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Renesas AT25XV041B-SSHV-B
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- Part No.:
- AT25XV041B-SSHV-B
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25XV041B-SSHV-B.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,037
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Product details
Overview
AT25XV041B from Renesas Electronics is a 4-Mbit serial SPI Flash memory IC supporting 1.65 V–4.4 V single-supply operation, Dual-I/O read mode at up to 85 MHz, and 7.5 ns clock-to-output timing. It delivers flexible erase granularity (256-byte page, 4/32/64-kByte blocks, full chip), hardware write protection via WP pin, and 128-byte OTP security register with factory-unique 64-byte ID for secure boot and device authentication in embedded IoT nodes.
For engineers reviewing the AT25XV041B datasheet, AT25XV041B pinout, AT25XV041B application, or AT25XV041B equivalent, this page provides verified pin functions, real-world use cases in firmware update and data logging, confirmed low-power modes (200 nA ultra-deep power-down), endurance (100,000 cycles), and direct alternatives with documented erase/program compatibility.
Technical Context
The AT25XV041B implements a dual-I/O SPI interface compliant with Modes 0 and 3, enabling two-bit-per-clock data transfer during Dual-Output Read commands. Its memory architecture supports simultaneous code shadowing and local data storage via independent 4-kByte block erase zones and 256-byte page erase for fine-grained updates.
Internal control logic integrates active status interrupt signaling, automatic program/erase failure detection, and software-controlled reset-enabling host MCU sleep during self-timed operations. The OTP security register is physically isolated and one-time programmable, supporting ESN storage and locked key provisioning without external encryption co-processors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 kByte) organized as 64 kByte sectors for efficient code/data partitioning |
| Supply Voltage | 1.65 V–4.4 V single rail-compatible with Li-ion, coin-cell, and wide-input industrial supplies |
| Max Clock Frequency | 85 MHz in Dual-I/O mode-doubles effective throughput vs standard SPI read |
| Read Latency | 7.5 ns clock-to-output (tV)-enables deterministic timing-critical boot sequences |
| Erase Granularity | 256-byte page + 4/32/64-kByte uniform blocks-minimizes wasted space during OTA firmware patching |
| Endurance & Retention | 100,000 program/erase cycles and 20-year data retention-validated for 10+ year field deployments |
| Ultra-Deep Power-Down | 200 nA typical current-extends battery life in always-on sensor nodes between wake events |
Pinout & Package
AT25XV041B is available in five RoHS-compliant packages: 8-lead SOIC (150-mil), 8-pad UDFN (2×3×0.6 mm), 8-pad UDFN (5×6×0.6 mm), 8-lead TSSOP, and 8-ball WLCSP (3×2 array). All variants share identical 8-pin functional mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for command/address/data latching; deassertion places device in standby (not deep power-down) |
| SCK | Serial Clock | Master-generated clock; rising edge latches SI input, falling edge clocks SO output |
| SI (I/O0) | Serial Input / Dual-I/O Data Line 0 | Command/address/data input in standard mode; becomes I/O0 output during Dual-I/O reads |
| SO (I/O1) | Serial Output / Dual-I/O Data Line 1 | Data output in standard mode; remains I/O1 output during Dual-I/O reads for parallel bit streaming |
| WP | Write Protect | Hardware lock for sector protection registers; low-active, internally pulled high |
| HOLD | Communication Pause | Temporarily suspends SPI transfer without deselecting CS; requires CS asserted and SCK low to activate |
| VCC | Power Supply | Single 1.65–4.4 V rail powering all logic and memory arrays; no auxiliary voltage required |
| GND | Ground Reference | Common return path for VCC and all I/O signals; must connect to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Delivers 2× data rate over standard SPI by clocking two bits per SCK falling edge-reducing firmware load time by up to 50% |
| Flexible Erase Architecture | Supports 256-byte page erase for config updates and 64-kByte block erase for full firmware images-eliminating need for external wear-leveling logic |
| OTP Security Register | 128-byte one-time programmable area with 64-byte factory-unique ID-enables hardware-rooted device identity and secure key binding |
| Ultra-Low Power States | 200 nA ultra-deep power-down and 5 µA deep power-down-extends shelf life and operational runtime in energy-constrained edge devices |
| Status Interrupt | Active-low interrupt pin asserts when program/erase completes-allows host MCU to remain in low-power sleep until operation finishes |
Applications
| Firmware Over-the-Air (OTA) Updates | Secure Boot & Device Authentication |
|---|---|
Use Scenario: Wireless firmware patching in battery-powered smart meters with limited bandwidth and strict power budgets. IC Role / Device Role / Timing Role: Non-volatile storage for validated firmware images and delta patches; executes fast Dual-I/O reads during boot verification and page-erases during incremental updates. Use Value: 256-byte page erase minimizes flash wear during frequent small updates; 85 MHz Dual-I/O read accelerates signature verification latency by 40% vs standard SPI. | Use Scenario: Medical wearable requiring cryptographically signed firmware and unique device identity for HIPAA-compliant cloud registration. IC Role / Device Role / Timing Role: Stores immutable public keys, ESN, and boot certificate chain in OTP register; enables hardware-enforced root-of-trust during cold start. Use Value: Factory-programmed 64-byte unique ID eliminates software-based serialization risks; OTP write-once behavior prevents key tampering post-manufacture. |
| Industrial Sensor Data Logging | Code Shadowing in Resource-Constrained MCUs |
Use Scenario: Predictive maintenance node logging vibration and temperature samples every 5 seconds for 30 days on a single CR2032 cell. IC Role / Device Role / Timing Role: Local non-volatile buffer for timestamped sensor records; uses 4-kByte block erase to cycle through fixed-size log partitions. Use Value: 4-kByte uniform erase blocks align precisely with 30-day log segmentation; 25 µA standby current extends battery life beyond 18 months. | Use Scenario: Low-cost ARM Cortex-M0+ microcontroller with only 64 kB of internal SRAM executing application code from external memory. IC Role / Device Role / Timing Role: External code storage for shadow loading into RAM; leverages 7.5 ns tV and 85 MHz clock for sub-100 µs instruction fetch latency. Use Value: Clock-to-output timing ensures deterministic execution timing critical for real-time motor control loops; 1.65 V minimum supply enables operation down to near-dead battery voltage. |
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 W25Q40EWS | 4 Mbit density, 1.7–2.0 V supply range only; no Ultra-Deep Power-Down (2 µA deep power-down vs 200 nA) | Limited to narrow-voltage systems; unsuitable for coin-cell or wide-input industrial designs | Select when cost is primary and supply voltage is tightly regulated at 1.8 V |
| Micron MT25QL04A | 4 Mbit, supports Quad-I/O and XIP mode; higher 133 MHz max frequency but 3.5 µA deep power-down | Better throughput for XIP execution; less suitable for ultra-low-power intermittent logging | Select when application requires execute-in-place or >85 MHz read bandwidth |
Compared with W25Q40EWS and MT25QL04A, the AT25XV041B uniquely balances ultra-low power (200 nA), wide 1.65–4.4 V operation, and Dual-I/O speed-making it optimal for battery longevity and supply flexibility in connected edge devices where Quad-I/O complexity or narrow voltage rails are unnecessary.
