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Renesas AT25XV021A-SSHV-T
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- Part No.:
- AT25XV021A-SSHV-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25XV021A-SSHV-T.pdf
- Description:
- IC FLASH 2MBIT SPI 70MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,729
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Product details
Overview
AT25XV021A-SSHV-T from Renesas Electronics is a 2-Mbit serial SPI Flash memory IC optimized for low-voltage, low-power 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 integrates hardware write protection via WP pin and 128-byte OTP security register for device serialization.
For engineers reviewing the AT25XV021A-SSHV-T datasheet, AT25XV021A-SSHV-T pinout, AT25XV021A-SSHV-T application, or AT25XV021A-SSHV-T equivalent, this page provides verified package mapping (8-lead SOIC), confirmed SPI Mode 0/3 compatibility, validated erase granularity (256-Byte page / 4/32/64-kByte blocks), and real-world design implications for OTA firmware updates and secure boot storage.
Technical Context
The AT25XV021A-SSHV-T implements a dual-I/O SPI interface with dedicated I/O0 (SI) and I/O1 (SO) pins enabling two-bit-per-clock read transfers, reducing instruction latency versus standard single-I/O SPI. Its memory architecture partitions the 2-Mbit array into uniform 4-kByte blocks and 256-Byte pages, supporting independent erasure for code and data segments without cross-contamination.
Internal control logic enforces hardware-based sector locking via the active-low WP pin and supports software-controlled protection commands. The device includes status register polling and active interrupt capability to signal completion of self-timed program/erase operations, enabling host MCU sleep during background flash operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256 KByte) - sufficient for compact firmware images or configuration data in space-constrained IoT nodes. |
| Supply Voltage Range | 1.65 V to 4.4 V - enables direct interfacing with Li-ion, Li-poly, or multi-rail industrial supplies without level-shifting. |
| Max Clock Frequency | 70 MHz - supports high-throughput read access for code shadowing into RAM with minimal latency penalty. |
| Read Latency (tV) | 6 ns - ensures deterministic timing for time-critical boot sequences and real-time firmware execution. |
| Erase Granularity | 256-Byte page / 4-kByte block / 32-kByte block / 64-kByte block - allows precise over-the-air (OTA) patching without full chip erase. |
| Ultra-Deep Power-Down | 200 nA typical - extends battery life in always-on sensor nodes by >10× versus standard standby modes. |
| Endurance & Retention | 100,000 program/erase cycles / 20-year data retention - meets long-life requirements for industrial and medical devices. |
Pinout & Package
AT25XV021A-SSHV-T is supplied in an industry-standard 8-lead SOIC (150-mil) package, pin-compatible with legacy SPI flash devices and suitable for reflow assembly in high-volume production.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; initiates command sequence on high-to-low transition and terminates on low-to-high transition. |
| SCK | Serial Clock | Master-generated clock; latches SI input on rising edge, clocks SO output 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 parallel bit streaming. |
| 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 deliver second bit per SCK cycle. |
| WP | Write Protect | Hardware lock control; low state prevents status register modification and sector protection changes. |
| HOLD | Communication Pause | Active-low suspend; halts 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 erase. |
| GND | Ground Reference | Common return path for all digital and analog circuitry; must be low-impedance connection. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Interface | Delivers 2× data throughput vs. standard SPI at same clock rate-reduces firmware load time by up to 50% in boot scenarios. |
| Flexible Erase Architecture | Independent 256-Byte page and 4/32/64-kByte block erase enables selective OTA updates without disrupting adjacent code or config data. |
| OTP Security Register | 128-byte field with 64-byte factory-unique ID + 64-byte user-programmable space-supports secure device identity and key binding. |
| Ultra-Low Power Modes | 200 nA ultra-deep power-down current enables multi-year battery operation in maintenance-free edge sensors. |
| Hardware Write Protection | WP pin locks protected sectors at power-on-prevents accidental firmware corruption during field upgrades or brown-out events. |
Applications
| Firmware Storage for Wearables | Secure Boot in Medical Devices |
|---|---|
Use Scenario: Storing compressed firmware images and calibration tables in compact wearable health monitors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Non-volatile code storage with fast read access for cold-boot execution and low-latency OTA patching. Use Value: 200 nA ultra-deep power-down extends battery life beyond 3 years; 256-Byte page erase minimizes update window and preserves data integrity. |
Use Scenario: Holding signed bootloader and cryptographic keys in FDA-cleared patient monitoring equipment requiring tamper-resistant storage. IC Role / Device Role / Timing Role: Secure, immutable storage for root-of-trust assets with hardware-enforced write protection and unique device serialization. Use Value: Factory-programmed 64-byte UID enables device-level traceability; OTP register prevents runtime key exposure or overwrite. |
| Industrial Sensor Node Logging | Smart Home Hub Configuration |
Use Scenario: Local logging of temperature, humidity, and motion events in battery-powered IIoT gateways deployed in remote facilities. IC Role / Device Role / Timing Role: Persistent data buffer with wear-leveling support via fine-grained 4-kByte block erase and 100K-cycle endurance. Use Value: Uniform 4-kByte erase blocks align with typical sensor data packet sizes-reducing garbage collection overhead and extending flash lifetime. |
Use Scenario: Storing Wi-Fi credentials, user preferences, and firmware version metadata in voice-controlled smart home hubs. IC Role / Device Role / Timing Role: Reliable configuration storage with fast random read access and hardware lock against unauthorized reset or credential wipe. Use Value: WP pin hardens against malicious or accidental reconfiguration; 70 MHz Dual-I/O read accelerates hub boot and network reconnection. |
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 | Same 2-Mbit density, 1.7–2.0 V min supply, no OTP register, 100 µA deep power-down (vs. 5 µA). | Lacks hardware-locked OTP for secure serialization; higher active current limits battery life in ultra-low-power nodes. | Choose when cost sensitivity outweighs security and ultra-low-power requirements. |
| Macronix MX25U2033F | 2-Mbit, 1.65–3.6 V, supports Quad-I/O (not Dual-I/O only), 25 µA deep power-down, no factory UID. | Higher bandwidth via Quad-I/O but requires additional PCB routing; missing factory-unique ID complicates device provisioning. | Prefer for bandwidth-constrained designs where quad interface is already implemented and UID is managed externally. |
Compared with W25Q20EW and MX25U2033F, the AT25XV021A-SSHV-T uniquely combines ultra-low 200 nA power-down, integrated factory UID, and hardware WP lock-making it optimal for secure, battery-critical embedded applications where firmware integrity and longevity are non-negotiable.
