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Renesas AT45DQ161-SSHFHB-T
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- Part No.:
- AT45DQ161-SSHFHB-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT45DQ161-SSHFHB-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,847
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Product details
Overview
AT45DQ161-SSHFHB-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 embedded voice, firmware storage, and image buffering systems.
For engineers reviewing the AT45DQ161-SSHFHB-T datasheet, AT45DQ161-SSHFHB-T pinout, AT45DQ161-SSHFHB-T application, or AT45DQ161-SSHFHB-T equivalent, key selection criteria include SPI mode 0/3 compatibility, RapidS™ operation, ultra-low deep power-down current (500 nA), sector lockdown security, and DFN-8 (5 × 6 × 0.6 mm) packaging for space-constrained industrial controllers.
Technical Context
The AT45DQ161-SSHFHB-T implements a dual-buffered architecture where two independent SRAM buffers (each 512/528 bytes) decouple host data streaming from main memory programming. This enables true background write operations without halting read access or interrupting incoming data flow.
It supports four distinct I/O modes-standard SPI, Dual-I/O, Quad-I/O, and RapidS™-with dedicated opcodes for each. Clock-to-output time is specified at ≤6 ns, and all erase/program operations (page, block, sector, chip) are fully suspend/resume capable for real-time system responsiveness.
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 | Up to 85 MHz for SPI, Dual-I/O, and Quad-I/O modes - enables >30 MB/s effective throughput in Quad-I/O |
| 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 at 20 MHz |
| Endurance & retention | 100,000 program/erase cycles per page; 20-year data retention at industrial temperature range |
| Security features | 128-byte OTP security register (64-byte factory UID + 64-byte user-programmable); per-sector lockdown |
| 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-SSHFHB-T uses an 8-pad Ultra-thin DFN package (5 mm × 6 mm × 0.6 mm), RoHS-compliant, with wettable flank leads for automated optical inspection (AOI). The package supports high-density PCB layouts and thermal performance suitable for extended industrial operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command latching; must be deasserted between commands to reset internal state machine |
| 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 via opcode selection |
| MISO | Master In Slave Out | Serial data output for reads; supports single/dual/quad output modes; tV ≤ 6 ns ensures timing margin at 85 MHz |
| WP | Write Protect | Hardware sector protection control; low = enables sector lockdown and configuration register writes |
| RESET | Hardware Reset | Active-low asynchronous reset; returns device to power-on state without requiring VCC ramp cycle |
| VCC | Supply Voltage | 2.3–3.6 V primary power; decoupling capacitor required within 5 mm of pin per datasheet layout guidelines |
| GND | Ground | Digital ground reference; separate analog ground not required - single ground plane sufficient |
Key Features
| Feature | Design Value |
|---|---|
| RapidS™ operation | Enables faster command execution and reduced latency for high-frequency SPI bursts without changing clock rate |
| Dual- and Quad-I/O support | Doubles or quadruples effective data bandwidth versus standard SPI; requires explicit enable/disable commands |
| Buffer-to-main-memory page program | Allows atomic page writes with built-in erase - eliminates need for separate erase command in most firmware update flows |
| Program/Erase Suspend & Resume | Permits immediate servicing of time-critical interrupts during long erase/write operations without data loss or corruption |
| Individual sector lockdown | Makes any 128 kB sector permanently read-only after freeze command - prevents accidental or malicious overwrite of boot code |
| OTP Security Register | Provides tamper-resistant storage for cryptographic keys or device identity; factory UID enables secure provisioning |
Applications
| Firmware Storage | Industrial Data Logging |
|---|---|
|
Use Scenario: Storing boot loader, FPGA configuration bitstreams, and application firmware in PLCs and motor drives. IC Role / Device Role / Timing Role: Non-volatile program storage with fast Quad-I/O read access and hardware write protection. Use Value: Sector lockdown prevents unauthorized firmware modification; 85 MHz Quad-I/O reduces boot time by >40% vs. legacy SPI Flash. |
Use Scenario: Continuous buffering of sensor readings (temperature, pressure, vibration) in edge gateways with intermittent cloud upload. IC Role / Device Role / Timing Role: High-throughput sequential write buffer with concurrent read capability via dual SRAM buffers. Use Value: Interleaved buffer writes sustain >2.5 MB/s sustained write rate while allowing real-time status reads from main memory. |
| Digital Voice Recording | Medical Imaging Buffer |
|
Use Scenario: Voice memo recording in portable diagnostic tools with battery life constraints. IC Role / Device Role / Timing Role: Low-power serial Flash with ultra-deep power-down (500 nA) between recording segments. Use Value: Enables >12-month shelf life on coin-cell battery; RapidS™ mode accelerates playback startup latency to <10 ms. |
