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Renesas AT25FF161A-MMUN-T
- Part No.:
- AT25FF161A-MMUN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
AT25FF161A-MMUN-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,291
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Product details
Overview
AT25FF161A-MMUN-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 deep power-down current. It is used for firmware storage and direct code execution in resource-constrained embedded systems.
For engineers reviewing the AT25FF161A-MMUN-T datasheet, AT25FF161A-MMUN-T pinout, AT25FF161A-MMUN-T application, or AT25FF161A-MMUN-T equivalent, key selection criteria include XiP support, multi-I/O timing compliance (1-4-4/0-4-4), JEDEC SFDP compatibility, OTP security register availability, and industrial temperature grade (-40°C to +105°C) with green packaging.
Technical Context
The AT25FF161A-MMUN-T implements a flexible SPI command set compliant with JEDEC JESD216 (SFDP v1.6), enabling auto-configuration of read modes and timing parameters. Its 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 non-volatile/volatile variants, individual block lock/unlock commands (36h/39h), global protection (7Eh/98h), and three 128-byte OTP security registers-each programmable once and lockable per bit. Memory protection is configurable at start/end of array or per 4-kB block.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (2 MB), organized as 2,097,152 bytes for firmware image or configuration data storage |
| Supply Voltage Range | 1.65 V – 3.75 V - enables single-rail operation across 1.8 V, 2.5 V, and 3.3 V host systems |
| Max Clock Frequency | 133 MHz in 1-4-4 quad I/O mode - achieves ~532 MB/s effective throughput for XiP boot |
| Erase Granularity | 4-kB / 32-kB / 64-kB blocks + full chip - allows fine-grained firmware updates without full reflash |
| Power Consumption | 5–7 nA Ultra-Deep Power-Down current - extends battery life in always-on IoT edge nodes |
| 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 |
Pinout & Package
AT25FF161A-MMUN-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 Input | Active-low enable for SPI command/address/data transfer; supports daisy-chaining with multiple devices |
| DO (IO1) | Serial Data Output / I/O | Primary output in standard/dual/quad read; bidirectional in quad I/O (1-4-4) and XiP modes |
| WP# (IO2) | Write Protect Input / I/O | Hardware write protection when asserted low; functions as IO2 in quad I/O mode |
| HOLD# (IO3) | Hold Input / I/O | Suspends ongoing SPI transfer without deselecting device; acts as IO3 in quad I/O mode |
| DIO (IO0) | Serial Data Input / I/O | Primary input in program/erase; bidirectional in quad I/O and XiP; supports address/data multiplexing |
| CLK | Serial Clock Input | Master-generated clock driving all SPI transfers; supports up to 133 MHz in quad I/O mode |
| VCC | Power Supply | Single 1.65–3.75 V supply; decoupling required per datasheet layout guidelines |
| GND | Ground Reference | Common return path for all signals and power; critical for noise immunity in high-speed quad I/O operation |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O & XiP Support | Enables direct code execution from flash using 0-4-4 continuous read mode, eliminating RAM copy overhead in MCU boot sequences |
| Three 128-byte OTP Registers | Provides immutable storage for cryptographic keys, device IDs, or calibration data - each byte individually lockable after programming |
| Erase/Program Suspend-Resume | Allows background firmware update (e.g., OTA patch) while maintaining real-time system responsiveness via interruptible flash operations |
| User-Configurable I/O Drive Strength | Permits optimization of signal integrity and EMI on varying PCB trace lengths and loads without hardware change |
| JEDEC SFDP v1.6 Compliance | Enables automatic initialization and mode selection by host bootloader, reducing firmware integration effort and improving interoperability |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating continuously in harsh factory environments. IC Role / Device Role / Timing Role: Non-volatile program memory with 10-year data retention at +105°C and 10,000-cycle endurance for field firmware patches. Use Value: Eliminates need for external EEPROM or backup battery; supports secure over-the-air updates via OTP-protected authentication keys. | Use Scenario: Hosting boot code and sensor fusion algorithms for camera/radar ECUs requiring fast startup and deterministic execution latency. IC Role / Device Role / Timing Role: XiP-capable flash delivering 133 MHz quad I/O reads to reduce boot time and offload RAM usage in safety-critical ADAS domains. Use Value: Enables sub-100 ms cold boot via 0-4-4 continuous read mode while meeting AEC-Q100 Grade 2 temperature requirements. |
| IoT Edge Node Configuration | Medical Wearable Data Logger |
Use Scenario: Storing calibrated sensor offsets, network credentials, and firmware version metadata in battery-powered smart meters and gateways. IC Role / Device Role / Timing Role: Low-power configuration store with 5–7 nA UDPD current and hardware write protection (WP#) against accidental corruption. Use Value: Extends 10-year battery life in sealed deployments; OTP registers securely bind device identity to cloud provisioning services. | Use Scenario: Recording physiological waveforms and device settings in compact, sterilizable wearable monitors with strict size and power constraints. IC Role / Device Role / Timing Role: Compact 2×3 mm DFN flash providing 2 MB storage in space-limited PCBs while maintaining -40°C to +85°C clinical operating range. Use Value: Reduces BOM count by integrating firmware + logging storage; wettable flank leads ensure AOI-compatible reflow for medical-grade assembly. |
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 (<5 µA); lacks OTP registers and SFDP v1.6 | Targeted at cost-sensitive consumer devices; not rated for extended temperature or secure boot use cases | Select if operating strictly at 1.8 V and security/retention requirements are relaxed |
| Micron MT25QL128ABA | 128 Mbit density; 1.7–2.0 V; supports 133 MHz quad I/O but no XiP 0-4-4 mode; includes 4 KB sector protection only | Used in high-density applications where firmware size exceeds 2 MB; requires larger PCB footprint | Select when >16 Mbit capacity is needed and host supports legacy command set without SFDP auto-negotiation |
Compared with W25Q16JW and MT25QL128ABA, the AT25FF161A-MMUN-T uniquely combines ultra-low-power UDPD, industrial-grade retention, OTP-based security, and true XiP-enabling 0-4-4 mode - making it optimal for secure, long-life, space-constrained embedded designs.
