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Renesas AT25FF161A-DWF
- Part No.:
- AT25FF161A-DWF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- Die
- Datasheet:
-
AT25FF161A-DWF.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD WAFER
- Quantity:
- Payment:
- Shipping:
Inventory:4,070
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Product details
Overview
AT25FF161A-DWF 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 - deployed in embedded boot code storage and firmware update applications.
For engineers reviewing the AT25FF161A-DWF datasheet, AT25FF161A-DWF pinout, AT25FF161A-DWF application, or AT25FF161A-DWF equivalent, key selection criteria include XiP support for direct code execution, JEDEC SFDP compliance for auto-configuration, OTP security register capability, and DWF (die-in-wafer) packaging for custom module integration.
Technical Context
The AT25FF161A-DWF implements a flexible SPI interface with full backward compatibility across modes 0 and 3, plus advanced transfer protocols: dual output (1-1-2), quad output (1-1-4), quad I/O (1-4-4), and XiP (0-4-4). Its architecture supports nested erase/program suspend-resume operations and uses five status registers with volatile/non-volatile options for configuration control.
Memory protection includes individual block lock/unlock (36h/39h), global lock/unlock (7Eh/98h), and user-definable protected regions at memory start/end. The device integrates three 128-byte One-Time Programmable (OTP) security registers and a factory-programmed 128-byte unique ID for secure boot and device authentication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (2 MB) - sufficient for boot firmware + application code in resource-constrained microcontrollers. |
| Operating Voltage | 1.65 V – 3.75 V - enables single-supply operation across 1.8 V and 3.3 V systems without level shifting. |
| Max Clock Frequency | 133 MHz (1-4-4 mode) - achieves >50 MB/s effective read bandwidth for XiP latency-sensitive applications. |
| Erase Granularity | 4-kB / 32-kB / 64-kB blocks + full chip - allows fine-grained firmware patching without disturbing adjacent code sections. |
| Power-Down Current | 5–7 nA (Ultra-Deep Power-Down) - extends battery life in always-on IoT edge nodes during extended sleep intervals. |
| Data Retention | 20 years at –40 °C to +85 °C - meets industrial-grade reliability requirements for unattended field deployments. |
| Endurance | 100,000 program/erase cycles - supports frequent over-the-air (OTA) firmware updates over product lifetime. |
Pinout & Package
AT25FF161A-DWF is supplied as die-in-wafer (DWF) form, with no discrete package or leadframe. Terminal mapping follows standard 8-pin SPI flash pinout: VCC, GND, SI (serial input), SO (serial output), WP# (write protect), HOLD#, SCK (clock), and CS# (chip select).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS# | Chip Select | Active-low enable for SPI command/address/data transfers; required assertion before any operation. |
| SCK | Serial Clock | Master-generated clock synchronizing all SPI data transfers; supports up to 133 MHz in quad I/O mode. |
| SI | Serial Input | Input for commands, addresses, and write data in standard/dual/quad modes; also used for address in 1-4-4/XiP. |
| SO | Serial Output | Output for read data and status register contents; functions as bidirectional I/O in quad I/O mode. |
| WP# | Write Protect | Hardware-enabled protection of status registers and memory blocks; active-low, debounced for noise immunity. |
| HOLD# | Hold Function | Pauses ongoing serial transfer without deselecting device; retains internal state during host interrupt handling. |
| VCC | Power Supply | Single supply input (1.65–3.75 V); internally regulated for core logic and memory array operation. |
| GND | Ground | Reference return path for all digital and analog circuitry; requires low-impedance connection for stable timing. |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O (1-4-4) & XiP (0-4-4) | Enables direct code execution from flash with continuous burst reads, eliminating external RAM copy overhead in MCU boot sequences. |
| Serial Flash Discoverable Parameters (SFDP) | Allows host controller to auto-detect memory geometry, timing, and command set without hard-coded driver assumptions. |
| Three 128-byte OTP Security Registers | Supports immutable storage of cryptographic keys, device certificates, or calibration data - locked permanently after programming. |
| Erase/Program Suspend-Resume | Permits high-priority read access during background erase/write, critical for real-time systems requiring deterministic latency. |
| User-Configurable I/O Drive Strength | Adjusts output slew rate and current to match PCB trace impedance, reducing signal integrity issues on long or noisy buses. |
Applications
| Industrial PLC Firmware Storage | Automotive Infotainment Boot Memory |
|---|---|
Use Scenario: Storing bootloader and real-time control firmware in programmable logic controllers operating continuously in harsh environments. IC Role / Device Role / Timing Role: Primary non-volatile code storage with XiP capability enabling fast cold-start and deterministic boot timing. Use Value: 20-year data retention and 100K endurance ensure firmware integrity over 15+ year product lifecycles without refresh. | Use Scenario: Hosting boot images and OS kernel for automotive head units requiring AEC-Q100-compliant components. IC Role / Device Role / Timing Role: SPI-connected boot memory supporting 133 MHz quad I/O reads to meet ASIL-B boot time targets. Use Value: Ultra-deep power-down (5–7 nA) reduces standby leakage in always-on vehicle networks between ignition cycles. |
