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Renesas AT25DQ161-SSH-T
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- Part No.:
- AT25DQ161-SSH-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25DQ161-SSH-T.pdf
- Description:
- IC FLASH 16MBIT SPI 100MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,521
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Product details
Overview
AT25DQ161-SSH-T from Renesas Electronics is a 16-Mbit serial Flash 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 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 AT25DQ161-SSH-T datasheet, AT25DQ161-SSH-T pinout, AT25DQ161-SSH-T application, or AT25DQ161-SSH-T equivalent, key selection criteria include SPI mode 0/3 compatibility, RapidS™ acceleration, dual SRAM buffers for interleaved write, sector lockdown security, and industrial temperature support.
Technical Context
The AT25DQ161-SSH-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-memory transfer, and multi-level erase (page/4 kB block/128 kB sector/chip).
It integrates hardware/software protection including individual sector protection, permanent sector lockdown, and a 128-byte OTP security register with 64-byte factory-unique ID. Deep power-down and ultra-deep power-down modes provide 3 µA and 500 nA typical standby currents respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (2,097,152 bytes), organized as 4,096 pages × 512 or 528 bytes |
| Interface | SPI-compatible, supports modes 0 and 3; Dual-I/O and Quad-I/O read/write operations |
| Max Clock Frequency | 85 MHz for SPI, Dual-I/O, and Quad-I/O - enables high-throughput streaming in real-time systems |
| Page Size | User-configurable to 512 bytes (binary) or 528 bytes (DataFlash standard); factory pre-set option available |
| Power Consumption | 500 nA ultra-deep power-down (typical); 25 µA standby (typical); 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 logic domains |
Pinout & Package
AT25DQ161-SSH-T is supplied in an 8-lead 150-mil narrow SOIC package (JEDEC MS-012AA), with lead finish Pb/Halide-free and RoHS compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS# | Chip Select | Active-low enable for SPI communication; controls device entry into standby mode when deasserted |
| SI | Serial Input | Input for command, address, and data during write/program operations (MOSI-equivalent) |
| SO | Serial Output | Output for status, configuration, and memory data during read operations (MISO-equivalent) |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports up to 85 MHz for high-speed throughput |
| WP# | Write Protect | Hardware-enabled sector protection control; low = lock sectors defined in protection register |
| RESET# | Reset Input | Active-low hardware reset; initiates internal reset sequence and clears status register |
| VCC | Power Supply | 2.3–3.6 V primary supply; powers core logic, memory array, and I/O buffers |
| GND | Ground | Reference return path for VCC and all signal terminals; critical for noise immunity in high-speed SPI |
Key Features
| Feature | Design Value |
|---|---|
| RapidS™ Operation | Enables faster command execution and reduced latency for continuous read/write sequences without inter-byte delays |
| Dual SRAM Buffers | Two independent 512/528-byte buffers allow full overlap of incoming data capture and background memory programming |
| Flexible Erase Granularity | Page (512/528 B), block (4 kB), sector (128 kB), and chip-level erase options optimize wear leveling and firmware update efficiency |
| OTP Security Register | 128-byte one-time programmable register with 64-byte factory-unique ID and 64-byte user space for secure boot keys or calibration data |
| Sector Lockdown | Hardware-permanent read-only locking of any memory sector after programming - prevents accidental or malicious overwrite |
Applications
| Firmware Storage | Industrial Data Logging |
|---|---|
Use Scenario: Storing boot code, FPGA configuration bitstreams, and field-upgradable firmware images in PLCs and motor drives. IC Role / Device Role / Timing Role: Nonvolatile program storage with rapid sequential read and fast page reprogramming during OTA updates. Use Value: 85 MHz Quad-I/O read speed reduces boot time; dual-buffer write enables zero-downtime firmware patching. |
Use Scenario: Capturing sensor readings, event timestamps, and alarm history in environmental monitoring gateways operating unattended for months. IC Role / Device Role / Timing Role: High-reliability data sink supporting cyclic logging with sector-lockdown protection against corruption. Use Value: 20-year data retention and 100K endurance ensure long-term integrity; ultra-deep power-down extends battery life. |
| Medical Device Configuration | Automotive Telematics Boot Memory |
Use Scenario: Storing calibrated sensor offsets, patient-specific therapy parameters, and audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter storage with OTP ID binding and sector lockdown for regulatory compliance. Use Value: Factory-programmed 64-byte unique ID enables device traceability; lockdown prevents unauthorized parameter modification. |
Use Scenario: Hosting bootloader and secure boot manifest in automotive infotainment ECUs requiring ASIL-B-aware nonvolatile storage. IC Role / Device Role / Timing Role: Trusted boot memory with hardware write protection and JEDEC-standard manufacturer/device ID verification. Use Value: WP#-controlled sector protection and status register monitoring support safe boot validation; industrial temp range ensures reliability under hood conditions. |
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 supply, no dual-SRAM buffers, no RapidS™, 133 MHz Quad SPI, no sector lockdown | Lacks concurrent buffer operation and permanent sector lockdown; suited for cost-sensitive, non-security-critical designs | Select when higher clock speed is prioritized over concurrent write capability and hardware security features |
| Macronix MX25L1633F | 16 Mbit, 2.3–3.6 V, no dual buffers, no RapidS™, 104 MHz Quad SPI, software-only sector protection | No hardware sector lockdown or OTP security register; relies on firmware for protection enforcement | Choose for legacy SPI compatibility where buffer interleaving and hardware lockdown are not required |
Compared with Winbond W25Q16JW and Macronix MX25L1633F, the AT25DQ161-SSH-T uniquely delivers concurrent buffer operation, RapidS™ acceleration, and hardware-enforced sector lockdown - making it optimal for safety-critical, high-throughput, and secure-boot applications where data integrity and zero-downtime updates are mandatory.
