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Renesas AT45DQ161-MHF2B-T
- Part No.:
- AT45DQ161-MHF2B-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT45DQ161-MHF2B-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,995
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Product details
Overview
AT45DQ161-MHF2B-T from Renesas Electronics is a 16-Mbit serial DataFlash memory with SPI interface, Dual-I/O and Quad-I/O support, 512/528-byte configurable page size, 85 MHz max clock frequency, and 6 ns clock-to-output time. It operates from 2.3 V to 3.6 V and targets embedded firmware storage, voice/image buffering, and boot code retention in industrial controllers and IoT edge devices.
For engineers reviewing the AT45DQ161-MHF2B-T datasheet, AT45DQ161-MHF2B-T pinout, AT45DQ161-MHF2B-T application, or AT45DQ161-MHF2B-T equivalent, key selection criteria include page-size configurability, RapidS™ high-speed read/write modes, dual SRAM buffers enabling concurrent I/O and reprogramming, ultra-low deep power-down current (500 nA), and hardware/software sector protection for secure firmware updates.
Technical Context
The AT45DQ161-MHF2B-T implements a two-buffer architecture with independent 512/528-byte SRAM buffers, enabling simultaneous data reception into one buffer while erasing/programming a page in main memory. Its command set supports legacy SPI (modes 0/3), Dual-I/O (3Bh/BBh opcodes), and Quad-I/O (6Bh/EBh opcodes) read operations, plus Dual-input/Quad-input buffer writes.
Memory organization is flexible: 4,096 pages × 512 bytes (user-configurable) or 4,096 pages × 528 bytes (default), with erase granularity spanning page (512/528 B), block (4 kB), sector (128 kB), and chip (16 Mbit). Program/erase suspend/resume and OTP security register (128 bytes) further enable real-time system responsiveness and secure device identity management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (17,301,504 bits), organized as 4,096 pages of 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 |
| Access Time | 6 ns max clock-to-output (tV) - supports tight timing margins in high-frequency microcontroller interfaces |
| Supply Voltage | 2.3 V to 3.6 V - compatible with modern low-voltage MCUs and battery-powered systems |
| Power Consumption | 500 nA typical ultra-deep power-down current - extends shelf life and enables rapid wake-up in energy-constrained nodes |
| Endurance & Retention | 100,000 program/erase cycles per page; 20-year data retention - suitable for field-upgradable firmware with long service life |
| Page Size | User-configurable 512-byte or 528-byte pages - matches legacy DataFlash compatibility or optimizes for binary-aligned firmware images |
Pinout & Package
AT45DQ161-MHF2B-T uses an 8-pad Ultra-thin DFN package (5 mm × 6 mm × 0.6 mm), RoHS-compliant and halide-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command decoding; must be held low during entire multi-byte command sequence |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports up to 85 MHz with controlled slew rate |
| 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 reads and status registers; supports single/Dual/Quad-output modes |
| WP | Write Protect | Hardware-enabled sector lockdown; active-low signal that freezes protection register when asserted |
| RESET | Reset Input | Active-low hardware reset; forces device into known state and clears internal status flags |
| VCC | Power Supply | 2.3–3.6 V supply; decoupling capacitor required within 10 mm of pin for stable high-speed operation |
| GND | Ground | Reference for all I/O and internal circuitry; separate analog/digital ground not required |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM Buffers | Two independent 512/528-byte buffers allow continuous data streaming: receive new data into Buffer 1 while programming Buffer 2 to main memory |
| RapidS™ Operation | High-speed read/write mode reducing command overhead and improving effective bandwidth by eliminating dummy cycles in Quad-I/O reads |
| Flexible Erase Granularity | Four-level erase hierarchy (page/block/sector/chip) enables precise firmware patching without full-image rewrites |
| OTP Security Register | 128-byte one-time programmable register: 64 bytes factory-programmed unique ID + 64 bytes user-programmable for keys or calibration data |
| Hardware Sector Lockdown | Permanent read-only lock for any sector via WP pin assertion and dedicated command - prevents accidental or malicious overwrite of bootloader regions |
Applications
| Industrial PLC Firmware Storage | Medical Imaging Buffer Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers with field upgrade capability. IC Role / Device Role / Timing Role: Non-volatile program memory with fast Quad-I/O read access for boot-time code fetch and Dual-I/O buffer write for secure firmware patches. Use Value: 100,000-cycle endurance and 20-year retention ensure reliable operation over 15+ year PLC service life; sector lockdown protects bootloader integrity. | Use Scenario: Temporary storage of ultrasound or endoscopic image frames before compression and transmission. IC Role / Device Role / Timing Role: High-bandwidth sequential buffer memory using RapidS™ Quad-Output Read (6Bh) and Dual-Input Buffer Write (38h). Use Value: 85 MHz interface and 6 ns tV enable sub-100 ns per-word access - critical for real-time frame capture at >30 fps without DRAM latency. |
| Smart Meter Bootloader Storage | IoT Edge Node Configuration Vault |
