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Renesas AT45DQ161-SHFHD-T
- Part No.:
- AT45DQ161-SHFHD-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DQ161-SHFHD-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,670
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Product details
Overview
AT45DQ161-SHFHD-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 and main memory reprogramming in embedded voice, image, and firmware storage systems.
For engineers reviewing the AT45DQ161-SHFHD-T datasheet, AT45DQ161-SHFHD-T pinout, AT45DQ161-SHFHD-T application, or AT45DQ161-SHFHD-T equivalent, key selection considerations include RapidS™ operation mode compatibility, buffer-to-main-memory program with built-in erase, sector lockdown security, ultra-deep power-down (500 nA), and JEDEC-standard Manufacturer/Device ID read capability.
Technical Context
The AT45DQ161-SHFHD-T implements a dual-buffered architecture where two independent SRAM buffers (each sized to match the selected page size) operate in parallel with the main flash array. This enables true interleaved write operations-data can be loaded into one buffer while the other buffer transfers to main memory or while main memory undergoes page/sector/chip erase.
It supports SPI modes 0 and 3, RapidS™ high-speed timing, and configurable I/O widths (single/dual/quad) for both read and write commands. The device uses dedicated opcodes for Dual-input/Quad-input Buffer Write and Dual-output/Quad-output Read, with tV ≤ 6 ns clock-to-output delay at 85 MHz operation.
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 >34 MB/s effective throughput in Quad-Output Read |
| Page size | User-configurable: 512 bytes (binary-aligned) or 528 bytes (DataFlash-compatible); factory pre-set per order |
| Power consumption | 500 nA ultra-deep power-down (typical); 25 µA standby; 11 mA active read current at 20 MHz |
| Erase granularity | Page (512/528 B), Block (4 kB), Sector (128 kB), Chip (16 Mbit) - supports fine-grained firmware updates and wear leveling |
| Data retention & endurance | 20 years retention; ≥100,000 program/erase cycles per page (50,000 for extended temp option) |
| Security features | 128-byte OTP Security Register (64 B factory UID + 64 B user-programmable); per-sector lockdown; hardware/software sector protection |
Pinout & Package
AT45DQ161-SHFHD-T is packaged in an 8-pad Ultra-thin DFN (5 mm × 6 mm × 0.6 mm), RoHS-compliant, green halide-free package.
| 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 synchronizing all SPI data transfers; supports up to 85 MHz; phase/polarity configurable for modes 0/3 |
| MOSI | Master Out Slave In | Serial data input for commands, addresses, and write data; supports single/dual/quad input modes via opcode selection |
| MISO | Master In Slave Out | Serial data output for read operations; supports single/dual/quad output with dedicated opcodes (e.g., 3Bh/6Bh) |
| WP | Write Protect | Hardware-enabled sector protection control; low = enable protection; tied high or controlled by host MCU for dynamic lock/unlock |
| RESET | Hardware Reset | Active-low asynchronous reset; returns device to power-on state without requiring VCC cycle; supports system-level recovery |
| VCC | Supply Voltage | 2.3 V to 3.6 V single supply; supports direct interfacing with 2.5 V and 3.3 V logic domains |
| GND | Ground | Reference return path for all digital and analog circuitry; requires low-impedance PCB connection to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| RapidS™ operation | Enables 85 MHz clock rates with tV ≤ 6 ns output timing - reduces read latency and increases streaming bandwidth in real-time audio/video buffering |
| Dual/Quad I/O support | Increases effective data rate up to 4× vs standard SPI - e.g., Quad-Output Read achieves ~34 MB/s at 85 MHz, critical for fast boot code loading |
| Two independent SRAM buffers | Each buffer matches configured page size (512/528 B); allows full overlap of buffer fill and main memory programming - eliminates write stalls in continuous data logging |
| Program/Erase Suspend/Resume | Permits interrupting long erase operations to service time-critical reads or writes - essential for deterministic response in real-time control systems |
| Per-sector lockdown | Irreversibly locks any sector to read-only via OTP register; prevents accidental or malicious firmware overwrite - meets secure boot partition requirements |
| Ultra-deep power-down mode | 500 nA typical current draw - extends battery life in always-on IoT sensors and portable medical devices during extended idle periods |
Applications
| Industrial Data Logger | Medical Imaging Device |
|---|---|
|
Use Scenario: Continuous acquisition of sensor telemetry (temperature, pressure, vibration) at 10 kHz with timestamped storage. IC Role / Device Role / Timing Role: Non-volatile sequential data buffer with concurrent write capability via dual SRAM buffers. Use Value: Eliminates data loss during flash page reprogramming by accepting new samples into one buffer while the other writes to main memory. |
Use Scenario: Storing compressed ultrasound frame buffers prior to DICOM export or on-device AI inference. IC Role / Device Role / Timing Role: High-bandwidth, low-latency external memory for burst-mode image capture and retrieval. Use Value: Quad-Output Read at 85 MHz delivers >34 MB/s throughput - sufficient for real-time transfer of 12-bit 1024×768 frames at 30 fps. |
| Firmware-Upgradeable PLC | Secure Bootloader Storage |
|
Use Scenario: Field-upgradable ladder logic and motion control firmware stored in flash, updated over CAN or Ethernet. IC Role / Device Role / Timing Role: Reliable, sector-protected code storage with atomic page/block erase and suspend-capable programming. Use Value: Sector Erase (128 kB) isolates update partitions; Program Suspend ensures deterministic I/O response during background firmware patching. |
Use Scenario: Immutable storage of cryptographic keys and verified bootloader images in safety-critical avionics or automotive ECUs. IC Role / Device Role / Timing Role: Tamper-resistant, one-time programmable security register with permanent sector lockdown. Use Value: 64-byte factory UID + 64-byte user OTP space enables unique device identity and signed image validation; lockdown prevents runtime modification. |
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 program/erase suspend | Lacks concurrent buffer operation and suspend capability - unsuitable for continuous streaming or real-time interrupt handling | Select when cost sensitivity outweighs performance/security needs and legacy SPI-only interface suffices |
| Macronix MX25L1633F | 16 Mbit SPI NOR Flash; supports Quad I/O and QPI; no SRAM buffers; no RapidS™; no program/erase suspend; 104 MHz max | Offers higher clock rate than AT45DQ161-SHFHD-T but lacks dual-buffer concurrency and suspend/resume - limits deterministic behavior in mixed workloads | Prefer for high-throughput read-heavy applications where buffer interleaving is unnecessary and suspend is not required |
Compared with W25Q16JW and MX25L1633F, the AT45DQ161-SHFHD-T uniquely delivers simultaneous buffer fill and main memory programming, RapidS™ timing, and program/erase suspend - making it the only choice among the three for deterministic real-time data logging and secure firmware update workflows.
