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Renesas AT45DQ161-SSHFHD-T
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- Part No.:
- AT45DQ161-SSHFHD-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT45DQ161-SSHFHD-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,995
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Product details
Overview
AT45DQ161-SSHFHD-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 ultra-low 500 nA deep power-down current. It serves as nonvolatile program/data storage in embedded controllers requiring high-speed sequential access and concurrent buffer operation.
For engineers reviewing the AT45DQ161-SSHFHD-T datasheet, AT45DQ161-SSHFHD-T pinout, AT45DQ161-SSHFHD-T application, or AT45DQ161-SSHFHD-T equivalent, key selection criteria include SPI mode 0/3 compatibility, dual/quad I/O timing compliance, page-size configuration flexibility, sector lockdown security, and industrial temperature operation.
Technical Context
The AT45DQ161-SSHFHD-T implements a two-buffer architecture with independent 512/528-byte SRAM buffers enabling simultaneous data reception and main memory reprogramming. Its RapidS™ mode supports accelerated read/write sequences with reduced command overhead.
It supports four distinct erase granularities-page (512/528 B), block (4 kB), sector (128 kB), and chip (16 Mbit)-with suspend/resume capability during active program/erase operations. Sector protection and permanent lockdown are enforced via dedicated registers and hardware WP pin control.
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 |
| Interface Speed | 85 MHz max for SPI, Dual-I/O, and Quad-I/O modes; enables >30 MB/s effective throughput |
| Page Size | User-configurable to 512 bytes (binary-aligned) or 528 bytes (DataFlash standard); factory pre-set option |
| Power Consumption | 500 nA ultra-deep power-down (typical); 25 µA standby; 11 mA active read at 20 MHz |
| Data Retention & Endurance | 20 years retention; 100,000 program/erase cycles per page (50,000 for extended temp option) |
| Operating Voltage | 2.3 V to 3.6 V single supply; compatible with 2.5 V and 3.3 V system rails |
| Temperature Range | Industrial grade: –40°C to +85°C; extended temp option available |
Pinout & Package
AT45DQ161-SSHFHD-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 asserted before SCK edge for valid operation |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports up to 85 MHz; phase/polarity configurable for Mode 0/3 |
| 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; supports single/dual/quad output modes with tV ≤ 6 ns clock-to-output |
| WP | Write Protect | Hardware-enabled sector protection lock; low = protection active; tied high or controlled by host GPIO |
| RESET | Reset Input | Active-low hardware reset; initiates internal state machine recovery without power cycle |
| VCC | Supply Voltage | 2.3–3.6 V primary power rail; decoupling capacitor required per datasheet layout guidelines |
| GND | Ground | Reference return path for VCC and all I/O; separate analog/digital ground not required |
Key Features
| Feature | Design Value |
|---|---|
| Dual/Quad-I/O Read & Write | Enables 2× or 4× bandwidth over standard SPI; reduces instruction latency for burst streaming applications |
| Two Independent SRAM Buffers | Allows overlapping receive-to-buffer and buffer-to-memory programming; eliminates write stalls in continuous data logging |
| Program/Erase Suspend & Resume | Permits urgent read access during long erase operations; critical for real-time firmware update scenarios |
| 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 overwrite of firmware partitions |
| RapidS™ Operation | Reduces command overhead and improves effective throughput in high-frequency SPI systems without protocol changes |
Applications
| Firmware Storage | Industrial Data Logging |
|---|---|
Use Scenario: Storing boot code, application firmware, and configuration tables in microcontroller-based edge devices. IC Role / Device Role / Timing Role: Nonvolatile program memory accessed via SPI during cold start and runtime updates. Use Value: Page-erase granularity and sector lockdown prevent corruption of critical bootloader sections during field upgrades. |
Use Scenario: Continuous acquisition of sensor data (e.g., temperature, pressure) in PLCs and environmental monitors. IC Role / Device Role / Timing Role: High-throughput sequential write buffer supporting interleaved capture and flash programming. Use Value: Dual-input buffer write and 85 MHz interface sustain >25 MB/s sustained write rates under real-time constraints. |
| Secure Boot Configuration | Medical Device Parameter Storage |
Use Scenario: Storing cryptographic keys, digital signatures, and immutable device identity in Class II medical electronics. IC Role / Device Role / Timing Role: Secure nonvolatile register holding root-of-trust credentials verified at power-on. Use Value: 128-byte OTP register with factory-programmed unique ID ensures tamper-resistant device authentication. |
Use Scenario: Retaining calibrated sensor offsets, usage history, and regulatory audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Long-term data archive with guaranteed 20-year retention and 100K-cycle endurance. Use Value: Industrial temperature rating and sector protection ensure data integrity across clinical deployment lifecycles. |
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™ | Lacks concurrent buffer operation and rapid sequential access; suited for simpler code storage only | Select when buffer interleaving and ultra-fast streaming are unnecessary; lower cost for basic firmware storage |
| Macronix MX25L1633F | 16 Mbit SPI NOR Flash; supports Quad-I/O only (no Dual-I/O); no SRAM buffers; no sector lockdown or OTP register | No hardware-enforced read-only sectors or factory-unique ID; limited security feature set | Choose when Quad-I/O speed suffices and security features like lockdown or OTP are not required |
Compared with W25Q16JW and MX25L1633F, the AT45DQ161-SSHFHD-T uniquely delivers concurrent buffer operation, programmable page sizing, hardware sector lockdown, and factory-unique OTP storage - making it optimal for secure, high-throughput embedded data and firmware applications where reliability and real-time performance are critical.