Availability
AT25DQ161-SSH-T is available at Aetrix Electronics and suitable for firmware storage, industrial data logging, medical device configuration, and automotive telematics requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT25DQ161-SSH-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 AT25DQ161-SSH-T belongs to Renesas' DataFlash® family, engineered specifically for high-speed, secure, and reliable serial program and data storage in resource-constrained embedded systems.
FAQ
What is the page size configuration flexibility of the AT25DQ161-SSH-T?
The AT25DQ161-SSH-T supports user-selectable page sizes of either 512 bytes (binary-aligned) or 528 bytes (DataFlash standard), configured via command or factory pre-set at order time. This allows optimization for legacy system compatibility or efficient binary-sector mapping. The AT25DQ161-SSH-T retains both configurations in its command set and maintains full functionality regardless of selected mode.
Does the AT25DQ161-SSH-T support true concurrent read-while-write operation?
Yes - the AT25DQ161-SSH-T uses two independent 512/528-byte SRAM buffers to enable true concurrent operation: while one buffer receives new data via SPI, the other can simultaneously program a page into main memory. This eliminates write stalls and sustains continuous data streams, a capability confirmed in the AT25DQ161-SSH-T datasheet Section 5 and Figure 37.
How does hardware sector lockdown work on the AT25DQ161-SSH-T?
The AT25DQ161-SSH-T implements hardware sector lockdown via a dedicated command (0x3D) that permanently disables further writes to selected sectors. Once locked, no software or hardware reset can unlock them - ensuring immutable storage for calibration data or boot code. This feature is distinct from software-based protection and is documented in AT25DQ161-SSH-T datasheet Section 9.1 and Figure 11.
What power-saving modes does the AT25DQ161-SSH-T offer?
The AT25DQ161-SSH-T provides three low-power states: Standby (25 µA typical), Deep Power-Down (3 µA typical), and Ultra-Deep Power-Down (500 nA typical). Entry is controlled by command (0xB9) and exit requires CS# pulse timing per datasheet Section 11. These modes are fully supported in the AT25DQ161-SSH-T and validated across the industrial temperature range.
Is the AT25DQ161-SSH-T compatible with standard SPI controllers?
Yes - the AT25DQ161-SSH-T is fully SPI mode 0 and mode 3 compatible, using standard SI/SO/SCK/CS# signaling. It requires no special controller IP; standard SPI peripherals can drive all commands, including Dual-I/O and Quad-I/O operations via opcode extension. All timing parameters (e.g., tV = 6 ns max) meet JEDEC-compliant SPI specifications as verified in AT25DQ161-SSH-T datasheet Tables 34–35 and Figure 32–35.
AT25DQ161-SSH-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 16Mbit
- Memory Organization:
- 2M x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 100 MHz
- Write Cycle Time - Word, Page:
- 7µs, 3ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25DQ161-SSH-T FAQ
1.How can I place an order for AT25DQ161-SSH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DQ161-SSH-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 AT25DQ161-SSH-T reliable?
The price and inventory of AT25DQ161-SSH-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25DQ161-SSH-T is usually 5 days.
3.What payment methods are accepted for AT25DQ161-SSH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DQ161-SSH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DQ161-SSH-T?
AT25DQ161-SSH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DQ161-SSH-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 AT25DQ161-SSH-T?
For technical support, including AT25DQ161-SSH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DQ161-SSH-T requirements.
6.How does Aetrix verify that AT25DQ161-SSH-T is sourced from the original manufacturer or authorized distributors?
All AT25DQ161-SSH-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 AT25DQ161-SSH-T meets industry standards.
7.What is the process for return or replacement of AT25DQ161-SSH-T?
All AT25DQ161-SSH-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DQ161-SSH-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 AT25DQ161-SSH-T part is unused and in its original packaging.
Return procedure for AT25DQ161-SSH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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