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Renesas AT25SL641-SHE-T
- Part No.:
- AT25SL641-SHE-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT25SL641-SHE-T.pdf
- Description:
- IC FLASH 64MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,968
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Product details
Overview
AT25SL641-SHE-T from Renesas Electronics is a 64-Mbit serial NOR Flash memory IC designed for code storage and data logging in embedded systems. It operates from a single 1.7 V–2.0 V supply, supports SPI/QPI interfaces up to 133 MHz, delivers 6 ns clock-to-output timing, and features 4-kB/32-kB/64-kB block erase with 100,000 program/erase cycles - deployed in industrial IoT gateways for firmware update storage.
For engineers reviewing the AT25SL641-SHE-T datasheet, AT25SL641-SHE-T pinout, AT25SL641-SHE-T application, or AT25SL641-SHE-T equivalent, key selection criteria include low-voltage operation (1.7–2.0 V), quad I/O read bandwidth (up to 66 MB/s), secured OTP register, SFDP compliance, and industrial temperature range (−40 °C to +85 °C).
Technical Context
The AT25SL641-SHE-T implements a flexible erase architecture with four block sizes (4-kB, 32-kB, 64-kB, full chip), enabling efficient code partitioning and data logging without over-erasure. Its dual/quad I/O and QPI modes support burst reads with wrap and fast program operations using 256-byte pages.
It integrates hardware write protection via WP pin, status register locking (SRP0/SRP1), and a 4-kbit secured one-time programmable register accessible only after entering secured OTP mode. The device complies with JEDEC JESD216B SFDP v1.6 for automatic configuration discovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (8 MB) organized as 32,768 × 256-byte pages |
| Supply Voltage | 1.7 V to 2.0 V - enables direct interfacing with 1.8 V logic domains without level shifters |
| Max Clock Frequency | 133 MHz SPI/QPI - supports 532 MHz effective quad-I/O throughput for high-speed boot loading |
| Read Latency | 6 ns tV1 - ensures minimal wait states during XiP (execute-in-place) execution |
| Erase Endurance | 100,000 cycles per 4-kB/32-kB/64-kB block - validated for firmware update partitions in field-deployed devices |
| Data Retention | 20 years at +85 °C - meets long-life requirements for industrial control firmware storage |
| Deep Power-Down Current | 2 µA typical - enables ultra-low-power sleep modes in battery-backed edge nodes |
Pinout & Package
AT25SL641-SHE-T is supplied in an 8-pad DFN package (6 mm × 5 mm × 0.6 mm, RoHS-compliant). This compact, thermally enhanced leadless package supports reflow soldering and suits space-constrained PCB layouts in portable and industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS# | Chip Select Input | Active-low enable for SPI/QPI command decoding; must be stable before SCLK edge |
| DO (IO1) | Serial Data Output / I/O | Outputs data in standard/fast read modes; bidirectional in dual/quad I/O and QPI |
| WP# | Write Protect Input | Hardware lock for status registers when driven low; overrides software write-enable state |
| GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance PCB plane |
| VCC | Power Supply | 1.7–2.0 V core and I/O supply; decoupling capacitor (≥1 µF) required near pin |
| HOLD# | Pause Input | Suspends ongoing read/program/erase without terminating command sequence |
| DI (IO0) | Serial Data Input / I/O | Accepts commands, addresses, and program data; bidirectional in dual/quad I/O and QPI |
| SCLK | Serial Clock Input | Drives all synchronous operations; supports modes 0 and 3 (CPOL=0/1, CPHA=0) |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) | Enables single-cycle address/command transmission and continuous quad-I/O data streaming - reduces instruction overhead vs. standard SPI |
| Erase/Program Suspend & Resume | Allows background read access during long erase/program operations - critical for real-time systems requiring deterministic latency |
| Serial Flash Discoverable Parameters (SFDP) | JESD216B-compliant register provides standardized, host-agnostic configuration of read/write/erase timings and capabilities |
| Secured One-Time Programmable Register | 4-kbit OTP area locked behind dedicated enter/exit commands - used for secure keys, calibration data, or device-specific identifiers |
| Flexible Block Erase Architecture | Independent 4-kB, 32-kB, and 64-kB erase blocks minimize wasted space when updating partial firmware images or logging datasets |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers with field-upgrade capability. IC Role / Device Role / Timing Role: Nonvolatile code storage with execute-in-place (XiP) support and fast random read access for runtime instruction fetch. Use Value: 6 ns tV1 latency and 133 MHz QPI interface reduce boot time by >35% versus legacy 40 MHz SPI Flash in same footprint. | Use Scenario: Holding certified boot loader and safety-critical application code in Class II medical imaging equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant firmware repository with hardware write protection and OTP-locked signature storage. Use Value: WP# pin and SRP0/SRP1 bits prevent accidental overwrite during power transients; 4-kbit secured OTP stores cryptographic keys offline. |
| Automotive ADAS Sensor Hub | Smart Energy Meter Data Logging |
Use Scenario: Storing sensor fusion algorithms and calibration tables in radar/Ethernet gateway modules operating across −40 °C to +85 °C. IC Role / Device Role / Timing Role: High-reliability code and parameter storage with guaranteed 20-year data retention at elevated temperature. Use Value: 100,000 erase cycles and industrial temp rating ensure 15+ year service life in under-hood deployments without refresh. | Use Scenario: Recording hourly consumption metrics and tariff schedules in utility-grade smart meters with 10-year battery life. IC Role / Device Role / Timing Role: Low-power data logger with deep power-down (2 µA) between writes and fast wake-up for timestamped writes. Use Value: 2 µA deep power-down current extends primary battery life beyond 10 years while supporting 100,000+ write cycles to rotating log sectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR Flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W25Q64JW-EIQ | Same density (64 Mbit), 1.7–2.0 V supply, but uses octal DTR interface; no QPI mode; 8-pin SOIC only | Lacks QPI and SFDP v1.6; supports higher clock rates (166 MHz) in octal mode only | Select if system uses octal interface and requires marginally faster sequential reads; not drop-in for QPI-dependent firmware |
| Macronix MX25L6433F-ZNI | 64 Mbit, 2.3–3.6 V supply; supports standard SPI/QPI but no secured OTP; 100,000 cycles, 20-year retention | Requires external voltage translation for 1.8 V hosts; lacks hardware-secured OTP register | Choose when 1.8 V compatibility is not required and security keys are managed externally |
Compared with W25Q64JW-EIQ and MX25L6433F-ZNI, the AT25SL641-SHE-T uniquely combines 1.7–2.0 V operation, QPI + SFDP v1.6, and 4-kbit secured OTP - making it optimal for resource-constrained, security-aware industrial designs where voltage headroom and on-chip key storage are critical.
