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Renesas AT25XV021A-UUV-T
- Part No.:
- AT25XV021A-UUV-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UFBGA, WLCSP
- Datasheet:
-
AT25XV021A-UUV-T.pdf
- Description:
- IC FLASH 2MBIT SPI/DUAL 8WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,555
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Product details
Overview
AT25XV021A-UUV-T from Renesas Electronics is a 2-Mbit serial SPI Flash memory IC designed for code shadowing, OTA firmware updates, and local data logging in battery-powered embedded systems. It operates across 1.65 V–4.4 V, supports Dual-I/O read at up to 70 MHz, delivers 6 ns clock-to-output timing, and features 256-byte page erase and uniform 4/32/64-kByte block erase.
For engineers reviewing the AT25XV021A-UUV-T datasheet, AT25XV021A-UUV-T pinout, AT25XV021A-UUV-T application, or AT25XV021A-UUV-T equivalent, key selection considerations include ultra-low power modes (200 nA ultra-deep power-down), OTP security register (128 bytes with factory-unique ID), hardware write protection via WP pin, and JEDEC-standard manufacturer/device ID support.
Technical Context
The AT25XV021A-UUV-T implements a SPI-compatible interface supporting Modes 0 and 3, with dual-input programming and dual-output read capability enabling 2-bit-per-clock data transfer. Its memory architecture includes hierarchical erase granularity-256-byte pages, 4-kByte blocks, 32-kByte blocks, 64-kByte blocks, and full-chip erase-optimized for mixed code/data storage.
Internal control logic integrates active status interrupt signaling, software/hardware sector protection, and deep power-down entry/exit sequences synchronized to chip select toggling. The device uses on-chip charge pumps for erase/program operations without external high-voltage supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 bytes) organized as 32 kBytes × 8; sufficient for boot code + configuration + telemetry logs in compact IoT nodes. |
| Supply Voltage Range | 1.65 V to 4.4 V; enables direct operation from single Li-ion, Li-polymer, or 3×AA alkaline cells without LDO regulation. |
| Max Clock Frequency | 70 MHz; supports high-throughput firmware reads during MCU boot or OTA patch application. |
| Read Latency | 6 ns clock-to-output (tV); reduces wait states and improves effective instruction fetch bandwidth in code-shadowing systems. |
| Erase Granularity | 256-byte page, 4/32/64-kByte uniform blocks; allows fine-grained data updates without disturbing adjacent firmware sectors. |
| Power-Down Current | 200 nA typical ultra-deep power-down; extends battery life in always-on sensor nodes with infrequent wake-up intervals. |
| Endurance & Retention | 100,000 program/erase cycles and 20-year data retention; validated for field-deployed industrial controllers and medical consumables. |
Pinout & Package
AT25XV021A-UUV-T is packaged in an 8-pad Ultra Thin DFN (2 mm × 3 mm × 0.6 mm), RoHS-compliant and halide-free. Pin functions are electrically identical across all supported packages (SOIC, TSSOP, WLCSP, UDFN).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; rising edge terminates ongoing command, falling edge initiates new SPI transaction; must remain asserted during self-timed erase/program cycles. |
| SCK | Serial Clock | Master-generated clock; data latched on rising edge (SI), output shifted on falling edge (SO/I/O1); supports up to 70 MHz for Dual-I/O mode. |
| SI (I/O0) | Serial Input / Dual-I/O Data Line 0 | Command/address/data input in standard mode; becomes bidirectional I/O0 during Dual-I/O read/write, enabling 2-bit parallel output per SCK cycle. |
| SO (I/O1) | Serial Output / Dual-I/O Data Line 1 | Data output in standard mode; remains I/O1 during Dual-I/O operations, paired with SI/I/O0 to deliver two bits per clock edge. |
| WP | Write Protect | Hardware lock control; low-active signal that freezes sector protection registers and prevents accidental writes/erases when asserted. |
| HOLD | Communication Hold | Pauses SPI transfer without deselecting device or resetting internal state; requires CS low and SCK low to activate; preserves command context during MCU interrupts. |
| VCC | Power Supply | Single 1.65–4.4 V supply; powers internal charge pump for erase/program; no auxiliary voltage required. |
