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Renesas AT45DQ161-MHF-Y
- Part No.:
- AT45DQ161-MHF-Y
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT45DQ161-MHF-Y.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,506
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Product details
Overview
AT45DQ161-MHF-Y from Renesas Electronics is a 16-Mbit serial Flash memory with SPI interface, Dual-I/O and Quad-I/O support, 85 MHz max clock frequency, 512/528-byte configurable page size, and two independent 512/528-byte SRAM buffers. It enables concurrent data reception and main memory reprogramming in embedded voice, image, and firmware storage systems.
For engineers reviewing the AT45DQ161-MHF-Y datasheet, AT45DQ161-MHF-Y pinout, AT45DQ161-MHF-Y application, or AT45DQ161-MHF-Y equivalent, key selection criteria include SPI mode 0/3 compatibility, RapidS™ operation, ultra-low deep power-down current (500 nA), sector lockdown capability, and OTP security register configuration.
Technical Context
The AT45DQ161-MHF-Y implements a dual-buffered sequential-access Flash architecture with dedicated SRAM buffers that operate independently of main memory programming cycles. Its RapidS™ mode supports high-speed command execution with reduced latency for continuous read/write streaming.
It supports four distinct I/O modes: standard SPI (single I/O), Dual-I/O (two data lines), Quad-I/O (four data lines), and legacy continuous array read - all selectable via opcode and configuration register. Page erase (512/528 B), block erase (4 kB), sector erase (128 kB), and chip erase (16 Mbit) are hardware-supported with suspend/resume capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 16 Mbit (2,097,152 bytes), organized as 4,096 pages × 512 or 528 bytes |
| Interface speed | Up to 85 MHz for SPI, Dual-I/O, and Quad-I/O modes - enables >34 MB/s effective throughput in Quad-I/O |
| Page size | User-configurable: 512 bytes (binary-aligned) or 528 bytes (DataFlash-compatible default); factory pre-set per order |
| Power consumption | 500 nA ultra-deep power-down (typical); 25 µA standby; 11 mA active read at 20 MHz |
| Endurance & retention | 100,000 program/erase cycles per page minimum; 20-year data retention |
| Security features | 128-byte OTP security register (64-byte factory UID + 64-byte user-programmable); sector lockdown for permanent read-only protection |
| Operating voltage | 2.3 V to 3.6 V single supply - compatible with 2.5 V and 3.3 V logic domains without level shifting |
Pinout & Package
AT45DQ161-MHF-Y is packaged in an 8-pad Ultra-thin DFN (5 mm × 6 mm × 0.6 mm) with wettable flank leads, RoHS-compliant and halide-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command decoding; must be asserted before SCK edge for valid operation |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports up to 85 MHz; phase/polarity configurable for Mode 0/3 |
| MOSI | Master Out Slave In | Serial data input for commands, addresses, and write data; used in single/Dual/Quad-I/O modes depending on instruction |
| MISO | Master In Slave Out | Serial data output for read operations; functions as IO0 in Dual/Quad-I/O modes |
| IO2 | Input/Output 2 | Second bidirectional data line in Dual-I/O (read/write) and Quad-I/O (read only) modes |
| IO3 | Input/Output 3 | Third/fourth bidirectional data line in Quad-I/O mode (read/write for IO2/IO3 during Quad-Input Buffer Write) |
| WP | Write Protect | Hardware-enabled sector protection control; low = enable protection per Sector Protection Register settings |
| RESET | Reset Input | Active-low hardware reset; initiates internal state machine recovery and clears status flags |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers (512/528 B each) | Enables true overlap: receive new data into one buffer while programming the other buffer's content to Flash - eliminates write stalls in streaming applications |
| RapidS™ operation | Reduces command overhead and timing constraints vs. standard SPI; supports high-frequency continuous reads with minimal latency (tV ≤ 6 ns) |
| Configurable page size | Factory-set choice between 512-byte (binary-aligned) or 528-byte (legacy DataFlash) page format - avoids software translation layer in migration paths |
| Program/Erase suspend/resume | Allows interrupting long erase or program operations to service time-critical reads or writes - critical for real-time firmware update scenarios |
| Sector lockdown + OTP security register | Permanently locks designated sectors to read-only; 128-byte OTP space stores immutable keys or identifiers - meets secure boot and anti-cloning requirements |
| Ultra-deep power-down (500 nA) | Enables multi-year battery operation in always-on sensor nodes or IoT endpoints where background memory retention is required |
Applications
| Voice Recording Systems | Firmware Storage in Industrial PLCs |
|---|---|
|
Use Scenario: Continuous audio capture at 16-bit/44.1 kHz with local buffering and scheduled Flash writes. IC Role / Device Role / Timing Role: Non-volatile sequential storage with interleaved buffer writes to sustain uninterrupted sampling. Use Value: Dual-buffer architecture prevents audio dropouts during Flash page programming; RapidS™ ensures low-latency playback access. |
Use Scenario: Storing and updating programmable logic controller firmware with field-upgrade capability and rollback safety. IC Role / Device Role / Timing Role: Code storage with sector lockdown protecting bootloader region and OTP register storing version hash. Use Value: Sector protection + lockdown prevents accidental or malicious overwrite; suspend/resume allows safe mid-update interruption. |
| Medical Imaging Endpoints | Automotive ADAS Camera Modules |
|
