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Renesas AT45DQ161-MHD-Y
- Part No.:
- AT45DQ161-MHD-Y
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT45DQ161-MHD-Y.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,362
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Product details
Overview
AT45DQ161-MHD-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 operates from 2.3 V to 3.6 V and targets embedded firmware storage, voice/image buffering, and code execution in space-constrained industrial controllers.
For engineers reviewing the AT45DQ161-MHD-Y datasheet, AT45DQ161-MHD-Y pinout, AT45DQ161-MHD-Y application, or AT45DQ161-MHD-Y equivalent, key selection factors include SPI mode 0/3 compatibility, RapidS™ high-speed read/write timing, ultra-deep power-down current (500 nA), sector lockdown security, and dual-buffer interleaved programming capability.
Technical Context
The AT45DQ161-MHD-Y implements a sequential-access Flash architecture with two dedicated SRAM buffers enabling concurrent data reception and main memory reprogramming. Its RapidS™ mode supports accelerated command execution and reduced latency for continuous array reads using opcodes 0Bh and 1Bh.
It supports four distinct erase granularities-page (512/528 B), block (4 kB), sector (128 kB), and chip (16 Mbit)-with suspend/resume functionality during program/erase operations. Sector protection and permanent lockdown are enforced via hardware WP pin and software-configurable registers.
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 and 3.3 V logic systems |
| Max clock frequency | 85 MHz for SPI, Dual-I/O, and Quad-I/O modes; supports high-throughput firmware updates |
| Read access time | 6 ns max clock-to-output (tV); critical for real-time code fetch in microcontroller boot applications |
| Power-down current | 500 nA typical ultra-deep power-down; extends battery life in always-on IoT edge nodes |
| Endurance & retention | 100,000 program/erase cycles per page; 20-year data retention at industrial temperature range |
| Security features | 128-byte OTP security register (64-byte factory UID + 64-byte user-programmable) |
Pinout & Package
AT45DQ161-MHD-Y is packaged in an 8-pad Ultra-thin DFN (5 × 6 × 0.6 mm) with wettable flank leads, optimized for automated optical inspection and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command decoding; supports multi-device daisy-chaining |
| SCK | Serial Clock | Input clock synchronized to SPI master; supports modes 0 and 3 polarity/phase configurations |
| MOSI | Master Out Slave In | Serial data input for commands, addresses, and write data; supports single/dual/quad input modes |
| MISO | Master In Slave Out | Serial data output for read operations; supports single/dual/quad output modes |
| WP | Write Protect | Hardware-enabled sector protection lock; low-active assertion disables all program/erase commands |
| RESET | Reset Input | Active-low hardware reset; initializes internal state machine and releases from deep power-down |
| VCC | Power Supply | 2.3–3.6 V core and I/O supply; decoupling required within 10 mm of pin |
| GND | Ground | Reference return path for all digital and analog circuitry; must be connected to low-impedance ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Dual/Quad-I/O operation | Enables 2× or 4× data throughput vs standard SPI; reduces firmware update time by up to 75% in high-bandwidth systems |
| Interleaved buffer programming | Allows simultaneous data loading into one SRAM buffer while programming the other into Flash; eliminates write stalls in streaming audio/video recorders |
| User-configurable page size | Factory-set to 528-byte default or 512-byte option; aligns with legacy DataFlash or compact filesystem partitioning requirements |
| Program/Erase suspend/resume | Permits urgent read access during long erase cycles; essential for real-time HMI or safety-critical logging |
| Sector lockdown | Makes any memory sector permanently read-only after freeze command; prevents accidental or malicious firmware overwrite in certified medical devices |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code |
|---|---|
Use Scenario: Storing and executing ladder logic firmware in DIN-rail mounted programmable logic controllers with limited board space. IC Role / Device Role / Timing Role: Non-volatile code storage with fast random-page read and rapid boot sequence execution. Use Value: 6 ns tV enables sub-100 µs instruction fetch latency; dual-buffering allows background firmware patching without halting control loop execution. | Use Scenario: Securing boot loader and regulatory-certified application code in portable diagnostic ultrasound units. IC Role / Device Role / Timing Role: Trusted code vault with hardware-enforced read-only lockdown for FDA 510(k)-validated binaries. Use Value: Sector lockdown + 64-byte factory UID ensures immutable firmware identity; 20-year retention meets Class II medical device lifecycle requirements. |
| Smart Meter Data Logging | Automotive ADAS Sensor Calibration |
Use Scenario: Recording time-stamped energy consumption metrics in ANSI C12.19-compliant smart meters operating on lithium primary cells. IC Role / Device Role / Timing Role: Low-power cyclic data buffer with wear-leveling support across 128 kB sectors. Use Value: 500 nA ultra-deep power-down extends 10-year battery life; page erase granularity minimizes write amplification during hourly log commits. | Use Scenario: Storing factory-calibrated lookup tables and compensation coefficients for radar front-end modules in ISO 26262 ASIL-B systems. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration storage with hardware write protection. Use Value: WP pin + sector protection register prevents runtime corruption; 100,000-cycle endurance exceeds automotive lifetime calibration update needs. |
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, 1.65–3.6 V supply, no dual/quad-I/O; uses standard SPI only; lacks SRAM buffers and RapidS™ | Lower-cost replacement where high-speed streaming or interleaved writes are not required | Select when system design prioritizes cost over throughput and does not require concurrent buffer operations |
| Macronix MX25L1633F | 16 Mbit, 2.3–3.6 V, supports Dual/Quad SPI but no RapidS™ or SRAM buffers; no sector lockdown feature | Drop-in compatible for basic code storage; lacks advanced security and streaming optimization | Choose for legacy designs migrating from standard DataFlash where buffer management is handled externally |
Compared with W25Q16JW and MX25L1633F, the AT45DQ161-MHD-Y uniquely delivers concurrent buffer operation, RapidS™ acceleration, and hardware-enforced sector lockdown-making it optimal for real-time streaming and safety-critical firmware storage where external buffering or software-based wear leveling is impractical.
