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Renesas AT25FF161A-UUNHD-T
- Part No.:
- AT25FF161A-UUNHD-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-XFBGA, WLCSP
- Datasheet:
-
AT25FF161A-UUNHD-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,840
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Product details
Overview
AT25FF161A-UUNHD-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 frequency 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 and direct code execution in resource-constrained embedded systems.
For engineers reviewing the AT25FF161A-UUNHD-T datasheet, AT25FF161A-UUNHD-T pinout, AT25FF161A-UUNHD-T application, or AT25FF161A-UUNHD-T equivalent, key selection considerations include XiP support, multi-I/O timing compliance (1-4-4, 0-4-4), OTP security register availability, JEDEC SFDP compatibility, and -40°C to +105°C extended temperature grade.
Technical Context
The AT25FF161A-UUNHD-T implements a flexible SPI interface with full backward compatibility across modes 0 and 3, plus advanced transfer protocols including dual output (1-1-2), quad output (1-1-4), quad I/O (1-4-4), and XiP (0-4-4). Its internal architecture supports nested erase/program suspend-resume operations and hardware reset via dedicated RESET# pin or JEDEC-standard command sequence.
It integrates five status registers (SR1–SR5) with volatile/non-volatile options, individual block protection, and user-definable protected regions at memory start/end. The device includes three 128-byte One-Time Programmable (OTP) security registers and a factory-programmed 128-byte unique identifier for secure boot and device authentication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (2 MB) - sufficient for firmware images, bootloader, and configuration data in compact MCU-based designs. |
| Supply Voltage Range | 1.65 V – 3.75 V - enables direct interfacing with 1.8 V, 2.5 V, and 3.3 V logic domains without level-shifting. |
| Max Clock Frequency | 133 MHz (1-4-4 mode) - achieves ~66.5 MB/s effective read bandwidth for real-time XiP execution. |
| Erase Granularity | 4-kB / 32-kB / 64-kB blocks + full chip - allows fine-grained firmware updates without erasing entire memory space. |
| Power Consumption | 5–7 nA UDPD current - extends battery life in always-on IoT edge nodes during deep sleep states. |
| Data Retention | 10 years at -40°C to +105°C - validated for automotive under-hood and industrial control applications. |
| Endurance | 100,000 program/erase cycles (at -40°C to +85°C); 10,000 cycles at -40°C to +105°C - supports field firmware upgrades over product lifetime. |
Pinout & Package
AT25FF161A-UUNHD-T is packaged in an 8-pad, 2 × 3 × 0.6 mm DFN (Dual Flat No-lead) package with wettable flank terminations for automated optical inspection (AOI) and reliable solder joint formation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS# | Chip Select | Active-low enable for SPI command/data transfers; supports daisy-chaining multiple devices on shared bus. |
| DO (IO1) | Data Output / I/O 1 | Primary data output in standard/dual/quad modes; bidirectional in quad I/O (1-4-4) and XiP (0-4-4) operations. |
| WP# | Write Protect | Hardware-enabled memory protection; asserts low to lock status registers and block protection bits. |
| HOLD# | Hold Function | Suspends ongoing SPI transaction without deselecting device; preserves state during host interrupt handling. |
| DI (IO0) | Data Input / I/O 0 | Primary data input in standard writes; bidirectional in quad I/O and XiP modes; supports command/address/data. |
| CLK | Clock Input | Drives all synchronous SPI operations; supports up to 133 MHz in quad I/O mode with precise setup/hold timing. |
| RESET# | Hardware Reset | Asynchronous active-low pin that resets internal state machine and status registers per JEDEC standard. |
| VSS | Ground | Reference return path for all digital and analog circuitry; requires low-impedance PCB plane connection. |
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 for real-time MCU code execution. |
| Erase/Program Suspend-Resume | Allows background firmware update (e.g., OTA patch) while maintaining system responsiveness via nested suspend/resume capability. |
| Three 128-byte OTP Registers | Provides immutable storage for cryptographic keys, device certificates, or calibration data - locked permanently after programming. |
| JEDEC SFDP Compliance | Enables automatic configuration of read commands, timing parameters, and memory map by host bootloader without hard-coded initialization. |
| User-Configurable I/O Drive Strength | Permits optimization of signal integrity and EMI in high-speed layouts by selecting drive levels per pin via status register settings. |
Applications
| Firmware Storage in Industrial PLCs | Secure Boot in Automotive ECUs |
|---|---|
Use Scenario: Stores firmware image and parameter tables for programmable logic controllers operating in harsh environments (-40°C to +105°C). IC Role / Device Role / Timing Role: Non-volatile program memory with XiP capability for deterministic boot and runtime code execution. Use Value: Eliminates external RAM copy step during boot, reducing BOM cost and power-up time by >15 ms versus traditional serial flash. |
Use Scenario: Holds signed bootloader and root-of-trust keys in engine control units requiring ISO 26262 ASIL-B compliance. IC Role / Device Role / Timing Role: Secure storage element with OTP registers for immutable key storage and hardware reset recovery. Use Value: Prevents unauthorized firmware modification via write-protection granularity down to 4-kB blocks and SR lock mechanisms. |
| Edge AI Sensor Node Firmware | Medical Diagnostic Device Configuration |
Use Scenario: Hosts inference model weights and sensor calibration data in battery-powered wearable health monitors. IC Role / Device Role / Timing Role: Low-power persistent memory with 5–7 nA UDPD current and fast wake-up (<10 µs) from deep sleep. Use Value: Extends battery life beyond 5 years in intermittent-sampling deployments while enabling rapid firmware updates over BLE. |
Use Scenario: Stores FDA-mandated calibration logs, device ID, and regulatory configuration profiles in portable ultrasound equipment. IC Role / Device Role / Timing Role: High-reliability data archive with 20-year retention at +85°C and traceable write-cycle history. Use Value: Meets IEC 62304 software lifecycle requirements through guaranteed endurance (100K cycles) and JEDEC-managed ID verification. |
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 | 16 Mbit, 1.7–2.0 V supply only; no UDPD mode; lacks OTP registers and SFDP v1.7 support. | Limited to 1.8 V systems; unsuitable for wide-voltage or secure-boot designs requiring OTP key storage. | Select AT25FF161A-UUNHD-T when multi-voltage support, ultra-low-power deep sleep, or hardware-enforced security are required. |
| Micron MT25QL128ABA | 128 Mbit density; supports 1.7–2.0 V and 2.7–3.6 V dual ranges; includes octal DTR but no XiP 0-4-4 mode. | Higher density for complex firmware; incompatible with legacy XiP implementations relying on 0-4-4 burst wrap behavior. | Choose AT25FF161A-UUNHD-T for compact 16-Mbit footprint, true 0-4-4 XiP, and seamless integration into existing Renesas-compatible bootloaders. |
Compared with W25Q16JW and MT25QL128ABA, the AT25FF161A-UUNHD-T uniquely combines 1.65–3.75 V operation, 0-4-4 XiP, OTP security, and sub-10 nA deep power-down - making it optimal for space-, power-, and security-constrained embedded systems.
