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Renesas AT25XE161D-SSHN-T
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- Part No.:
- AT25XE161D-SSHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25XE161D-SSHN-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,635
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Product details
Overview
AT25XE161D from Renesas Electronics is a 16-Mbit SPI serial flash memory IC supporting quad I/O, XiP (eXecute-in-Place), and flexible erase architecture (256-byte page to 64-kByte block). It operates from 1.65 V to 3.6 V, delivers up to 133 MHz read speed in 1-4-4 mode, and features active status interrupt, RMW command for SRAM-like writes, and ultra-low 7 nA deep power-down current. It is used in embedded boot code storage, firmware updates, and data logging in battery-powered IoT edge nodes.
For engineers reviewing the AT25XE161D datasheet, AT25XE161D pinout, AT25XE161D application, or AT25XE161D equivalent, key selection criteria include multi-I/O timing compatibility (1-1-2/1-1-4/1-4-4/0-4-4), endurance (100,000 cycles), data retention (20 years), OTP security register support, and JEDEC SFDP compliance for automatic configuration.
Technical Context
The AT25XE161D implements a dual-bus interface architecture with dedicated 256-byte SRAM buffer and configurable I/O unit enabling simultaneous command/address/data transfers across SPI, dual-output, quad-output, quad-I/O, and XiP modes. Its memory array is partitioned into uniform 4-kByte blocks with hierarchical protection (individual block lock, global lock, start/end user-definable area).
It supports nested program/erase suspend-resume operations, hardware reset via HOLD/RESET pin or JEDEC standard command, and low-power state management through Deep Power-Down (B9h) and Ultra-Deep Power-Down (79h) commands with sub-µA quiescent current. Status registers (SR1–SR6) provide non-volatile/volatile control of write enable, protection, and device readiness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (2 MB) organized as 2,097,152 bytes; enables compact firmware storage without external expansion. |
| Supply Voltage Range | 1.65 V – 3.6 V; supports direct integration with 1.8 V, 2.5 V, and 3.3 V logic domains and battery-backed systems. |
| Max Clock Frequency | 133 MHz in 1-4-4 quad I/O mode; achieves >50 MB/s effective read throughput for real-time XiP execution. |
| Erase Granularity | 256-byte page, 4/32/64-kByte blocks, full chip; allows precise overwriting of configuration or log data without bulk erasure. |
| Power Consumption | 7 nA UDPD current; extends shelf life and runtime in always-on sensor nodes and energy-harvesting devices. |
| Endurance & Retention | 100,000 program/erase cycles and 20-year data retention at +85 °C; meets industrial lifecycle requirements. |
| Security Features | 3 × 128-byte OTP registers + 1 × 128-byte factory UID; enables secure key binding and device identity provisioning. |
Pinout & Package
AT25XE161D-SSHN-T uses an 8-lead SOIC (150-mil) package with industry-standard pinout and RoHS-compliant green finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command initiation; must be asserted before SCK edge to avoid bus contention. |
| SCK | Serial Clock | Master-generated clock synchronizing all SPI transfers; supports up to 133 MHz in quad I/O mode. |
| SI (I/O0) | Serial Input / Quad I/O Lane 0 | Primary data input during standard SPI; functions as bidirectional lane 0 in quad I/O and XiP modes. |
| SO (I/O1) | Serial Output / Quad I/O Lane 1 | Primary data output during standard SPI; functions as bidirectional lane 1 in quad I/O and XiP modes. |
| WP (I/O2) | Write Protect / Quad I/O Lane 2 | Hardware write protection when held low; serves as bidirectional lane 2 in quad I/O and XiP modes. |
| HOLD/RESET (I/O3) | Hold Input or Hardware Reset | Pauses ongoing transfer when asserted low; triggers JEDEC-compliant hardware reset when pulsed per spec. |
| VCC | Power Supply | 1.65–3.6 V core supply; decoupling capacitor required per datasheet layout guidelines. |
| GND | Ground | Reference return path for all I/O and internal circuitry; requires low-impedance PCB connection. |
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 fetch in microcontroller boot loaders. |
| Read-Modify-Write (RMW) | Single-command emulation of SRAM write behavior - avoids full-page read-erase-program cycle for byte-level updates in configuration tables. |
| Active Status Interrupt | Automatically asserts host interrupt upon RDY/BSY bit clear, eliminating polling and reducing CPU wake time in low-power applications. |
| Erase/Program Suspend | Allows background erase or program to pause and resume, enabling high-priority host access to memory during long operations. |
| User-Configurable Drive Strength | Adjusts I/O pin output drive levels to match trace impedance and reduce EMI in high-speed layouts without external termination. |
| SFDP Compliance | Provides standardized, self-describing parameter table accessible via 5Ah command, enabling automatic driver initialization across platforms. |
Applications
| Firmware Boot Storage | IoT Edge Node Data Logging |
|---|---|
Use Scenario: Microcontroller boots from external flash by executing initial bootloader and application code directly from AT25XE161D using XiP mode. IC Role / Device Role / Timing Role: Non-volatile program memory with deterministic read latency and 133 MHz quad I/O bandwidth. Use Value: Eliminates RAM copy step, reduces boot time by >40% versus standard SPI read, and lowers system BOM cost. |
Use Scenario: Battery-powered environmental sensor records timestamped temperature/humidity readings every 5 minutes into flash-resident circular buffer. IC Role / Device Role / Timing Role: Low-power, byte-addressable update target supporting 256-byte page erase for efficient overwrite. Use Value: Achieves 10+ year field life on coin cell using 7 nA UDPD current and 100K-cycle endurance. |
| Secure Firmware Update | Industrial HMI Configuration Storage |
