My Inquiry
My Account
Renesas AT45DQ161-SSHD2B-T
.jpg)
- Part No.:
- AT45DQ161-SSHD2B-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT45DQ161-SSHD2B-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,954
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT45DQ161-SSHD2B-T from Renesas Electronics is a 16-Mbit serial DataFlash memory IC with SPI interface, supporting Dual-I/O and Quad-I/O modes up to 85 MHz, 512/528-byte configurable page size, two independent 512/528-byte SRAM buffers, and ultra-low 500 nA deep power-down current. It serves as nonvolatile storage for firmware, boot code, and configuration data in space-constrained embedded systems.
For engineers reviewing the AT45DQ161-SSHD2B-T datasheet, AT45DQ161-SSHD2B-T pinout, AT45DQ161-SSHD2B-T application, or AT45DQ161-SSHD2B-T equivalent, key selection criteria include SPI mode 0/3 compatibility, RapidS™ high-speed read/write capability, buffer-to-memory page programming with built-in erase, sector lockdown security, and industrial temperature operation with green packaging.
Technical Context
The AT45DQ161-SSHD2B-T implements a dual-buffered architecture where two independent SRAM buffers (each 512 or 528 bytes) enable concurrent data reception and main memory reprogramming-critical for continuous streaming applications. Its command set supports byte/page program, buffer write, buffer-to-main-memory transfer, and flexible erase granularity (page/4 kB block/128 kB sector/chip).
It features hardware/software sector protection, 128-byte OTP security register (64-byte factory UID + 64-byte user programmable), and JEDEC-standard Manufacturer/Device ID read. Power management includes Deep Power-Down (3 µA typ) and Ultra-Deep Power-Down (500 nA typ), with clock-to-output time ≤6 ns at 85 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 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 capable |
| Max operating frequency | 85 MHz for SPI, Dual-I/O, and Quad-I/O operations |
| Page size | User-configurable: 512 bytes (binary) or 528 bytes (standard DataFlash); device shipped pre-configured |
| Power-down current | 500 nA typical (Ultra-Deep Power-Down), 3 µA typical (Deep Power-Down) |
| Data retention | 20 years at 85°C; endurance ≥100,000 program/erase cycles per page |
| Operating voltage | 2.3 V to 3.6 V single supply; compliant with industrial temperature range |
Pinout & Package
AT45DQ161-SSHD2B-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 input enabling SPI communication; must be held low during command/data transfer |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports up to 85 MHz |
| MOSI | Master Out Slave In | Serial data input for commands, addresses, and write data in standard/Dual/Quad modes |
| MISO | Master In Slave Out | Serial data output for read operations; supports single/Dual/Quad-output modes |
| WP | Write Protect | Hardware-enabled sector protection control; low = protection active when configured |
| RESET | Reset Input | Active-low hardware reset; initiates internal reset sequence and clears status register |
| VCC | Power Supply | 2.3–3.6 V supply; powers core logic, I/O, and SRAM buffers |
| GND | Ground | Reference ground for all circuitry; requires low-impedance connection for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Buffer Architecture | Two independent 512/528-byte SRAM buffers enable simultaneous receive-and-program operation, eliminating write latency in streaming systems |
| RapidS™ High-Speed Interface | Supports 85 MHz Quad-I/O reads with ≤6 ns clock-to-output, enabling >30 MB/s effective throughput |
| Flexible Erase Granularity | Page (512/528 B), block (4 kB), sector (128 kB), and chip-level erase options allow precise wear leveling and firmware update partitioning |
| OTP Security Register | 128-byte one-time programmable register with 64-byte factory UID and 64-byte user field for secure device identification and key storage |
| Sector Lockdown | Hardware-frozen read-only lock for any memory sector, preventing accidental or malicious overwrite of critical firmware or calibration data |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing and updating firmware images and runtime parameters in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory and configuration store; supports rapid field updates via Quad-I/O without system downtime. Use Value: 100,000+ program/erase cycles and 20-year data retention ensure long-term reliability; sector lockdown prevents corruption of safety-critical startup code. | Use Scenario: Holding calibrated sensor offsets, device serial numbers, and regulatory compliance data in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter storage; OTP register stores immutable device identity; WP pin enables hardware write protection. Use Value: 128-byte OTP security register with factory UID provides traceability; industrial temp rating ensures operation across clinical environments. |
| IoT Edge Node Boot Code | Automotive Infotainment UI Assets |
Use Scenario: Hosting compressed boot loader and secure boot keys in battery-powered wireless sensor nodes requiring ultra-low standby power. IC Role / Device Role / Timing Role: Low-voltage (2.3 V min), low-power serial Flash for secure boot initialization; Ultra-Deep Power-Down reduces system quiescent current to <1 µA. Use Value: 500 nA Ultra-Deep Power-Down current extends battery life; SPI mode 0/3 compatibility simplifies integration with common MCU peripherals. | Use Scenario: Caching graphical assets (icons, fonts, animations) and localized language strings in automotive head units with strict thermal and space constraints. IC Role / Device Role / Timing Role: High-bandwidth auxiliary memory supplementing main DDR; Quad-I/O read delivers >30 MB/s asset streaming to GPU or display controller. Use Value: 85 MHz Quad-I/O operation and 6 ns tV enable real-time UI rendering; 5×6 mm DFN package fits tight PCB footprints. |
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 Quad SPI Flash; no dual-SRAM buffers; lacks RapidS™; 1.65–3.6 V supply; no OTP security register | Lower-cost general-purpose Flash; unsuitable for concurrent buffer+program streaming or secure UID storage | Select when buffer interleaving and factory UID are unnecessary; verify 1.65 V min compatibility with host MCU |
| Macronix MX25L1633F | 16-Mbit Quad SPI Flash; no SRAM buffers; supports DTR mode; 2.3–3.6 V; no sector lockdown or OTP register | Higher-speed DTR read option; lacks hardware-based sector protection and secure identity storage | Choose for higher read bandwidth in DTR mode; avoid if firmware integrity or device authentication is required |
Compared with W25Q16JW and MX25L1633F, the AT45DQ161-SSHD2B-T uniquely combines dual SRAM buffers for zero-latency streaming, RapidS™ timing for sub-6 ns reads, and OTP-based device identity-making it optimal for secure, real-time embedded firmware storage where concurrent access and tamper resistance are mandatory.
