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NXP Semiconductors SVF321R3K1CKU2
- Part No.:
- SVF321R3K1CKU2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- -
- Datasheet:
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SVF321R3K1CKU2.pdf
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- 32-BIT DEVICES FOR ADVANCED CONN
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Product details
Overview
SVF321R3K1CKU2 from NXP Semiconductors (formerly Freescale) is a dual-core heterogeneous SoC integrating an ARM Cortex-A5 running at 266 MHz and an ARM Cortex-M4 running at up to 133 MHz, with 512 KB on-chip SRAM (ECC), dual 12-bit SAR ADCs (1 MS/s), and dual 12-bit DACs - deployed in industrial HMI, gateway controllers, and secure edge nodes requiring real-time + application processing.
For engineers reviewing the SVF321R3K1CKU2 datasheet, SVF321R3K1CKU2 pinout, SVF321R3K1CKU2 application, or SVF321R3K1CKU2 equivalent, key selection criteria include verified A5+M4 coherency support, -40°C to +85°C automotive-qualified operation, LQFP-EP 176-pin package compatibility, and integrated TrustZone security for secure boot and runtime isolation.
Technical Context
The SVF321R3K1CKU2 implements asymmetric multiprocessing (AMP) with hardware-enforced cache coherency between its Cortex-A5 and Cortex-M4 cores, enabling deterministic real-time control (M4) alongside Linux-capable application processing (A5). It integrates dual 10/100 Ethernet MACs with IEEE 1588 timestamping, dual FlexCAN3 controllers, and dual USB OTG PHYs - all operating under a unified clock tree with low-jitter digital PLLs.
Its memory subsystem includes an 8/16-bit DRAM controller supporting LPDDR2/DDR3 up to 400 MHz (ECC on 8-bit only), dual Quad SPI with XIP, and 8/16-bit NAND Flash controller with ECC - all accessible via the 32-bit FlexBus interface. Security is enforced through ARM TrustZone, SNVS, RTIC, and hardware-accelerated hashing and RNG.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| A5 Core Speed | 266 MHz - fixed frequency for deterministic Linux execution and multimedia offload |
| M4 Core Speed | Up to 133 MHz - real-time deterministic response for motor control or sensor fusion | Operating Temp | -40°C to +85°C ambient - qualified for automotive and industrial environments without derating |
| On-chip SRAM | 512 KB with ECC - protects critical firmware and data against single-bit errors in safety-critical tasks |
| ADC/DAC | Dual 12-bit SAR ADC (1 MS/s), dual 12-bit DAC - supports simultaneous analog I/O for closed-loop control and signal generation |
| Security | ARM TrustZone + SNVS + RTIC + hardware RNG - enables secure boot, encrypted storage, and runtime integrity verification |
| Ethernet | Dual 10/100 MAC with IEEE 1588 - provides time-synchronized communication for industrial automation and TSN-ready networks |
Pinout & Package
LQFP-EP 176-pin package (24 mm × 24 mm × 1.6 mm, exposed pad), RoHS-compliant, moisture sensitivity level (MSL) 3 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_3P3 | Main I/O supply | 3.0–3.6 V power rail for GPIO, UART, SPI, I²C, and peripheral logic - requires local 4.7 µF decoupling |
| VDD_1P2 | Digital core supply | 1.2 V regulated supply for A5/M4 cores and L1/L2 caches - sourced via external NPN ballast transistor driven by BCTRL |
| BCTRL | Ballast control output | Open-drain driver (≤20 mA, ≤VDDREG−0.5 V) controlling external NPN transistor base for 1.2 V core regulation |
| RTC_XTAL_IN / RTC_XTAL_OUT | 32 kHz crystal oscillator terminals | Connects to 32.768 kHz tuning-fork crystal for battery-backed real-time clock and low-power wake-up timing |
| ENET0_RXD0–3 / ENET0_TXD0–3 | Ethernet MAC0 data lanes | CMOS-level 10/100 MII interface signals - require controlled impedance routing (50 Ω ±10%) and length matching |
| FLEXCAN0_TX / FLEXCAN0_RX | FlexCAN3 controller channels | Differential CAN FD-capable transceiver interface - supports ISO 11898-1 compliant bus termination and filtering |
Key Features
| Feature | Design Value |
|---|---|
| ARM TrustZone + SNVS | Hardware-isolated secure world with tamper-resistant non-volatile storage for cryptographic keys and secure boot images |
| Dual Ethernet + IEEE 1588 | Hardware timestamping with sub-microsecond precision enables precise network synchronization for motion control and PLC coordination |
