NXP Semiconductors MKS20FN128VLH12

Overview

MKS20FN128VLH12 from NXP Semiconductors is a 120 MHz ARM® Cortex®-M4 microcontroller with FPU, 128 KB flash, 64 KB SRAM, and single FlexCAN interface, designed for automotive body control, industrial sensor nodes, and low-power HMI applications requiring CAN connectivity and analog integration.

For engineers reviewing the MKS20FN128VLH12 datasheet, MKS20FN128VLH12 pinout, MKS20FN128VLH12 application, or MKS20FN128VLH12 equivalent, key selection criteria include its 64-pin LQFP package, –40 to 105 °C operating range, USB FS OTG with crystal-less operation, FlexIO configurability, and support for LPUART/LPI2C in VLPS mode.

Technical Context

The MKS20FN128VLH12 implements a single ARM Cortex-M4 core with DSP extensions and hardware FPU, delivering 1.25 Dhrystone MIPS/MHz at 120 MHz. Its memory subsystem includes 128 KB of embedded flash (2 KB pages) and 64 KB SRAM, both accessible at full CPU clock speed with zero wait states.

System-level timing is managed by the Multi-Purpose Clock Generator (MCG) with integrated PLL and FLL, supporting dual crystal oscillators (32 kHz RTC + 3–32 MHz main) and three internal clocks (32 kHz, 4 MHz, 48 MHz). Peripheral clocking is granularly gated via SIM module SOPT registers, enabling independent clock source selection per module - e.g., IRC48MCLK for USB, ERCLK32K for LPTMR.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 × 10 × 1.6 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MKS20FN128VLH12, MKS20FN256VLH12 offers scalable flash capacity without layout changes, while MKE15Z128VLH4 sacrifices CAN/USB for lower static current and bill-of-materials cost - making it suitable only for stripped-down deterministic control tasks.

Availability

MKS20FN128VLH12 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart home HMIs, and portable medical interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MKS20FN128VLH12 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 KS20 product line targets cost-optimized, low-power embedded applications requiring CAN, USB, and high-resolution analog integration - specifically engineered for automotive sub-systems and industrial control where functional safety and thermal robustness are essential.

FAQ

What is the maximum operating frequency of the MKS20FN128VLH12?

The MKS20FN128VLH12 operates at a maximum core frequency of 120 MHz using the ARM Cortex-M4 core with integrated PLL. This frequency is achievable across the full –40 to 105 °C temperature range and 1.71–3.6 V supply voltage, as validated in NXP's electrical characteristics testing per Rev. 3.1 datasheet.

Does the MKS20FN128VLH12 support crystal-less USB operation?

Yes, the MKS20FN128VLH12 supports crystal-less USB Full-Speed OTG operation using its internal 48 MHz IRC48M oscillator. This eliminates the need for an external 48 MHz crystal, reducing BOM count and PCB area while maintaining USB 2.0 compliance for enumeration and data transfer.

How many CAN interfaces does the MKS20FN128VLH12 include?

The MKS20FN128VLH12 includes exactly one FlexCAN module, as confirmed in the KS22/KS20 datasheet Table 1 and Figure 1. This distinguishes it from the KS22 variant (which has two CAN modules) and aligns with its positioning for cost-sensitive, single-bus automotive and industrial applications.

What analog-to-digital converter resolution and channel count does the MKS20FN128VLH12 provide?

The MKS20FN128VLH12 integrates a 16-bit SAR ADC with up to 14 single-ended input channels (ADC0_SE0–SE13) and 2 differential pairs (ADC0_DP0–DP1) usable only in single-ended mode on the 64-pin LQFP package. Maximum sampling rate is 1.2 Msps at ≤13-bit precision.

Is the MKS20FN128VLH12 pin-compatible with other KS20 or KS22 devices in the same package?

Yes, the MKS20FN128VLH12 shares identical pinout and package dimensions (64-pin LQFP, 10×10 mm, 0.5 mm pitch) with all other VLH12-suffixed KS20 and KS22 variants, including MKS20FN256VLH12 and MKS22FN128VLH12. Signal multiplexing and electrical characteristics are consistent across these parts per NXP's "Signal Multiplexing and Pin Assignments" section.