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Renesas AT25QL128A-UIUE-T
- Part No.:
- AT25QL128A-UIUE-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 21-XFBGA, WLCSP
- Datasheet:
-
AT25QL128A-UIUE-T.pdf
- Description:
- IC FLASH 128MBIT SPI 21WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,053
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Product details
Overview
AT25QL128A-UIUE-T from Renesas Electronics is a 128-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/Dual/Quad I/O interfaces, delivers up to 65 Mbytes/s continuous read throughput, and features factory-default Quad Enable for high-speed access in space-constrained industrial controllers and IoT edge nodes.
For engineers reviewing the AT25QL128A-UIUE-T datasheet, AT25QL128A-UIUE-T pinout, AT25QL128A-UIUE-T application, or AT25QL128A-UIUE-T equivalent, key selection criteria include its 133 MHz QPI clock support, 6 ns clock-to-output timing, 2 µA deep power-down current, quad-enabled default configuration, and 21-ball WLCSP (UI) package compatibility with high-density PCB layouts.
Technical Context
The AT25QL128A-UIUE-T implements a flexible erase architecture with three block sizes (4 kB, 32 kB, 64 kB), enabling efficient partitioning of code and data segments without memory waste. Its command set includes full SPI Mode 0/3, Dual/Quad I/O Read/Program, and QPI operation-enabling seamless mode switching via dedicated enable/disable commands (38h/FFh).
Hardware write protection is enforced through dedicated WP pin control and status register locking (SRP0/SRP1), while the 4-kbit secured OTP register provides immutable device identity and secure boot key storage. Erase/program suspend/resume functionality allows real-time background operations without interrupting host CPU execution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 128 Mbit (16 MB) organized as 65,536 × 256-byte pages - enables full firmware image storage with page-level granularity for over-the-air updates. |
| Interface Support | SPI (Modes 0/3), Dual I/O, Quad I/O, and QPI - allows software-selectable bandwidth scaling from 133 MHz single-line to 532 MHz effective Quad I/O throughput. |
| Max Clock Frequency | 133 MHz in QPI mode - achieves 65 Mbytes/s sustained read rate critical for boot-from-Flash latency reduction. |
| Timing Performance | Clock-to-output (tV1) = 6 ns - ensures minimal read latency for time-critical instruction fetch cycles. |
| Power Consumption | 2 µA deep power-down current (typical) - extends battery life in always-on sensor nodes and low-power IoT endpoints. |
| Erase Endurance | 100,000 program/erase cycles per block - supports frequent field firmware updates in industrial gateways and telemetry devices. |
| Data Retention | 20 years at +85 °C - guarantees long-term reliability in automotive infotainment and medical data loggers. |
Pinout & Package
AT25QL128A-UIUE-T uses a 21-ball ultra-thin wafer-level chip-scale package (WLCSP) with 0.4 mm pitch, optimized for compact PCB footprints and thermal performance in fanless edge computing modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power Supply | 1.7–2.0 V core supply; must be stable within ±2% during active read/program/erase to prevent corruption. |
| GND | Ground Reference | Common return path for all I/O and internal logic; requires low-impedance connection to minimize noise coupling. |
| SI / IO0 | Serial Input / Quad I/O 0 | Input for SPI/QPI commands and address/data; bidirectional in Quad I/O mode for full-duplex transfers. |
| SO / IO1 | Serial Output / Quad I/O 1 | Output for read data; bidirectional in Quad I/O mode; supports dual/quad output reads with fast timing. |
| WP / IO2 | Write Protect / Quad I/O 2 | Active-low hardware lock for status registers; also functions as IO2 in Quad I/O mode when QE bit is set. |
| HOLD / IO3 | Hold Input / Quad I/O 3 | Pauses ongoing serial transfer without resetting internal state; serves as IO3 in Quad I/O mode. |
| SCK | Serial Clock | Master-generated clock driving all SPI/QPI transactions; max 133 MHz in QPI mode with tight setup/hold margins. |
| CS | Chip Select | Active-low enable signal; must remain asserted for entire command sequence including address and data phases. |
Key Features
| Feature | Design Value |
|---|---|
| Quad Enable (QE) default | Factory-configured QE bit enables immediate Quad I/O operation without initialization overhead - reduces boot time in resource-constrained microcontrollers. |
| Serial Flash Discoverable Parameters (SFDP) | Standardized JEDEC SFDP register (5Ah) provides runtime-accessible timing, density, and command-set metadata - eliminates hard-coded driver assumptions across Flash vendors. |
| Erase/Program Suspend & Resume | Allows host to pause background erase/program operations and service urgent interrupts - essential for real-time OS environments with strict latency budgets. |
| 4-kbit Secured OTP Register | Dedicated one-time programmable area stores cryptographic keys or device-specific identifiers - prevents cloning and enables secure boot chain validation. |
| Flexible Block Erase Architecture | Independent 4 kB / 32 kB / 64 kB erase blocks let firmware allocate code and data regions separately - avoids wasted space from oversized uniform-block Flash. |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
Use Scenario: Storing firmware images and configuration tables in programmable logic controllers operating continuously in harsh factory environments. IC Role / Device Role / Timing Role: Primary non-volatile code storage with fast random-access read capability and robust write endurance. Use Value: 100,000 erase cycles and 20-year data retention ensure multi-decade deployment without field replacement; 6 ns tV1 minimizes instruction fetch stalls. |
Use Scenario: Hosting boot code and safety-critical calibration data for radar and camera processing units in autonomous driving systems. IC Role / Device Role / Timing Role: Secure, high-reliability boot memory supporting ASIL-B functional safety requirements via OTP-protected keys. Use Value: 4-kbit secured OTP register enables cryptographic signature verification at boot; industrial temperature range (-40°C to +85°C) meets automotive qualification. |