Use Scenario: OTA firmware update validates signature in OTP security registers before writing new image to main array. IC Role / Device Role / Timing Role: Trusted root-of-trust anchor with write-protected 3×128-byte OTP and factory UID. Use Value: Prevents unauthorized firmware injection; enables cryptographic key binding to unique device identity. |
Use Scenario: Human-machine interface panel stores display calibration parameters, language packs, and user preferences in protected flash sectors. IC Role / Device Role / Timing Role: User-definable block protection at memory start/end with individual block lock granularity. Use Value: Guarantees critical settings survive accidental erase or malware corruption during field updates. |
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 W25Q16JVSNIQ | 16 Mbit, 1.7–2.0 V min, no XiP mode, no RMW command, 104 MHz max clock, 100K cycles. | Lacks execute-in-place and SRAM-emulation capability; suitable only for basic code storage without real-time execution. | Select when XiP and RMW are not required and 1.7 V minimum supply suffices. |
| Micron MT25QL128ABA8ESF-0SIT | 128 Mbit, 2.7–3.6 V, supports XiP and SFDP, but no 256-byte page erase; smallest erase unit is 4 kByte. | Higher density but coarser erase granularity limits suitability for frequent small-data updates like logs or counters. | Select when larger capacity is needed and data update patterns align with 4-kByte block boundaries. |
Compared with W25Q16JVSNIQ and MT25QL128ABA8ESF-0SIT, the AT25XE161D uniquely combines 256-byte page erase, RMW command, and 1.65 V operation - making it optimal for resource-constrained, battery-powered systems requiring both code execution and frequent small-data writes.
Availability
AT25XE161D-SSHN-T is available at Aetrix Electronics and suitable for firmware boot storage, IoT edge node data logging, and secure firmware update applications requiring stable component supply across automotive-grade temperature ranges and long product lifecycles.
Supply support for AT25XE161D-SSHN-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and IoT markets.
The AT25XE161D belongs to Renesas' AT25XE family of low-voltage, multi-I/O serial flash memories designed specifically for energy-efficient embedded systems requiring fast XiP, secure storage, and robust data logging capabilities.
FAQ
What is the minimum operating voltage for the AT25XE161D-SSHN-T?
The AT25XE161D-SSHN-T operates down to 1.65 V across its full industrial temperature range (-40 °C to +85 °C), enabling direct use with single-cell Li-ion, LiFePO₄, or alkaline battery systems without voltage regulation overhead. This specification is verified per DC Characteristics Table 7.3 in the official Renesas datasheet DS-AT25XE161D-158 Rev. M.
Does the AT25XE161D-SSHN-T support execute-in-place (XiP) functionality?
Yes, the AT25XE161D-SSHN-T fully supports eXecute-in-Place (XiP) via 1-4-4 and 0-4-4 quad I/O modes, allowing microcontrollers to fetch instructions directly from flash without copying to RAM. The device includes continuous read mode (0-4-4) that omits command opcodes after initial setup, reducing latency and improving deterministic timing for real-time applications.
How does the Read-Modify-Write (RMW) command in the AT25XE161D-SSHN-T improve system efficiency?
The RMW command (0Ah) in the AT25XE161D-SSHN-T performs atomic byte-level updates in a single operation, emulating SRAM write behavior. This eliminates the need for separate read-erase-program sequences when modifying small configuration fields or counters, reducing write latency by up to 70% and extending flash endurance by minimizing unnecessary block erasures.
What security features does the AT25XE161D-SSHN-T provide for firmware integrity?
The AT25XE161D-SSHN-T provides three 128-byte One-Time Programmable (OTP) security registers and a factory-programmed 128-byte unique identifier. These enable cryptographic key binding, secure boot signature verification, and device-specific credential storage. OTP registers can be permanently locked via command 9Bh, preventing post-production tampering.
Can the AT25XE161D-SSHN-T enter ultra-low-power states during system sleep?
Yes, the AT25XE161D-SSHN-T supports Ultra Deep Power-Down (UDPD) mode with only 7 nA typical current draw, activated via command 79h. It exits UDPD within 35 µs upon CS assertion, enabling rapid wake-and-read response in duty-cycled sensor nodes. This mode is qualified across the full -40 °C to +85 °C operating range.
AT25XE161D-SSHN-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
- Memory Size:
- 16Mbit
- Memory Organization:
- 2M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 20µs, 12ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25XE161D-SSHN-T FAQ
1.How can I place an order for AT25XE161D-SSHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XE161D-SSHN-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 AT25XE161D-SSHN-T reliable?
The price and inventory of AT25XE161D-SSHN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25XE161D-SSHN-T is usually 5 days.
3.What payment methods are accepted for AT25XE161D-SSHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XE161D-SSHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XE161D-SSHN-T?
AT25XE161D-SSHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XE161D-SSHN-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 AT25XE161D-SSHN-T?
For technical support, including AT25XE161D-SSHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XE161D-SSHN-T requirements.
6.How does Aetrix verify that AT25XE161D-SSHN-T is sourced from the original manufacturer or authorized distributors?
All AT25XE161D-SSHN-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 AT25XE161D-SSHN-T meets industry standards.
7.What is the process for return or replacement of AT25XE161D-SSHN-T?
All AT25XE161D-SSHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25XE161D-SSHN-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 AT25XE161D-SSHN-T part is unused and in its original packaging.
Return procedure for AT25XE161D-SSHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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