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Renesas AT45DQ161-SHFHB-T
- Part No.:
- AT45DQ161-SHFHB-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DQ161-SHFHB-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,994
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Product details
Overview
AT45DQ161-SHFHB-T from Renesas Electronics is a 16-Mbit serial DataFlash memory IC with SPI interface, Dual-I/O and Quad-I/O support, 512/528-byte configurable page size, and two independent 512/528-byte SRAM buffers. It operates from 2.3 V to 3.6 V, supports SPI modes 0 and 3, delivers up to 85 MHz clock frequency, and achieves 6 ns max clock-to-output time. It is used in embedded systems for firmware storage, voice/image buffering, and real-time data logging where concurrent read/write and low-power operation are critical.
For engineers reviewing the AT45DQ161-SHFHB-T datasheet, AT45DQ161-SHFHB-T pinout, AT45DQ161-SHFHB-T application, or AT45DQ161-SHFHB-T equivalent, key selection considerations include its RapidS™ high-speed mode, buffer-to-memory program with built-in erase, sector lockdown security, ultra-deep power-down (500 nA), and JEDEC-standard Manufacturer/Device ID read capability.
Technical Context
The AT45DQ161-SHFHB-T implements a dual-buffered Flash architecture with two independent 512/528-byte SRAM buffers enabling simultaneous data reception and main memory reprogramming. Its command set supports byte/page programming, buffer-to-main-memory transfer, auto page rewrite, and suspend/resume during program/erase operations.
It features hardware- and software-controlled sector protection, 128-byte OTP security register (64 bytes factory-unique, 64 bytes user-programmable), and configurable deep power-down modes - including Ultra-Deep Power-Down (500 nA typical) and Deep Power-Down (3 µA typical). Memory organization is 4,096 pages × 512 or 528 bytes, totaling 17,301,504 bits (16 Mbit).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 16 Mbit (17,301,504 bits), organized as 4,096 pages of 512 or 528 bytes |
| Supply voltage | 2.3 V – 3.6 V single supply - enables direct interfacing with 2.5 V/3.3 V logic without level shifters |
| Max operating frequency | 85 MHz for SPI, Dual-I/O, and Quad-I/O - supports high-throughput streaming in audio/video and firmware update applications |
| Clock-to-output time (tV) | 6 ns maximum - ensures tight timing margins for high-speed synchronous reads in real-time systems |
| Power-down current | 500 nA typical in Ultra-Deep Power-Down - extends battery life in always-on IoT edge nodes and portable devices |
| Endurance & retention | 100,000 program/erase cycles per page; 20-year data retention - suitable for field-upgradable embedded firmware |
| Page size configuration | User-configurable 512-byte or 528-byte pages - allows optimization for legacy compatibility (512) or ECC overhead (528) |
Pinout & Package
AT45DQ161-SHFHB-T is packaged in an 8-pad Ultra-thin DFN (5 mm × 6 mm × 0.6 mm), RoHS-compliant, green package with wettable flanks for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command execution; must be asserted before SCK edge to initiate valid communication |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports up to 85 MHz for high-bandwidth read/write |
| MOSI | Master Out, Slave In | Serial input for commands, addresses, and data; supports single/dual/quad-input write modes |
| MISO | Master In, Slave Out | Serial output for read data and status; supports single/dual/quad-output read modes |
| WP | Write Protect | Hardware-enabled sector protection control; when low, prevents accidental program/erase of protected sectors |
| RESET | Reset Input | Active-low hardware reset; forces device into known state and exits power-down modes |
| VCC | Power Supply | 2.3–3.6 V core and I/O supply; decoupling required within 10 mm of pin for stable high-frequency operation |
| GND | Ground | Reference for all signals and power; separate analog/digital ground not required due to integrated design |
Key Features
| Feature | Design Value |
|---|---|
| RapidS™ high-speed interface | Enables 85 MHz operation with reduced setup/hold times - cuts firmware load time by >30% vs. standard SPI at same clock rate |
| Dual/Quad-I/O read/write | 4× bandwidth increase over standard SPI - supports real-time video frame buffering without external FIFO |
| Two independent SRAM buffers | Allows full overlap of buffer write and main memory page program - eliminates write latency stalls in continuous data streams |
| Program/Erase Suspend/Resume | Permits urgent read access during background erase - essential for deterministic response in safety-critical bootloaders |
| Sector lockdown + OTP security register | Permanently locks critical sectors and stores unique device ID + user keys - meets secure boot and anti-cloning requirements |
| Ultra-Deep Power-Down (500 nA) | Reduces standby power to nanoampere level - enables multi-year battery life in wireless sensor nodes and wearables |
Applications
| Firmware Storage | Audio/Video Buffering |
|---|---|
|
Use Scenario: Storing and updating boot code, application firmware, and configuration parameters in microcontroller-based edge devices. IC Role / Device Role / Timing Role: Non-volatile program memory with fast random-access read and page-atomic updates via buffer-to-memory program. Use Value: Enables field firmware upgrades without external RAM or complex wear-leveling - 100,000-cycle endurance supports >10 years of OTA updates. |
Use Scenario: Real-time capture and playback of voice prompts, audio clips, or compressed video frames in smart speakers and IP cameras. IC Role / Device Role / Timing Role: High-bandwidth sequential buffer memory supporting concurrent record/playback via dual SRAM buffers and Quad-I/O read. Use Value: 85 MHz Quad-I/O read delivers >34 MB/s throughput - sustains 1080p@30fps video streaming directly from Flash without DRAM. |
| Secure Bootloader Storage | Industrial Data Logger |
|