Availability
AT25XV041B is available at Aetrix Electronics and suitable for firmware OTA updates, secure boot implementations, industrial sensor data logging, and code shadowing applications requiring stable component supply across automotive, medical, and industrial IoT product lifecycles.
Supply support for AT25XV041B 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 and long-term support.
The AT25XV041B belongs to Renesas' serial Flash memory product line, engineered specifically for ultra-low-power, wide-voltage, and secure connected-device applications-emphasizing energy efficiency, robustness in harsh environments, and integrated security primitives.
FAQ
What is the minimum operating voltage for the AT25XV041B?
The AT25XV041B operates down to 1.65 V, enabling reliable function with aging batteries or wide-input DC-DC converters. This specification is validated across the full industrial temperature range (−40°C to +85°C) and supports uninterrupted operation during brown-out conditions common in portable and remote sensor nodes. The AT25XV041B maintains full command functionality-including Dual-I/O read and OTP programming-at this minimum voltage.
Does the AT25XV041B support Quad-I/O or only Dual-I/O?
The AT25XV041B supports SPI Modes 0 and 3 with Dual-I/O operation (using SI and SO as I/O0/I/O1) but does not implement Quad-I/O. Its Dual-I/O mode achieves up to 85 MHz clock rates and 7.5 ns tV, providing sufficient bandwidth for most firmware and data logging use cases without the layout complexity of four I/O lines. The AT25XV041B datasheet explicitly defines only Dual-Output Read and Dual-Input Program commands-not Quad variants.
How is the 128-byte OTP security register structured in the AT25XV041B?
The AT25XV041B's 128-byte OTP security register consists of 64 bytes factory-programmed with a unique device identifier and 64 bytes user-programmable for keys or ESN. Once written, OTP locations cannot be erased or rewritten-ensuring cryptographic binding. Programming requires the Program OTP Security Register command (3Ah) and is verified via Read OTP Security Register (3Bh). The AT25XV041B enforces hardware write-protection after initial programming.
What erase times can be expected for different block sizes in the AT25XV041B?
AT25XV041B specifies 45 ms typical for 4-kByte block erase, 360 ms for 32-kByte block erase, and 720 ms for 64-kByte block erase. Page erase (256 bytes) takes 1.85 ms typical. All values are measured at VCC = 3.0 V and TA = 25°C, with maximum times published in the datasheet for design margining. These timings are internally self-timed and reported via status register polling or active interrupt-no external timing circuitry required for the AT25XV041B.
Can the AT25XV041B be used in place of standard SPI Flash in existing designs without layout changes?
Yes-the AT25XV041B shares identical pinout, voltage levels, and command set with industry-standard SPI Flash devices (e.g., JEDEC JESD216 compliant). Its 8-lead SOIC, TSSOP, and UDFN packages match footprint and solder-reflow profiles of legacy parts. However, enabling Dual-I/O mode requires host firmware updates to issue 3Bh/BBh opcodes and manage dual-data-line timing; the AT25XV041B remains fully backward-compatible in standard single-I/O mode.
AT25XV041B-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:
- 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 ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25XV041B-SSHV-B FAQ
1.How can I place an order for AT25XV041B-SSHV-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XV041B-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 AT25XV041B-SSHV-B reliable?
The price and inventory of AT25XV041B-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 AT25XV041B-SSHV-B is usually 5 days.
3.What payment methods are accepted for AT25XV041B-SSHV-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XV041B-SSHV-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XV041B-SSHV-B?
AT25XV041B-SSHV-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XV041B-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 AT25XV041B-SSHV-B?
For technical support, including AT25XV041B-SSHV-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XV041B-SSHV-B requirements.
6.How does Aetrix verify that AT25XV041B-SSHV-B is sourced from the original manufacturer or authorized distributors?
All AT25XV041B-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 AT25XV041B-SSHV-B meets industry standards.
7.What is the process for return or replacement of AT25XV041B-SSHV-B?
All AT25XV041B-SSHV-B units undergo pre-shipment inspection (PSI). If there is an issue with AT25XV041B-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 AT25XV041B-SSHV-B part is unused and in its original packaging.
Return procedure for AT25XV041B-SSHV-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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