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Renesas AT45DQ161-SSHF2B-T
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- Part No.:
- AT45DQ161-SSHF2B-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT45DQ161-SSHF2B-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,274
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Product details
Overview
AT45DQ161-SSHF2B-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 microcontroller systems requiring high-speed sequential access and concurrent buffer operations.
For engineers reviewing the AT45DQ161-SSHF2B-T datasheet, AT45DQ161-SSHF2B-T pinout, AT45DQ161-SSHF2B-T application, or AT45DQ161-SSHF2B-T equivalent, key selection criteria include SPI mode 0/3 compatibility, RapidS™ operation, dual/quad I/O read/write capability, SRAM buffer interleaving for continuous streaming, and sector-level hardware/software protection for firmware integrity.
Technical Context
The AT45DQ161-SSHF2B-T implements a two-buffer architecture with independent 512/528-byte SRAM buffers enabling simultaneous data reception and main memory reprogramming. Its command set supports byte/page programming, buffer-to-main-memory transfer, auto page rewrite, and suspend/resume during erase/program cycles.
It features dual-mode sector protection (software/hardware), 128-byte OTP security register with factory-unique 64-byte ID, and configurable Deep/Ultra-Deep Power-Down modes. The device complies with JEDEC standard Manufacturer and Device ID read (9Fh opcode) and supports software reset via 99h command.
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 | SPI-compatible, supports modes 0 and 3; Dual-I/O and Quad-I/O for accelerated throughput |
| Max Clock Frequency | 85 MHz for SPI, Dual-I/O, and Quad-I/O operations - enables >30 MB/s effective read bandwidth |
| Page Size | User-configurable: 512 bytes (binary-aligned) or 528 bytes (DataFlash default); factory pre-configurable |
| Power-Down Current | 500 nA typical Ultra-Deep Power-Down; 3 µA typical Deep Power-Down - critical for battery-powered systems |
| Endurance & Retention | 100,000 program/erase cycles per page; 20-year data retention at industrial temperature range |
| Operating Voltage | 2.3 V to 3.6 V single supply - compatible with 2.5 V and 3.3 V logic domains |
Pinout & Package
AT45DQ161-SSHF2B-T uses an 8-pin 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/address/data transfers; controls device activation timing |
| SCK | Serial Clock | Input clock synchronizing all SPI operations; supports up to 85 MHz for high-speed reads/writes |
| MOSI | Master Out, Slave In | Serial input for commands, addresses, and write data; supports single/dual/quad-input buffer writes |
| MISO | Master In, Slave Out | Serial output for read data and status/config registers; supports single/dual/quad-output reads |
| WP | Write Protect | Hardware-enabled sector lockdown; when asserted, prevents modification of protected sectors |
| RESET | Reset Input | Active-low hardware reset; initiates internal state machine reset and clears status flags |
| VCC | Power Supply | 2.3–3.6 V supply; powers core logic, memory array, and I/O buffers |
| GND | Ground | Reference return path for all internal circuits and I/O signals |
Key Features
| Feature | Design Value |
|---|---|
| RapidS™ Operation | Enables faster command execution and reduced latency for high-frequency SPI applications |
| Dual/Quad I/O Read & Write | Doubles/quadruples effective data throughput versus standard SPI - critical for real-time audio/video buffering |
| Two Independent SRAM Buffers | Allows pipelined operation: receive new data into one buffer while programming the other into flash |
| Program/Erase Suspend & Resume | Permits interrupting long erase/program operations to service time-critical host requests |
| 128-byte OTP Security Register | Stores unique factory ID + user-programmable keys; enables secure boot and firmware authentication |
| Configurable Page Size | 512-byte (binary) or 528-byte (legacy DataFlash) mode - selectable at order time for legacy or optimized alignment |
Applications
| Firmware Storage | Real-Time Data Logging |
|---|---|
|
Use Scenario: Storing boot code, application firmware, and configuration tables for microcontrollers in industrial PLCs. IC Role / Device Role / Timing Role: Nonvolatile program memory accessed via SPI during cold start and runtime updates. Use Value: 85 MHz Quad-I/O read speed reduces boot time; sector lockdown prevents accidental overwrite of critical firmware sections. |
Use Scenario: Continuous capture of sensor readings (temperature, pressure, vibration) in edge IoT gateways. IC Role / Device Role / Timing Role: High-throughput sequential write buffer supporting uninterrupted streaming without host CPU blocking. Use Value: Dual-input buffer write + page program suspend allows background logging while servicing network interrupts. |
| Secure Boot Authentication | Audio/Video Buffering |
|
Use Scenario: Verifying digital signatures of firmware images before execution in medical devices. IC Role / Device Role / Timing Role: Secure storage of cryptographic keys and signed hash values in OTP security register. Use Value: Factory-programmed 64-byte unique ID + user-programmable 64-byte key space enables hardware-rooted trust chain. |
Use Scenario: Storing compressed voice prompts or video thumbnails in smart home hubs. IC Role / Device Role / Timing Role: Low-latency sequential read memory supporting burst-mode playback from SPI master. Use Value: 6 ns clock-to-output time (tV) and RapidS™ mode ensure deterministic audio frame delivery with minimal jitter. |
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 SRAM buffers; no Dual/Quad-I/O; 133 MHz max clock; no RapidS™ | Lacks concurrent buffer operation and high-speed I/O modes; suited for simpler code storage only | Select if cost-sensitive design requires basic SPI flash without streaming or low-power deep sleep features |
| Macronix MX25L1633F | 16 Mbit SPI NOR Flash; no integrated SRAM buffers; supports Quad-I/O only; 104 MHz max clock | No buffer interleaving or program/erase suspend; lacks OTP security register and sector lockdown | Choose when Quad-I/O speed is needed but concurrent streaming and hardware security are not required |
Compared with W25Q16JW and MX25L1633F, the AT45DQ161-SSHF2B-T uniquely delivers simultaneous buffer operation, RapidS™ acceleration, ultra-low 500 nA power-down, and hardware-enforced sector lockdown - making it optimal for streaming-aware, security-critical, and battery-constrained embedded systems.
