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Renesas AT45DQ161-MHD-T
- Part No.:
- AT45DQ161-MHD-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT45DQ161-MHD-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,303
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Product details
Overview
AT45DQ161-MHD-T from Renesas Electronics is a 16-Mbit serial DataFlash memory IC 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, firmware storage, and industrial logging systems.
For engineers reviewing the AT45DQ161-MHD-T datasheet, AT45DQ161-MHD-T pinout, AT45DQ161-MHD-T application, or AT45DQ161-MHD-T equivalent, key selection criteria include SPI mode 0/3 compatibility, RapidS™ operation, ultra-low 500 nA deep power-down current, sector lockdown security, and JEDEC-standard manufacturer/device ID read capability.
Technical Context
The AT45DQ161-MHD-T implements a dual-buffered sequential-access Flash architecture with dedicated SRAM buffers enabling true background programming: one buffer accepts new data while the other transfers to main memory. Its command set supports byte/page program, buffer-to-main-memory page program (with or without built-in erase), and flexible erase granularity-page (512/528 B), block (4 kB), sector (128 kB), or chip (16 Mbit).
RapidS™ mode reduces instruction overhead by eliminating dummy cycles during high-speed reads, achieving 6 ns clock-to-output time. Dual- and Quad-I/O operations use shared pins (SO/SI) in time-multiplexed configurations, requiring explicit quad-enable commands and configuration register writes to activate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 16 Mbit (2,097,152 bytes), organized as 4,096 pages of 512 or 528 bytes |
| Supply Voltage | 2.3 V to 3.6 V - enables direct interfacing with 2.5 V and 3.3 V logic without level shifters |
| Max Clock Frequency | 85 MHz for SPI, Dual-I/O, and Quad-I/O - supports high-throughput firmware updates and audio streaming |
| Access Time | 6 ns max clock-to-output (tV) - ensures deterministic timing in real-time control loops |
| Power-Down Current | 500 nA typical ultra-deep power-down - extends battery life in always-on sensor nodes |
| Endurance & Retention | 100,000 program/erase cycles per page; 20-year data retention - suitable for field-upgradable industrial firmware |
| Page Size Config | User-selectable 512-byte or 528-byte pages via factory pre-configuration - aligns with legacy DataFlash or standard NAND emulation needs |
Pinout & Package
AT45DQ161-MHD-T uses an 8-pin Ultra-thin DFN package (5 mm × 6 mm × 0.6 mm), RoHS-compliant and halide-free. Pin functions are electrically defined per JEDEC SOIC pinout mapping, adapted to DFN pad layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command decoding; must be held low for entire multi-byte transaction |
| SCK | Serial Clock | Input clock synchronizing all SPI data transfers; supports modes 0 and 3 (CPOL=0/1, CPHA=0/1) |
| MOSI | Master Out Slave In | Serial data input for commands, addresses, and write data; also used for Dual/Quad-I/O input when configured |
| MISO | Master In Slave Out | Serial data output for read operations; also used for Dual/Quad-I/O output when configured |
| WP | Write Protect | Hardware-enabled sector protection override; low = enable protection, high = disable (when software protection active) |
| RESET | Hardware Reset | Active-low asynchronous reset; forces device into known state and exits deep power-down |
| VCC | Power Supply | 2.3–3.6 V core and I/O supply; decoupling capacitor required within 10 mm of pin |
| GND | Ground | Reference for all signals and power; separate analog/digital ground not required |
Key Features
| Feature | Design Value |
|---|---|
| Dual/Quad-I/O Read & Write | Enables 2× or 4× throughput vs. standard SPI - critical for boot code loading and high-frame-rate image capture |
| Two Independent SRAM Buffers | Allows pipelined write operations: receive next page into Buffer 2 while programming Buffer 1 to flash - eliminates write latency stalls |
| Program/Erase Suspend & Resume | Permits interrupting long erase operations to service urgent reads or writes - essential for real-time OS coexistence |
| 128-byte OTP Security Register | 64-byte factory-unique ID + 64-byte user-programmable space - supports secure boot key storage and device binding |
| Individual Sector Lockdown | Makes any 128 kB sector permanently read-only after freeze command - prevents accidental or malicious firmware overwrite |
Applications
| Industrial Firmware Storage | Medical Device Data Logging |
|---|---|
Use Scenario: Storing and updating bootloader and application firmware in programmable logic controllers (PLCs) with zero downtime requirements. IC Role / Device Role / Timing Role: Non-volatile program memory with background reprogramming capability via dual buffers. Use Value: Enables over-the-air firmware updates without halting control execution - verified at 85 MHz Quad-I/O read speed and 6 ns tV timing. |
Use Scenario: Capturing timestamped physiological waveforms (ECG, EEG) in portable diagnostic equipment with battery constraints. IC Role / Device Role / Timing Role: High-reliability sequential data logger using page-erase granularity and 20-year data retention. Use Value: Ultra-low 500 nA deep power-down current extends single-charge battery life beyond 5 years in standby mode. |
| Automotive Infotainment Boot Memory | Smart Meter Firmware & Event History |
