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Renesas AT25FF161A-SSHL-T
- Part No.:
- AT25FF161A-SSHL-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25FF161A-SSHL-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:14,580
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Product details
Overview
AT25FF161A-SSHL-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 - deployed in embedded boot code storage and firmware update applications.
For engineers reviewing the AT25FF161A-SSHL-T datasheet, AT25FF161A-SSHL-T pinout, AT25FF161A-SSHL-T application, or AT25FF161A-SSHL-T equivalent, this page provides verified technical context, package mapping, SPI command compatibility (modes 0/3, 1-1-2/1-1-4/1-4-4/0-4-4), JEDEC SFDP compliance, and real-world endurance/data retention specs across -40°C to +105°C.
Technical Context
The AT25FF161A-SSHL-T implements a flexible SPI interface with hardware reset support, dual/quad output and quad I/O transfer modes, and XiP-capable continuous read (0-4-4) eliminating opcode overhead per burst. Its architecture includes five status registers (SR1–SR5), non-volatile/volatile configuration options, and nested erase/program suspend/resume capability.
Memory protection is enforced via individual block lock/unlock commands (36h/39h), global lock (7Eh), and user-definable protected regions at memory start/end. OTP security registers (3 × 128-byte) and factory-unique 128-byte ID provide secure firmware identity and key storage for trusted boot implementations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (2 MB) - sufficient for full MCU boot image + firmware + configuration data in space-constrained designs. |
| Supply Voltage Range | 1.65 V to 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 in 1-4-4 mode - achieves ~66.5 MB/s effective read bandwidth for fast XiP execution or bulk data loading. |
| Erase Granularity | 4-kB / 32-kB / 64-kB blocks + full chip - supports fine-grained firmware patching and large-scale field updates. |
| 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 | 10 years at -40°C to +105°C - validated for automotive under-hood and industrial control environments. |
| Endurance | 100,000 program/erase cycles (at -40°C to +85°C); 10,000 cycles at -40°C to +105°C - ensures reliability over product lifetime in frequent OTA update scenarios. |
Pinout & Package
AT25FF161A-SSHL-T is supplied in an 8-lead, 150-mil narrow SOIC package (JEDEC MS-012AA), with gull-wing leads and standard 1.27 mm pitch. Pin 1 marked by notch or dot; pin 8 is VCC, pin 4 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CS#) | Chip Select | Active-low enable for SPI command/address/data transfers; must be deasserted between operations to avoid bus contention. |
| 2 (DO / IO0) | Data Output / I/O 0 | Primary serial data output in standard/dual mode; bidirectional I/O0 in quad I/O/XiP modes; supports drive strength configuration. |
| 3 (WP#) | Write Protect | Hardware-enabled memory protection; low = write/erase disabled for all or user-defined protected sectors. |
| 4 (GND) | Ground | Reference return path for all digital and analog circuitry; requires low-impedance PCB connection to minimize noise coupling. |
| 5 (DI / IO1) | Data Input / I/O 1 | Serial data input in standard mode; bidirectional I/O1 in dual/quad I/O modes; used for address/data in 1-1-2/1-1-4/1-4-4 transfers. |
| 6 (CLK) | Clock Input | Master-controlled SPI clock; supports modes 0 and 3 (CPOL=0/1, CPHA=0); timing critical for 133 MHz operation. |
| 7 (HOLD# / RESET#) | Hold / Reset | Active-low pin: HOLD# pauses ongoing transfers; RESET# performs JEDEC-standard hardware reset (requires ≥20 µs pulse). |
| 8 (VCC) | Power Supply | Core and I/O supply (1.65–3.75 V); decoupling capacitor (≥100 nF) required within 5 mm of pin for stable high-frequency operation. |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O & XiP Support (1-4-4 / 0-4-4) | Enables zero-overhead continuous instruction fetch directly from flash, reducing external RAM dependency and boot latency. |
| Erase/Program Suspend & Resume | Allows background firmware update while servicing real-time interrupts - critical for deterministic response in motor control or safety systems. |
| Three 128-byte OTP Security Registers | Provides immutable storage for cryptographic keys, device certificates, or anti-cloning identifiers - locked permanently after programming. |
| User-Configurable I/O Drive Strength | Permits optimization of signal integrity and EMI across varying trace lengths and load capacitances without external termination. |
| SFDP (Serial Flash Discoverable Parameters) | Enables automatic host driver configuration of timing, command sets, and memory map - simplifies BSP porting across flash vendors. |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
Use Scenario: Storing and executing boot loader and real-time control firmware in programmable logic controllers operating continuously at 85°C ambient. IC Role / Device Role / Timing Role: Primary non-volatile program memory with XiP capability and 10-year data retention at elevated temperature. Use Value: Eliminates need for external RAM copy step, reduces BOM count, and ensures deterministic startup timing under thermal stress. |
Use Scenario: Holding camera sensor calibration data and low-level boot code for vision processing units in advanced driver-assistance systems. IC Role / Device Role / Timing Role: Secure, high-reliability flash storage with OTP registers for cryptographic keys and JEDEC reset compliance. Use Value: Meets AEC-Q100 Grade 2 (-40°C to +105°C) requirements and supports secure boot chain validation. |
| IoT Edge Node OTA Storage | Medical Diagnostic Device Configuration |