Availability
AT45DQ161-SSHD2B-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and IoT edge node boot code requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT45DQ161-SSHD2B-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, infrastructure, and IoT applications.
The AT45DQ161-SSHD2B-T belongs to Renesas' DataFlash family-designed specifically for high-reliability, low-power, and secure serial Flash applications demanding concurrent buffer access, rapid sequential reads, and hardware-enforced data protection.
FAQ
What is the default page size configuration for AT45DQ161-SSHD2B-T?
The AT45DQ161-SSHD2B-T is factory pre-configured for 528-byte pages-the standard DataFlash page size-enabling compatibility with legacy DataFlash command sets and E2PROM emulation workflows. Users may reconfigure to 512-byte (binary) pages via the Buffer and Page Size Configuration command (0x3D), but the device ships with 528-byte mode active. This setting directly affects address mapping and command execution in AT45DQ161-SSHD2B-T applications.
Does AT45DQ161-SSHD2B-T support true Quad SPI (QSPI) protocol with four data lines in both directions?
Yes, AT45DQ161-SSHD2B-T supports true Quad-I/O operation: it accepts commands and addresses on four lines (IO0–IO3) in Quad-input mode and outputs data on all four lines in Quad-output mode (e.g., opcode 0x6B). Unlike basic Quad SPI Flash, AT45DQ161-SSHD2B-T does not require a separate "quad enable" bit in a configuration register-its Quad-I/O mode is activated dynamically by command opcode, simplifying initialization and ensuring deterministic timing behavior in AT45DQ161-SSHD2B-T designs.
How does the dual-buffer architecture of AT45DQ161-SSHD2B-T improve write performance in streaming applications?
The AT45DQ161-SSHD2B-T contains two independent 512/528-byte SRAM buffers. While one buffer is being written to via SPI, the other can simultaneously transfer its contents to main memory-enabling uninterrupted data ingestion. This eliminates the traditional "write latency stall," allowing sustained write throughput. In AT45DQ161-SSHD2B-T implementations, this architecture supports real-time audio/video buffering, firmware OTA updates, and logging without host CPU intervention or external RAM.
Can AT45DQ161-SSHD2B-T be used as a direct replacement for older AT45DB series devices?
AT45DQ161-SSHD2B-T maintains backward compatibility with AT45DB161D command sets for basic read/write/erase operations but introduces new opcodes for Dual/Quad-I/O and RapidS™ timing. Pinout and voltage range (2.3–3.6 V) match AT45DB161D, but AT45DQ161-SSHD2B-T requires updated firmware to leverage enhanced modes. Legacy AT45DB161D designs can migrate to AT45DQ161-SSHD2B-T with minimal hardware changes-but full performance benefits require software adaptation for AT45DQ161-SSHD2B-T's advanced features.
What security mechanisms does AT45DQ161-SSHD2B-T provide beyond standard write protection?
AT45DQ161-SSHD2B-T offers three layered security features: (1) Hardware WP pin for physical sector write disable, (2) Software-configurable sector protection register (128 bits) enabling per-sector lock/unlock, and (3) Sector lockdown-a one-time hardware freeze making any sector permanently read-only. Additionally, its 128-byte OTP security register contains 64-byte factory-programmed unique ID and 64-byte user-programmable space, providing cryptographic binding and device authentication capability in AT45DQ161-SSHD2B-T deployments.
AT45DQ161-SSHD2B-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 2.5V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT45DQ161-SSHD2B-T FAQ
1.How can I place an order for AT45DQ161-SSHD2B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-SSHD2B-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-SSHD2B-T reliable?
The price and inventory of AT45DQ161-SSHD2B-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-SSHD2B-T is usually 5 days.
3.What payment methods are accepted for AT45DQ161-SSHD2B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-SSHD2B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-SSHD2B-T?
AT45DQ161-SSHD2B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-SSHD2B-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-SSHD2B-T?
For technical support, including AT45DQ161-SSHD2B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-SSHD2B-T requirements.
6.How does Aetrix verify that AT45DQ161-SSHD2B-T is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-SSHD2B-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-SSHD2B-T meets industry standards.
7.What is the process for return or replacement of AT45DQ161-SSHD2B-T?
All AT45DQ161-SSHD2B-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-SSHD2B-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-SSHD2B-T part is unused and in its original packaging.
Return procedure for AT45DQ161-SSHD2B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT45DQ161-SSHD2B-T Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