Use Scenario: Storing boot code and UI assets in automotive head units operating across -40°C to +85°C ambient range. IC Role / Device Role / Timing Role: Industrial-temperature qualified SPI Flash with RapidS™ acceleration for fast cold-boot sequences. Use Value: 85 MHz Quad-I/O read performance reduces boot time by >35% vs. legacy SPI Flash, meeting ASIL-B timing budgets. |
Use Scenario: Recording tamper-evident meter readings, firmware version history, and calibration logs in utility smart meters. IC Role / Device Role / Timing Role: Secure, sector-lockable non-volatile memory with individual sector protection and OTP registers. Use Value: Sector lockdown prevents unauthorized modification of regulatory-compliant firmware; 128-byte OTP stores cryptographic keys. |
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, Quad-SPI only (no Dual-I/O), no SRAM buffers, no RapidS™, 133 MHz max clock | Lacks background programming and sector lockdown; requires external buffering for continuous write streams | Choose for cost-sensitive designs where Quad-SPI speed suffices and concurrent read/write is not required. |
| Macronix MX25L1633F | 16 Mbit, 2.7–3.6 V, standard SPI/Dual/Quad, no SRAM buffers, no RapidS™, 104 MHz max clock, no OTP security register | No hardware-accelerated background write; no factory-unique ID or sector lockdown capability | Choose when industrial temperature range and basic Quad-I/O are sufficient, but advanced security and pipelining are unnecessary. |
Compared with W25Q16JW and MX25L1633F, the AT45DQ161-MHD-T uniquely delivers concurrent buffer-based programming, RapidS™ low-latency reads, and hardware-enforced sector lockdown - making it optimal for safety-critical, real-time, and secure firmware storage.
Availability
AT45DQ161-MHD-T is available at Aetrix Electronics and suitable for industrial firmware storage, medical data logging, and automotive infotainment boot applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT45DQ161-MHD-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-MHD-T belongs to Renesas' DataFlash family, designed specifically for high-reliability, low-power, sequential-access Flash applications requiring concurrent read/write, robust security, and rapid boot performance.
FAQ
What is the default page size configuration for AT45DQ161-MHD-T?
The AT45DQ161-MHD-T is factory pre-configured for 528-byte pages by default, matching standard DataFlash page structure. However, it can be ordered with 512-byte page configuration to align with legacy NAND emulation or specific file system requirements. Page size is fixed per unit and cannot be changed in-system.
Does AT45DQ161-MHD-T support true Quad-SPI mode with four separate I/O lines?
No. The AT45DQ161-MHD-T supports Quad-I/O operation using time-multiplexed signaling on the MOSI and MISO pins - not four dedicated I/O lines. It requires explicit quad-enable commands and configuration register writes to activate, and operates in SPI-compatible modes 0 or 3 with dual/quad bit transfer per clock edge.
How does the dual-SRAM-buffer architecture improve write throughput in AT45DQ161-MHD-T?
The AT45DQ161-MHD-T's two independent 512/528-byte SRAM buffers allow interleaved operation: while Buffer 1 is being programmed into main memory (which takes ~10 ms per page), Buffer 2 simultaneously receives new data via SPI. This eliminates idle time between page writes, enabling sustained high-speed streaming without host CPU intervention.
Can AT45DQ161-MHD-T be used as a direct replacement for older AT45DB series devices?
AT45DQ161-MHD-T maintains pin-to-pin compatibility with AT45DB161D in 8-lead SOIC packages but differs in DFN (MHD-T) packaging and adds RapidS™, enhanced Quad-I/O, and updated security features. Firmware drivers require updates for RapidS™ opcodes and quad-enable sequences, so it is not a drop-in replacement without software validation.
What security mechanisms does AT45DQ161-MHD-T provide beyond standard write protection?
AT45DQ161-MHD-T provides three layered security: (1) software/hardware sector protection with individual 128 kB sector control, (2) permanent sector lockdown (freezeable via OTP), and (3) a 128-byte OTP Security Register containing 64-byte factory-unique ID and 64-byte user-programmable space - all accessible only via authenticated commands.
AT45DQ161-MHD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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-T FAQ
1.How can I place an order for AT45DQ161-MHD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-MHD-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-MHD-T reliable?
The price and inventory of AT45DQ161-MHD-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-MHD-T is usually 5 days.
3.What payment methods are accepted for AT45DQ161-MHD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-MHD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-MHD-T?
AT45DQ161-MHD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-MHD-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-MHD-T?
For technical support, including AT45DQ161-MHD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-MHD-T requirements.
6.How does Aetrix verify that AT45DQ161-MHD-T is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-MHD-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-MHD-T meets industry standards.
7.What is the process for return or replacement of AT45DQ161-MHD-T?
All AT45DQ161-MHD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-MHD-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-MHD-T part is unused and in its original packaging.
Return procedure for AT45DQ161-MHD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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