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Renesas AT45DQ161-SHF2B-T
- Part No.:
- AT45DQ161-SHF2B-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DQ161-SHF2B-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,950
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Product details
Overview
AT45DQ161-SHF2B-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 resource-constrained embedded systems requiring concurrent read/write via dual SRAM buffers.
For engineers reviewing the AT45DQ161-SHF2B-T datasheet, AT45DQ161-SHF2B-T pinout, AT45DQ161-SHF2B-T application, or AT45DQ161-SHF2B-T equivalent, key selection criteria include SPI mode 0/3 compatibility, RapidS™ high-speed operation, buffer-to-memory page programming with built-in erase, sector lockdown security, and industrial-temperature-grade SOIC-8 packaging.
Technical Context
The AT45DQ161-SHF2B-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 legacy SPI, Dual-I/O (3Bh/BBh), and Quad-I/O (6Bh/EBh) read modes plus Dual-input/Quad-input buffer writes.
Memory organization comprises 4,096 pages of 512 or 528 bytes, selectable at order time. Erase granularity includes page (512/528 B), block (4 kB), sector (128 kB), and chip (16 Mbit), with suspend/resume capability for program/erase operations and hardware/software sector protection including permanent lockdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 16 Mbit (17,301,504 bits), organized as 4,096 pages × 512 or 528 bytes |
| Interface speed | 85 MHz max for SPI, Dual-I/O, and Quad-I/O modes; tV ≤ 6 ns clock-to-output |
| Supply voltage | 2.3 V to 3.6 V single supply - enables direct interfacing with 2.5 V/3.3 V logic without level shifters |
| Power consumption | 500 nA ultra-deep power-down (typ), 25 µA standby (typ), 11 mA active read at 20 MHz (typ) |
| Endurance & retention | 100,000 program/erase cycles per page minimum; 20-year data retention |
| Page size | User-configurable: 512 bytes (binary-aligned) or 528 bytes (DataFlash default); factory-set at order time |
| Security features | 128-byte OTP Security Register (64 B factory UID + 64 B user-programmable), sector lockdown, individual sector protection |
Pinout & Package
AT45DQ161-SHF2B-T uses an 8-lead 150-mil narrow SOIC package (JEDEC MS-012AA), RoHS-compliant, with standard SPI pinout and hardware write-protect control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command/address/data transfer; enables device decoding in multi-peripheral buses |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports modes 0 and 3 (CPOL=0/1, CPHA=0/1) |
| 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 RapidS™ timing |
| WP | Write Protect | Hardware-enabled sector protection override; low = enable protection, high = disable (per configuration register) |
| RESET | Reset Input | Active-low hardware reset; initiates internal state machine reset and exits deep power-down |
| VCC | Power Supply | 2.3–3.6 V core and I/O supply; decoupling required per datasheet layout guidelines |
| GND | Ground | Reference return path for VCC and all I/O signals; requires low-impedance PCB plane connection |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers (512/528 B each) | Enables true concurrent write (buffer fill) while main memory page is being erased/programmed - eliminates write latency stalls |
| RapidS™ high-speed interface | Reduces instruction overhead and increases effective throughput in high-frequency SPI applications (e.g., firmware streaming) |
| Configurable page size (512 vs 528 B) | Supports binary-aligned addressing (512 B) for MCU cache line compatibility or legacy DataFlash (528 B) interoperability |
| Program/Erase suspend/resume | Allows urgent read access or interrupt handling during long erase cycles - critical for real-time system responsiveness |
| Sector lockdown + OTP security register | Permits permanent read-only locking of boot sectors and storage of immutable keys or identifiers - meets secure boot requirements |
Applications
| Industrial HMI Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing GUI assets, calibration tables, and firmware updates in panel-mounted HMIs with limited board space and thermal budget. IC Role / Device Role / Timing Role: Nonvolatile sequential-access storage with rapid page rewrites and low active/standby current. Use Value: Dual-buffer operation allows background firmware download while display remains responsive; 500 nA deep power-down extends battery life in portable units. |
Use Scenario: Retaining patient-specific settings, sensor calibration data, and regulatory-compliant audit logs in Class II medical electronics. IC Role / Device Role / Timing Role: Secure, high-endurance parameter storage with tamper-resistant sector lockdown. Use Value: Sector lockdown prevents accidental or malicious overwrite of FDA-required configuration sectors; 100K-cycle endurance exceeds 10-year service life. |
| Automotive Telematics Boot Code | IoT Edge Node OTA Update Cache |