| GND | Ground Reference | Common return path for VCC and all I/O signals; must be low-impedance connection to avoid timing skew or noise-induced errors. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Delivers 2-bit data per SCK falling edge, doubling effective read throughput vs. standard SPI-critical for fast boot loading. |
| OTP Security Register | 128-byte one-time programmable area: 64 bytes factory-programmed unique ID + 64 bytes user-writable for ESN or cryptographic keys. |
| Flexible Erase Architecture | Four distinct erase granularities (256B/4k/32k/64k) allow independent update of firmware partitions, calibration tables, and event logs without cross-contamination. |
| Ultra-Deep Power-Down | 200 nA typical current draw with instant wake-up via CS toggle; enables multi-year battery life in wireless sensor endpoints. |
| Hardware + Software Protection | WP pin enables physical lock; status register bits (SRWD, BPL) provide software-controlled sector locking-dual-layer security against corruption. |
Applications
| Firmware Storage in Wearables | Secure OTA Updates for Smart Meters |
|---|---|
Use Scenario: Storing bootloader, application firmware, and calibration data in compact wearable health monitors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Non-volatile code storage with fast Dual-I/O read for rapid boot; ultra-deep power-down minimizes quiescent drain between sensor sampling intervals. Use Value: Enables 3+ year battery life while supporting field-upgradable firmware and persistent health metric logging without external EEPROM. |
Use Scenario: Hosting encrypted firmware images and secure key storage in ANSI C12.22-compliant smart electricity meters deployed in utility grids. IC Role / Device Role / Timing Role: Trusted code repository with OTP-based device identity and hardware write protection to prevent tampering during remote firmware delivery. Use Value: Meets NIST IR 7924 security requirements via factory-unique ID and immutable sector locking-reducing certification overhead for Class 0 metering. |
| Industrial Edge Controller Logging | Disposable Medical Consumables |
Use Scenario: Capturing process alarms, timestamped diagnostics, and maintenance history in DIN-rail-mounted PLCs operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Local non-volatile data logger with 4-kByte block erase for cyclic buffer management; industrial temp rating ensures reliability in uncontrolled cabinets. Use Value: Eliminates need for external FRAM or backup capacitors-reducing BOM count while guaranteeing 20-year retention of critical audit trails. |
Use Scenario: Embedding single-use authorization tokens and usage counters in sterilized diagnostic cartridges for point-of-care analyzers. IC Role / Device Role / Timing Role: One-time programmable credential store; OTP register permanently records manufacturing lot, expiration, and first-use flag. Use Value: Supports FDA 21 CFR Part 11 compliance via irreversible write-once semantics-preventing reuse of expired or compromised consumables. |
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 W25Q20EW | 2-Mbit SPI flash with Quad-I/O support (not Dual-I/O); 104 MHz max clock; 1.7–2.0 V supply only; no OTP register. | Better raw bandwidth for high-speed boot, but lacks ultra-low-voltage operation and hardware-secured serialization. | Select W25Q20EW only if system uses 1.8 V rails and requires Quad-I/O performance; not suitable for sub-1.7 V or security-critical use cases. |
| Micron MT25QL02GA | 2-Mbit SPI flash with Quad/Dual-I/O; 133 MHz max clock; 1.7–2.0 V supply; includes 64-byte OTP but no factory-unique ID. | Higher speed and density scalability, but narrower voltage range and weaker device identity assurance than AT25XV021A-UUV-T. | Choose MT25QL02GA for designs targeting future migration to 4/8-Mbit variants; verify OTP content provisioning workflow compatibility. |
Compared with W25Q20EW and MT25QL02GA, the AT25XV021A-UUV-T uniquely combines 1.65 V minimum operation, factory-programmed unique ID, and 200 nA ultra-deep power-down-making it optimal for energy-constrained, security-aware, and wide-input-voltage applications where long-term data integrity is mandatory.