Availability
AT45DQ161-SSHFHD-T is available at Aetrix Electronics and suitable for firmware storage, industrial data logging, secure boot configuration, and medical device parameter storage requiring stable component supply and long-term lifecycle support.
Supply support for AT45DQ161-SSHFHD-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-SSHFHD-T belongs to Renesas' DataFlash family, engineered specifically for high-reliability, high-speed sequential access in resource-constrained embedded systems requiring concurrent operation and robust data security.
FAQ
What is the default page size configuration for AT45DQ161-SSHFHD-T?
The AT45DQ161-SSHFHD-T ships with 528-byte pages as the default configuration, aligned with the legacy DataFlash format. However, it can be factory ordered pre-configured for 512-byte pages (binary-aligned), and the page size is fixed per device at shipment - not runtime reconfigurable. This setting determines addressing structure and command compatibility for page-level operations in the AT45DQ161-SSHFHD-T.
Does AT45DQ161-SSHFHD-T support true Quad-SPI (QSPI) protocol with 4-line address/command phase?
No. The AT45DQ161-SSHFHD-T supports Quad-output and Quad-input data transfer modes but uses standard SPI command and address phases (single-bit). Addressing remains serial (1-bit), while only data I/O occurs on four lines during Quad-I/O read/write. It does not implement full QSPI with quad command/address phases like some newer NOR Flash devices.
How does the AT45DQ161-SSHFHD-T handle power loss during a page program operation?
The AT45DQ161-SSHFHD-T incorporates automatic write abort and status flag reporting. If power drops mid-program, the internal state machine halts, and the Status Register indicates "Erase/Program Error" upon next power-up. No partial writes occur - the affected page remains unaltered or enters a known invalid state, ensuring data integrity without external error correction in the AT45DQ161-SSHFHD-T.
Can the 128-byte Security Register in AT45DQ161-SSHFHD-T be erased or rewritten after initial programming?
The 64-byte factory-programmed section of the AT45DQ161-SSHFHD-T Security Register is permanently immutable. The 64-byte user-programmable section can be written once per byte - subsequent writes to an already-programmed byte have no effect. Erasure is not supported; the register is one-time programmable (OTP) by design to ensure cryptographic key and identity persistence in the AT45DQ161-SSHFHD-T.
Is AT45DQ161-SSHFHD-T pin-compatible with earlier AT45DB series devices?
No. While functionally similar, the AT45DQ161-SSHFHD-T introduces Dual-I/O and Quad-I/O support, RapidS™ mode, and updated command set extensions not present in AT45DB devices. Pinout is identical for SOIC packages, but the DFN variant (SSHFHD-T) has different thermal pad and footprint requirements. Firmware and driver updates are required to leverage new features in the AT45DQ161-SSHFHD-T.
AT45DQ161-SSHFHD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SSHFHD-T FAQ
1.How can I place an order for AT45DQ161-SSHFHD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-SSHFHD-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-SSHFHD-T reliable?
The price and inventory of AT45DQ161-SSHFHD-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-SSHFHD-T is usually 5 days.
3.What payment methods are accepted for AT45DQ161-SSHFHD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-SSHFHD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-SSHFHD-T?
AT45DQ161-SSHFHD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-SSHFHD-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-SSHFHD-T?
For technical support, including AT45DQ161-SSHFHD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-SSHFHD-T requirements.
6.How does Aetrix verify that AT45DQ161-SSHFHD-T is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-SSHFHD-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-SSHFHD-T meets industry standards.
7.What is the process for return or replacement of AT45DQ161-SSHFHD-T?
All AT45DQ161-SSHFHD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-SSHFHD-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-SSHFHD-T part is unused and in its original packaging.
Return procedure for AT45DQ161-SSHFHD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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