Use Scenario: Secure storage of signed bootloader code and cryptographic keys in ANSI C12.22-compliant utility meters. IC Role / Device Role / Timing Role: Trusted execution root-of-trust component with hardware write protection and OTP security register for device identity binding. Use Value: 128-byte OTP register stores factory-assigned unique ID and user-programmable AES keys; sector lockdown prevents runtime modification of bootloader sectors. | Use Scenario: Persistent storage of sensor calibration coefficients, network credentials, and OTA update metadata in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Low-power configuration memory supporting deep power-down (500 nA) between sensor readings and fast wake-up for credential retrieval. Use Value: Ultra-deep power-down current extends 10-year battery life; 2.3 V minimum supply ensures operation down to primary cell end-of-life voltage (~2.4 V). |
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 Quad SPI flash; no SRAM buffers; no RapidS™; fixed 4-KB sectors; no OTP register | Lacks concurrent buffer operation and hardware sector lockdown; requires external ECC for robustness | Select when cost sensitivity outweighs need for interleaved I/O or secure sector locking |
| Macronix MX25L1633F | 16-Mbit standard SPI flash; supports Dual/Quad I/O but no RapidS™; no configurable page size; no OTP register | Higher active current (20 mA vs. 11 mA); no ultra-deep power-down mode; limited protection granularity | Select when legacy SPI compatibility and broad distributor availability are prioritized over power efficiency and advanced security |
Compared with W25Q16JW and MX25L1633F, AT45DQ161-MHF2B-T uniquely delivers concurrent buffer I/O, RapidS™ acceleration, ultra-low 500 nA deep power-down, and factory-programmed unique ID - making it optimal for secure, high-throughput, energy-constrained embedded firmware storage.
Availability
AT45DQ161-MHF2B-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical imaging buffer memory, and smart meter bootloader storage requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT45DQ161-MHF2B-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 specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT applications.
The AT45DQ161 product line delivers high-reliability serial DataFlash memory optimized for embedded systems requiring fast, secure, and low-power non-volatile storage with advanced command flexibility and hardware protection.
FAQ
What is the default page size configuration for AT45DQ161-MHF2B-T?
The AT45DQ161-MHF2B-T ships pre-configured with a 528-byte page size by default, matching standard DataFlash compatibility. However, it can be factory-ordered with 512-byte page size or reconfigured in-system via the Buffer and Page Size Configuration command (Table 25). This flexibility allows alignment with legacy firmware tools or binary-aligned image layouts without hardware redesign.
Does AT45DQ161-MHF2B-T support true Quad-SPI (QSPI) protocol?
No, AT45DQ161-MHF2B-T does not implement JEDEC-standard QSPI. It supports Quad-I/O and Dual-I/O modes using standard SPI pins (MOSI/MISO) with opcode-driven multiplexing (e.g., 6Bh for Quad-Output Read). Unlike QSPI, it lacks dedicated IO0–IO3 pins and hardware QSPI controller handshake - but achieves comparable bandwidth via RapidS™-optimized command sequences.
How does the dual-buffer architecture improve write performance in AT45DQ161-MHF2B-T?
The dual 512/528-byte SRAM buffers in AT45DQ161-MHF2B-T enable pipelined writes: while Buffer 1 receives new data via SPI, Buffer 2 simultaneously programs its contents to main memory. This eliminates idle wait states during page reprogramming, sustaining continuous data throughput - especially valuable in audio streaming, firmware OTA updates, and real-time logging applications.
Can AT45DQ161-MHF2B-T be used as EEPROM emulation?
Yes, AT45DQ161-MHF2B-T supports EEPROM emulation through software-managed wear leveling across pages. Its 100,000 program/erase cycles per page, combined with page-erase granularity and buffer-to-memory transfer commands (e.g., D3h), allow byte- or word-level updates by copying, modifying, and rewriting pages - enabling robust parameter storage without external EEPROM.
What is the function of the WP pin on AT45DQ161-MHF2B-T beyond basic write protection?
Beyond disabling writes, the WP pin on AT45DQ161-MHF2B-T enables permanent sector lockdown: when asserted during a Sector Lockdown command (3Ah), it freezes the sector lockdown register, making protected sectors irreversibly read-only. This hardware-enforced immutability is critical for bootloader regions and cryptographic key storage where runtime software compromise must not override protection.
AT45DQ161-MHF2B-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:
- 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 ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (5x6)
AT45DQ161-MHF2B-T FAQ
1.How can I place an order for AT45DQ161-MHF2B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-MHF2B-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-MHF2B-T reliable?
The price and inventory of AT45DQ161-MHF2B-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-MHF2B-T is usually 5 days.
3.What payment methods are accepted for AT45DQ161-MHF2B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-MHF2B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-MHF2B-T?
AT45DQ161-MHF2B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-MHF2B-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-MHF2B-T?
For technical support, including AT45DQ161-MHF2B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-MHF2B-T requirements.
6.How does Aetrix verify that AT45DQ161-MHF2B-T is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-MHF2B-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-MHF2B-T meets industry standards.
7.What is the process for return or replacement of AT45DQ161-MHF2B-T?
All AT45DQ161-MHF2B-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-MHF2B-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-MHF2B-T part is unused and in its original packaging.
Return procedure for AT45DQ161-MHF2B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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