Availability
AT25XV021A-UUV-T is available at Aetrix Electronics and suitable for firmware storage in wearables, secure OTA updates for smart meters, and industrial edge controller logging requiring stable component supply across extended temperature and voltage ranges.
Supply support for AT25XV021A-UUV-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 microcontrollers, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT markets.
The AT25XV021A-UUV-T belongs to Renesas' serial Flash memory product line, engineered specifically for ultra-low-power, secure, and voltage-flexible embedded storage in battery-operated and safety-critical systems.
FAQ
What is the operating voltage range of the AT25XV021A-UUV-T?
The AT25XV021A-UUV-T operates from 1.65 V to 4.4 V, enabling direct integration with single-cell lithium batteries, 3×AA alkaline packs, or regulated 3.3 V/2.5 V rails. This wide range eliminates the need for intermediate LDOs in portable designs and maintains reliable operation across battery discharge curves.
Does the AT25XV021A-UUV-T support Dual-I/O read mode?
Yes, the AT25XV021A-UUV-T supports Dual-I/O read using the 0Bh opcode, where both SI (I/O0) and SO (I/O1) pins output data simultaneously on each SCK falling edge. This doubles read throughput versus standard SPI, reducing boot time and improving firmware update efficiency in resource-constrained hosts.
How does the OTP security register function in the AT25XV021A-UUV-T?
The AT25XV021A-UUV-T includes a 128-byte OTP security register: 64 bytes factory-programmed with a unique device identifier and 64 bytes user-programmable for ESN, keys, or usage flags. Once programmed, OTP contents cannot be altered-enabling secure device authentication and disposable consumable tracking in the AT25XV021A-UUV-T.
What erase block sizes does the AT25XV021A-UUV-T support?
The AT25XV021A-UUV-T supports four erase granularities: 256-byte pages, 4-kByte blocks, 32-kByte blocks, and 64-kByte blocks, plus full-chip erase. This hierarchy allows precise management of firmware partitions, configuration data, and event logs-minimizing wear and maximizing usable lifetime in the AT25XV021A-UUV-T.
What is the ultra-deep power-down current specification for the AT25XV021A-UUV-T?
The AT25XV021A-UUV-T draws just 200 nA typical current in ultra-deep power-down mode, activated via the 7Ch command. Exit is triggered by a CS toggle, restoring full functionality within microseconds. This ultra-low quiescent draw extends battery life in always-on sensor nodes and intermittent-usage medical devices using the AT25XV021A-UUV-T.
AT25XV021A-UUV-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR (SLC)
- Memory Size:
- 2Mbit
- Memory Organization:
- 256K x 8
- Memory Interface:
- SPI - Dual I/O
- Clock Frequency:
- 70 MHz
- Write Cycle Time - Word, Page:
- 8µs, 2.5ms
- Access Time:
- 6 ns
- Voltage - Supply:
- 1.65V ~ 4.4V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WLCSP (2.28x1.55)
AT25XV021A-UUV-T FAQ
1.How can I place an order for AT25XV021A-UUV-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XV021A-UUV-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 AT25XV021A-UUV-T reliable?
The price and inventory of AT25XV021A-UUV-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25XV021A-UUV-T is usually 5 days.
3.What payment methods are accepted for AT25XV021A-UUV-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XV021A-UUV-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XV021A-UUV-T?
AT25XV021A-UUV-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XV021A-UUV-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 AT25XV021A-UUV-T?
For technical support, including AT25XV021A-UUV-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XV021A-UUV-T requirements.
6.How does Aetrix verify that AT25XV021A-UUV-T is sourced from the original manufacturer or authorized distributors?
All AT25XV021A-UUV-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 AT25XV021A-UUV-T meets industry standards.
7.What is the process for return or replacement of AT25XV021A-UUV-T?
All AT25XV021A-UUV-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25XV021A-UUV-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 AT25XV021A-UUV-T part is unused and in its original packaging.
Return procedure for AT25XV021A-UUV-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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