Availability
AT45DQ161-SSHF2B-T is available at Aetrix Electronics and suitable for firmware storage, real-time data logging, secure boot authentication, and audio/video buffering requiring stable component supply across industrial, medical, and IoT product lifecycles.
Supply support for AT45DQ161-SSHF2B-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-SSHF2B-T belongs to Renesas' DataFlash family, designed specifically for high-reliability, high-speed sequential access in resource-constrained embedded systems requiring concurrent operation and robust data protection.
FAQ
What is the operating voltage range for the AT45DQ161-SSHF2B-T?
The AT45DQ161-SSHF2B-T operates from 2.3 V to 3.6 V over the full industrial temperature range. This single-supply range ensures compatibility with both 2.5 V and 3.3 V system rails without level-shifting, and its 2.3 V minimum enables extended battery life in portable designs where voltage droop occurs.
Does the AT45DQ161-SSHF2B-T support true Quad-I/O operation?
Yes, the AT45DQ161-SSHF2B-T supports true Quad-I/O for both read (6Bh opcode) and write (38h opcode) operations, achieving up to 4× data throughput versus standard SPI. Quad mode must be enabled via the Configuration Register (01h) and confirmed by reading status bit QE=1 before use.
How does the dual-SRAM-buffer architecture improve system performance in the AT45DQ161-SSHF2B-T?
The AT45DQ161-SSHF2B-T's two independent 512/528-byte SRAM buffers allow overlapping operations: while one buffer is being written to main memory, the other accepts incoming data via SPI. This eliminates host wait states during page programming, enabling continuous data streaming in applications like sensor logging or audio buffering.
Can the AT45DQ161-SSHF2B-T be used for EEPROM emulation?
Yes, the AT45DQ161-SSHF2B-T supports EEPROM emulation through its flexible byte/page programming and auto page rewrite commands. By managing small data units in dedicated pages and using buffer compare/transfer functions, users can implement byte-alterable nonvolatile storage without external wear-leveling controllers.
What packaging option does the AT45DQ161-SSHF2B-T use?
The AT45DQ161-SSHF2B-T uses an 8-pad Ultra-thin DFN package measuring 5 mm × 6 mm × 0.6 mm. This compact, lead-free, RoHS-compliant footprint supports high-density PCB layouts and thermal efficiency in space-constrained embedded modules.
AT45DQ161-SSHF2B-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 ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT45DQ161-SSHF2B-T FAQ
1.How can I place an order for AT45DQ161-SSHF2B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-SSHF2B-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-SSHF2B-T reliable?
The price and inventory of AT45DQ161-SSHF2B-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-SSHF2B-T is usually 5 days.
3.What payment methods are accepted for AT45DQ161-SSHF2B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-SSHF2B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-SSHF2B-T?
AT45DQ161-SSHF2B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-SSHF2B-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-SSHF2B-T?
For technical support, including AT45DQ161-SSHF2B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-SSHF2B-T requirements.
6.How does Aetrix verify that AT45DQ161-SSHF2B-T is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-SSHF2B-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-SSHF2B-T meets industry standards.
7.What is the process for return or replacement of AT45DQ161-SSHF2B-T?
All AT45DQ161-SSHF2B-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-SSHF2B-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-SSHF2B-T part is unused and in its original packaging.
Return procedure for AT45DQ161-SSHF2B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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