| Medical Edge Sensor Node Code Storage | Smart Home Gateway OTA Update Storage |
Use Scenario: Holding firmware and sensor calibration tables in battery-powered portable diagnostic devices with strict energy budgets. IC Role / Device Role / Timing Role: Low-voltage (1.65 V) operation and 30 µA standby current extend battery life while maintaining secure boot via OTP registers. Use Value: Factory-programmed unique ID enables device-specific firmware signing and anti-cloning in regulated healthcare deployments. | Use Scenario: Storing signed firmware images and rollback partitions for secure over-the-air updates in residential gateways. IC Role / Device Role / Timing Role: Dual/quad I/O modes accelerate firmware download verification; block-erase granularity enables atomic image swaps. Use Value: Individual block protection prevents corruption of active boot partition during concurrent update and runtime operations. |
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 operation only; lacks UDPD mode (<10 nA); no factory-unique ID. | Targeted at cost-sensitive consumer wearables; not rated for extended temperature or industrial longevity. | Select when 1.8 V system constraint dominates and ultra-low-power deep-sleep is non-critical. |
| Micron MT25QL128ABA | 128-Mbit density; supports 1.7–2.0 V and 2.7–3.6 V dual ranges; includes hardware reset pin (AT25FF161A-DWF has optional RESET#). | Used in high-end networking equipment requiring larger code space and JEDEC JESD216 rev B SFDP support. | Select when >16 Mbit capacity or mandatory hardware reset signaling is required in the design. |
Compared with W25Q16JW and MT25QL128ABA, the AT25FF161A-DWF uniquely balances ultra-low-power deep-sleep (5–7 nA), factory-unique ID, and broad voltage range (1.65–3.75 V) in a die-in-wafer format - making it optimal for space-constrained, battery-aware, and security-sensitive embedded modules.
Availability
AT25FF161A-DWF is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive infotainment boot memory, and medical edge sensor node code storage requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for AT25FF161A-DWF 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-DWF belongs to Renesas' high-reliability serial flash memory product line, engineered for robust code storage and secure firmware execution in mission-critical embedded systems operating across –40 °C to +105 °C.
FAQ
What is the operating voltage range supported by the AT25FF161A-DWF?
The AT25FF161A-DWF supports a wide operating voltage range of 1.65 V to 3.75 V, enabling interoperability with both 1.8 V and 3.3 V host systems without external level shifters. This range is validated across –40 °C to +105 °C ambient temperatures per datasheet Section 8.2 and Table 8.4.
Does the AT25FF161A-DWF support eXecute-in-Place (XiP) functionality?
Yes, the AT25FF161A-DWF supports XiP via its 0-4-4 command mode (EBh/E7h), which eliminates opcode retransmission during burst reads. This enables direct code execution from flash memory, reducing boot latency and external RAM dependency - confirmed in datasheet Sections 1 and 5.6.
How many One-Time Programmable (OTP) security registers does the AT25FF161A-DWF include?
The AT25FF161A-DWF includes three 128-byte OTP security registers (OTP0–OTP2), each programmable once and lockable permanently. These are used for storing cryptographic keys or device-unique credentials, as detailed in datasheet Sections 1, 5.11, and Tables 30–33.
What is the minimum deep power-down current specification for the AT25FF161A-DWF?
The AT25FF161A-DWF achieves an ultra-low 5–7 nA typical current in Ultra-Deep Power-Down (UDPD) mode (command 79h), verified per datasheet Section 8.10 and Table 8.12. This enables multi-year battery operation in intermittently active IoT endpoints.
Is the AT25FF161A-DWF supplied in a standard surface-mount package?
No - the AT25FF161A-DWF is delivered in die-in-wafer (DWF) form, intended for integration into custom modules or chip-scale assemblies. Standard packaged variants (e.g., SOIC, DFN, WLCSP) use different suffixes; DWF denotes bare die with wafer-level probing and tape-and-reel delivery.
AT25FF161A-DWF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- 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:
- Wafer
AT25FF161A-DWF FAQ
1.How can I place an order for AT25FF161A-DWF through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF161A-DWF 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-DWF reliable?
The price and inventory of AT25FF161A-DWF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25FF161A-DWF is usually 5 days.
3.What payment methods are accepted for AT25FF161A-DWF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF161A-DWF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF161A-DWF?
AT25FF161A-DWF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF161A-DWF 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-DWF?
For technical support, including AT25FF161A-DWF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF161A-DWF requirements.
6.How does Aetrix verify that AT25FF161A-DWF is sourced from the original manufacturer or authorized distributors?
All AT25FF161A-DWF 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-DWF meets industry standards.
7.What is the process for return or replacement of AT25FF161A-DWF?
All AT25FF161A-DWF units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF161A-DWF, 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-DWF part is unused and in its original packaging.
Return procedure for AT25FF161A-DWF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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