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Renesas AT25FF161A-UUN-T
- Part No.:
- AT25FF161A-UUN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-XFBGA, WLCSP
- Datasheet:
-
AT25FF161A-UUN-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,573
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Product details
Overview
AT25FF161A-UUN-T from Renesas Electronics is a 16-Mbit SPI serial flash memory IC supporting quad I/O, XiP (eXecute-in-Place), and multi-voltage operation (1.65 V–3.75 V). It delivers up to 133 MHz read speed in 1-4-4 mode, features 4/32/64-kB block erase, 100,000 program/erase cycles, and ultra-low 5–7 nA Ultra-Deep Power-Down current. It is used for firmware storage, boot code execution, and secure configuration data in resource-constrained embedded systems.
For engineers reviewing the AT25FF161A-UUN-T datasheet, AT25FF161A-UUN-T pinout, AT25FF161A-UUN-T application, or AT25FF161A-UUN-T equivalent, key selection criteria include XiP capability, multi-I/O timing compliance, OTP security register support, JEDEC SFDP compatibility, and industrial temperature grade (-40°C to +105°C) with green packaging.
Technical Context
The AT25FF161A-UUN-T implements a flexible SPI interface supporting standard (1-1-1), dual-output (1-1-2), quad-output (1-1-4), quad I/O (1-4-4), and XiP (0-4-4) transfer modes. Its memory architecture includes uniform 4-kB sectors and configurable protection via individual block lock, global lock, and user-definable protected areas at memory boundaries.
It integrates five status registers (SR1–SR5) with non-volatile/volatile variants, supports erase/program suspend/resume, and provides three 128-byte One-Time Programmable (OTP) security registers plus one factory-programmed 128-byte unique ID. Power management includes Deep Power-Down (B9h) and Ultra-Deep Power-Down (79h) commands with sub-10 nA quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (2 MB) organized as 2,097,152 bytes; enables compact firmware storage without external memory expansion. |
| Supply Voltage Range | 1.65 V to 3.75 V; supports direct interfacing with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| Max Clock Frequency | 133 MHz in 1-4-4 quad I/O mode; achieves >50 MB/s effective read throughput for fast boot and XiP latency reduction. |
| Erase Granularity | 4-kB, 32-kB, 64-kB blocks, and full chip; allows fine-grained firmware updates and wear leveling in OTA applications. |
| Data Retention | 10 years at -40°C to +105°C; validated for automotive under-hood and industrial control environments. |
| Power Consumption | 5–7 nA in Ultra-Deep Power-Down; extends battery life in always-on sensor nodes and low-power IoT endpoints. |
| Endurance | 100,000 program/erase cycles at -40°C to +85°C; sufficient for field-upgradable firmware with frequent patching. |
Pinout & Package
AT25FF161A-UUN-T is packaged in an 8-pad, 2 × 3 × 0.6 mm DFN (Dual Flat No-lead) package with wettable flanks, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS# | Chip Select Input | Active-low enable for SPI command/data transactions; supports daisy-chaining and multi-device bus sharing. |
| DO (IO1) | Serial Data Output / I/O | Primary output in standard/dual mode; bidirectional in quad I/O/XiP modes; supports 1-1-4 and 1-4-4 protocols. |
| WP# (IO2) | Write Protect Input / I/O | Hardware write protection when asserted low; also functions as IO2 in quad I/O mode for address/data multiplexing. |
| HOLD# (IO3) | Hold Input / I/O | Suspends ongoing SPI transfer without deselecting device; doubles as IO3 in quad I/O mode. |
| DI (IO0) | Serial Data Input / I/O | Command/address/data input in all modes; serves as IO0 in quad I/O, enabling full 4-line bidirectional communication. |
| CLK | Serial Clock Input | Master-generated clock driving all SPI transfers; supports up to 133 MHz with setup/hold timing compliant to JEDEC JESD22-A101. |
| VCC | Power Supply | 1.65–3.75 V supply; internally regulated for stable core voltage across wide input range. |
| VSS | Ground | Reference ground for all I/O and internal circuitry; requires low-impedance connection for noise immunity in high-speed reads. |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O & XiP Support | Enables 0-4-4 continuous read mode with no opcode overhead, reducing instruction fetch latency by >40% vs. standard SPI in microcontroller boot scenarios. |
| Three 128-byte OTP Registers | Allows permanent storage of cryptographic keys, calibration data, or device-specific credentials-locked permanently after programming. |
| Ultra-Deep Power-Down (UDPD) | 5–7 nA standby current enables multi-year battery operation in wireless sensor nodes and energy-harvesting edge devices. |
| Flexible Block Protection | Individual block lock, global lock, and start/end memory array protection prevent accidental firmware overwrite during field updates. |
| JEDEC SFDP Compliance | Self-describing parameter table (5Ah command) allows automatic driver initialization and runtime configuration on Linux/RTOS platforms. |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers with periodic over-the-air patches. IC Role / Device Role / Timing Role: Non-volatile program memory providing reliable boot image storage and incremental update capability via 4-kB sector erase. Use Value: 100,000 endurance cycles and 10-year data retention at +105°C ensure long-term reliability in unattended factory-floor deployments. | Use Scenario: Hosting boot code and safety-critical sensor fusion algorithms for camera/radar ECUs requiring deterministic startup timing. IC Role / Device Role / Timing Role: XiP-capable flash executing directly from 1-4-4 quad I/O interface to minimize boot time and eliminate RAM copy overhead. Use Value: 133 MHz max clock and continuous read mode reduce cold-boot latency by ≥35% compared to legacy SPI NOR devices. |
| IoT Edge Node Configuration | Medical Wearable Secure Storage |
