specifications

Pinout & Package

44-pin LQFP (10 mm × 10 mm, 0.8 mm pitch) with exposed thermal pad. Pin assignments follow KE04 family signal multiplexing; all GPIO support digital input/output, interrupt, and peripheral function mapping per datasheet Table 8-2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MKE04Z8VFK4, MKE04Z16VFK4 offers scalable code space without changing package or power profile, while MKE04Z8VLD4 shares identical memory but demands layout revision due to non-matching pin functions-neither is a drop-in replacement.

Availability

MKE04Z8VFK4 is available at Aetrix Electronics and suitable for industrial sensor nodes, motor control feedback systems, smart power outlets, and automotive body controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MKE04Z8VFK4 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The KE04 sub-family-including MKE04Z8VFK4-is designed for cost-sensitive, low-power embedded control applications requiring robust analog integration, real-time responsiveness, and extended temperature operation without external support components.

FAQ

What is the maximum operating frequency of the MKE04Z8VFK4?

The MKE04Z8VFK4 features an Arm Cortex-M0+ core rated for up to 48 MHz operation. This frequency is achieved using the internal FLL with either an external 4–24 MHz crystal/resonator or the internal 37.5 kHz reference. The bus clock runs at half-core speed (24 MHz), and all timing-critical peripherals-including FTM and UART-are synchronized to this bus clock. The MKE04Z8VFK4 maintains full specification compliance across its entire –40 to 105°C temperature range at 48 MHz.

Does the MKE04Z8VFK4 support debugging via SWD?

Yes, the MKE04Z8VFK4 includes a Serial Wire Debug (SWD) interface compliant with ARM CoreSight standards. It uses two dedicated pins-SWD_DIO and SWD_CLK-and requires no external reset line for programming or debugging. The interface supports full halt-mode debugging, memory inspection, register access, and flash programming at up to 24 MHz clock rate. SWD electrical specifications are validated across the full 2.7–5.5 V supply range and –40 to 105°C temperature range per NXP's KE04 Sub-Family Data Sheet Rev. 6.

Can the MKE04Z8VFK4 operate in Stop mode with the ADC active?

Yes, the MKE04Z8VFK4 supports ADC conversions during Stop mode. When configured with ADLPC=1, ADLSMP=1, ADCO=1, MODE=10B, and ADICLK=11B, the ADC draws only 86 µA (at 5 V) or 82 µA (at 3 V) in Stop mode while performing hardware-triggered conversions. This enables continuous sensor sampling without waking the core, making the MKE04Z8VFK4 suitable for ultra-low-power monitoring applications where average current must remain below 100 µA.

What analog peripherals are integrated into the MKE04Z8VFK4?

The MKE04Z8VFK4 integrates a 12-bit SAR ADC with up to 16 input channels and two analog comparators (ACMP). Each ACMP includes an internal 6-bit DAC for programmable reference generation and supports selectable hysteresis and interrupt output. The ADC supports hardware triggering, continuous conversion mode, and Stop-mode operation. Both ACMPs and the ADC are fully functional across the device's –40 to 105°C operating range and require separate analog supply (VDDA) decoupling per NXP's layout guidelines.

Is the MKE04Z8VFK4 pin-compatible with other KE04 family members?

No, the MKE04Z8VFK4 is not universally pin-compatible across the KE04 family. While it shares the 44-pin LQFP package with MKE04Z8VLD4, their pin assignments differ significantly-particularly for UART, SPI, and FTM signals-as documented in Section 8.2 of the KE04 Sub-Family Data Sheet. The MKE04Z8VFK4 also differs from 64-pin and 80-pin variants in both pin count and signal mapping. Migration requires verification against the specific pinout table for each target part.