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Renesas AT45DB161E-SSHF2B-T
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- Part No.:
- AT45DB161E-SSHF2B-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT45DB161E-SSHF2B-T.pdf
- Description:
- IC FLASH 16MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,114
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Product details
Overview
AT45DB161E-SSHF2B-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 supports industrial temperature range (−40°C to +85°C) in an 8-lead SOIC package.
For engineers reviewing the AT45DB161E-SSHF2B-T datasheet, AT45DB161E-SSHF2B-T pinout, AT45DB161E-SSHF2B-T application, or AT45DB161E-SSHF2B-T equivalent, key selection criteria include its buffer-interleaved write capability, ultra-low 400 nA deep power-down current, factory-configurable 512-byte page mode, sector lockdown security, and JEDEC-standard ID read support for system identification and firmware validation.
Technical Context
The AT45DB161E-SSHF2B-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 delivers 6 ns clock-to-output timing at up to 85 MHz, supporting high-throughput streaming applications without address latching or parallel bus overhead.
It features hardware- and software-controlled sector protection, including individual sector lockdown (permanent read-only), a 128-byte OTP security register (64 bytes factory-unique, 64 bytes user-programmable), and program/erase suspend/resume - critical for real-time systems requiring deterministic latency during non-volatile updates.
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, supports modes 0 and 3; no external address lines required |
| Max clock frequency | 85 MHz (RapidS™ high-frequency mode); 15 MHz low-power read option |
| Page size | Factory-configurable: 512 bytes (binary) or 528 bytes (standard DataFlash) |
| Power consumption | 400 nA ultra-deep power-down (typical); 7 mA active read @ 15 MHz |
| Data retention & endurance | 20 years retention; ≥100,000 program/erase cycles per page |
| Operating voltage | Single 2.3 V–3.6 V or 2.5 V–3.6 V supply; no high-voltage programming needed |
Pinout & Package
AT45DB161E-SSHF2B-T is housed in an 8-lead SOIC (0.208" wide, JEDEC MS-012AA), with pins arranged in standard dual-inline configuration. The package is RoHS-compliant, green, and suitable for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; places device in standby (high-Z SO) when deasserted |
| SCK | Serial Clock | Input timing reference for SPI commands; supports up to 85 MHz in RapidS™ mode |
| SI | Serial Input | Command/address/data input line; sampled on SCK rising edge (mode 0) or falling edge (mode 3) |
| SO | Serial Output | Data output line; drives valid data within 6 ns of SCK edge (tV max) |
| WP | Write Protect | Hardware-enabled sector protection control; low = protection enabled per sector register |
| RESET | Reset Input | Active-low hardware reset; initiates internal state machine recovery and status register clear |
| VCC | Power Supply | 2.3–3.6 V single supply; powers all logic, memory, and I/O circuits |
| GND | Ground | Reference return path for VCC and all signal terminals |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers | Two independent 512/528-byte buffers enable simultaneous receive-and-program operations, eliminating write stalls in continuous data streams |
| RapidS™ interface | 85 MHz max clock with 6 ns tV enables >10 MB/s sustained read throughput, outperforming standard SPI Flash in streaming applications |
| Flexible erase granularity | Page (512/528 B), block (4 kB), sector (128 kB), and chip (16 Mbit) erase options allow precise wear leveling and firmware update partitioning |
| OTP Security Register | 128-byte register with 64-byte factory-unique ID and 64-byte user space supports secure boot key storage and device authentication |
| Sector lockdown | Hardware-permanent read-only lock for any sector prevents accidental or malicious overwrite of critical firmware or calibration data |
Applications
| Industrial HMI Firmware Storage | Medical Device Data Logging |
|---|---|
Use Scenario: Storing GUI assets, boot code, and configuration tables in panel-mounted HMIs with limited PCB space and strict power budgets. IC Role / Device Role / Timing Role: Non-volatile firmware and asset repository accessed via SPI from ARM Cortex-M host; RapidS™ mode ensures fast UI refresh during boot. Use Value: Dual-buffer interleaving allows background firmware patching without interrupting display rendering; 400 nA deep power-down extends battery life in portable HMIs. | Use Scenario: Capturing time-stamped sensor readings (ECG, SpO₂) in handheld diagnostic tools with local storage before cloud upload. IC Role / Device Role / Timing Role: High-reliability sequential data logger; uses page-erase and auto-page-rewrite to sustain long-term cyclic logging without wear-out. Use Value: 100,000-cycle endurance per page and 20-year data retention ensure integrity across device lifetime; sector lockdown protects FDA-mandated calibration records. |
| Automotive Telematics Boot Memory | IoT Edge Node Configuration Storage |
Use Scenario: Storing bootloader, secure boot keys, and OTA update staging area in vehicle telematics control units operating across −40°C to +85°C. IC Role / Device Role / Timing Role: SPI-connected boot memory with hardware reset and JEDEC ID verification; used during cold start and secure firmware validation. Use Value: Factory-programmed unique ID enables cryptographic binding to vehicle VIN; industrial temp rating and 2.3 V min operation ensure reliability in automotive electrical environments. | Use Scenario: Holding network credentials, sensor calibration offsets, and firmware version metadata in battery-powered LPWAN sensors deployed in remote infrastructure. IC Role / Device Role / Timing Role: Low-power configuration store accessed infrequently but requiring instant availability and tamper resistance. Use Value: Ultra-deep power-down (400 nA) minimizes quiescent drain; OTP security register stores encrypted Wi-Fi PSKs immune to field reprogramming. |
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 W25Q16JVSNIQ | Standard quad-SPI NOR Flash (16 Mbit); no SRAM buffers, no RapidS™, no page-size configurability; 133 MHz QSPI vs. 85 MHz SPI | Lacks concurrent buffer operation and low-power streaming optimizations; better suited for XIP code execution than sequential logging | Select if system requires QSPI/XIP and has higher pin count budget; not drop-in for buffer-dependent workflows |
| Microchip SST26VF016B-104I/MF | 16 Mbit serial QuadFlash with 104 MHz QSPI; includes 256-byte cache but no dual independent buffers; no sector lockdown or OTP security register | Higher bandwidth for code fetch, but no hardware-enforced permanent read-only sectors or factory-unique ID | Prefer for high-speed boot code storage where security and streaming write concurrency are secondary |
Compared with W25Q16JVSNIQ and SST26VF016B-104I/MF, the AT45DB161E-SSHF2B-T uniquely delivers buffer-interleaved sequential writes, ultra-low deep-power-down current, and hardware-sector lockdown - making it optimal for embedded data loggers, firmware-updatable HMIs, and security-critical boot storage where write concurrency and tamper resistance are mandatory.
