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Renesas AT25XV021A-SSHV-B
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- Part No.:
- AT25XV021A-SSHV-B
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25XV021A-SSHV-B.pdf
- Description:
- IC FLASH 2MBIT SPI 70MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,347
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Product details
Overview
AT25XV021A-SSHV-B from Renesas Electronics is a 2-Mbit serial SPI Flash memory IC supporting dual-I/O operation, 1.65 V–4.4 V single-supply operation, and 70 MHz max clock frequency. It delivers 6 ns clock-to-output timing, 256-byte page erase, and hardware write protection via WP pin. Used in code shadowing, OTA firmware updates, and secure local data storage for battery-powered IoT edge nodes.
For engineers reviewing the AT25XV021A-SSHV-B datasheet, AT25XV021A-SSHV-B pinout, AT25XV021A-SSHV-B application, or AT25XV021A-SSHV-B equivalent, key selection criteria include ultra-deep power-down current (200 nA), OTP security register (128 bytes), JEDEC-compliant ID read, flexible erase granularity (4/32/64-kB blocks), and industrial temperature support (–40°C to +85°C).
Technical Context
The AT25XV021A-SSHV-B implements a SPI-compatible interface with full 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.
Internally, it features a segmented flash array with dedicated SRAM data buffer, Y/X decoders, and control logic supporting concurrent status polling and active interrupt signaling. Erase and program operations are fully self-timed with automatic failure detection and reporting via status register flags.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 bytes) - sufficient for compact firmware images and configuration data in space-constrained embedded systems. |
| Supply Voltage Range | 1.65 V to 4.4 V - enables direct interfacing with Li-ion, Li-poly, and coin-cell batteries without voltage regulation. |
| Max Clock Frequency | 70 MHz - supports high-speed read access for real-time code execution and fast OTA update verification. |
| Page Program Time | 2 ms typical (256 bytes) - reduces firmware update latency and improves system responsiveness during field upgrades. |
| Erase Granularity | 256-byte page / 4-kB / 32-kB / 64-kB uniform blocks - allows precise partitioning of code vs. data sectors to minimize wear and optimize endurance. |
| Ultra-Deep Power-Down Current | 200 nA typical - extends battery life in always-on sensor nodes and maintenance-free edge devices. |
| OTP Security Register | 128 bytes (64 factory UID + 64 user-programmable) - enables device serialization, ESN binding, and cryptographic key anchoring. |
Pinout & Package
AT25XV021A-SSHV-B is packaged in an 8-lead SOIC (150-mil) with industry-standard pinout and RoHS-compliant green finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; initiates all commands and places device in standby when deasserted. |
| SCK | Serial Clock | Master-generated clock controlling data latching (rising edge on SI) and output timing (falling edge on SO). |
| SI (I/O0) | Serial Input / Dual-I/O Data Line 0 | Primary command/address/data input; becomes I/O0 during dual-output reads for parallel bit streaming. |
| SO (I/O1) | Serial Output / Dual-I/O Data Line 1 | Data output during standard reads; becomes I/O1 during dual-output reads to deliver second bit per clock cycle. |
| WP | Write Protect | Hardware lock for sector protection; low-active signal enabling robust, glitch-immune write inhibition. |
| HOLD | Hold Control | Pauses ongoing SPI transfers without deselecting device or resetting internal state-critical for multi-master arbitration. |
| VCC | Power Supply | Single 1.65–4.4 V supply powering core logic, flash array, and I/O buffers-no auxiliary voltage required. |
| GND | Ground Reference | Common return path for VCC and all signal I/Os; must be low-impedance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Delivers 140 MB/s effective throughput at 70 MHz, halving read time for firmware boot sequences and OTA packet validation. |
| Flexible Erase Architecture | Enables independent management of code (64-kB blocks) and configuration data (256-byte pages), reducing unnecessary block erases and extending flash lifetime. |
| Active Status Interrupt | Allows host MCU to enter deep sleep during long program/erase cycles and wake only upon completion-reducing average system power by >90%. |
| Hardware + Software Sector Protection | Combines WP pin locking with software-configurable protection registers to prevent accidental or malicious firmware corruption in field-deployed devices. |
| Ultra-Deep Power-Down Mode | Reduces quiescent current to 200 nA while retaining full memory content-ideal for energy-harvesting and battery-only edge sensors. |
Applications
| Firmware Boot Storage | OTA Firmware Update Storage |
|---|---|
Use Scenario: Stores compressed bootloader and application image for microcontrollers lacking internal flash or requiring external code execution. IC Role / Device Role / Timing Role: Non-volatile code storage with fast random-access read and deterministic 6 ns tV for zero-latency instruction fetch. Use Value: Enables XIP (execute-in-place) from flash with minimal latency penalty, eliminating RAM copy overhead and reducing BOM cost. |
Use Scenario: Holds validated firmware patches prior to atomic swap during over-the-air updates in wireless sensor networks. IC Role / Device Role / Timing Role: Secure, wear-leveled storage for encrypted firmware binaries with hardware write protection during download phase. Use Value: Prevents partial writes and corruption during power loss; 256-byte page erase allows patch metadata and signature storage without disturbing main image. |
| Secure Device Identity Storage | Industrial Sensor Configuration Storage |
Use Scenario: Stores factory-programmed unique identifier and user-programmable cryptographic keys for TLS mutual authentication in IIoT gateways. IC Role / Device Role / Timing Role: Tamper-resistant OTP register providing immutable identity anchor for secure boot chain and key derivation. Use Value: Eliminates need for external secure element; 64-byte factory UID ensures globally unique device binding across production batches. |
Use Scenario: Retains calibrated sensor offsets, compensation coefficients, and network credentials in smart pressure transmitters operating in harsh environments. IC Role / Device Role / Timing Role: Industrial-grade non-volatile storage with 20-year data retention and –40°C to +85°C operation. Use Value: Maintains calibration integrity across thermal cycling and power interruptions; 4-kB block erase isolates config updates from firmware partitions. |
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 density, 1.7–2.0 V supply range only; no ultra-deep power-down (2 µA typ); lacks OTP security register. | Targeted at cost-sensitive consumer electronics where extended battery life and device identity are not required. | Select when lowest unit cost is critical and system operates exclusively within narrow 1.7–2.0 V range. |
| Macronix MX25L2033F | 2 Mbit density, 2.3–3.6 V supply; supports DTR mode but no dual-I/O; 1 µA deep power-down (vs. 200 nA); no OTP register. | Designed for legacy industrial controllers with fixed 3.3 V rails and moderate power budgets. | Choose if existing PCB layout uses 3.3 V and design does not require sub-µA sleep modes or hardware-based device serialization. |
Compared with W25Q20EW and MX25L2033F, the AT25XV021A-SSHV-B uniquely combines ultra-wide 1.65–4.4 V operation, 200 nA ultra-deep power-down, and factory-programmed UID-making it the only option for long-life, battery-powered, identity-critical edge nodes.