Use Scenario: Temporary storage of ultrasound or endoscopic image frames before compression and transmission. IC Role / Device Role / Timing Role: High-speed, reliable intermediate frame buffer supporting burst capture at 30+ fps. Use Value: Dual-input buffer write achieves 16.5 MB/s write throughput; page erase granularity minimizes write amplification. |
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 or RapidS™), no SRAM buffers, 100k endurance | Lacks concurrent buffer operation and RapidS™ acceleration; simpler command set but no background write capability | Choose for cost-sensitive designs where buffer interleaving and ultra-low power are non-critical. |
| Macronix MX25L1633F | 16 Mbit, 2.3–3.6 V, standard SPI + Quad SPI, no Dual-I/O, no SRAM buffers, 100k endurance, 2.5 V min | No dual-buffer architecture; no program/erase suspend; lacks sector lockdown and OTP security register | Prefer when legacy SPI compatibility and broad distributor availability outweigh advanced security and concurrency needs. |
Compared with W25Q16JW and MX25L1633F, the AT45DQ161-SSHFHB-T uniquely delivers simultaneous data ingestion and memory programming via dual SRAM buffers, hardware-enforced sector lockdown, and RapidS™-enhanced throughput - critical for real-time embedded systems requiring deterministic latency and secure firmware integrity.
Availability
AT45DQ161-SSHFHB-T is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and battery-powered edge devices requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT45DQ161-SSHFHB-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 markets.
The AT45DQ161 belongs to Renesas' DataFlash® family, engineered specifically for high-reliability, high-throughput sequential-access storage in resource-constrained embedded systems demanding concurrent operation and robust security.
FAQ
What is the default page size configuration for AT45DQ161-SSHFHB-T?
The AT45DQ161-SSHFHB-T is factory-configured for 528-byte pages (standard DataFlash format) unless otherwise specified at order time. Page size is fixed per unit and cannot be changed in-system; 512-byte binary-aligned mode requires ordering the -SSHFHA-T variant.
Does AT45DQ161-SSHFHB-T support true Quad-I/O operation out of reset?
No. AT45DQ161-SSHFHB-T powers up in standard SPI mode. Quad-I/O must be explicitly enabled using the 0x35 command (Quad Enable) and verified via the Configuration Register. The device retains this setting across power cycles if VCC remains above 2.3 V during reset.
How does the dual-SRAM buffer architecture improve system-level throughput in AT45DQ161-SSHFHB-T?
The AT45DQ161-SSHFHB-T's two independent 512/528-byte buffers allow one buffer to accept new data via SPI while the other transfers content to main memory. This overlapping eliminates write stalls, enabling continuous streaming at up to 16.5 MB/s in Quad-I/O mode without CPU intervention.
Can AT45DQ161-SSHFHB-T be used for EEPROM emulation, and what is required?
Yes. AT45DQ161-SSHFHB-T supports EEPROM emulation via software-managed wear leveling across pages. Its 100,000-cycle endurance, page-program flexibility (1–528 bytes), and buffer-to-main-memory transfer commands enable byte-alterable storage with predictable latency and no external components.
What is the purpose of the 128-byte OTP Security Register in AT45DQ161-SSHFHB-T?
The 128-byte OTP Security Register in AT45DQ161-SSHFHB-T contains 64 bytes of factory-programmed unique identifier and 64 bytes user-programmable for keys, certificates, or calibration data. Once written, OTP bytes are permanently locked - providing immutable device identity and secure boot root-of-trust.
AT45DQ161-SSHFHB-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:
- 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 ~ 105°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT45DQ161-SSHFHB-T FAQ
1.How can I place an order for AT45DQ161-SSHFHB-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-SSHFHB-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-SSHFHB-T reliable?
The price and inventory of AT45DQ161-SSHFHB-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-SSHFHB-T is usually 5 days.
3.What payment methods are accepted for AT45DQ161-SSHFHB-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-SSHFHB-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-SSHFHB-T?
AT45DQ161-SSHFHB-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-SSHFHB-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-SSHFHB-T?
For technical support, including AT45DQ161-SSHFHB-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-SSHFHB-T requirements.
6.How does Aetrix verify that AT45DQ161-SSHFHB-T is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-SSHFHB-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-SSHFHB-T meets industry standards.
7.What is the process for return or replacement of AT45DQ161-SSHFHB-T?
All AT45DQ161-SSHFHB-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-SSHFHB-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-SSHFHB-T part is unused and in its original packaging.
Return procedure for AT45DQ161-SSHFHB-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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