Availability
AT45DB161E-SSHF2B-T is available at Aetrix Electronics and suitable for industrial HMI firmware storage, medical data logging, automotive telematics boot memory, and IoT edge node configuration storage requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT45DB161E-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 trusted microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT markets.
The AT45DB161E belongs to Renesas' DataFlash family - designed specifically for high-reliability, low-pin-count, sequential-access non-volatile storage in resource-constrained embedded systems requiring concurrent read/write and robust data security.
FAQ
What is the default page size configuration for AT45DB161E-SSHF2B-T?
The AT45DB161E-SSHF2B-T is factory-configured for 528-byte pages (standard DataFlash format), but supports reconfiguration to 512-byte binary pages via the Buffer and Page Size Configuration command (0x3D). This setting persists across power cycles and affects addressing, command timing, and buffer alignment - critical for compatibility with legacy DataFlash drivers.
Does AT45DB161E-SSHF2B-T support hardware write protection?
Yes, AT45DB161E-SSHF2B-T supports hardware write protection via the WP (Write Protect) pin. When WP is driven low, sector protection settings defined in the Sector Protection Register become active, preventing program/erase operations on protected sectors. This complements software-based protection and provides fail-safe enforcement independent of firmware state.
How does the dual-buffer architecture of AT45DB161E-SSHF2B-T improve system throughput?
The AT45DB161E-SSHF2B-T's two independent 512/528-byte SRAM buffers enable true interleaved operation: while Buffer 1 writes data to main memory, Buffer 2 simultaneously accepts new incoming data via SPI. This eliminates write latency stalls in continuous streaming applications such as audio recording or sensor data capture, sustaining near-maximum SPI bandwidth without host-side buffering overhead.
What is the purpose of the 128-byte Security Register in AT45DB161E-SSHF2B-T?
The 128-byte Security Register in AT45DB161E-SSHF2B-T contains 64 bytes factory-programmed with a unique device identifier and 64 bytes user-programmable for keys, certificates, or calibration data. It is One-Time Programmable (OTP), ensuring cryptographic binding and tamper-resistant storage of sensitive information essential for secure boot and device authentication workflows.
Can AT45DB161E-SSHF2B-T operate reliably at 2.3 V supply?
Yes, AT45DB161E-SSHF2B-T is fully specified for operation down to 2.3 V across the industrial temperature range (−40°C to +85°C). All AC/DC parameters - including 85 MHz RapidS™ timing, 6 ns tV, and program/erase functionality - are guaranteed at 2.3 V, enabling use in battery-powered or brownout-prone systems where higher-voltage Flash devices would fail.
AT45DB161E-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
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 4ms
- 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
AT45DB161E-SSHF2B-T FAQ
1.How can I place an order for AT45DB161E-SSHF2B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161E-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 AT45DB161E-SSHF2B-T reliable?
The price and inventory of AT45DB161E-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 AT45DB161E-SSHF2B-T is usually 5 days.
3.What payment methods are accepted for AT45DB161E-SSHF2B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161E-SSHF2B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161E-SSHF2B-T?
AT45DB161E-SSHF2B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161E-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 AT45DB161E-SSHF2B-T?
For technical support, including AT45DB161E-SSHF2B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161E-SSHF2B-T requirements.
6.How does Aetrix verify that AT45DB161E-SSHF2B-T is sourced from the original manufacturer or authorized distributors?
All AT45DB161E-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 AT45DB161E-SSHF2B-T meets industry standards.
7.What is the process for return or replacement of AT45DB161E-SSHF2B-T?
All AT45DB161E-SSHF2B-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161E-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 AT45DB161E-SSHF2B-T part is unused and in its original packaging.
Return procedure for AT45DB161E-SSHF2B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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