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Renesas AT25XV021A-MHV-T
- Part No.:
- AT25XV021A-MHV-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT25XV021A-MHV-T.pdf
- Description:
- IC FLASH 2MBIT SPI 70MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,797
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Product details
Overview
AT25XV021A-MHV-T from Renesas Electronics is a 2-Mbit serial SPI Flash memory IC operating from 1.65 V to 4.4 V, supporting Dual-I/O read at up to 70 MHz with 6 ns clock-to-output delay. It features 256-byte page erase, uniform 4/32/64-kByte block erase, hardware write protection via WP pin, and a 128-byte OTP security register. It is used for code shadowing, OTA firmware updates, and secure local data storage in battery-powered IoT edge nodes.
For engineers reviewing the AT25XV021A-MHV-T datasheet, AT25XV021A-MHV-T pinout, AT25XV021A-MHV-T application, or AT25XV021A-MHV-T equivalent, key selection criteria include its ultra-low 200 nA deep power-down current, flexible erase granularity for mixed code/data storage, SPI Mode 0/3 compatibility, and OTP-based device serialization capability.
Technical Context
The AT25XV021A-MHV-T implements a standard SPI interface with dedicated SI (I/O0), SO (I/O1), CS, SCK, WP, and HOLD pins, enabling both single- and dual-output read operations. Its memory architecture supports byte/page program (1–256 bytes), sequential programming mode, and four distinct erase granularities - page (256 B), 4-kB, 32-kB, and 64-kB blocks - plus full chip erase.
It integrates hardware-controlled sector locking via the WP pin and software-controlled protection commands, alongside an active status interrupt for host sleep/wake coordination during long program/erase cycles. The 128-byte OTP register contains 64 bytes factory-programmed with a unique identifier and 64 bytes user-programmable for ESN or cryptographic keys.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256 kByte) serial Flash array optimized for code shadowing and small-data logging. |
| Supply Voltage | 1.65 V – 4.4 V - enables direct interfacing with Li-ion, Li-poly, and coin-cell batteries without regulation. |
| Max Clock Frequency | 70 MHz - delivers high-speed read throughput in Dual-I/O mode for responsive firmware execution. |
| Read Latency | 6 ns tV (clock-to-output) - minimizes wait states during instruction fetch from external Flash. |
| Erase Granularity | 256-Byte page + 4/32/64-kByte uniform blocks - allows efficient over-the-air update partitioning without erasing entire application image. |
| Power-Down Current | 200 nA typical ultra-deep power-down - extends battery life in always-on sensor nodes and wearables. |
| Endurance & Retention | 100,000 program/erase cycles / 20-year data retention - suitable for field-upgradable embedded systems with multi-year service life. |
Pinout & Package
AT25XV021A-MHV-T is packaged in an 8-lead SOIC (150-mil) with standard JEDEC footprint. Pin functions are fully compatible with industry-standard SPI Flash devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; initiates command sequence on high-to-low transition and terminates on low-to-high. |
| SCK | Serial Clock | Master-generated clock controlling data latching (SI on rising edge) and output timing (SO on falling edge). |
| SI (I/O0) | Serial Input / Dual-I/O Data Line 0 | Command/address/data input in standard mode; becomes bidirectional I/O0 in Dual-I/O read for 2-bit-per-cycle output. |
| SO (I/O1) | Serial Output / Dual-I/O Data Line 1 | Data output in standard mode; remains I/O1 in Dual-I/O read to support concurrent 2-bit data streaming. |
| WP | Write Protect | Hardware lock control: low assertion disables write/erase commands to protected sectors, independent of software state. |
| HOLD | Communication Pause | Active-low signal suspends ongoing SPI transfer without deselecting device or resetting internal state. |
| VCC | Power Supply | Single supply rail (1.65–4.4 V); no auxiliary voltage required for programming or erasing. |
| GND | Ground Reference | Common return path for all digital and analog circuitry; must be low-impedance connection to system ground. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Support | Enables 2-bit-per-clock read transfers, doubling effective throughput versus standard SPI without increasing clock frequency. |
| Flexible Erase Architecture | Four erase granularities (256 B, 4/32/64 kB) allow precise allocation of code vs. configuration vs. log data regions with minimal wasted space. |
| OTP Security Register | 128-byte one-time programmable area with 64-byte factory-unique ID and 64-byte user field - supports secure boot key binding and device identity provisioning. |
| Ultra-Low Power Modes | 200 nA ultra-deep power-down and 5 µA deep power-down enable multi-year operation on primary batteries in maintenance-free deployments. |
| Status Interrupt | Active-low interrupt pin signals completion of program/erase operations, allowing host MCU to enter low-power sleep during long latency operations. |
Applications
| Code Shadowing in Resource-Constrained MCUs | Firmware Updates Over-the-Air (OTA) |
|---|---|
Use Scenario: Microcontroller with limited on-chip Flash executes application code by copying from external AT25XV021A-MHV-T into RAM at boot. IC Role / Device Role / Timing Role: Non-volatile code storage with fast random-access read and low-latency instruction fetch via Dual-I/O mode. Use Value: Enables use of low-cost MCUs with minimal embedded Flash while maintaining performance via 70 MHz Dual-I/O reads and 6 ns tV. | Use Scenario: Wireless sensor node receives encrypted firmware patches via BLE or LoRaWAN and writes them to AT25XV021A-MHV-T before rebooting. IC Role / Device Role / Timing Role: Secure, field-upgradable storage with atomic 4-kB block erase and OTP-protected signature verification keys. Use Value: Prevents partial update corruption using uniform 4-kB erase blocks aligned to firmware segment boundaries and hardware write protection during validation. |
| Secure Local Configuration Storage | Battery-Powered Edge Node Data Logging |
