NXP Semiconductors MKE04Z8VWJ4R

Overview

MKE04Z8VWJ4R 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 - deployed in industrial sensor nodes and motor control subsystems requiring low-power operation across –40 to 105°C.

For engineers reviewing the MKE04Z8VWJ4R datasheet, MKE04Z8VWJ4R pinout, MKE04Z8VWJ4R application, or MKE04Z8VWJ4R equivalent, this page delivers verified electrical specs, package mapping to 20-pin SOIC, validated peripheral timing, thermal resistance data (RθJA = 88°C/W), and real-world substitution guidance for embedded design validation and BOM optimization.

Technical Context

The MKE04Z8VWJ4R implements an internal clock system (ICS) with FLL-based 48 MHz system clock generation using either internal 37.5 kHz reference or external 32.768 kHz crystal/4–24 MHz resonator, supporting FEI/FBE clock modes. Its power management includes Run/Wait/Stop modes with sub-40 µA Stop current (5 V) and LVD with four programmable warning thresholds.

Peripherals include two FlexTimer/PWM modules (6-channel + 2-channel), one PIT, one RTC, SPI/I²C/UART interfaces, and a CRC engine. The device features bit manipulation (BME), SRAM bitbanding, and SWD debug - all operating within 2.7–5.5 V supply range and qualified for automotive-grade ambient temperature (–40 to 105°C).

Key Specifications

Pinout & Package

Package: 20-pin SOIC (7 mm × 12 mm), surface-mount, moisture sensitivity level 3 (MSL3), lead-free reflow compatible (260°C peak).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MKE04Z8VFK4R and MKE04Z8VTG4R, the MKE04Z8VWJ4R offers optimal balance of I/O count (20 pins), thermal performance in SOIC, and full peripheral complement - making it the preferred choice for industrial designs needing field-serviceable through-hole-compatible packaging without sacrificing feature set.

Availability

MKE04Z8VWJ4R is available at Aetrix Electronics and suitable for industrial sensor nodes, brushless DC motor control, automotive body controllers, and smart power outlets requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MKE04Z8VWJ4R 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 deep expertise in ARM-based microcontrollers and edge processing.

The KE04 sub-family - including MKE04Z8VWJ4R - was designed for cost-sensitive, low-power embedded applications demanding robust analog integration, real-time responsiveness, and extended temperature reliability in resource-constrained environments.

FAQ

What is the maximum operating frequency of the MKE04Z8VWJ4R?

The MKE04Z8VWJ4R operates at up to 48 MHz system clock frequency, achieved via its internal FLL using either the 37.5 kHz internal reference or an external 32.768 kHz crystal/4–24 MHz resonator. Bus clock runs at half that rate (24 MHz), and all timing-critical peripherals - including FTM, ADC, and communication modules - are synchronized to these clocks as specified in the KE04 Sub-Family Data Sheet Rev. 5.

Does the MKE04Z8VWJ4R support debugging during low-power modes?

Yes, the MKE04Z8VWJ4R supports Serial Wire Debug (SWD) in Run and Wait modes, but SWD is disabled in Stop mode to preserve ultra-low power consumption. To debug low-power behavior, developers use the WDOG or RTC to wake the device periodically, or configure debug halt-on-interrupt to capture entry into low-power states. The MKE04Z8VWJ4R's SWD_CLK supports up to 24 MHz, enabling fast program download and real-time variable inspection.

What are the valid external clock sources for the MKE04Z8VWJ4R oscillator?

The MKE04Z8VWJ4R supports two external clock source configurations: a 32.768 kHz crystal for low-power RTC operation, or a 4–24 MHz ceramic resonator/crystal for main system clock generation. The oscillator circuit allows selection between low-power and high-gain modes via configuration bits, and supports optional series resistors (up to 200 kΩ) for stability tuning - all validated across –40 to 105°C per the MKE04P24M48SF0 datasheet.

How much current does the MKE04Z8VWJ4R draw in Stop mode with ADC enabled?

In Stop mode with ADC enabled (ADLPC = 1, ADLSMP = 1, ADCO = 1, MODE = 10B, ADICLK = 11B), the MKE04Z8VWJ4R draws 86 µA typical at 5 V and 82 µA at 3 V, as measured across –40 to 105°C ambient. This includes base Stop current (2 µA) plus ADC-specific leakage adders. The ADC remains fully functional and can trigger wake-up on conversion completion, enabling event-driven sensing without CPU intervention.

Is the MKE04Z8VWJ4R pin-compatible with other KE04 family members?

No, the MKE04Z8VWJ4R is not pin-compatible with other KE04 variants - its 20-pin SOIC (WJ) package has unique pin assignments distinct from the 24-pin QFN (FK) and 16-pin TSSOP (TG) variants. While functional registers and memory maps are identical across the KE04Z8x series, PCB layout must be redesigned for each package. The MKE04Z8VWJ4R pinout is documented in Section 8.2 of the KE04 Sub-Family Data Sheet Rev. 5.