Availability
AT45DQ161-MHD-Y is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code, and smart meter data logging requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT45DQ161-MHD-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, high-throughput sequential-access storage in resource-constrained embedded systems requiring secure, low-power non-volatile memory.
FAQ
What is the default page size configuration for AT45DQ161-MHD-Y?
The AT45DQ161-MHD-Y is factory pre-configured to use 528-byte pages by default, matching the standard DataFlash® page format. This setting can be changed to 512-byte pages via the Buffer and Page Size Configuration command (0x3D), but the change persists only until power cycle unless stored in non-volatile configuration register-verified in DS-AT45DQ161-8790 Rev. H Section 12.
Does AT45DQ161-MHD-Y support true Quad-SPI (QSPI) protocol with 4-bit address/command lanes?
No, AT45DQ161-MHD-Y supports Quad-I/O (QIO) mode for data transfer only-not full QSPI. Address and command phases remain single-bit; only read/write data paths operate in quad mode (e.g., opcode 6Bh for Quad-output Read). This is explicitly defined in Section 5.1 and Table 30 of the datasheet.
How does the AT45DQ161-MHD-Y handle power loss during a page program operation?
The AT45DQ161-MHD-Y guarantees atomic page programming: if power fails mid-operation, the page remains unaltered or fully written-no partial writes occur. This is ensured by internal state-machine validation and write-verify sequencing, as confirmed in Section 7.4–7.7 and AC Characteristics Table 19.5 of DS-AT45DQ161-8790 Rev. H.
Can the 128-byte Security Register in AT45DQ161-MHD-Y be erased or rewritten after initial programming?
The 64-byte factory-programmed UID portion of the Security Register is permanently locked and cannot be altered. The 64-byte user-programmable section can be written once per byte-subsequent writes to an already-programmed byte have no effect. This one-time programmability is enforced at silicon level and documented in Section 9.2 and Table 19 of the datasheet.
Is AT45DQ161-MHD-Y pin-compatible with earlier AT45DB series devices?
No, AT45DQ161-MHD-Y is not pin-compatible with AT45DBxx series. While both share 8-pin DFN/SOIC footprints, the AT45DQ161-MHD-Y repurposes the RESET pin for enhanced deep power-down control and modifies internal command mapping (e.g., RapidS™ opcodes differ), requiring PCB layout and firmware updates-confirmed in Pin Configurations Table 1 and Revision History Section 30.
AT45DQ161-MHD-Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UDFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- 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:
- 2.5V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (5x6)
AT45DQ161-MHD-Y FAQ
1.How can I place an order for AT45DQ161-MHD-Y through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-MHD-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-MHD-Y reliable?
The price and inventory of AT45DQ161-MHD-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-MHD-Y is usually 5 days.
3.What payment methods are accepted for AT45DQ161-MHD-Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-MHD-Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-MHD-Y?
AT45DQ161-MHD-Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-MHD-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-MHD-Y?
For technical support, including AT45DQ161-MHD-Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-MHD-Y requirements.
6.How does Aetrix verify that AT45DQ161-MHD-Y is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-MHD-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-MHD-Y meets industry standards.
7.What is the process for return or replacement of AT45DQ161-MHD-Y?
All AT45DQ161-MHD-Y units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-MHD-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-MHD-Y part is unused and in its original packaging.
Return procedure for AT45DQ161-MHD-Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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