Availability
AT25SL641-SHE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code, and automotive ADAS sensor hub applications requiring stable component supply and long-term lifecycle assurance.
Supply support for AT25SL641-SHE-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 enterprise markets.
The AT25SL641-SHE-T belongs to Renesas' serial NOR Flash product line, engineered specifically for low-voltage, high-reliability embedded code and data storage in harsh environments.
FAQ
What is the operating voltage range of the AT25SL641-SHE-T?
The AT25SL641-SHE-T operates from a single supply of 1.7 V to 2.0 V. This narrow low-voltage window enables direct integration with 1.8 V FPGA, MCU, and SoC I/O domains without level-shifting circuitry, reducing BOM cost and board space. Operation outside this range may cause undefined behavior or data corruption.
Does the AT25SL641-SHE-T support execute-in-place (XiP) functionality?
Yes, the AT25SL641-SHE-T supports XiP through its 6 ns clock-to-output (tV1) timing and 133 MHz QPI interface, enabling zero-wait-state instruction fetch directly from Flash. Its fast read latency and burst-with-wrap capability make it suitable for real-time embedded applications where RAM shadowing is impractical.
How is write protection implemented on the AT25SL641-SHE-T?
The AT25SL641-SHE-T implements dual-layer write protection: hardware-based via the WP# pin (which locks status registers when asserted), and software-configurable via status register bits BP2–BP0, TB, SEC, and SRP0/SRP1. This allows granular, persistent protection of boot sectors and OTP regions against accidental or malicious overwrite.
What is the purpose of the 4-kbit Secured OTP register in the AT25SL641-SHE-T?
The 4-kbit Secured OTP register in the AT25SL641-SHE-T provides tamper-resistant, one-time programmable storage for cryptographic keys, calibration data, or device-unique identifiers. Access requires explicit entry into secured OTP mode (command 0xB1), preventing runtime modification and ensuring integrity of sensitive parameters stored in the AT25SL641-SHE-T.
Is the AT25SL641-SHE-T compatible with JEDEC-standard Serial Flash Discovery Parameters (SFDP)?
Yes, the AT25SL641-SHE-T fully complies with JEDEC JESD216B SFDP v1.6. Its SFDP register (address 0x000000, accessed via command 0x5A) provides standardized, host-readable tables describing supported read/write/erase commands, timing parameters, and feature flags - enabling automatic, vendor-agnostic Flash initialization in modern bootloaders.
AT25SL641-SHE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR (SLC)
- Memory Size:
- 64Mbit
- Memory Organization:
- 8M x 8
- Memory Interface:
- SPI - Quad I/O, QPI
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 150µs, 5ms
- Access Time:
- 6 ns
- Voltage - Supply:
- 1.7V ~ 2V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25SL641-SHE-T FAQ
1.How can I place an order for AT25SL641-SHE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25SL641-SHE-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 AT25SL641-SHE-T reliable?
The price and inventory of AT25SL641-SHE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25SL641-SHE-T is usually 5 days.
3.What payment methods are accepted for AT25SL641-SHE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25SL641-SHE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25SL641-SHE-T?
AT25SL641-SHE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25SL641-SHE-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 AT25SL641-SHE-T?
For technical support, including AT25SL641-SHE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25SL641-SHE-T requirements.
6.How does Aetrix verify that AT25SL641-SHE-T is sourced from the original manufacturer or authorized distributors?
All AT25SL641-SHE-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 AT25SL641-SHE-T meets industry standards.
7.What is the process for return or replacement of AT25SL641-SHE-T?
All AT25SL641-SHE-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25SL641-SHE-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 AT25SL641-SHE-T part is unused and in its original packaging.
Return procedure for AT25SL641-SHE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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