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Renesas AT25XV041B-UUVHR-T
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- Part No.:
- AT25XV041B-UUVHR-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-XFBGA, WLCSP
- Datasheet:
-
AT25XV041B-UUVHR-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,795
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Product details
Overview
AT25XV041B-UUVHR-T from Renesas Electronics is a 4-Mbit serial SPI Flash memory IC supporting Dual-I/O operation, 1.65 V–4.4 V single-supply operation, and 85 MHz max clock frequency. It delivers 7.5 ns clock-to-output timing, 256-byte page erase, and hardware write protection via WP pin for embedded code shadowing and OTA firmware updates in battery-powered IoT nodes.
For engineers reviewing the AT25XV041B-UUVHR-T datasheet, AT25XV041B-UUVHR-T pinout, AT25XV041B-UUVHR-T application, or AT25XV041B-UUVHR-T equivalent, key selection criteria include ultra-deep power-down current (200 nA), OTP security register (128 bytes), flexible erase granularity (4/32/64 kB blocks + 256-byte pages), and JEDEC-standard ID read capability.
Technical Context
The AT25XV041B-UUVHR-T implements a SPI-compatible interface with support for Modes 0 and 3, enabling interoperability with standard microcontroller SPI peripherals. Its Dual-I/O Read mode doubles data throughput by outputting two bits per SCK falling edge using SI (I/O0) and SO (I/O1) pins simultaneously.
Internally, the device features a segmented memory architecture with uniform 4-kB, 32-kB, and 64-kB erase blocks plus 256-byte pages-optimized for mixed code+data storage. Protection is enforced via both software commands and hardware WP pin assertion, while status reporting includes active interrupt signaling for host sleep/wake coordination during program/erase cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KB) organized as 64 × 64-kB sectors; enables compact firmware storage without external memory expansion. |
| Supply Voltage Range | 1.65 V to 4.4 V; supports direct interfacing with Li-ion, Li-poly, and coin-cell batteries without level-shifting. |
| Max Clock Frequency | 85 MHz; enables high-speed read access (e.g., 170 MB/s in Dual-I/O mode) for real-time code execution. |
| Page Program Time | 1.85 ms typical (256 bytes); reduces firmware update latency in field-deployed devices. |
| Erase Granularity | 256-byte page, 4/32/64-kB uniform blocks, full chip; allows precise over-the-air patching without erasing entire application image. |
| Ultra Deep Power-Down | 200 nA typical current; extends multi-year battery life in always-on sensor nodes and wearables. |
| OTP Security Register | 128 bytes (64 factory-unique + 64 user-programmable); provides tamper-resistant device serialization and key binding. |
Pinout & Package
AT25XV041B-UUVHR-T is packaged in an 8-pad Ultra Thin DFN (2 × 3 × 0.6 mm) with wettable flank leads for automated optical inspection (AOI) and reliable reflow soldering in space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must transition low-to-high to complete commands and enter standby; remains active during internal self-timed operations. |
| SCK | Serial Clock | Master-generated clock; rising edge latches input (SI), falling edge clocks out output (SO/I/O1); defines all timing windows. |
| SI (I/O0) | Serial Input / Dual-I/O Data 0 | Input for commands/addresses/data in standard SPI; becomes bidirectional I/O0 during Dual-I/O Read for parallel bit streaming. |
| SO (I/O1) | Serial Output / Dual-I/O Data 1 | Output for read data in standard SPI; remains output I/O1 during Dual-I/O Read to deliver second bit per SCK cycle. |
| WP | Write Protect | Hardware lock control; low state enables sector-level protection independent of software commands; internally pulled high. |
| HOLD | Communication Pause | Active-low suspend signal; halts SCK/SI activity without deselecting CS; preserves internal state during host interrupts or low-power transitions. |
| VCC | Power Supply | Single 1.65–4.4 V supply; powers core logic, memory array, and I/O buffers; no auxiliary voltage required for programming. |
| GND | Ground Reference | Common return path for VCC and all I/O signals; requires low-impedance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Delivers 2× read bandwidth vs. standard SPI by clocking two bits per SCK falling edge on SI and SO pins. |
