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Renesas AT45DB161E-SSHD2B-T
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- Part No.:
- AT45DB161E-SSHD2B-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT45DB161E-SSHD2B-T.pdf
- Description:
- IC FLASH 16MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,519
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Product details
Overview
AT45DB161E-SSHD2B-T from Renesas Electronics is a 16-Mbit serial DataFlash memory with 512/528-byte page architecture, SPI-compatible interface (modes 0 and 3), RapidS™ high-speed operation up to 85 MHz, and dual 512/528-byte SRAM buffers enabling concurrent read/write. It operates from a single 2.3–3.6 V supply and targets embedded firmware storage, voice/image buffering, and E²PROM emulation in space-constrained industrial controllers.
For engineers reviewing the AT45DB161E-SSHD2B-T datasheet, AT45DB161E-SSHD2B-T pinout, AT45DB161E-SSHD2B-T application, or AT45DB161E-SSHD2B-T equivalent, key selection considerations include its 85 MHz RapidS timing, ultra-low 400 nA deep power-down current, factory-configurable 512-byte page mode, dual-buffer interleaving capability, and hardware/software sector protection for secure firmware updates.
Technical Context
The AT45DB161E-SSHD2B-T implements a sequential-access Flash architecture with two independent SRAM buffers, enabling true background programming: data can be loaded into one buffer while the other writes to main memory. Its RapidS™ mode uses optimized command sequences and reduced setup/hold times to achieve 85 MHz clock rates-exceeding standard SPI timing limits.
It supports flexible erase granularity (page/4 kB block/128 kB sector/16 Mbit chip) and full program/erase suspend/resume functionality. Sector lockdown and 128-byte OTP security register provide tamper-resistant firmware integrity, while JEDEC-standard Manufacturer/Device ID reads ensure compatibility verification in automated test systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 16 Mbits (2,097,152 bytes) organized as 4,096 pages × 512 or 528 bytes |
| Interface | SPI-compatible 3-wire serial (CS, SI, SO, SCK); supports modes 0 and 3 |
| Max clock frequency | 85 MHz in RapidS™ mode; 15 MHz in low-power read mode |
| Power supply | Single 2.3–3.6 V or 2.5–3.6 V rail; no high-voltage programming required |
| Deep power-down current | 400 nA typical - enables multi-year battery operation in IoT edge nodes |
| Endurance & retention | 100,000 program/erase cycles per page; 20 years data retention at 85°C |
| Page size configuration | User-selectable via command; factory pre-configured for 512-byte pages (SSHD2B-T variant) |
Pinout & Package
AT45DB161E-SSHD2B-T uses an 8-lead SOIC (0.208" wide) package per ordering code suffix "SSHD2B-T", compliant with JEDEC MS-012AA. Pin functions are electrically validated per datasheet Table 1 and Figure 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; places SO in high-Z when deasserted; initiates command latching on falling edge |
| SCK | Serial Clock | Input clock synchronizing all SI/SO data transfers; supports up to 85 MHz in RapidS™ mode |
| SI | Serial Input | MOSI line accepting commands, addresses, and write data; sampled on SCK rising edge (mode 0) |
| SO | Serial Output | MISO line delivering read data and status; driven only when CS is active; tV ≤ 6 ns max clock-to-output |
| WP | Write Protect | Hardware sector lock control; low = enables sector protection register writes; tied high for default operation |
| RESET | Hardware Reset | Active-low asynchronous reset; clears internal state and returns to power-on default configuration |
| VCC | Power Supply | 2.3–3.6 V input; powers core logic, Flash array, and SRAM buffers |
| GND | Ground | Reference return path for VCC and all I/O signals; must be low-impedance for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers (512/528 B each) | Enables continuous streaming: receive new data into Buffer 1 while Buffer 2 programs main memory - eliminates write latency gaps |
| RapidS™ high-speed interface | 85 MHz operation via optimized command protocol - 5.7× faster than standard SPI at 15 MHz for bulk reads |
| Flexible erase hierarchy | Page (512/528 B), block (4 kB), sector (128 kB), or full chip (16 Mbit) erasure - minimizes wear and optimizes OTA update time |
| 128-byte OTP Security Register | 64 B factory-unique ID + 64 B user-programmable space - supports cryptographic key binding and device authentication |
| Program/Erase Suspend/Resume | Pause active erase or program to service urgent read requests - critical for real-time logging and alarm response |
| Ultra-deep power-down (400 nA) | Reduces energy consumption by >99% vs. standby (25 µA); ideal for battery-powered sensors with infrequent wake-ups |
Applications
| Firmware Storage in Industrial PLCs | Voice/Image Buffering in Edge Cameras |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating across -40°C to +85°C industrial environments. IC Role / Device Role / Timing Role: Nonvolatile firmware repository with in-system reprogrammability; executes rapid page rewrites during maintenance windows without system reboot. Use Value: Dual-buffer interleaving cuts firmware update time by 40% vs. single-buffer Flash; sector lockdown prevents accidental corruption of boot code. |
Use Scenario: Capturing and temporarily storing JPEG frames from CMOS image sensors before compression and transmission over cellular links. IC Role / Device Role / Timing Role: High-bandwidth sequential buffer; leverages RapidS™ 85 MHz reads to sustain >10 MB/s frame streaming without DRAM. Use Value: 512-byte page alignment matches typical JPEG MCU boundaries; ultra-deep power-down extends battery life in solar-powered surveillance nodes. |
| E²PROM Emulation in Medical Sensors | Secure Boot Code Storage in Gateways |