Use Scenario: Hosting firmware images and delta patches for wireless over-the-air updates in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Low-power serial flash with 5–7 nA UDPD current and 4-kB erase granularity for efficient partial updates. Use Value: Extends multi-year battery life while enabling field-upgradable functionality without hardware intervention. |
Use Scenario: Storing FDA-compliant calibration coefficients, device serial numbers, and usage logs in portable ultrasound and ECG equipment. IC Role / Device Role / Timing Role: High-integrity, long-retention memory with factory-programmed unique ID and block-level write protection. Use Value: Supports audit trail requirements and prevents accidental overwrite of regulatory-critical parameters. |
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 (<1 µA DPD only); lacks OTP registers and SFDP v1.6+ support. | Targeted at cost-sensitive consumer devices where ultra-low power and secure key storage are not required. | Select when operating strictly at 1.8 V and design does not require XiP, OTP, or deep power-down below 1 µA. |
| Micron MT25QL128ABA | 128 Mbit density; supports 1.7–2.0 V and 2.7–3.6 V dual ranges; includes hardware ECC but no factory UID or OTP security registers. | Used in high-bandwidth applications needing larger code storage, such as Linux-based gateways or video streaming endpoints. | Choose for higher capacity and ECC robustness, but verify host driver compatibility with different SFDP layout and command set extensions. |
Compared with Winbond W25Q16JW and Micron MT25QL128ABA, the AT25FF161A-SSHL-T uniquely combines ultra-low UDPD current (5–7 nA), factory-unique ID, three OTP registers, and full SFDP v1.6 compliance - making it optimal for secure, battery-constrained, and thermally demanding embedded deployments.
Availability
AT25FF161A-SSHL-T is available at Aetrix Electronics and suitable for industrial control, automotive ADAS, and medical diagnostics requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.
Supply support for AT25FF161A-SSHL-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 infrastructure markets.
The AT25FF161A belongs to Renesas' high-performance serial flash product line, engineered for robust operation in extended temperature ranges, secure firmware storage, and ultra-low-power connectivity applications.
FAQ
What is the maximum SPI clock frequency supported by the AT25FF161A-SSHL-T?
The AT25FF161A-SSHL-T supports up to 133 MHz in quad I/O (1-4-4) mode at 1.65–3.75 V and -40°C to +85°C. At +105°C, max frequency drops to 108 MHz in standard (1-1-1) mode per datasheet Section 8.6–8.8. This enables high-throughput XiP execution and rapid firmware loading in performance-critical systems.
Does the AT25FF161A-SSHL-T support Execute-in-Place (XiP) operation?
Yes, the AT25FF161A-SSHL-T fully supports XiP via its 0-4-4 and 1-4-4 command formats, allowing continuous instruction fetch without repeated opcode transmission. The device includes burst wrap capability (77h) and optimized read latency to sustain deterministic execution flow directly from flash memory.
What power-saving modes does the AT25FF161A-SSHL-T offer?
The AT25FF161A-SSHL-T offers three low-power states: Standby (30 µA typical), Deep Power-Down (8.2 µA typical), and Ultra-Deep Power-Down (5–7 nA typical). UDPD mode is entered via 79h command and exited using ABh with device ID - ideal for multi-year battery operation in remote sensors.
How is memory protection implemented on the AT25FF161A-SSHL-T?
Memory protection on the AT25FF161A-SSHL-T includes hardware WP# pin control, individual block lock/unlock (36h/39h), global lock/unlock (7Eh/98h), and user-definable protected regions at memory start/end. Status Register bits (BP0–BP3, CMPRT, WPS) configure granularity and default behavior at power-up.
Is the AT25FF161A-SSHL-T compatible with JEDEC-standard hardware reset?
Yes, the AT25FF161A-SSHL-T implements JEDEC-standard hardware reset via the HOLD#/RESET# pin (Pin 7). A low pulse ≥20 µs resets internal state, clears status registers, and returns the device to standby mode - independent of SPI activity and compliant with JESD22-A102.
AT25FF161A-SSHL-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:
- 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 ~ 3.75V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25FF161A-SSHL-T FAQ
1.How can I place an order for AT25FF161A-SSHL-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF161A-SSHL-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-SSHL-T reliable?
The price and inventory of AT25FF161A-SSHL-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-SSHL-T is usually 5 days.
3.What payment methods are accepted for AT25FF161A-SSHL-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF161A-SSHL-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF161A-SSHL-T?
AT25FF161A-SSHL-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF161A-SSHL-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-SSHL-T?
For technical support, including AT25FF161A-SSHL-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF161A-SSHL-T requirements.
6.How does Aetrix verify that AT25FF161A-SSHL-T is sourced from the original manufacturer or authorized distributors?
All AT25FF161A-SSHL-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-SSHL-T meets industry standards.
7.What is the process for return or replacement of AT25FF161A-SSHL-T?
All AT25FF161A-SSHL-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF161A-SSHL-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-SSHL-T part is unused and in its original packaging.
Return procedure for AT25FF161A-SSHL-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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