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Renesas AT25SF161-MHD-T
- Part No.:
- AT25SF161-MHD-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT25SF161-MHD-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,672
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Product details
Overview
AT25SF161-MHD-T from Renesas Electronics is a 16-Mbit SPI serial flash memory IC supporting dual I/O and quad I/O operations, with 108 MHz max clock frequency, 2.7–3.6 V supply, and execute-in-place (XiP) capability for embedded boot and code storage applications.
For engineers reviewing the AT25SF161-MHD-T datasheet, AT25SF161-MHD-T pinout, AT25SF161-MHD-T application, or AT25SF161-MHD-T equivalent, key selection criteria include quad-SPI timing compliance (1-4-4/0-4-4), 4 kB/32 kB/64 kB erase granularity, OTP security registers, SFDP support, and industrial temperature range (-40°C to +85°C).
Technical Context
The AT25SF161-MHD-T implements a flexible SPI interface compliant with modes 0 and 3, enabling fast read via multiple protocols: standard single-I/O (03h/0Bh), dual-output (3Bh), dual-I/O (BBh), quad-output (6Bh), and quad-I/O (EBh/E7h). It supports continuous read with wrap-around addressing and XiP-optimized command sequences.
Internally, it features a 4 Mbit physical block architecture with hierarchical erase (4 kB, 32 kB, 64 kB, full chip), page-programmable 1–256 byte writes, and status register-controlled protection including WP pin-based locking and non-volatile security register configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (2 MB) organized as 2,097,152 bytes; enables firmware image storage for mid-size microcontrollers. |
| Max Clock Frequency | 108 MHz in quad-I/O mode; delivers up to 54 MB/s effective throughput for XiP or high-speed data fetch. |
| Erase Time (4 kB block) | 50 ms typical; allows rapid field firmware updates without long blocking delays. |
| Page Program Time | 0.4 ms typical for 1–256 bytes; supports efficient incremental configuration or log writing. |
| Endurance & Retention | 100,000 program/erase cycles and 20-year data retention; suitable for industrial logging and infrequent update use cases. |
| Power Consumption | 15 µA standby / 1.5 µA deep power-down; enables ultra-low-power sleep modes in battery-backed systems. |
| Operating Temperature | -40°C to +85°C; qualified for industrial and automotive under-hood environments. |
Pinout & Package
AT25SF161-MHD-T uses an 8-lead SOIC (0.208" wide, EIAJ standard) package with gull-wing leads and surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must transition low-to-high to complete any operation; requires external 10 kΩ pull-up for reliable power-up sequencing. |
| SCK | Serial Clock | Master-generated clock; rising edge latches input (SI), falling edge clocks output (SO); defines timing for all SPI commands. |
| SI (I/O0) | Serial Input / Quad I/O 0 | Primary command/address/data input; becomes bidirectional I/O0 during dual/quad read operations. |
| SO (I/O1) | Serial Output / Quad I/O 1 | Data output in single/dual mode; becomes bidirectional I/O1 in quad-I/O mode; high-impedance when CS is high. |
| WP (I/O2) | Write Protect / Quad I/O 2 | Configurable: hardware write lock for status registers (when QE=0) or quad I/O line (when QE=1); internally pulled high. |
| HOLD (I/O3) | Hold / Quad I/O 3 | Pauses ongoing SPI transfer without resetting state (when QE=0); serves as I/O3 in quad mode (QE=1); internally pulled high. |
| VCC | Power Supply | 2.7–3.6 V nominal; powers internal logic, charge pump, and I/O buffers; decoupling capacitor required per layout guidelines. |
| GND | Ground Reference | System ground return path; must be low-impedance and co-located with VCC decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-I/O & XiP Support | Enables 0-4-4 continuous read mode eliminating opcode overhead, reducing latency for real-time code execution directly from flash. |
| Flexible Erase Architecture | Four-level granularity (4 kB/32 kB/64 kB/full chip) allows independent firmware partitioning and selective field updates without erasing entire application. |
| 3 × 256-byte OTP Security Registers | Provides immutable storage for keys, certificates, or device-specific identifiers; supports secure boot chain integrity verification. |
| Serial Flash Discoverable Parameters (SFDP) | Standardized JEDEC register enables automatic host configuration of timing, voltage, and command sets-reducing driver porting effort. |
| Erase/Program Suspend & Resume | Allows interruption of long background operations (e.g., 200 ms 64 kB erase) to service time-critical reads or writes, then resume seamlessly. |
Applications
| Industrial PLC Firmware Storage | Automotive Infotainment Boot Memory |
|---|---|
|
Use Scenario: Storing and executing boot loader and application firmware in programmable logic controllers with field-upgrade requirements. IC Role / Device Role / Timing Role: Primary non-volatile code storage with XiP support and robust erase/write endurance for repeated firmware revisions. Use Value: 108 MHz quad-I/O read speed ensures sub-millisecond instruction fetch latency; 4 kB erase blocks allow patch-level updates without full reflash downtime. |
Use Scenario: Hosting boot code and UI assets for head-unit systems requiring fast startup and secure firmware validation. IC Role / Device Role / Timing Role: Secure, high-throughput flash memory interfaced to ARM Cortex-A application processors via QSPI controller. Use Value: OTP security registers store cryptographic keys for secure boot; -40°C to +85°C rating guarantees operation across vehicle cabin temperature extremes. |
| Medical Device Configuration Storage | IoT Edge Node OTA Update Storage |
|
Use Scenario: Retaining calibrated sensor parameters, user preferences, and regulatory-compliant audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Non-volatile parameter and log storage with guaranteed 20-year data retention and 100k-cycle endurance. Use Value: Deep power-down current of 1.5 µA extends battery life in standby; SFDP register simplifies host driver compatibility across product generations. |