Availability
AT25XV021A-SSHV-B is available at Aetrix Electronics and suitable for firmware boot storage, OTA firmware update storage, secure device identity storage, and industrial sensor configuration storage requiring stable component supply across automotive, medical, and industrial OEM programs.
Supply support for AT25XV021A-SSHV-B 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 applications with emphasis on reliability, security, and energy efficiency.
The AT25XV021A product line targets ultra-low-power, secure, and wide-voltage serial flash requirements for next-generation battery-operated edge devices-designed specifically for code shadowing, OTA updates, and tamper-resistant identity storage.
FAQ
What is the operating voltage range supported by the AT25XV021A-SSHV-B?
The AT25XV021A-SSHV-B supports a single-supply operating voltage range of 1.65 V to 4.4 V. This wide range enables direct integration with modern lithium-based batteries-including Li-ion, Li-poly, and coin cells-without requiring external voltage regulation. The AT25XV021A-SSHV-B maintains full functionality, including program, erase, and read operations, across this entire range, making it ideal for portable and energy-constrained applications.
Does the AT25XV021A-SSHV-B support dual-I/O read mode, and what benefit does it provide?
Yes, the AT25XV021A-SSHV-B supports dual-I/O read mode using SI (I/O0) and SO (I/O1) pins to output two bits per SCK falling edge. At its maximum 70 MHz clock frequency, this achieves an effective data rate of 140 MB/s-double that of standard single-I/O SPI. This significantly accelerates firmware boot loading and OTA update verification, reducing system startup time and improving responsiveness in time-critical edge applications.
How does the AT25XV021A-SSHV-B handle power-down states, and what is its lowest quiescent current?
The AT25XV021A-SSHV-B offers two ultra-low-power states: Deep Power-Down (5 µA typical) and Ultra-Deep Power-Down (200 nA typical). The latter retains full memory contents while drawing less than 0.2 µA, enabling multi-year battery life in always-on sensor nodes. Entry and exit are controlled via dedicated SPI commands, and the AT25XV021A-SSHV-B resumes operation within microseconds after wake-up-ensuring rapid system responsiveness.
What security features are integrated into the AT25XV021A-SSHV-B?
The AT25XV021A-SSHV-B includes a 128-byte one-time programmable (OTP) security register: 64 bytes factory-programmed with a unique device identifier and 64 bytes user-programmable for keys or certificates. It also supports hardware write protection via the WP pin and software-controlled sector locking. These features enable secure device onboarding, TLS certificate anchoring, and anti-counterfeiting-making the AT25XV021A-SSHV-B suitable for applications requiring cryptographic root-of-trust.
What erase block sizes does the AT25XV021A-SSHV-B support, and why does this matter for firmware storage?
The AT25XV021A-SSHV-B supports four erase granularities: 256-byte pages, 4-kB blocks, 32-kB blocks, and 64-kB blocks-plus full-chip erase. This flexibility allows firmware images to be stored in large 64-kB blocks (minimizing erase cycles), while configuration data resides in smaller 256-byte pages (enabling frequent updates without disturbing code). As a result, the AT25XV021A-SSHV-B extends flash endurance and optimizes memory utilization far beyond fixed-block alternatives.
AT25XV021A-SSHV-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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-B FAQ
1.How can I place an order for AT25XV021A-SSHV-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XV021A-SSHV-B 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-B reliable?
The price and inventory of AT25XV021A-SSHV-B 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-B is usually 5 days.
3.What payment methods are accepted for AT25XV021A-SSHV-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XV021A-SSHV-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XV021A-SSHV-B?
AT25XV021A-SSHV-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XV021A-SSHV-B 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-B?
For technical support, including AT25XV021A-SSHV-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XV021A-SSHV-B requirements.
6.How does Aetrix verify that AT25XV021A-SSHV-B is sourced from the original manufacturer or authorized distributors?
All AT25XV021A-SSHV-B 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-B meets industry standards.
7.What is the process for return or replacement of AT25XV021A-SSHV-B?
All AT25XV021A-SSHV-B units undergo pre-shipment inspection (PSI). If there is an issue with AT25XV021A-SSHV-B, 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-B part is unused and in its original packaging.
Return procedure for AT25XV021A-SSHV-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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