Availability
AT45DQ161-SHFHD-T is available at Aetrix Electronics and suitable for industrial data loggers, medical imaging subsystems, firmware-upgradeable PLCs, and secure bootloader storage requiring stable component supply across extended product lifecycles.
Supply support for AT45DQ161-SHFHD-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-SHFHD-T belongs to Renesas' DataFlash® family, engineered specifically for high-reliability, high-throughput sequential data storage in resource-constrained embedded systems with real-time constraints.
FAQ
What is the default page size configuration for AT45DQ161-SHFHD-T?
The AT45DQ161-SHFHD-T is factory pre-configured to use 528-byte pages by default, matching the legacy DataFlash page format. However, it supports user reconfiguration to 512-byte (binary-aligned) pages via the Buffer and Page Size Configuration command (0x3D), enabling compatibility with systems optimized for power-of-two addressing. Both configurations are fully supported in all operating modes of the AT45DQ161-SHFHD-T.
Does AT45DQ161-SHFHD-T support true concurrent read and write operations?
Yes - the AT45DQ161-SHFHD-T supports true concurrency through its dual independent SRAM buffers. While one buffer is transferring data to main memory (Buffer-to-Main Memory Page Program), the other buffer can simultaneously accept new data via Buffer Write commands. This eliminates write stalls and enables uninterrupted data streaming, a capability confirmed in Section 5.1 and Figure 36 of the AT45DQ161-SHFHD-T datasheet.
How does the RapidS™ mode improve performance in AT45DQ161-SHFHD-T?
RapidS™ mode in the AT45DQ161-SHFHD-T reduces clock-to-output delay (tV) to ≤6 ns and enables reliable 85 MHz operation under specified conditions - significantly exceeding standard SPI timing margins. This allows faster read cycles and tighter command turnaround, directly improving throughput in high-speed applications like firmware bootloading and real-time image buffering, as validated in AC Characteristics Table 19.4 of the AT45DQ161-SHFHD-T datasheet.
Can AT45DQ161-SHFHD-T be used for EEPROM emulation?
Yes - the AT45DQ161-SHFHD-T supports EEPROM emulation through its flexible byte/page programming and buffer-based rewrite capabilities. By using Main Memory Byte/Page Program commands (0x82/0x84) combined with internal buffer transfers and Auto Page Rewrite (0x53), systems can achieve bit- or byte-level alterability. This is explicitly documented in Section 7.7 and Figure 59 of the AT45DQ161-SHFHD-T datasheet.
What security mechanisms does AT45DQ161-SHFHD-T provide beyond standard write protection?
Beyond WP-pin hardware protection, the AT45DQ161-SHFHD-T provides sector lockdown (permanent read-only enforcement), 128-byte OTP Security Register (64 B factory UID + 64 B user space), and software/hardware-controlled sector protection registers. These features are implemented in dedicated command sets (e.g., 0x3A for lockdown, 0x77 for security register read) and are validated in Sections 8–9 and Tables 14–19 of the AT45DQ161-SHFHD-T datasheet.
AT45DQ161-SHFHD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- 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 ~ 105°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT45DQ161-SHFHD-T FAQ
1.How can I place an order for AT45DQ161-SHFHD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-SHFHD-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-SHFHD-T reliable?
The price and inventory of AT45DQ161-SHFHD-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-SHFHD-T is usually 5 days.
3.What payment methods are accepted for AT45DQ161-SHFHD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-SHFHD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-SHFHD-T?
AT45DQ161-SHFHD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-SHFHD-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-SHFHD-T?
For technical support, including AT45DQ161-SHFHD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-SHFHD-T requirements.
6.How does Aetrix verify that AT45DQ161-SHFHD-T is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-SHFHD-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-SHFHD-T meets industry standards.
7.What is the process for return or replacement of AT45DQ161-SHFHD-T?
All AT45DQ161-SHFHD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-SHFHD-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-SHFHD-T part is unused and in its original packaging.
Return procedure for AT45DQ161-SHFHD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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