Availability
AT25FF161A-MMUN-T is available at Aetrix Electronics and suitable for industrial automation, automotive ADAS, and medical wearables requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for AT25FF161A-MMUN-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 IoT markets.
The AT25FF161A-MMUN-T belongs to Renesas' high-reliability serial flash product line, engineered for robust firmware storage and secure XiP execution in mission-critical embedded systems operating across extended temperature ranges.
FAQ
What is the operating temperature range supported by the AT25FF161A-MMUN-T?
The AT25FF161A-MMUN-T is qualified for industrial and extended temperature operation from -40°C to +105°C. This rating is validated per JEDEC standards and supports deployment in automotive under-hood modules, factory-floor PLCs, and outdoor IoT gateways where ambient thermal stress is significant. The AT25FF161A-MMUN-T maintains full 10,000 program/erase cycle endurance and 10-year data retention within this range.
Does the AT25FF161A-MMUN-T support execute-in-place (XiP) functionality?
Yes, the AT25FF161A-MMUN-T fully supports eXecute-in-Place (XiP) via its 0-4-4 and 1-4-4 quad I/O read modes. The 0-4-4 mode eliminates command opcode transmission during continuous reads, enabling deterministic low-latency instruction fetch directly from flash. This capability is confirmed in the AT25FF161A-MMUN-T datasheet Section 5.6 and Table 20 command listing (EBh/E7h).
How many one-time programmable (OTP) security registers does the AT25FF161A-MMUN-T include?
The AT25FF161A-MMUN-T includes three 128-byte One Time Programmable (OTP) security registers, accessible via command 9Bh (Program Security Register) and readable via 4Bh. Each register supports bit-level locking after programming, and their contents persist through power cycles and temperature extremes. This feature is documented in the AT25FF161A-MMUN-T datasheet Sections 1.1 and 7.22–7.23.
What power-down modes are available on the AT25FF161A-MMUN-T, and what are their typical currents?
The AT25FF161A-MMUN-T offers Deep Power-Down (DPD) at 8.2 µA typical and Ultra-Deep Power-Down (UDPD) at 5–7 nA typical. Both modes are entered via B9h and 79h commands respectively, and exited using ABh. These ultra-low states are critical for battery-operated edge sensors and wearables where multi-year operation is required. All values are specified in AT25FF161A-MMUN-T datasheet Section 7.29–7.31 and Table 7.
Is the AT25FF161A-MMUN-T compatible with JEDEC Serial Flash Discoverable Parameters (SFDP)?
Yes, the AT25FF161A-MMUN-T implements JEDEC JESD216 standard SFDP v1.6, accessible via command 5Ah. This enables automatic detection of supported read modes, timing parameters, and erase block structures by host bootloaders - simplifying firmware portability across platforms. SFDP table contents are defined in AT25FF161A-MMUN-T datasheet Section 7.37 and Table 40.
AT25FF161A-MMUN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- 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:
- 50µs, 7ms
- Access Time:
- 8 ns
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WDFN (5x6)
AT25FF161A-MMUN-T FAQ
1.How can I place an order for AT25FF161A-MMUN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF161A-MMUN-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-MMUN-T reliable?
The price and inventory of AT25FF161A-MMUN-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-MMUN-T is usually 5 days.
3.What payment methods are accepted for AT25FF161A-MMUN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF161A-MMUN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF161A-MMUN-T?
AT25FF161A-MMUN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF161A-MMUN-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-MMUN-T?
For technical support, including AT25FF161A-MMUN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF161A-MMUN-T requirements.
6.How does Aetrix verify that AT25FF161A-MMUN-T is sourced from the original manufacturer or authorized distributors?
All AT25FF161A-MMUN-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-MMUN-T meets industry standards.
7.What is the process for return or replacement of AT25FF161A-MMUN-T?
All AT25FF161A-MMUN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF161A-MMUN-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-MMUN-T part is unused and in its original packaging.
Return procedure for AT25FF161A-MMUN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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