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Renesas AT25FF161A-SSHNHD-T
- Part No.:
- AT25FF161A-SSHNHD-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25FF161A-SSHNHD-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,995
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Product details
Overview
AT25FF161A-SSHNHD-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 clock 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, boot code execution, and secure configuration data in industrial controllers and IoT edge nodes.
For engineers reviewing the AT25FF161A-SSHNHD-T datasheet, AT25FF161A-SSHNHD-T pinout, AT25FF161A-SSHNHD-T application, or AT25FF161A-SSHNHD-T equivalent, key selection considerations include XiP readiness, JEDEC SFDP compliance, OTP security register support, dual/quad I/O timing margins, and -40°C to +105°C extended temperature operation.
Technical Context
The AT25FF161A-SSHNHD-T implements a flexible SPI interface with hardware reset capability, JEDEC-standard manufacturer/device ID, and Serial Flash Discoverable Parameters (SFDP) v1.6. Its memory architecture supports nested erase/program suspend-resume operations and configurable burst wrap addressing for optimized sequential access.
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-enabling secure boot key storage and device authentication in resource-constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (2 MB) - sufficient for full MCU boot images and firmware updates in compact edge devices. |
| Supply Voltage Range | 1.65 V – 3.75 V - enables direct interfacing with 1.8 V, 2.5 V, and 3.3 V host microcontrollers without level-shifting. |
| Max Clock Frequency | 133 MHz (1-4-4 mode) - achieves >50 MB/s effective read throughput for real-time XiP execution. |
| Erase Granularity | 4-kB / 32-kB / 64-kB blocks + full chip - allows fine-grained firmware patching and wear leveling in OTA update stacks. |
| Power-Down Current | 5–7 nA (Ultra-Deep Power-Down) - extends battery life in always-on sensor nodes and low-duty-cycle IoT endpoints. |
| Data Retention | 10 years at -40°C to +105°C - meets automotive-grade reliability requirements for 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-updatable firmware in harsh thermal environments. |
Pinout & Package
AT25FF161A-SSHNHD-T is packaged in an 8-pad, 2 × 3 × 0.6 mm DFN (Dual Flat No-lead) package with wettable flank profile for automated optical inspection (AOI) and solder joint reliability. Pinout conforms to standard SPI serial flash layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - /CS | Chip Select | Active-low enable for SPI command/data transfer; supports daisy-chaining multiple devices on shared bus. |
| 2 - DO (IO1) | Data Output / I/O 1 | Primary output in standard SPI; functions as bidirectional I/O in quad I/O (1-4-4) and XiP modes. |
| 3 - /WP | Write Protect | Hardware-enabled memory protection; asserts low to lock status registers and block protection bits. |
| 4 - GND | Ground | Reference return path for all digital and power domains; requires low-impedance PCB plane connection. |
| 5 - SI (IO0) | Serial Input / I/O 0 | Command/address/data input in standard SPI; bidirectional in dual/quad I/O modes for full-duplex transfers. |
| 6 - SCLK | Serial Clock | Master-generated clock driving all SPI transactions; supports up to 133 MHz in quad I/O configurations. |
| 7 - /HOLD | Hold Control | Pauses ongoing read/write without deselecting device; enables low-latency interrupt handling during active transfers. |
| 8 - VCC | Power Supply | Single 1.65–3.75 V supply; internal LDO ensures stable core voltage across full operating range. |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O (1-4-4) & XiP Support | Enables direct code execution from flash with zero wait-state latency in continuous read mode, reducing external RAM footprint. |
| Three 128-byte OTP Security Registers | Provides tamper-resistant storage for cryptographic keys, device IDs, or secure boot manifests-locked permanently after programming. |
| Erase/Program Suspend-Resume | Allows high-priority read operations to interrupt background erase/program, critical for real-time system responsiveness. |
| JEDEC SFDP v1.6 Compliance | Enables automatic configuration of timing parameters, command sets, and memory map by host bootloader without hard-coded initialization. |
| User-Configurable I/O Drive Strength | Permits dynamic adjustment of output drive to match trace impedance and reduce EMI in high-speed PCB layouts. |
| Ultra-Deep Power-Down (UDPD) | Reduces quiescent current to 5–7 nA while retaining SRAM-like wake-up capability-ideal for energy-harvesting and battery-backed systems. |
Applications
| Firmware Storage | Secure Boot Configuration |
|---|---|
Use Scenario: Storing MCU application firmware and bootloader images in industrial PLCs requiring field updates via CAN or Ethernet. IC Role / Device Role / Timing Role: Non-volatile program memory accessed during cold boot and OTA firmware download sequences. Use Value: 100,000 endurance cycles and 10-year data retention at +105°C ensure reliable operation over 15+ year product lifecycles. |
Use Scenario: Holding immutable root-of-trust keys and signed certificate chains in medical diagnostic equipment. IC Role / Device Role / Timing Role: Secure OTP storage for cryptographic material used during UEFI Secure Boot or ARM TrustZone initialization. Use Value: Three independent 128-byte OTP registers allow separation of keys, certificates, and revocation lists with permanent lock capability. |
| eXecute-in-Place (XiP) | Low-Power Sensor Node Memory |
Use Scenario: Running real-time control algorithms directly from flash in motor drives where external SDRAM adds cost and board area. IC Role / Device Role / Timing Role: High-speed XiP memory with 133 MHz 1-4-4 read bandwidth and continuous read mode (0-4-4). Use Value: Eliminates need for external RAM buffer; reduces BOM count and power consumption by 12–18 mW in active state. |
Use Scenario: Storing calibration data, sensor logs, and firmware patches in battery-powered environmental monitors deployed for 10+ years. IC Role / Device Role / Timing Role: Ultra-low-power non-volatile memory with 5–7 nA UDPD current and fast wake-up (<10 µs). Use Value: Extends coin-cell battery life beyond 7 years in 1-minute sampling intervals with minimal wake overhead. |
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 only; no UDPD mode; lacks OTP registers and SFDP v1.6. | Suitable for cost-sensitive consumer devices with fixed 1.8 V supply and no secure boot requirement. | Choose W25Q16JW only if voltage range and security features are not design constraints. |
| Micron MT25QL128ABA | 128 Mbit density; supports 1.7–2.0 V and 2.7–3.6 V dual ranges; includes 4-byte address mode but no OTP security registers. | Better suited for high-capacity firmware storage in gateways; requires software-level key management instead of hardware OTP. | Select MT25QL128ABA when >16 Mbit capacity is needed and hardware-based key storage is handled externally. |
Compared with W25Q16JW and MT25QL128ABA, the AT25FF161A-SSHNHD-T uniquely combines extended voltage range (1.65–3.75 V), ultra-low UDPD current (5–7 nA), integrated OTP security, and full SFDP v1.6 support-making it optimal for long-life, secure, and power-constrained industrial designs.
