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Renesas AT25FF161A-MMUE-T
- Part No.:
- AT25FF161A-MMUE-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
AT25FF161A-MMUE-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,978
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Product details
Overview
AT25FF161A-MMUE-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 deep power-down current. It is deployed in embedded boot code storage and real-time firmware update systems.
For engineers reviewing the AT25FF161A-MMUE-T datasheet, AT25FF161A-MMUE-T pinout, AT25FF161A-MMUE-T application, or AT25FF161A-MMUE-T equivalent, key selection considerations include its 8-pin DFN (2 × 3 × 0.6 mm) package, JEDEC SFDP compliance, hardware reset support, OTP security registers, and verified XiP capability across -40 °C to +105 °C.
Technical Context
The AT25FF161A-MMUE-T implements a flexible SPI interface with full backward compatibility for 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 continuous-read XiP (0-4-4). Its memory architecture supports nested erase/program suspend-resume operations and configurable burst wrap addressing.
It integrates five status registers (SR1–SR5) with non-volatile and volatile variants, individual block lock/unlock commands (36h/39h), global protection (7Eh/98h), and three 128-byte One-Time Programmable (OTP) security registers. Power management includes Deep Power-Down (B9h) and Ultra-Deep Power-Down (79h) with sub-10 nA quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (2 MB) - sufficient for boot firmware, configuration data, and small application binaries in space-constrained designs. |
| Supply Voltage | 1.65 V – 3.75 V - enables direct interfacing with 1.8 V, 2.5 V, and 3.3 V host controllers without level-shifting. |
| Max Clock Frequency | 133 MHz (1-4-4 mode) - achieves >50 MB/s effective read bandwidth for XiP and high-speed data retrieval. |
| Erase Granularity | 4-kB / 32-kB / 64-kB blocks + full chip - allows fine-grained firmware patching and efficient wear leveling in OTA update stacks. |
| Endurance & Retention | 100,000 cycles / 10 years @ 105 °C - validated for industrial-grade field deployment with frequent reprogramming. |
| Power Consumption | 5–7 nA UDPD current - extends battery life in always-on IoT edge nodes during extended sleep intervals. |
| Security Features | 3 × 128-byte OTP registers + factory UID - supports secure boot key binding, device identity attestation, and anti-cloning measures. |
Pinout & Package
AT25FF161A-MMUE-T is packaged in an 8-pad, 2 × 3 × 0.6 mm DFN (Dual Flat No-lead) with wettable flank profile, optimized for automated optical inspection (AOI) and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - /CS | Chip Select | Active-low enable for SPI command/address/data transfers; supports daisy-chaining in multi-device buses. |
| 2 - DO (IO1) | Data Output / I/O 1 | Primary data output in standard SPI; functions as bidirectional I/O in quad I/O mode (1-4-4/0-4-4). |
| 3 - /WP | Write Protect | Hardware pin to lock status register bits and memory blocks; overrides software write-enable state when asserted. |
| 4 - GND | Ground | Reference return path for all I/O and core logic; requires low-impedance connection to minimize noise coupling. |
| 5 - SI (IO0) | Serial Input / I/O 0 | Command/address/data input in standard SPI; bidirectional in quad I/O mode for full-duplex transfers. |
| 6 - SO (IO1) | Serial Output / I/O 1 | Legacy SO pin repurposed as second I/O line in dual/quad modes; enables 2-bit or 4-bit parallel data lanes. |
| 7 - /HOLD | Hold Control | Pauses ongoing SPI transaction without deselecting device; preserves internal state during host interrupt latency. |
| 8 - VCC | Power Supply | Single-supply input supporting 1.65–3.75 V; decoupling capacitor (≥100 nF) required within 3 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O & XiP Support | Enables zero-wait-state execution directly from flash via 0-4-4 command format, eliminating external RAM copy overhead in MCU boot sequences. |
| Erase/Program Suspend-Resume | Allows background firmware updates to pause mid-operation for urgent host tasks, then resume without data loss or timeout failure. |
| User-Configurable I/O Drive Strength | Adjusts output slew rate and current drive per pin to match trace impedance and reduce EMI in high-speed routing. |
| SFDP Compliance | Provides standardized, vendor-agnostic parameter tables readable at runtime-enabling automatic driver initialization across multiple flash vendors. |
| JEDEC Hardware Reset | Guarantees deterministic recovery from bus lockup or voltage brownout without requiring host GPIO coordination. |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
Use Scenario: Storing and updating ladder logic, motion control algorithms, and safety-critical firmware in programmable logic controllers operating continuously at 85 °C ambient. IC Role / Device Role / Timing Role: Non-volatile boot memory with XiP capability and 10-year data retention at 105 °C, serving as primary code source for ARM Cortex-M7 microcontrollers. Use Value: Eliminates external RAM load step during cold start, reducing boot time by ≥120 ms and enabling deterministic <500 ms system readiness. | Use Scenario: Hosting camera sensor calibration data, neural network inference weights, and boot-time configuration for vision processing units in Level 2+ ADAS ECUs. IC Role / Device Role / Timing Role: Secure, high-reliability serial flash with OTP registers for cryptographic key binding and hardware-enforced memory protection zones. Use Value: Prevents unauthorized firmware modification via SR lock bits and /WP pin, satisfying ISO 21434 cybersecurity requirements for automotive ECUs. |
| IoT Edge Node Configuration | Medical Wearable Data Logger |