Use Scenario: Hosting boot code and safety-critical initialization routines in automotive telematics control units operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-temperature-rated Flash memory with JEDEC-standard ID read and robust SPI timing margins. Use Value: 85 MHz Quad-I/O read speed accelerates boot time; 20-year data retention ensures reliability over vehicle lifetime. |
Use Scenario: Caching signed firmware images prior to authenticated installation in battery-powered wireless sensor nodes. IC Role / Device Role / Timing Role: Low-power, high-reliability update staging memory with hardware write protection. Use Value: Ultra-deep power-down (500 nA) minimizes quiescent drain during idle periods; OTP register stores public key hash for signature verification. |
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, Quad SPI only (no Dual-I/O), no SRAM buffers, no RapidS™ | Lacks concurrent buffer operation and legacy SPI mode 0/3 compatibility; lower power-down current (1 µA) | Select when Quad SPI-only interface suffices and buffer interleaving is unnecessary. |
| Macronix MX25L1633F | 16 Mbit, 2.7–3.6 V supply, standard SPI + QPI, no SRAM buffers, no page-size configuration | Narrower VCC range; no dual-buffer architecture or programmable page size; supports QPI but not RapidS™ | Choose for cost-sensitive designs where industrial temp range and buffer concurrency are not required. |
Compared with W25Q16JW and MX25L1633F, the AT45DQ161-SHF2B-T uniquely delivers dual-SRAM-buffer concurrency, RapidS™ timing acceleration, and factory-configurable 512/528-byte page size - making it optimal for deterministic real-time firmware update and secure boot applications.
Availability
AT45DQ161-SHF2B-T is available at Aetrix Electronics and suitable for industrial HMI firmware storage, medical device configuration memory, and automotive telematics boot code requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT45DQ161-SHF2B-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 belongs to Renesas' DataFlash family, designed specifically for high-reliability, low-power, sequential-access nonvolatile storage in embedded systems demanding concurrent operation and advanced security.
FAQ
What is the default page size configured for AT45DQ161-SHF2B-T?
The AT45DQ161-SHF2B-T is factory pre-configured to the 528-byte DataFlash page size by default. This setting is fixed at manufacturing and cannot be changed in-system; however, the 512-byte binary-aligned option is available under alternate ordering codes (e.g., AT45DQ161-SHF2B-512).
Does AT45DQ161-SHF2B-T support standard SPI mode 0 and mode 3?
Yes, AT45DQ161-SHF2B-T fully supports SPI modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1) for backward compatibility with legacy controllers. All command sequences, including RapidS™, Dual-I/O, and Quad-I/O, operate within these modes.
How does the dual-SRAM buffer architecture improve system performance in AT45DQ161-SHF2B-T?
The AT45DQ161-SHF2B-T's two independent 512/528-byte SRAM buffers allow one buffer to be filled via SPI while the other is simultaneously transferring data to main memory - eliminating write latency and enabling continuous data streaming without CPU intervention.
What security mechanisms are implemented in AT45DQ161-SHF2B-T?
AT45DQ161-SHF2B-T provides hardware sector protection, software-controllable sector lockdown (permanent read-only), and a 128-byte OTP Security Register with 64 bytes factory-programmed unique ID and 64 bytes user-programmable space - supporting secure boot and device authentication.
What is the maximum clock frequency supported by AT45DQ161-SHF2B-T in Quad-I/O mode?
AT45DQ161-SHF2B-T supports up to 85 MHz in Quad-I/O mode using opcodes 6Bh (fast read) or EBh (RapidS™ quad read), achieving up to 340 MB/s effective throughput with tV ≤ 6 ns clock-to-output timing.
AT45DQ161-SHF2B-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-SHF2B-T FAQ
1.How can I place an order for AT45DQ161-SHF2B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-SHF2B-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-SHF2B-T reliable?
The price and inventory of AT45DQ161-SHF2B-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-SHF2B-T is usually 5 days.
3.What payment methods are accepted for AT45DQ161-SHF2B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-SHF2B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-SHF2B-T?
AT45DQ161-SHF2B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-SHF2B-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-SHF2B-T?
For technical support, including AT45DQ161-SHF2B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-SHF2B-T requirements.
6.How does Aetrix verify that AT45DQ161-SHF2B-T is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-SHF2B-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-SHF2B-T meets industry standards.
7.What is the process for return or replacement of AT45DQ161-SHF2B-T?
All AT45DQ161-SHF2B-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-SHF2B-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-SHF2B-T part is unused and in its original packaging.
Return procedure for AT45DQ161-SHF2B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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