NXP Semiconductors SVF331R3K2CKU2R

Overview

SVF331R3K2CKU2R from NXP Semiconductors is a dual-core heterogeneous processor integrating an ARM Cortex-A5 (266 MHz) and ARM Cortex-M4 (133 MHz) on a single die, with 512 KB on-chip SRAM (ECC), dual 12-bit SAR ADCs (1 MS/s), and dual 10/100 Ethernet interfaces supporting IEEE 1588. It targets industrial HMI, programmable logic controllers, and real-time edge gateway applications requiring deterministic M4 control alongside A5-level application processing.

For engineers reviewing the SVF331R3K2CKU2R datasheet, SVF331R3K2CKU2R pinout, SVF331R3K2CKU2R application, or SVF331R3K2CKU2R equivalent, key selection considerations include its M4-primary execution mode, LQFP-EP 176 package with thermal pad, -40 °C to +85 °C automotive qualification, integrated TrustZone security, and dual FlexCAN3 interfaces for robust vehicle network integration.

Technical Context

The SVF331R3K2CKU2R implements a tightly coupled dual-core architecture where the Cortex-M4 serves as the primary real-time controller-executing time-critical tasks directly from TCM-while the Cortex-A5 handles higher-layer OS-based functions. Its memory subsystem includes 8/16-bit DRAM support (LPDDR2/DDR3 up to 400 MHz), dual Quad SPI with XIP, and 8/16-bit NAND Flash with ECC.

Security is enforced via ARM TrustZone, SNVS, RTIC, TZ Watchdog, and hardware-accelerated hashing/RNG. Power management leverages multiple stop/wait/run modes, peripheral clock gating, and low-voltage detection with programmable trip points to meet industrial energy constraints without compromising real-time responsiveness.

Key Specifications

Pinout & Package

LQFP-EP 176-pin package (24 mm × 24 mm × 1.6 mm) with exposed thermal pad; RoHS-compliant, moisture sensitivity level (MSL) 3, lead-free reflow profile compatible (peak 260 °C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-core heterogeneous processor applications.

Compared with SVF321R3K2CKU2, SVF331R3K2CKU2 delivers guaranteed M4-first execution and tighter real-time latency; versus SVF531R3K2CMK4, it trades raw throughput and memory bandwidth for simplified assembly, lower cost, and proven thermal performance in convection-cooled enclosures.

Availability

SVF331R3K2CKU2R is available at Aetrix Electronics and suitable for industrial HMI, programmable logic controllers, and automotive diagnostic tools requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant operation.

Supply support for SVF331R3K2CKU2R 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, and IoT markets, with deep expertise in ARM-based processors and embedded security.

The Vybrid VF3xxR series-including SVF331R3K2CKU2R-is designed specifically for cost-sensitive, thermally constrained industrial edge devices requiring real-time M4 control paired with Linux-capable A5 application processing in a single-package solution.

FAQ

What is the boot sequence of the SVF331R3K2CKU2R?

The SVF331R3K2CKU2R boots with the Cortex-M4 core first, executing from internal Boot ROM or external Quad SPI. The M4 initializes essential peripherals and can optionally configure and release the Cortex-A5 core. This M4-primary boot ensures deterministic startup for real-time control before any OS loads on the A5, making SVF331R3K2CKU2R ideal for safety-critical initialization sequences.

Does the SVF331R3K2CKU2R support IEEE 1588 Precision Time Protocol?

Yes, the SVF331R3K2CKU2R integrates IEEE 1588 timestamping logic within both Ethernet MACs, enabling hardware-accelerated PTP event message capture with sub-microsecond accuracy. This feature is fully supported in the SVF331R3K2CKU2R's dual 10/100 Ethernet subsystem and requires no external timestamping IC, reducing bill-of-materials and board area.

What package type and thermal characteristics does the SVF331R3K2CKU2R use?

The SVF331R3K2CKU2R uses an LQFP-EP 176-pin package (24 mm × 24 mm × 1.6 mm) with an exposed thermal pad. Its thermal resistance (θ_JA) is 29.5 °C/W under JEDEC JESD51-7 conditions, and it supports peak reflow temperatures up to 260 °C. The exposed pad must be soldered to a solid copper thermal plane for optimal junction temperature control in continuous operation.

How does TrustZone security operate on the SVF331R3K2CKU2R?

TrustZone on the SVF331R3K2CKU2R partitions memory, peripherals, and interrupts into secure and non-secure worlds using hardware-enforced address space controllers. Secure Non-Volatile Storage (SNVS) holds cryptographic keys, while the Real-Time Integrity Checker (RTIC) monitors secure memory regions. This architecture allows SVF331R3K2CKU2R to run trusted firmware and untrusted applications simultaneously with hardware-isolated execution contexts.

Can the SVF331R3K2CKU2R interface directly with LPDDR2 memory?

No-the SVF331R3K2CKU2R supports only DDR3 and LPDDR2 via its 8/16-bit DRAM controller, but LPDDR2 operation is explicitly documented for the VF5xxR family (e.g., SVF531R3K2CMK4), not the VF3xxR series. The SVF331R3K2CKU2R datasheet confirms DDR3 support up to 400 MHz and specifies LPDDR2 compatibility only for selected VF5xxR variants; therefore, LPDDR2 is not supported on SVF331R3K2CKU2R.