Availability
AT25FF161A-UUNHD-T is available at Aetrix Electronics and suitable for industrial automation, automotive telematics, and medical diagnostics requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.
Supply support for AT25FF161A-UUNHD-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 AT25FF161A belongs to Renesas' high-performance serial flash memory product line, engineered for robust firmware storage, secure boot, and eXecute-in-Place operation in extended-temperature embedded systems.
FAQ
What is the operating temperature range supported by the AT25FF161A-UUNHD-T?
The AT25FF161A-UUNHD-T is rated for operation from -40°C to +105°C, validated for extended-temperature applications such as automotive engine control units and industrial motor drives. Data retention is guaranteed for 10 years across this full range, and endurance is specified at 10,000 program/erase cycles under these conditions. This makes the AT25FF161A-UUNHD-T suitable for under-hood and factory-floor deployments where thermal stress is critical.
Does the AT25FF161A-UUNHD-T support true eXecute-in-Place (XiP) operation?
Yes, the AT25FF161A-UUNHD-T supports true XiP via its 0-4-4 command format, which eliminates opcode transmission overhead and enables continuous burst reads with wrap-around addressing. This mode is fully compliant with JEDEC JESD216B SFDP v1.7, allowing automatic configuration by host bootloaders. The AT25FF161A-UUNHD-T achieves deterministic instruction fetch latency essential for real-time MCU applications without external RAM buffering.
How many One-Time Programmable (OTP) security registers does the AT25FF161A-UUNHD-T include?
The AT25FF161A-UUNHD-T includes three independent 128-byte OTP security registers, each programmable once and permanently lockable via dedicated command (9Bh) and lock sequence. These registers store cryptographic keys, device identifiers, or calibration constants with hardware-enforced immutability. Unlike volatile status bits, OTP contents survive power cycling and cannot be altered after lock - a critical feature for secure boot and anti-counterfeiting in the AT25FF161A-UUNHD-T.
What power-saving modes are available on the AT25FF161A-UUNHD-T?
The AT25FF161A-UUNHD-T offers three low-power states: Standby (30 µA typical), Deep Power-Down (DPD, 8.2 µA typical), and Ultra-Deep Power-Down (UDPD, 5–7 nA typical). UDPD mode retains full memory content and status register values while drawing nanoampere current, enabling multi-year battery operation in always-on edge sensors. Recovery from UDPD takes less than 10 µs, ensuring minimal latency impact on wake-up events in the AT25FF161A-UUNHD-T.
Is the AT25FF161A-UUNHD-T compatible with standard SPI controllers?
Yes, the AT25FF161A-UUNHD-T is fully compatible with standard SPI controllers supporting modes 0 and 3. It executes all basic commands (Read Array 03h, Page Program 02h, Write Enable 06h) using conventional single-I/O signaling. Dual and quad modes are optional enhancements; legacy SPI hosts can operate the AT25FF161A-UUNHD-T at full functionality without requiring hardware or firmware changes to support multi-I/O protocols.
AT25FF161A-UUNHD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR (SLC)
- Memory Size:
- 16Mbit
- Memory Organization:
- 2M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 32µs, 6.5ms
- Access Time:
- 8 ns
- Voltage - Supply:
- 1.65V ~ 3.75V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WLCSP (1.77x1.74)
AT25FF161A-UUNHD-T FAQ
1.How can I place an order for AT25FF161A-UUNHD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF161A-UUNHD-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-UUNHD-T reliable?
The price and inventory of AT25FF161A-UUNHD-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-UUNHD-T is usually 5 days.
3.What payment methods are accepted for AT25FF161A-UUNHD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF161A-UUNHD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF161A-UUNHD-T?
AT25FF161A-UUNHD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF161A-UUNHD-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-UUNHD-T?
For technical support, including AT25FF161A-UUNHD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF161A-UUNHD-T requirements.
6.How does Aetrix verify that AT25FF161A-UUNHD-T is sourced from the original manufacturer or authorized distributors?
All AT25FF161A-UUNHD-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-UUNHD-T meets industry standards.
7.What is the process for return or replacement of AT25FF161A-UUNHD-T?
All AT25FF161A-UUNHD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF161A-UUNHD-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-UUNHD-T part is unused and in its original packaging.
Return procedure for AT25FF161A-UUNHD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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