Use Scenario: Smart meter stores calibration coefficients, tariff tables, and regulatory compliance settings in AT25XV021A-MHV-T with permanent write-locking after commissioning. IC Role / Device Role / Timing Role: Tamper-resistant configuration repository using hardware WP pin lock and OTP-stored cryptographic keys. Use Value: Ensures configuration integrity across 20-year product lifetime with 100K endurance cycles and hardware-enforced immutability post-deployment. | Use Scenario: Environmental monitor logs temperature/humidity samples every 5 minutes into AT25XV021A-MHV-T using circular buffer in 256-byte pages. IC Role / Device Role / Timing Role: Low-energy persistent data logger leveraging 256-byte page erase and 200 nA ultra-deep power-down between writes. Use Value: Achieves >5-year operation on CR2032 coin cell by minimizing active current (3.5 mA read) and eliminating leakage during 99.9% of runtime. |
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, 1.7–2.0 V supply only; no Ultra-Deep Power-Down mode (lowest standby 1 µA); lacks OTP register. | Not suitable for sub-1.7 V battery operation or secure device serialization; requires external key management. | Select AT25XV021A-MHV-T when wide voltage range (1.65–4.4 V), ultra-low power, or built-in OTP security are required. |
| Micron MT25QL02G | 2 Gbit density (1000× larger); 1.7–2.0 V supply; supports Quad-I/O but no Dual-I/O-only mode; 2.5 µA deep power-down. | Over-specified for simple code storage; incompatible voltage range for direct coin-cell use; higher cost and PCB footprint. | Choose AT25XV021A-MHV-T for compact, low-voltage, low-power 2-Mbit applications where density and quad speed are unnecessary. |
Compared with W25Q20EW and MT25QL02G, the AT25XV021A-MHV-T uniquely combines ultra-wide 1.65–4.4 V operation, 200 nA power-down, and factory-programmed OTP identity - making it optimal for disposable or energy-harvested edge sensors requiring secure, long-life, single-supply Flash.
Availability
AT25XV021A-MHV-T is available at Aetrix Electronics and suitable for code shadowing, OTA firmware updates, and secure configuration storage requiring stable component supply across industrial, medical, and consumer IoT programs.
Supply support for AT25XV021A-MHV-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 memory solutions for automotive, industrial, infrastructure, and IoT markets.
The AT25XV021A-MHV-T belongs to Renesas' low-voltage serial Flash product line, designed specifically for battery-powered and energy-constrained connected devices requiring secure, reliable, and ultra-low-power non-volatile storage.
FAQ
What is the operating voltage range of the AT25XV021A-MHV-T?
The AT25XV021A-MHV-T operates from 1.65 V to 4.4 V, enabling direct interface with lithium-based batteries (including partially discharged cells) and eliminating the need for voltage regulation in portable designs. This wide range supports both coin-cell and rechargeable Li-ion applications without external level-shifting circuitry.
Does the AT25XV021A-MHV-T support Dual-I/O read mode?
Yes, the AT25XV021A-MHV-T supports Dual-I/O read using the SI (I/O0) and SO (I/O1) pins to output two bits per clock cycle, achieving up to 70 MHz effective throughput. This mode reduces instruction fetch latency compared to standard SPI and is enabled via specific opcodes (e.g., 3Bh) defined in the AT25XV021A-MHV-T datasheet.
How does the hardware write protection work on the AT25XV021A-MHV-T?
The AT25XV021A-MHV-T uses the WP pin to enable hardware-controlled sector locking: when WP is driven low, write and erase commands to protected sectors are blocked regardless of software status register settings. The WP pin is internally pulled high, and Renesas recommends connecting it to VCC if unused to prevent spurious protection activation.
What is the purpose of the OTP security register in the AT25XV021A-MHV-T?
The AT25XV021A-MHV-T includes a 128-byte OTP security register with 64 bytes factory-programmed with a unique device identifier and 64 bytes user-programmable. It supports secure boot key binding, electronic serial number (ESN) storage, and locked cryptographic key provisioning - critical for anti-counterfeiting and secure firmware authentication workflows.
What erase block sizes does the AT25XV021A-MHV-T support?
The AT25XV021A-MHV-T supports four erase granularities: 256-byte pages, and uniform 4-kByte, 32-kByte, and 64-kByte blocks. This flexibility allows optimized partitioning - for example, using 4-kB blocks for firmware segments and 256-byte pages for configuration parameters - maximizing memory utilization efficiency in mixed-code-and-data applications.
AT25XV021A-MHV-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 2Mbit
- Memory Organization:
- 256K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 70 MHz
- Write Cycle Time - Word, Page:
- 8µs, 2.5ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 4.4V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (5x6)
AT25XV021A-MHV-T FAQ
1.How can I place an order for AT25XV021A-MHV-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XV021A-MHV-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-MHV-T reliable?
The price and inventory of AT25XV021A-MHV-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-MHV-T is usually 5 days.
3.What payment methods are accepted for AT25XV021A-MHV-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XV021A-MHV-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XV021A-MHV-T?
AT25XV021A-MHV-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XV021A-MHV-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-MHV-T?
For technical support, including AT25XV021A-MHV-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XV021A-MHV-T requirements.
6.How does Aetrix verify that AT25XV021A-MHV-T is sourced from the original manufacturer or authorized distributors?
All AT25XV021A-MHV-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-MHV-T meets industry standards.
7.What is the process for return or replacement of AT25XV021A-MHV-T?
All AT25XV021A-MHV-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25XV021A-MHV-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-MHV-T part is unused and in its original packaging.
Return procedure for AT25XV021A-MHV-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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