| Flexible Erase Architecture | Supports 256-byte page, 4/32/64-kB block, and full-chip erase-enabling granular firmware updates and efficient data logging. |
| Hardware + Software Protection | WP pin enables immediate sector locking; software commands allow dynamic reconfiguration of protected regions without hardware changes. |
| Active Status Interrupt | Asserts interrupt signal upon completion of program/erase operations, allowing host MCU to remain in deep sleep until notified. |
| OTP Security Register | 128-byte one-time programmable area with factory-assigned unique ID and user-writable fields for secure boot key binding. |
Applications
| Wireless Sensor Node Firmware Storage | Smart Meter Code Shadowing |
|---|---|
Use Scenario: Battery-powered environmental sensor node performing periodic measurements and transmitting data via BLE or LoRaWAN. IC Role / Device Role / Timing Role: Stores boot loader, application firmware, and calibration tables; executes code-in-place (XIP) or shadows into RAM for execution. Use Value: 200 nA ultra-deep power-down current extends 10+ year battery life; 256-byte page erase enables incremental OTA patches without full image reload. | Use Scenario: Utility smart meter requiring secure, long-term firmware storage and field-upgradable billing algorithms. IC Role / Device Role / Timing Role: Non-volatile storage for certified firmware images, cryptographic keys, and usage history logs; accessed via SPI from metering SoC. Use Value: Hardware WP pin prevents accidental overwrite during power glitches; 128-byte OTP register stores device-specific ESN and root-of-trust keys. |
| Wearable Health Monitor OTA Updates | Industrial PLC Configuration Storage |
Use Scenario: FDA-cleared wearable ECG monitor receiving regulatory-compliant firmware updates over Bluetooth. IC Role / Device Role / Timing Role: Holds signed firmware images and rollback partitions; verifies signatures before execution using keys stored in OTP register. Use Value: 85 MHz Dual-I/O Read accelerates signature verification; 4-kB block erase isolates update partitions to prevent corruption during partial writes. | Use Scenario: Programmable logic controller storing ladder logic programs, I/O mapping tables, and calibration coefficients across multiple field deployments. IC Role / Device Role / Timing Role: Persistent configuration memory accessible by ARM Cortex-M7 host; retains data for 20 years at industrial temperature range (−40°C to +85°C). Use Value: 32-kB and 64-kB uniform block erase simplifies backup/restore of large configuration sets; JEDEC ID read enables automated BOM validation during manufacturing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W25Q40EW | 4 Mbit density, 1.7–2.0 V supply only; no ultra-deep power-down (1 µA typical); lacks OTP register. | Targeted at cost-sensitive consumer electronics where wide voltage range and security are not required. | Select when operating exclusively from 1.8 V rails and security features are unnecessary. |
| Micron MT25QL04A | 4 Mbit density, 2.7–3.6 V supply; supports Quad-I/O (QPI) but not Dual-I/O; 2.5 µA deep power-down (vs. 200 nA). | Optimized for automotive infotainment systems requiring QPI bus efficiency and AEC-Q100 qualification. | Choose for QPI-capable hosts and AEC-Q100 compliance needs; avoid if ultra-low power or 1.65 V operation is mandatory. |
Compared with W25Q40EW and MT25QL04A, the AT25XV041B-UUVHR-T uniquely combines 1.65 V minimum operation, 200 nA ultra-deep power-down, and factory-programmed OTP for secure serialization-making it optimal for battery-powered, security-aware edge devices where voltage headroom and longevity are critical.
Availability
AT25XV041B-UUVHR-T is available at Aetrix Electronics and suitable for wireless sensor nodes, smart meters, wearable health monitors, and industrial PLCs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT25XV041B-UUVHR-T 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
Renesas Electronics is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets with focus on reliability, energy efficiency, and functional safety.
The AT25XV041B-UUVHR-T belongs to Renesas' serial Flash memory product line, engineered specifically for ultra-low-power, secure, and voltage-flexible code+data storage in battery-operated connected devices.
FAQ
What is the minimum operating voltage for the AT25XV041B-UUVHR-T?