| Coherent A5+M4 Architecture | Shared memory access with cache coherency allows zero-copy inter-core messaging and deterministic M4 interrupt latency (<100 ns) |
| QuadSPI with XIP | Direct code execution from external flash eliminates boot ROM dependency and reduces BOM cost for field-upgradable firmware |
| Hardware CRC + DMA | Dedicated CRC module accelerates checksum validation for OTA updates; dual 32-channel DMA enables concurrent peripheral transfers without CPU load |
Applications
| Industrial Gateway | Secure Edge Node |
|---|---|
Use Scenario: Protocol translation between Modbus RTU field devices and cloud MQTT brokers in factory automation. IC Role / Device Role / Timing Role: SVF321R3K1CKU2 acts as dual-role processor: Cortex-A5 runs Linux-based protocol stack and web server; Cortex-M4 handles real-time serial framing, CRC validation, and watchdog supervision. Use Value: Integrated dual Ethernet and FlexCAN3 eliminate external PHYs and transceivers; TrustZone isolates secure credential storage from application-layer vulnerabilities. | Use Scenario: Tamper-evident remote monitoring of utility metering infrastructure with encrypted data logging and over-the-air firmware updates. IC Role / Device Role / Timing Role: SVF321R3K1CKU2 serves as root-of-trust: Secure Non-Volatile Storage holds device identity keys; RTIC validates firmware integrity before each boot; hardware RNG seeds TLS handshakes. Use Value: On-chip ECC SRAM prevents silent data corruption in long-duration logging; dual 12-bit ADCs monitor analog sensor inputs (voltage, current, temperature) with 1 MS/s sampling for anomaly detection. |
| HMI Controller | Motor Control Gateway |
Use Scenario: Touch-enabled human-machine interface for HVAC control panels with graphical display, audio feedback, and local logic execution. IC Role / Device Role / Timing Role: SVF321R3K1CKU2 drives segmented LCD (40×4) and audio codec via SAI; Cortex-M4 processes touch interrupts and button debouncing with <5 µs latency; Cortex-A5 renders UI and manages network connectivity. Use Value: Integrated OpenVG GPU (not present in SVF321R3K1CKU2 per part number decode) is excluded; instead, dual DCUs support parallel TFT display output - enabling split-screen diagnostics and status overlays without external graphics IC. | Use Scenario: Centralized servo drive coordinator synchronizing multiple BLDC motors using EtherCAT or CANopen in packaging machinery. IC Role / Device Role / Timing Role: SVF321R3K1CKU2 functions as motion controller: Cortex-M4 executes PID loops and FTM-based PWM generation; Cortex-A5 manages trajectory planning and supervisory logic; IEEE 1588 timers align motor phase angles across distributed drives. Use Value: Dual 10/100 Ethernet with hardware timestamping ensures sub-100 ns jitter for synchronized motion; integrated dual 12-bit DACs generate analog reference voltages for current sensing amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-core heterogeneous SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SVF322R3K1CKU2 | Includes OpenVG GPU; identical A5@266 MHz + M4@133 MHz, same LQFP-176 package and pinout | Required when TFT display rendering (WVGA) is needed; adds ~150 mW active power vs. SVF321R3K1CKU2 | Select SVF322R3K1CKU2 only if GPU-accelerated UI rendering is mandatory; otherwise SVF321R3K1CKU2 reduces thermal load and BOM cost. |
| SVF331R3K1CKU2 | M4-primary architecture: M4 runs at full speed while A5 operates in low-power mode or is disabled; same package and peripherals | Optimized for ultra-low-latency deterministic control where A5 is used only for background tasks (e.g., diagnostics, logging) | Choose SVF331R3K1CKU2 when real-time determinism dominates system requirements; SVF321R3K1CKU2 better suits balanced A5+M4 workloads. |
Compared with SVF321R3K1CKU2, SVF322R3K1CKU2 adds GPU capability at higher power and cost, while SVF331R3K1CKU2 shifts architectural priority to M4 determinism - making SVF321R3K1CKU2 the optimal choice for symmetric dual-core applications requiring equal compute weight on both cores.
Availability
SVF321R3K1CKU2 is available at Aetrix Electronics and suitable for industrial gateways, secure edge nodes, HMI controllers, and motor control gateways requiring stable component supply across extended product lifecycles.