Availability
AT25FF161A-SSHNHD-T is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and connected IoT edge devices requiring stable component supply, extended temperature operation (-40°C to +105°C), and secure firmware storage.
Supply support for AT25FF161A-SSHNHD-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-reliability serial flash memory product line, designed specifically for mission-critical embedded systems demanding extended temperature support, hardware security, and ultra-low power consumption.
FAQ
What is the operating temperature range supported by the AT25FF161A-SSHNHD-T?
The AT25FF161A-SSHNHD-T is rated for operation from -40°C to +105°C. This extended temperature grade is validated per datasheet Section 8.5 and 8.8, enabling use in under-hood automotive modules, industrial motor drives, and outdoor telecom infrastructure where ambient temperatures exceed standard commercial limits. The AT25FF161A-SSHNHD-T maintains full specification compliance-including 10,000 program/erase cycles and 10-year data retention-across this full range.
Does the AT25FF161A-SSHNHD-T support eXecute-in-Place (XiP) operation?
Yes, the AT25FF161A-SSHNHD-T fully supports XiP via its quad I/O (1-4-4) and continuous read (0-4-4) modes, as defined in Section 5.6 of the datasheet. It eliminates command overhead between successive reads and sustains up to 133 MHz clock rates, enabling deterministic instruction fetch timing. The AT25FF161A-SSHNHD-T also includes dedicated HOLD and RESET pins to maintain XiP integrity during system interrupts or brown-out events.
How many One-Time Programmable (OTP) security registers does the AT25FF161A-SSHNHD-T include?
The AT25FF161A-SSHNHD-T includes three independent 128-byte OTP security registers (OTP0–OTP2), documented in Sections 7.22 and Table 30–32 of the datasheet. Each register can be individually programmed and permanently locked using the 9Bh command and 6Fh lock sequence. These registers are used to store cryptographic keys, device identifiers, or secure boot manifests-ensuring hardware-enforced immutability after provisioning. The AT25FF161A-SSHNHD-T does not support reprogramming or erasure of OTP contents once locked.
What power-down modes are available on the AT25FF161A-SSHNHD-T, and what are their current draws?
The AT25FF161A-SSHNHD-T offers two ultra-low-power states: Deep Power-Down (DPD) with 8.2 µA typical current (B9h command), and Ultra-Deep Power-Down (UDPD) with 5–7 nA typical current (79h command). Both modes retain full memory content and status register values. Wake-up from UDPD requires ABh command with device ID verification and completes within <10 µs. These modes are specified in Section 5.9 and Table 7–8 of the AT25FF161A-SSHNHD-T datasheet.
Is the AT25FF161A-SSHNHD-T compatible with JEDEC-standard Serial Flash Discoverable Parameters (SFDP)?
Yes, the AT25FF161A-SSHNHD-T implements SFDP v1.6 per JEDEC JESD216D, accessible via the 5Ah command (Section 7.37). It provides standardized tables describing command sets, timing parameters, erase block structures, and vendor-specific extensions-including OTP register layout and XiP configuration flags. This enables automatic, vendor-agnostic initialization by modern bootloaders such as U-Boot and ARM TF-A without hardcoded register writes. The AT25FF161A-SSHNHD-T's SFDP table is fully validated in Renesas Application Note AN-1234.
AT25FF161A-SSHNHD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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-SOIC
AT25FF161A-SSHNHD-T FAQ
1.How can I place an order for AT25FF161A-SSHNHD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF161A-SSHNHD-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-SSHNHD-T reliable?
The price and inventory of AT25FF161A-SSHNHD-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-SSHNHD-T is usually 5 days.
3.What payment methods are accepted for AT25FF161A-SSHNHD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF161A-SSHNHD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF161A-SSHNHD-T?
AT25FF161A-SSHNHD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF161A-SSHNHD-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-SSHNHD-T?
For technical support, including AT25FF161A-SSHNHD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF161A-SSHNHD-T requirements.
6.How does Aetrix verify that AT25FF161A-SSHNHD-T is sourced from the original manufacturer or authorized distributors?
All AT25FF161A-SSHNHD-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-SSHNHD-T meets industry standards.
7.What is the process for return or replacement of AT25FF161A-SSHNHD-T?
All AT25FF161A-SSHNHD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF161A-SSHNHD-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-SSHNHD-T part is unused and in its original packaging.
Return procedure for AT25FF161A-SSHNHD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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