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Renesas AT45DQ161-MHF-T
- Part No.:
- AT45DQ161-MHF-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT45DQ161-MHF-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,995
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Product details
Overview
AT45DQ161-MHF-T 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 during main memory reprogramming in industrial control loggers and embedded firmware storage systems.
For engineers reviewing the AT45DQ161-MHF-T datasheet, AT45DQ161-MHF-T pinout, AT45DQ161-MHF-T application, or AT45DQ161-MHF-T equivalent, key selection considerations include SPI mode 0/3 compatibility, RapidS™ operation, ultra-deep power-down (500 nA), sector lockdown security, and 100,000 program/erase endurance per page.
Technical Context
The AT45DQ161-MHF-T implements a dual-buffered sequential-access Flash architecture with dedicated SRAM buffers that operate independently of main memory programming cycles. Its RapidS™ mode supports accelerated read/write timing with reduced setup/hold requirements versus standard SPI.
It supports four distinct I/O configurations: single-line SPI, dual-output/dual-input, quad-output/quad-input, and legacy continuous array read - all selectable via command opcodes. Page size (512 vs. 528 bytes) is factory-configurable and non-volatile, affecting address mapping and buffer alignment.
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 | 85 MHz max for SPI, Dual-I/O, and Quad-I/O modes - enables >30 MB/s effective throughput in Quad-Output Read |
| Page Size | User-configurable at order time: 512 bytes (binary-aligned) or 528 bytes (DataFlash-compatible); determines addressing granularity and buffer usage |
| Power Consumption | 500 nA ultra-deep power-down current (typical); 25 µA standby; 11 mA active read at 20 MHz - supports battery-backed IoT nodes |
| Endurance & Retention | 100,000 program/erase cycles per page minimum; 20-year data retention at industrial temperature range (–40°C to +85°C) |
| Security Features | 128-byte OTP Security Register (64-byte factory UID + 64-byte user-programmable); per-sector lockdown to permanent read-only state |
| 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-T is packaged in an 8-pad Ultra-thin DFN (5 mm × 6 mm × 0.6 mm) with wettable flank leads, optimized for space-constrained PCB layouts and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command decoding; must be asserted before SCK edge to initiate valid transaction |
| SCK | Serial Clock | Input clock synchronized to SPI mode 0 or 3; controls timing of data sampling on SI and SO lines |
| SI | Serial Input | Command/address/data input line for standard SPI, Dual-Input, and Quad-Input operations |
| SO | Serial Output | Data output line for standard SPI and Dual-Output reads; shares pin with IO0 in Quad-I/O mode |
| WP | Write Protect | Hardware-enabled sector protection override; low = enables write/erase lock; high = allows configuration changes |
| RESET | Hardware Reset | Active-low asynchronous reset; forces device into known state and exits Deep Power-Down mode |
| HOLD | Hold Function | Pauses ongoing SPI transfer without deselecting CS; maintains internal state during host arbitration delays |
| VSS | Ground | Reference return path for all digital and analog circuitry; requires low-impedance connection to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Buffer Architecture | Two independent 512/528-byte SRAM buffers allow simultaneous data reception while main memory is being programmed - eliminates write latency bottlenecks in streaming applications |
| RapidS™ Operation | Reduces clock-to-output delay to ≤6 ns and relaxes tSU/tH timing margins - enables reliable high-speed communication on marginal PCB traces |
| Flexible Erase Granularity | Page (512/528 B), Block (4 kB), Sector (128 kB), and Chip (16 Mbit) erase options - supports fine-grained firmware updates and wear leveling |
| Program/Erase Suspend | Allows temporary suspension of long-running erase or program operations to service urgent read requests - critical for real-time logging systems |
| OTP Security Register | 128-byte one-time programmable register with factory-assigned 64-byte UID - enables secure device authentication and anti-cloning in certified medical or industrial devices |
| Ultra-Deep Power-Down | 500 nA typical current draw with retained configuration state - extends battery life in always-on sensor nodes beyond 10 years |
Applications
| Firmware Storage | Industrial Data Logger |
|---|---|
Use Scenario: Storing boot code and field-upgradable firmware images for microcontrollers in networked gateways. IC Role / Device Role / Timing Role: Non-volatile program memory accessed via SPI during cold start and OTA update sequences. Use Value: 85 MHz Quad-Output Read enables sub-100 ms firmware load times; sector lockdown prevents accidental overwrite of bootloader region. |
Use Scenario: Continuous timestamped sensor data capture in remote environmental monitoring stations powered by solar/battery. IC Role / Device Role / Timing Role: High-endurance sequential write buffer with background page reprogramming enabled by dual-SRAM buffers. Use Value: 100,000-cycle endurance and 20-year retention ensure 10+ years of unattended operation; ultra-deep power-down extends battery life. |
| Secure Device Identity | Medical Diagnostic Instrument |