| IoT Edge Node Data Logger | Medical Wearable Firmware Update Storage |
Use Scenario: Capturing sensor telemetry in battery-powered environmental monitors deployed remotely for months between charges. IC Role / Device Role / Timing Role: Low-power persistent storage for buffered sensor logs, supporting periodic background writes and deep-sleep wake-up reads. Use Value: 2 µA deep power-down current extends battery life; flexible 4 kB block erase enables efficient incremental log updates without full-chip erasure. |
Use Scenario: Storing updatable firmware and regulatory-compliant calibration profiles in FDA-cleared wearable ECG monitors. IC Role / Device Role / Timing Role: Certified, tamper-resistant firmware repository supporting encrypted OTA updates and audit-trail logging. Use Value: Hardware write protection (WP pin + SRP bits) prevents accidental or malicious overwrite; RoHS-compliant WLCSP package meets medical device material restrictions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W25Q128JVSIM | 1.8 V supply only; no QPI mode; 104 MHz max SPI clock; 8-lead SOIC or WSON packages only. | Lacks QPI and dual/quad I/O acceleration; limited to legacy SPI-only host interfaces. | Select when QPI support is unnecessary and SOIC/WSON footprint is preferred over WLCSP. |
| Micron MT25QL128ABA1EW9-0SIT | Identical 128-Mbit density, QPI/Dual/Quad I/O, and 133 MHz spec; same 21-ball WLCSP (UI) package; JEDEC-standard SFDP v1.6. | Direct functional and pin-compatible alternative with identical timing and command set compliance. | Choose for second-source assurance in high-volume production where cross-qualification is required. |
Compared with Winbond W25Q128JVSIM, AT25QL128A-UIUE-T delivers higher bandwidth via QPI and lower standby current; versus Micron MT25QL128ABA1EW9-0SIT, it offers identical performance but different OTP implementation and manufacturer-specific security register behavior.
Availability
AT25QL128A-UIUE-T is available at Aetrix Electronics and suitable for industrial automation, automotive telematics, and medical device manufacturing requiring stable component supply across multi-year product lifecycles.
Supply support for AT25QL128A-UIUE-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 AT25QL128A belongs to Renesas' high-performance serial NOR Flash product line, engineered for low-voltage, high-speed, and secure code/data storage in resource-constrained embedded systems.
FAQ
What is the default interface mode for AT25QL128A-UIUE-T at power-up?
The AT25QL128A-UIUE-T powers up in standard SPI mode, but the Quad Enable (QE) bit is factory-set to '1', allowing immediate transition to Quad I/O or QPI mode upon issuing the appropriate enable command (38h). This configuration eliminates startup delays in high-bandwidth applications requiring quad-speed access from first read.
Does AT25QL128A-UIUE-T support hardware write protection independent of software commands?
Yes, AT25QL128A-UIUE-T supports hardware write protection via the dedicated WP pin, which locks status registers when asserted low. This complements software-based protection (SRP0/SRP1 bits) and provides fail-safe prevention of unintended writes during voltage transients or firmware faults - critical for mission-critical AT25QL128A-UIUE-T deployments.
What package type does AT25QL128A-UIUE-T use, and how is it identified in the part number?
AT25QL128A-UIUE-T uses a 21-ball ultra-thin wafer-level chip-scale package (WLCSP) with 0.4 mm pitch. The 'UI' in the suffix explicitly denotes this UI (21-WLCSP) variant per Renesas' ordering nomenclature, distinguishing it from UDFN (U), SOIC (I), or other WLCSP variants like U (standard profile).
Can AT25QL128A-UIUE-T execute erase/program operations while servicing host interrupts?
Yes, AT25QL128A-UIUE-T supports Erase/Program Suspend (75h) and Resume (7Ah) commands. When suspended, the device halts the ongoing operation and responds to new commands - enabling host processors to handle time-sensitive tasks without waiting for lengthy erase cycles to complete, a key capability in real-time AT25QL128A-UIUE-T implementations.
How is the 4-kbit secured OTP register accessed on AT25QL128A-UIUE-T?
The 4-kbit secured OTP register in AT25QL128A-UIUE-T is accessed using dedicated commands: Enter Secured OTP (B1h), Exit Secured OTP (C1h), Read Security Register (2Bh), and Write Security Register (2Fh). Access requires prior write-enable and is protected by status register lock bits - ensuring that cryptographic keys or device IDs stored in AT25QL128A-UIUE-T OTP remain immutable after programming.
AT25QL128A-UIUE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 21-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 128Mbit
- Memory Organization:
- 16M 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:
- 21-WLCSP (3.02x3.29)
AT25QL128A-UIUE-T FAQ
1.How can I place an order for AT25QL128A-UIUE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25QL128A-UIUE-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 AT25QL128A-UIUE-T reliable?
The price and inventory of AT25QL128A-UIUE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25QL128A-UIUE-T is usually 5 days.
3.What payment methods are accepted for AT25QL128A-UIUE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25QL128A-UIUE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25QL128A-UIUE-T?
AT25QL128A-UIUE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25QL128A-UIUE-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 AT25QL128A-UIUE-T?
For technical support, including AT25QL128A-UIUE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25QL128A-UIUE-T requirements.
6.How does Aetrix verify that AT25QL128A-UIUE-T is sourced from the original manufacturer or authorized distributors?
All AT25QL128A-UIUE-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 AT25QL128A-UIUE-T meets industry standards.
7.What is the process for return or replacement of AT25QL128A-UIUE-T?
All AT25QL128A-UIUE-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25QL128A-UIUE-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 AT25QL128A-UIUE-T part is unused and in its original packaging.
Return procedure for AT25QL128A-UIUE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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