The AT25XV041B-UUVHR-T operates down to 1.65 V, enabling direct compatibility with partially discharged lithium-based batteries and eliminating the need for voltage regulators in space- and power-constrained designs. This specification is validated across the full industrial temperature range (−40°C to +85°C) and applies to all functions including read, program, and erase operations. The AT25XV041B-UUVHR-T maintains full timing compliance and data retention integrity at this minimum voltage.
Does the AT25XV041B-UUVHR-T support Quad-I/O (QPI) mode?
No, the AT25XV041B-UUVHR-T does not support Quad-I/O mode. It supports standard SPI (Modes 0 and 3) and Dual-I/O Read, where SI (I/O0) and SO (I/O1) jointly deliver two bits per SCK falling edge. QPI functionality is absent from the command set, pin definitions, and electrical specifications in the official Renesas datasheet DS-AT25XV041B-091. The AT25XV041B-UUVHR-T achieves its 85 MHz performance target exclusively through Dual-I/O optimization.
How is hardware write protection implemented on the AT25XV041B-UUVHR-T?
Hardware write protection on the AT25XV041B-UUVHR-T is controlled by the WP (Write Protect) pin, which must be driven low to enable sector locking. When asserted, WP overrides software-based protection commands and prevents modification of designated memory regions-even during power cycling. The pin is internally pulled high, so floating WP defaults to unprotected operation. For robust security, Renesas recommends externally tying WP to VCC unless hardware locking is actively used. This behavior is fully documented in Section 9.7 of the AT25XV041B-UUVHR-T datasheet.
What is the purpose of the HOLD pin on the AT25XV041B-UUVHR-T?
The HOLD pin on the AT25XV041B-UUVHR-T provides a hardware mechanism to pause ongoing SPI communication without deselecting the device or resetting internal state. When asserted low, it freezes SCK and SI activity while placing SO in high-impedance-allowing the host MCU to service higher-priority interrupts or enter low-power states mid-transaction. HOLD has no effect on in-progress program or erase cycles, which continue autonomously. This feature is essential for deterministic timing in real-time systems and is defined in Section 2 and Figure 35 of the AT25XV041B-UUVHR-T datasheet.
Can the AT25XV041B-UUVHR-T's OTP security register be reprogrammed after initial programming?
No, the 128-byte OTP (One-Time Programmable) security register in the AT25XV041B-UUVHR-T cannot be erased or rewritten once programmed. The first 64 bytes are factory-programmed with a unique identifier and are permanently locked; the remaining 64 bytes are user-programmable in a single write operation. Subsequent attempts to program already-set bits will fail, and no command exists to clear or reset the register. This irreversible behavior ensures cryptographic key binding and device serialization integrity, as specified in Section 10 of the AT25XV041B-UUVHR-T datasheet.
AT25XV041B-UUVHR-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 2.75ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 4.4V
- Operating Temperature:
- -40°C ~ 125°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WLCSP (1.63x1.58)
AT25XV041B-UUVHR-T FAQ
1.How can I place an order for AT25XV041B-UUVHR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XV041B-UUVHR-T 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 AT25XV041B-UUVHR-T reliable?
The price and inventory of AT25XV041B-UUVHR-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25XV041B-UUVHR-T is usually 5 days.
3.What payment methods are accepted for AT25XV041B-UUVHR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XV041B-UUVHR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XV041B-UUVHR-T?
AT25XV041B-UUVHR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XV041B-UUVHR-T 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 AT25XV041B-UUVHR-T?
For technical support, including AT25XV041B-UUVHR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XV041B-UUVHR-T requirements.
6.How does Aetrix verify that AT25XV041B-UUVHR-T is sourced from the original manufacturer or authorized distributors?
All AT25XV041B-UUVHR-T 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 AT25XV041B-UUVHR-T meets industry standards.
7.What is the process for return or replacement of AT25XV041B-UUVHR-T?
All AT25XV041B-UUVHR-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25XV041B-UUVHR-T, 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 AT25XV041B-UUVHR-T part is unused and in its original packaging.
Return procedure for AT25XV041B-UUVHR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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