Availability
AT25XV021A-SSHV-T is available at Aetrix Electronics and suitable for firmware storage in wearables, secure boot in medical devices, and data logging in industrial sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for AT25XV021A-SSHV-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, and IoT markets.
The AT25XV021A belongs to Renesas' low-voltage serial Flash memory product line, engineered specifically for energy-constrained, secure, and long-lifecycle embedded systems requiring robust OTA update capability.
FAQ
What is the operating voltage range of the AT25XV021A-SSHV-T?
The AT25XV021A-SSHV-T operates across a wide 1.65 V to 4.4 V supply range, enabling direct compatibility with lithium-based batteries and multi-rail industrial power systems. This eliminates the need for external voltage regulation in many portable and battery-powered designs, and the AT25XV021A-SSHV-T maintains full functionality-including Dual-I/O read and program/erase operations-across the entire range.
Does the AT25XV021A-SSHV-T support Quad-SPI interface?
No, the AT25XV021A-SSHV-T supports only standard SPI and Dual-I/O (2-line) read modes-not Quad-I/O. It uses SI (I/O0) and SO (I/O1) pins for simultaneous 2-bit data transfer during Dual-Output Read commands. Quad-I/O capability is not implemented in the AT25XV021A-SSHV-T silicon or command set, as confirmed by the official Renesas datasheet Rev. F.
How does the hardware write protection (WP) pin function on the AT25XV021A-SSHV-T?
The WP pin on the AT25XV021A-SSHV-T is an active-low input that enables hardware locking of protected memory sectors. When asserted (low), it prevents modification of the status register and blocks software-based sector protect/unprotect commands-even if the internal write enable latch is set. The AT25XV021A-SSHV-T datasheet specifies that WP overrides software protection, providing fail-safe firmware integrity during brown-out or system fault conditions.
What erase block sizes does the AT25XV021A-SSHV-T support?
The AT25XV021A-SSHV-T supports four distinct erase granularities: 256-Byte page erase, 4-kByte block erase, 32-kByte block erase, and 64-kByte block erase-plus full chip erase. This hierarchy allows precise targeting of firmware patches or configuration updates without disturbing unrelated memory regions, and the AT25XV021A-SSHV-T executes each type with guaranteed timing (e.g., 45 ms typical for 4-kByte erase).
Is the OTP security register on the AT25XV021A-SSHV-T factory-programmed?
Yes, the 128-byte OTP security register on the AT25XV021A-SSHV-T contains 64 bytes pre-programmed with a unique device identifier at manufacture, and 64 bytes left user-programmable. Once written, OTP bits cannot be altered-ensuring permanent device serialization and secure key storage. This feature is explicitly documented in the AT25XV021A-SSHV-T datasheet Section 10 and Table 8.
AT25XV021A-SSHV-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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-SOIC
AT25XV021A-SSHV-T FAQ
1.How can I place an order for AT25XV021A-SSHV-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XV021A-SSHV-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-SSHV-T reliable?
The price and inventory of AT25XV021A-SSHV-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-SSHV-T is usually 5 days.
3.What payment methods are accepted for AT25XV021A-SSHV-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XV021A-SSHV-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XV021A-SSHV-T?
AT25XV021A-SSHV-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XV021A-SSHV-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-SSHV-T?
For technical support, including AT25XV021A-SSHV-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XV021A-SSHV-T requirements.
6.How does Aetrix verify that AT25XV021A-SSHV-T is sourced from the original manufacturer or authorized distributors?
All AT25XV021A-SSHV-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-SSHV-T meets industry standards.
7.What is the process for return or replacement of AT25XV021A-SSHV-T?
All AT25XV021A-SSHV-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25XV021A-SSHV-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-SSHV-T part is unused and in its original packaging.
Return procedure for AT25XV021A-SSHV-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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