Use Scenario: Storing signed bootloader images and cryptographic keys in medical or industrial controllers requiring tamper resistance. IC Role / Device Role / Timing Role: Secure non-volatile storage with sector lockdown and 128-byte OTP register for immutable root-of-trust elements. Use Value: Factory-programmed 64-byte unique ID + user-programmable 64-byte key space enables device-specific authentication and secure provisioning. |
Use Scenario: Long-term environmental or machine-condition monitoring with periodic timestamped sensor readings stored locally. IC Role / Device Role / Timing Role: Low-power persistent data recorder using Deep Power-Down between samples and rapid wake-up for burst writes. Use Value: 3 µA Deep Power-Down current and 25 µA standby allow >5-year operation on a single CR2032 coin cell in 1-minute sampling intervals. |
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 SPI NOR Flash; no SRAM buffers; no Dual/Quad-I/O; supports only standard SPI (no RapidS™); 1.65–3.6 V supply | Lacks concurrent buffer operation and high-speed I/O modes - unsuitable for real-time streaming or low-latency firmware patching | Select when cost sensitivity outweighs performance needs and buffer interleaving is unnecessary |
| Macronix MX25L1633F | 16 Mbit SPI NOR Flash; supports Dual/Quad-I/O but no SRAM buffers; no RapidS™; 2.3–3.6 V supply; 100,000-cycle endurance | Missing dual SRAM buffers and suspend/resume - cannot overlap write and read operations or guarantee deterministic interrupt response | Choose for simpler designs needing Quad-I/O speed boost but no concurrent buffer management or secure lockdown |
Compared with W25Q16JW and MX25L1633F, AT45DQ161-SHFHB-T uniquely integrates dual SRAM buffers, RapidS™ timing, and hardware-enforced sector lockdown - making it the only option among the three that supports true zero-latency firmware updates and secure boot partitioning in resource-constrained embedded systems.
Availability
AT45DQ161-SHFHB-T is available at Aetrix Electronics and suitable for firmware storage, audio buffering, secure bootloader implementation, and industrial data logging requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT45DQ161-SHFHB-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 applications.
The AT45DQ161-SHFHB-T belongs to Renesas' DataFlash family, designed specifically for high-reliability embedded systems requiring concurrent read/write, ultra-low-power operation, and hardware-enforced security - not general-purpose Flash replacement.
FAQ
What is the default page size configuration for AT45DQ161-SHFHB-T?
The AT45DQ161-SHFHB-T ships pre-configured with 528-byte pages by default, optimized for ECC-capable systems. However, it can be factory-ordered with 512-byte pages or reconfigured in-system via the Buffer and Page Size Configuration command (0x3D). Both configurations are fully supported and retain identical timing and endurance specifications.
Does AT45DQ161-SHFHB-T support true Quad-SPI (QSPI) protocol with four data lines in both directions?
Yes, AT45DQ161-SHFHB-T supports Quad-output Read (0x6B opcode) and Quad-input Buffer Write (0x38 opcode), using IO0–IO3 bidirectionally. It complies with JEDEC JESD216 Annex A for Quad-I/O operation, but does not implement the QSPI command set (e.g., 0xEB fast read) - it uses proprietary DataFlash opcodes instead.
How does the Program/Erase Suspend feature work in AT45DQ161-SHFHB-T?
AT45DQ161-SHFHB-T allows issuing a Suspend command (0x75) during active page program or block erase. This halts the operation and enables immediate status register read or low-priority read commands. Resume (0x7A) restores the suspended operation. Suspend is not permitted during chip erase or sector lockdown programming.
Can AT45DQ161-SHFHB-T be used as EEPROM emulation with byte-level writes?
No - AT45DQ161-SHFHB-T does not support true byte-level writes. It requires page-level (512/528-byte) programming. However, E2PROM emulation is achievable in firmware using a three-step process: read-modify-write of a page via SRAM buffer, then buffer-to-main-memory program with built-in erase. This is self-contained but incurs page-erase latency.
What is the purpose of the 128-byte Security Register in AT45DQ161-SHFHB-T?
The 128-byte Security Register contains 64 bytes factory-programmed with a unique device identifier and 64 bytes user-programmable for keys, certificates, or calibration data. Once locked via Sector Lockdown, it becomes permanently read-only - providing hardware-rooted identity and secure storage for cryptographic assets in AT45DQ161-SHFHB-T implementations.
AT45DQ161-SHFHB-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm 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:
- 512 Bytes x 4096 pages
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 6ms
- Access Time:
- -
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT45DQ161-SHFHB-T FAQ
1.How can I place an order for AT45DQ161-SHFHB-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-SHFHB-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 AT45DQ161-SHFHB-T reliable?
The price and inventory of AT45DQ161-SHFHB-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DQ161-SHFHB-T is usually 5 days.
3.What payment methods are accepted for AT45DQ161-SHFHB-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-SHFHB-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-SHFHB-T?
AT45DQ161-SHFHB-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-SHFHB-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 AT45DQ161-SHFHB-T?
For technical support, including AT45DQ161-SHFHB-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-SHFHB-T requirements.
6.How does Aetrix verify that AT45DQ161-SHFHB-T is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-SHFHB-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 AT45DQ161-SHFHB-T meets industry standards.
7.What is the process for return or replacement of AT45DQ161-SHFHB-T?
All AT45DQ161-SHFHB-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-SHFHB-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 AT45DQ161-SHFHB-T part is unused and in its original packaging.
Return procedure for AT45DQ161-SHFHB-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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