Use Scenario: Capturing compressed ultrasound frames to local Flash before wireless transmission to central station. IC Role / Device Role / Timing Role: High-throughput sequential buffer-to-Flash transfer with deterministic erase timing. Use Value: Quad-I/O read speeds (>30 MB/s) accelerate frame retrieval; 20-year retention ensures archival integrity. |
Use Scenario: Storing calibration data, lens correction maps, and firmware patches in compact camera modules operating across -40°C to +105°C. IC Role / Device Role / Timing Role: Reliable non-volatile storage with extended temperature option and hardware write protection. Use Value: Industrial temp range compliance and WP pin-based hardware protection meet ASIL-B functional safety constraints. |
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 Dual/Quad-I/O; no SRAM buffers; 133 MHz max clock; no RapidS™ or sector lockdown | Lacks concurrent buffer operation and hardware sector lockdown; requires external management for streaming writes | Choose when cost sensitivity outweighs streaming performance and security needs; verify absence of buffer overlap requirement. |
| Macronix MX25L1633F | 16 Mbit SPI Flash; supports Quad-I/O and QPI; no SRAM buffers; no RapidS™; 104 MHz max; no OTP security register | Offers faster raw interface but no built-in buffer interleaving or immutable sector lockdown; relies on software-based protection | Prefer for high-speed burst reads in non-streaming applications; avoid where concurrent write/read or tamper-proof sectors are mandatory. |
Compared with W25Q16JW and MX25L1633F, the AT45DQ161-MHF-Y uniquely integrates dual SRAM buffers with RapidS™ acceleration and hardware-enforced sector lockdown - delivering deterministic streaming performance and stronger firmware integrity assurance without host CPU intervention.
Availability
AT45DQ161-MHF-Y is available at Aetrix Electronics and suitable for voice recording systems, industrial firmware storage, and medical imaging endpoints requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT45DQ161-MHF-Y 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 AT45DQ161 belongs to Renesas' DataFlash family, designed specifically for high-reliability sequential-access storage in resource-constrained embedded systems requiring concurrent operation and robust data security.
FAQ
What is the default page size configuration for AT45DQ161-MHF-Y?
The AT45DQ161-MHF-Y is factory pre-configured to use the 528-byte page size by default - matching legacy DataFlash addressing and enabling drop-in replacement in existing designs. The 512-byte binary-aligned option is available upon order specification and can be verified via the Configuration Register (CR) bit CR[7].
Does AT45DQ161-MHF-Y support true Quad-I/O for both read and write operations?
AT45DQ161-MHF-Y supports Quad-output Read (using IO0–IO3) and Quad-input Buffer Write (using IO0–IO3), but main memory page programming occurs through buffer transfer - not direct Quad-I/O writes. This architecture maintains signal integrity while enabling high-bandwidth streaming via dual-buffer overlap.
How does the sector lockdown feature work on AT45DQ161-MHF-Y?
Sector lockdown on AT45DQ161-MHF-Y is implemented via the Sector Lockdown Register: once a sector is locked, it becomes permanently read-only - even if WP is deasserted or software commands attempt modification. Lockdown is irreversible and enforced in hardware, providing tamper-resistant protection for bootloader or calibration data.
Can AT45DQ161-MHF-Y operate across the full industrial temperature range?
Yes, AT45DQ161-MHF-Y is rated for the full industrial temperature range (−40°C to +85°C) as standard. An extended temperature option (−40°C to +105°C) is also available for automotive and harsh-environment applications, confirmed in the device ordering information table (DS-AT45DQ161-8790, Page 72).
What is the purpose of the 128-byte OTP security register in AT45DQ161-MHF-Y?
The 128-byte OTP security register in AT45DQ161-MHF-Y contains 64 bytes factory-programmed with a unique device identifier and 64 bytes user-programmable for keys, certificates, or secure boot metadata. Once written, OTP bytes cannot be altered - establishing cryptographic root-of-trust for firmware authentication and anti-counterfeiting.
AT45DQ161-MHF-Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UDFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 16Mbit
- Memory Organization:
- 528 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 ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (5x6)
AT45DQ161-MHF-Y FAQ
1.How can I place an order for AT45DQ161-MHF-Y through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-MHF-Y 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-MHF-Y reliable?
The price and inventory of AT45DQ161-MHF-Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DQ161-MHF-Y is usually 5 days.
3.What payment methods are accepted for AT45DQ161-MHF-Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-MHF-Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-MHF-Y?
AT45DQ161-MHF-Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-MHF-Y 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-MHF-Y?
For technical support, including AT45DQ161-MHF-Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-MHF-Y requirements.
6.How does Aetrix verify that AT45DQ161-MHF-Y is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-MHF-Y 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-MHF-Y meets industry standards.
7.What is the process for return or replacement of AT45DQ161-MHF-Y?
All AT45DQ161-MHF-Y units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-MHF-Y, 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-MHF-Y part is unused and in its original packaging.
Return procedure for AT45DQ161-MHF-Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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