Use Scenario: Storing device-specific calibration coefficients, network credentials, and OTA update staging buffers in battery-powered smart meters and environmental sensors. IC Role / Device Role / Timing Role: Low-power serial flash with 5–7 nA UDPD current and fast wake-up (<10 µs), managed by ultra-low-power microcontrollers (e.g., Silicon Labs EFM32). Use Value: Extends 10-year battery life by reducing average sleep current by 3× versus legacy SPI flash alternatives. | Use Scenario: Recording physiological waveforms (ECG, SpO₂) and timestamped event logs in Class II wearable medical devices requiring FDA-compliant data integrity. IC Role / Device Role / Timing Role: AEC-Q200 qualified flash memory with 100,000 endurance cycles and block-level protection to prevent accidental overwrite of clinical audit trails. Use Value: Ensures regulatory compliance via hardware-based write protection and guaranteed 20-year data retention at body temperature (37 °C). |
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 range only; no UDPD mode; 10-year retention limited to 85 °C. | Lacks ultra-deep power-down and extended temperature support - unsuitable for battery-backed or high-temp industrial use. | Select AT25FF161A-MMUE-T when operating below 1.7 V or above 85 °C is required. |
| Macronix MX25L1633F | 16 Mbit, supports 133 MHz quad I/O but no XiP continuous-read (0-4-4); OTP registers not implemented. | No native execute-in-place capability or hardware security registers - limits secure boot and low-latency code execution. | Choose AT25FF161A-MMUE-T for XiP-dependent boot architectures and cryptographic key storage needs. |
Compared with W25Q16JW and MX25L1633F, the AT25FF161A-MMUE-T uniquely combines ultra-low-power UDPD, full-temperature-range XiP, and integrated OTP security - making it the only option meeting simultaneous requirements for extended battery life, deterministic boot timing, and hardware-rooted trust in edge-class devices.
Availability
AT25FF161A-MMUE-T is available at Aetrix Electronics and suitable for industrial automation, automotive ADAS, and medical wearable applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.
Supply support for AT25FF161A-MMUE-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 industrial, automotive, and enterprise markets.
The AT25FF161A belongs to Renesas' high-performance serial flash product line, engineered for robustness in extended-temperature environments and feature-rich integration-including XiP, SFDP, and hardware security-to accelerate secure, low-power embedded system development.
FAQ
What is the operating temperature range supported by the AT25FF161A-MMUE-T?
The AT25FF161A-MMUE-T is rated for operation from -40 °C to +105 °C. This extended industrial temperature grade ensures reliable performance in demanding environments such as automotive engine compartments, industrial motor drives, and outdoor infrastructure equipment where ambient temperatures exceed standard commercial ranges. The device maintains full specification compliance-including 100,000 program/erase cycles and 10-year data retention-at the full upper limit.
Does the AT25FF161A-MMUE-T support execute-in-place (XiP) functionality?
Yes, the AT25FF161A-MMUE-T fully supports eXecute-in-Place (XiP) via its 0-4-4 command mode, which enables continuous quad I/O reads without repeated command opcodes. This eliminates instruction fetch latency associated with traditional SPI flash and allows ARM Cortex-M or RISC-V cores to run application code directly from the AT25FF161A-MMUE-T address space-reducing system BOM cost and boot time.
How many One-Time Programmable (OTP) security registers does the AT25FF161A-MMUE-T include?
The AT25FF161A-MMUE-T includes three 128-byte One-Time Programmable (OTP) security registers, accessible via command 9Bh. These registers are used to store immutable keys, device identifiers, or cryptographic certificates. Once programmed and locked, their contents cannot be altered-providing hardware-enforced root-of-trust for secure boot and firmware authentication workflows involving the AT25FF161A-MMUE-T.
What power-down modes are available on the AT25FF161A-MMUE-T, and what are their typical currents?
The AT25FF161A-MMUE-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 is entered via command 79h and exited using ABh with device ID verification. This ultra-low quiescent current makes the AT25FF161A-MMUE-T ideal for energy-harvesting and coin-cell-powered IoT endpoints requiring multi-year battery life.
Is the AT25FF161A-MMUE-T compatible with JEDEC-standard Serial Flash Discoverable Parameters (SFDP)?
Yes, the AT25FF161A-MMUE-T implements JEDEC JESD216 compliant Serial Flash Discoverable Parameters (SFDP), accessible via command 5Ah. This allows host processors to auto-detect memory geometry, timing parameters, and feature support-including quad I/O, XiP, and erase block sizes-without hard-coded driver assumptions. SFDP support simplifies firmware portability across flash vendors and enables dynamic driver initialization in the AT25FF161A-MMUE-T ecosystem.
AT25FF161A-MMUE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- 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:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 1.7V ~ 2V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WDFN (5x6)
AT25FF161A-MMUE-T FAQ
1.How can I place an order for AT25FF161A-MMUE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF161A-MMUE-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-MMUE-T reliable?
The price and inventory of AT25FF161A-MMUE-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-MMUE-T is usually 5 days.
3.What payment methods are accepted for AT25FF161A-MMUE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF161A-MMUE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF161A-MMUE-T?
AT25FF161A-MMUE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF161A-MMUE-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-MMUE-T?
For technical support, including AT25FF161A-MMUE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF161A-MMUE-T requirements.
6.How does Aetrix verify that AT25FF161A-MMUE-T is sourced from the original manufacturer or authorized distributors?
All AT25FF161A-MMUE-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-MMUE-T meets industry standards.
7.What is the process for return or replacement of AT25FF161A-MMUE-T?
All AT25FF161A-MMUE-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF161A-MMUE-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-MMUE-T part is unused and in its original packaging.
Return procedure for AT25FF161A-MMUE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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