Use Scenario: Embedding unique hardware identifiers and cryptographic keys in portable diagnostic tools requiring regulatory traceability. IC Role / Device Role / Timing Role: Secure storage element holding factory-programmed UID and user-configured access credentials. Use Value: 128-byte OTP Security Register provides tamper-resistant identity binding; sector lockdown prevents post-deployment modification of ID fields. |
Use Scenario: Storing calibrated sensor coefficients, calibration logs, and audit trails in FDA-cleared ultrasound or ECG equipment. IC Role / Device Role / Timing Role: Reliable, long-life non-volatile memory for mission-critical configuration and compliance data. Use Value: Industrial temperature rating (–40°C to +85°C) and 20-year data retention meet IEC 62304 software lifecycle requirements; individual sector protection isolates calibration data from firmware 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 W25Q16JW | 16 Mbit SPI NOR Flash; no dual/quad buffer architecture; lacks RapidS™; 4 KB uniform sectors only; no OTP security register | Lower-cost firmware storage where concurrent buffer operation and hardware UID are not required | Choose for cost-sensitive consumer applications lacking security or streaming requirements |
| Macronix MX25L1633F | 16 Mbit SPI NOR Flash; supports Quad I/O but no dual-buffer SRAM; no program/erase suspend; no sector lockdown capability | High-speed code execution from XIP mode; less suitable for high-frequency sequential write logging | Prefer when executing code directly from flash (XIP) is needed over buffered streaming writes |
Compared with W25Q16JW and MX25L1633F, the AT45DQ161-MHF-T uniquely delivers concurrent buffer operation, RapidS™ timing acceleration, and hardware-enforced sector lockdown - making it optimal for streaming data loggers and secure firmware platforms where write latency and identity integrity are critical.
Availability
AT45DQ161-MHF-T is available at Aetrix Electronics and suitable for industrial data loggers, secure medical instrumentation, and firmware storage systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT45DQ161-MHF-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 belongs to Renesas' DataFlash® family, designed specifically for high-reliability sequential-access storage in resource-constrained embedded systems requiring fast streaming writes and robust data integrity.
FAQ
What is the default page size configuration for AT45DQ161-MHF-T?
The AT45DQ161-MHF-T is ordered pre-configured to either 512-byte or 528-byte page size; the -MHF-T variant uses the 528-byte default DataFlash-compatible page format. This affects command addressing, buffer alignment, and memory map layout - confirmed in Table 25 and Section 12 of the datasheet.
Does AT45DQ161-MHF-T support true Quad-SPI (QSPI) protocol with 4-bit address/command phase?
No. The AT45DQ161-MHF-T supports Quad-Output and Quad-Input modes for data transfer only - address and command phases remain single-bit SPI. It does not implement full QSPI with 4-bit command/address lanes, unlike dedicated QSPI NOR devices.
Can AT45DQ161-MHF-T be used as a direct replacement for legacy AT45DB161D in existing designs?
Pinout and command set are backward-compatible with AT45DB161D, but AT45DQ161-MHF-T adds RapidS™ timing, enhanced security registers, and updated AC characteristics. System-level validation of timing margins and security register initialization is required before drop-in use.
How is the 128-byte Security Register structured in AT45DQ161-MHF-T?
The AT45DQ161-MHF-T Security Register is divided into two 64-byte segments: bytes 0–63 are factory-programmed with a unique device identifier (UID), and bytes 64–127 are user-programmable one-time. Once written, no byte can be altered - verified in Section 9.2 and Table 19 of the datasheet.
What is the purpose of the HOLD pin on AT45DQ161-MHF-T, and how does it differ from CS deassertion?
The HOLD pin pauses an active SPI transaction without resetting internal state or requiring CS reassertion, enabling multi-master arbitration. Unlike CS deassertion - which terminates the command and resets the instruction decoder - HOLD preserves the current operation context, allowing seamless resumption after bus release.
AT45DQ161-MHF-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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-T FAQ
1.How can I place an order for AT45DQ161-MHF-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-MHF-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-MHF-T reliable?
The price and inventory of AT45DQ161-MHF-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-MHF-T is usually 5 days.
3.What payment methods are accepted for AT45DQ161-MHF-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-MHF-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-MHF-T?
AT45DQ161-MHF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-MHF-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-MHF-T?
For technical support, including AT45DQ161-MHF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-MHF-T requirements.
6.How does Aetrix verify that AT45DQ161-MHF-T is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-MHF-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-MHF-T meets industry standards.
7.What is the process for return or replacement of AT45DQ161-MHF-T?
All AT45DQ161-MHF-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-MHF-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-MHF-T part is unused and in its original packaging.
Return procedure for AT45DQ161-MHF-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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