Use Scenario: Holding calibrated sensor offsets, network credentials, and firmware version metadata in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Low-power serial flash with UDPD mode and OTP registers securing sensitive device identity and calibration data. Use Value: 5–7 nA UDPD current extends coin-cell battery life beyond 5 years; OTP registers prevent credential tampering post-manufacture. | Use Scenario: Storing FDA-compliant device logs, encryption keys, and regulatory certification data in Class II wearable health monitors. IC Role / Device Role / Timing Role: Secure non-volatile memory with hardware reset, JEDEC ID, and SR lock preventing unauthorized reprogramming. Use Value: Individual block protection and status register lock ensure immutable audit trails and cryptographic key integrity per HIPAA/MDCG requirements. |
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 W25Q16JW-QI | 16 Mbit, 1.65–3.6 V, 133 MHz quad I/O, but lacks XiP 0-4-4 mode and has only two 128-byte OTP registers. | Supports standard firmware storage but not continuous-read XiP execution; lower security depth for key storage. | Select when XiP and third OTP register are not required; verify SFDP v1.6+ compatibility for driver reuse. |
| Micron MT25QL128ABA8E12-0SIT | 128 Mbit density, 1.7–2.0 V only, 133 MHz, supports XiP and SFDP v1.6, but no UDPD mode (<1 µA DPD only). | Higher capacity for complex firmware; incompatible voltage range limits use in mixed-supply systems. | Choose for larger code footprints where 1.7–2.0 V rail is available; avoid if ultra-low-power sleep states are mandatory. |
Compared with W25Q16JW-QI and MT25QL128ABA8E12-0SIT, the AT25FF161A-UUN-T uniquely combines 1.65–3.75 V operation, true 0-4-4 XiP, triple OTP registers, and sub-10 nA UDPD-making it optimal for compact, secure, battery-sensitive industrial and medical edge devices.
Availability
AT25FF161A-UUN-T is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS ECUs, IoT sensor nodes, and medical wearables requiring stable component supply, long-lifecycle support, and RoHS-compliant green packaging.
Supply support for AT25FF161A-UUN-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 specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and enterprise applications.
The AT25FF161A belongs to Renesas' high-performance serial flash product line, engineered for robust firmware storage, secure boot, and low-power edge execution in harsh thermal and electrical environments.
FAQ
What is the operating temperature range supported by the AT25FF161A-UUN-T?
The AT25FF161A-UUN-T is rated for industrial and extended temperature operation from -40°C to +105°C. This rating is validated per JEDEC JESD22-A108 and applies to all specified DC/AC characteristics, including 100,000 program/erase cycles and 10-year data retention, making it suitable for under-hood automotive and factory-floor industrial use cases.
Does the AT25FF161A-UUN-T support eXecute-in-Place (XiP) operation?
Yes, the AT25FF161A-UUN-T supports true XiP via its 0-4-4 command format, which eliminates opcode transmission overhead and enables continuous burst reads. This mode is fully documented in Section 5.6 of the datasheet and requires host controller support for 4-line address/data multiplexing and proper timing alignment.
How many One-Time Programmable (OTP) security registers does the AT25FF161A-UUN-T include?
The AT25FF161A-UUN-T includes three 128-byte OTP security registers (OTP0–OTP2), each individually lockable via dedicated commands (9Bh/9Ch). Once locked, their contents cannot be altered or erased, providing hardware-enforced immutability for keys, certificates, or calibration data.
What is the minimum current consumption in Ultra-Deep Power-Down mode for the AT25FF161A-UUN-T?
The AT25FF161A-UUN-T draws 5–7 nA typical current in Ultra-Deep Power-Down (UDPD) mode, activated via the 79h command. This ultra-low quiescent current is measured at VCC = 3.0 V and TA = 25°C per Section 8.1, enabling multi-year operation on primary lithium batteries in always-on edge sensors.
Is the AT25FF161A-UUN-T compatible with JEDEC Serial Flash Discoverable Parameters (SFDP)?
Yes, the AT25FF161A-UUN-T fully complies with JEDEC JESD216B SFDP v1.6, accessible via the 5Ah command. The SFDP table includes vendor-specific extensions for OTP configuration, XiP timing parameters, and UDPD entry/exit sequences-enabling automated driver initialization on Linux, Zephyr, and FreeRTOS platforms.
AT25FF161A-UUN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 16Mbit
- Memory Organization:
- 2M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 12µs, 8ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WLCSP (1.77x1.74)
AT25FF161A-UUN-T FAQ
1.How can I place an order for AT25FF161A-UUN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF161A-UUN-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 AT25FF161A-UUN-T reliable?
The price and inventory of AT25FF161A-UUN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25FF161A-UUN-T is usually 5 days.
3.What payment methods are accepted for AT25FF161A-UUN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF161A-UUN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF161A-UUN-T?
AT25FF161A-UUN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF161A-UUN-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 AT25FF161A-UUN-T?
For technical support, including AT25FF161A-UUN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF161A-UUN-T requirements.
6.How does Aetrix verify that AT25FF161A-UUN-T is sourced from the original manufacturer or authorized distributors?
All AT25FF161A-UUN-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 AT25FF161A-UUN-T meets industry standards.
7.What is the process for return or replacement of AT25FF161A-UUN-T?
All AT25FF161A-UUN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF161A-UUN-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 AT25FF161A-UUN-T part is unused and in its original packaging.
Return procedure for AT25FF161A-UUN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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