Use Scenario: Staging and verifying over-the-air firmware images in constrained wireless sensor nodes before atomic activation. IC Role / Device Role / Timing Role: Dual-bank capable flash used for A/B firmware partitioning and safe rollback on failed update. Use Value: Erase suspend/resume enables concurrent OTA download and real-time sensor polling; 32 kB block erase aligns with typical OTA chunk size. |
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-QI | 16 Mbit, 133 MHz max, 1.65–3.6 V supply, same SOIC-8 package; lacks OTP registers and SFDP v1.6+ support. | Lower voltage flexibility suits battery-powered designs; missing OTP limits secure boot implementation. | Select when ultra-low VCC operation is required and security features are handled externally. |
| Micron MT25QL128ABA8ESF-0SIT | 128 Mbit density, 133 MHz, 2.7–3.6 V, SOIC-8; includes enhanced security (AES-256, secure OTP), but larger capacity increases cost and layout footprint. | Higher density supports complex firmware stacks; AES encryption adds layer not present in AT25SF161-MHD-T. | Select when future-proofing for larger firmware or mandatory hardware encryption is specified. |
Compared with W25Q16JW-QI and MT25QL128ABA8ESF-0SIT, the AT25SF161-MHD-T offers optimal balance of XiP-optimized quad-I/O performance, industrial temperature reliability, and integrated security registers-without over-provisioning capacity or voltage range beyond typical embedded MCU interfaces.
Availability
AT25SF161-MHD-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive infotainment boot memory, and medical device configuration storage requiring stable component supply and long-term lifecycle assurance.
Supply support for AT25SF161-MHD-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 delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT markets.
The AT25SF161-MHD-T belongs to Renesas' AT25SF family of SPI flash devices engineered for high-reliability embedded code storage and execute-in-place operation in resource-constrained systems.
FAQ
What is the maximum operating frequency supported by the AT25SF161-MHD-T?
The AT25SF161-MHD-T supports a maximum clock frequency of 108 MHz in quad-I/O read mode (1-4-4 and 0-4-4 command formats). This enables sustained data throughput up to 54 MB/s, making it suitable for high-performance execute-in-place (XiP) applications where low-latency instruction fetch is critical. The device maintains full functionality across its specified 2.7–3.6 V supply range at this speed.
Does the AT25SF161-MHD-T support execute-in-place (XiP) operation?
Yes, the AT25SF161-MHD-T explicitly supports execute-in-place (XiP) through optimized features including quad-I/O read (1-4-4/0-4-4), continuous read mode that eliminates repeated command opcodes, and 108 MHz clock capability. These reduce instruction fetch latency and eliminate the need to copy code to RAM before execution-ideal for space-constrained microcontroller systems relying on external flash for boot and runtime code.
How many one-time programmable (OTP) security registers does the AT25SF161-MHD-T include?
The AT25SF161-MHD-T includes three 256-byte one-time programmable (OTP) security registers. These registers are used to store immutable data such as cryptographic keys, device identifiers, or calibration constants. Once programmed, their contents cannot be altered, providing hardware-enforced security for secure boot, anti-counterfeiting, and trusted firmware validation workflows.
What package type is used for the AT25SF161-MHD-T?
The AT25SF161-MHD-T uses an 8-lead, 0.208" wide EIAJ SOIC package (also referenced as "wide SOIC"). This surface-mount package has gull-wing leads, standard JEDEC footprint compatibility, and is RoHS-compliant with Pb/Halide-free construction. It is distinct from the narrow 0.150" SOIC variant and supports industrial thermal cycling requirements.
Does the AT25SF161-MHD-T support Serial Flash Discoverable Parameters (SFDP)?
Yes, the AT25SF161-MHD-T implements JEDEC-standard Serial Flash Discoverable Parameters (SFDP) via the 5Ah command. This register provides host systems with standardized, versioned metadata-including timing parameters, voltage ranges, command sets, and feature flags-enabling automatic driver configuration and reducing platform bring-up time across different flash vendors and densities.
AT25SF161-MHD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 104 MHz
- Write Cycle Time - Word, Page:
- 5µs, 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (5x6)
AT25SF161-MHD-T FAQ
1.How can I place an order for AT25SF161-MHD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25SF161-MHD-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 AT25SF161-MHD-T reliable?
The price and inventory of AT25SF161-MHD-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25SF161-MHD-T is usually 5 days.
3.What payment methods are accepted for AT25SF161-MHD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25SF161-MHD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25SF161-MHD-T?
AT25SF161-MHD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25SF161-MHD-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 AT25SF161-MHD-T?
For technical support, including AT25SF161-MHD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25SF161-MHD-T requirements.
6.How does Aetrix verify that AT25SF161-MHD-T is sourced from the original manufacturer or authorized distributors?
All AT25SF161-MHD-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 AT25SF161-MHD-T meets industry standards.
7.What is the process for return or replacement of AT25SF161-MHD-T?
All AT25SF161-MHD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25SF161-MHD-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 AT25SF161-MHD-T part is unused and in its original packaging.
Return procedure for AT25SF161-MHD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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