Use Scenario: Replacing discrete EEPROM in portable glucose monitors requiring byte-level parameter updates (calibration offsets, usage logs). IC Role / Device Role / Timing Role: Emulated EEPROM via internal read-modify-write algorithm; handles bit/byte alterations without external controller intervention. Use Value: 100,000-cycle endurance exceeds medical device lifetime requirements; 20-year data retention ensures log integrity over product lifecycle. |
Use Scenario: Storing signed bootloader images in smart home gateways where firmware integrity must survive physical tampering attempts. IC Role / Device Role / Timing Role: Secure nonvolatile storage with hardware-enforced sector lockdown and OTP-based key binding. Use Value: Sector lockdown makes boot sector permanently read-only after initial provisioning; 128-byte security register stores HMAC keys inaccessible to firmware. |
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 (QSPI) interface; no dual SRAM buffers; 133 MHz max clock; 3.3 V only | Lacks RapidS™-equivalent speed optimization and background programming; requires QSPI controller support | Choose for QSPI-capable SoCs needing higher peak bandwidth but no concurrent buffer operations |
| Macronix MX25L1633F | 16 Mbit standard SPI; 104 MHz max; no RapidS™; 512-byte pages only; no OTP security register | Missing sector lockdown, security register, and suspend/resume - unsuitable for secure or real-time-critical use | Choose for cost-sensitive consumer applications where security and real-time responsiveness are not required |
Compared with Winbond W25Q16JW and Macronix MX25L1633F, the AT45DB161E-SSHD2B-T uniquely delivers concurrent buffer operation, hardware-enforced sector lockdown, and 400 nA ultra-deep power-down - making it optimal for battery-powered industrial edge devices requiring secure, low-latency firmware updates.
Availability
AT45DB161E-SSHD2B-T is available at Aetrix Electronics and suitable for industrial automation, medical sensor design, and smart gateway development requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT45DB161E-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 specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT markets.
The AT45DB161E belongs to Renesas' DataFlash® family, engineered specifically for high-reliability embedded systems needing sequential-access Flash with integrated SRAM buffers, rapid reprogramming, and robust security features.
FAQ
What is the page size configuration for AT45DB161E-SSHD2B-T?
The AT45DB161E-SSHD2B-T is factory pre-configured for 512-byte pages, as indicated by the "SSHD2B-T" ordering code. This configuration is fixed and cannot be changed in-system; it differs from default 528-byte variants and optimizes alignment for firmware and E²PROM emulation workloads.
Does AT45DB161E-SSHD2B-T support standard SPI or only RapidS™ mode?
The AT45DB161E-SSHD2B-T supports both standard SPI (modes 0 and 3) and RapidS™ mode. Standard SPI operates up to 15 MHz for low-power reads; RapidS™ enables 85 MHz operation using optimized command sequences and reduced timing margins - selectable per application need.
How does the dual-buffer architecture of AT45DB161E-SSHD2B-T improve system performance?
The AT45DB161E-SSHD2B-T's two independent 512-byte SRAM buffers allow simultaneous data reception and Flash programming: while Buffer 1 loads new data, Buffer 2 writes to main memory. This interleaving eliminates write stalls, enabling continuous data streams in voice recorders, sensor loggers, and firmware updaters.
What security mechanisms does AT45DB161E-SSHD2B-T provide for firmware protection?
The AT45DB161E-SSHD2B-T provides individual sector protection, permanent sector lockdown (making protected sectors read-only), and a 128-byte OTP security register with 64 bytes factory-programmed unique ID and 64 bytes user-programmable space - enabling cryptographic binding and anti-tampering for secure boot implementations.
Can AT45DB161E-SSHD2B-T operate across the full industrial temperature range?
Yes, the AT45DB161E-SSHD2B-T is specified for operation across the full industrial temperature range of -40°C to +85°C, with guaranteed performance including 100,000 program/erase cycles and 20-year data retention at maximum temperature - validated per Renesas qualification standards.
AT45DB161E-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:
- Not For New Designs
- 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
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 4ms
- 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
AT45DB161E-SSHD2B-T FAQ
1.How can I place an order for AT45DB161E-SSHD2B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161E-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 AT45DB161E-SSHD2B-T reliable?
The price and inventory of AT45DB161E-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 AT45DB161E-SSHD2B-T is usually 5 days.
3.What payment methods are accepted for AT45DB161E-SSHD2B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161E-SSHD2B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161E-SSHD2B-T?
AT45DB161E-SSHD2B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161E-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 AT45DB161E-SSHD2B-T?
For technical support, including AT45DB161E-SSHD2B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161E-SSHD2B-T requirements.
6.How does Aetrix verify that AT45DB161E-SSHD2B-T is sourced from the original manufacturer or authorized distributors?
All AT45DB161E-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 AT45DB161E-SSHD2B-T meets industry standards.
7.What is the process for return or replacement of AT45DB161E-SSHD2B-T?
All AT45DB161E-SSHD2B-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161E-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 AT45DB161E-SSHD2B-T part is unused and in its original packaging.
Return procedure for AT45DB161E-SSHD2B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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