Supply support for SVF321R3K1CKU2 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 SoCs and edge AI acceleration.
The Vybrid VF3xxR series - including SVF321R3K1CKU2 - was designed to deliver scalable, secure, and power-efficient heterogeneous processing for industrial edge devices requiring real-time responsiveness and Linux application support.
FAQ
What is the maximum operating frequency of the Cortex-A5 core in SVF321R3K1CKU2?
The Cortex-A5 core in SVF321R3K1CKU2 is factory-configured and rated for a maximum operating frequency of 266 MHz. This speed is guaranteed across the full -40°C to +85°C ambient temperature range and 3.0–3.6 V supply voltage, with no user-configurable overclocking capability. The 266 MHz rating reflects the specific speed binning applied during manufacturing for this part number, distinct from higher-speed variants like SVF521R3K1CMK4 (400 MHz).
Does SVF321R3K1CKU2 include hardware support for IEEE 1588 Precision Time Protocol?
Yes, SVF321R3K1CKU2 includes dedicated IEEE 1588 timer hardware per Ethernet MAC interface. Each timer provides hardware timestamping for PTP event messages with sub-microsecond resolution and low jitter, enabling precise network synchronization in industrial automation applications. This functionality is implemented in the Ethernet subsystem and does not require CPU intervention for timestamp capture or correction.
What type of external memory interfaces does SVF321R3K1CKU2 support?
SVF321R3K1CKU2 supports four external memory interfaces: (1) 8/16-bit DRAM controller for LPDDR2/DDR3 up to 400 MHz (ECC supported only on 8-bit mode); (2) 8/16-bit NAND Flash controller with ECC (8-bit only); (3) dual Quad SPI with Execute-In-Place (XIP) capability; and (4) 8/16/32-bit FlexBus for legacy parallel peripherals. All interfaces are independently configurable and accessible simultaneously.
Is SVF321R3K1CKU2 pin-compatible with other VF3xxR family members in the same package?
Yes, all VF3xxR parts in the LQFP-EP 176 package - including SVF321R3K1CKU2, SVF322R3K1CKU2, and SVF331R3K1CKU2 - share identical pinouts and mechanical footprints. Signal assignments, power domains, and thermal pad layout are fully compatible, allowing direct PCB reuse across these variants when selecting different feature sets (e.g., GPU inclusion or M4-primary configuration).
What security features are implemented in hardware on SVF321R3K1CKU2?
SVF321R3K1CKU2 implements multiple hardware security features: ARM TrustZone for secure world isolation, Secure Non-Volatile Storage (SNVS) for tamper-resistant key storage, Real-Time Integrity Checker (RTIC) for firmware image validation, TrustZone Watchdog (TZ WDOG), hardware Random Number Generator (RNG), and cryptographic hashing accelerators. These features operate independently of software execution and are active from power-on reset.
SVF321R3K1CKU2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Core Processor:
- -
- Number of Cores/Bus Width:
- -
- Speed:
- -
- Co-Processors/DSP:
- -
- RAM Controllers:
- -
- Graphics Acceleration:
- -
- Display & Interface Controllers:
- -
- Ethernet:
- -
- SATA:
- -
- USB:
- -
- Voltage - I/O:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
- Additional Interfaces:
- -
SVF321R3K1CKU2 FAQ
1.How can I place an order for SVF321R3K1CKU2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SVF321R3K1CKU2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SVF321R3K1CKU2 reliable?
The price and inventory of SVF321R3K1CKU2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SVF321R3K1CKU2 is usually 5 days.
3.What payment methods are accepted for SVF321R3K1CKU2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SVF321R3K1CKU2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SVF321R3K1CKU2?
SVF321R3K1CKU2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SVF321R3K1CKU2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SVF321R3K1CKU2?
For technical support, including SVF321R3K1CKU2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SVF321R3K1CKU2 requirements.
6.How does Aetrix verify that SVF321R3K1CKU2 is sourced from the original manufacturer or authorized distributors?
All SVF321R3K1CKU2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SVF321R3K1CKU2 meets industry standards.
7.What is the process for return or replacement of SVF321R3K1CKU2?
All SVF321R3K1CKU2 units undergo pre-shipment inspection (PSI). If there is an issue with SVF321R3K1CKU2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SVF321R3K1CKU2 part is unused and in its original packaging.
Return procedure for SVF321R3K1CKU2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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