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Renesas AT45DB161E-SSHFKA-T
- Part No.:
- AT45DB161E-SSHFKA-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT45DB161E-SSHFKA-T.pdf
- Description:
- IC FLASH 16MBIT 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,247
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Product details
Overview
AT45DB161E-SSHFKA-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), targeting embedded firmware storage and real-time data logging in space-constrained systems.
For engineers reviewing the AT45DB161E-SSHFKA-T datasheet, AT45DB161E-SSHFKA-T pinout, AT45DB161E-SSHFKA-T application, or AT45DB161E-SSHFKA-T equivalent, key selection considerations include its buffer-interleaved write capability, ultra-low 400 nA deep power-down current, configurable page size, sector lockdown security, and SOIC-8 (0.208" wide) packaging - all critical for low-power, secure, and layout-efficient SPI flash integration.
Technical Context
The AT45DB161E-SSHFKA-T implements a sequential-access Flash architecture with two independent SRAM buffers, enabling true background programming: while one buffer receives new data via SPI, the other transfers content to main memory without halting host communication. Its RapidS™ mode uses optimized command sequences (e.g., 0Bh/1Bh opcodes) to achieve 85 MHz clock rates and 6 ns clock-to-output timing.
Memory organization comprises 4,096 pages of 512 or 528 bytes (factory-configurable), plus 512 kbits of extra capacity. Erase granularity spans page (512/528 B), block (4 kB), sector (128 kB), and full chip (16 Mbits), with suspend/resume support for program/erase operations - essential for deterministic real-time system behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbits (17,301,504 bits) main array + 512 kbits extra capacity |
| Page Size | Factory-configurable 512 bytes or default 528 bytes per page |
| Max Clock Frequency | 85 MHz in RapidS™ mode - enables high-throughput streaming writes |
| Power-Down Current | 400 nA typical ultra-deep power-down - extends battery life in always-on sensors |
| Endurance & Retention | 100,000 program/erase cycles per page; 20-year data retention at +85°C |
| Operating Voltage | Single 2.3–3.6 V or 2.5–3.6 V supply - simplifies power design vs. dual-rail Flash |
| Temperature Range | −40°C to +85°C industrial grade - validated for harsh environmental deployment |
Pinout & Package
AT45DB161E-SSHFKA-T is packaged in an 8-lead SOIC (0.208" wide, JEDEC MS-012AC), 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 interface; supports modes 0 and 3 |
| SI | Serial Input | Data input path for commands, addresses, and write data |
| SO | Serial Output | Tri-state output for read data and status; high-impedance when CS inactive |
| WP | Write Protect | Hardware lock for sector protection register and lockdown control |
| RESET | Reset Input | Active-low hardware reset; initiates internal state machine recovery |
| VCC | Power Supply | 2.3–3.6 V single supply for all operations (read, program, erase) |
| GND | Ground | Reference return path for VCC and I/O signals |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM Buffers | Two independent 512/528-byte buffers enable simultaneous receive-and-program - eliminates write latency bottlenecks in continuous data streams |
| RapidS™ Interface | Optimized command set (e.g., 0Bh opcode) delivers 85 MHz operation and 6 ns tV - reduces serial transaction overhead by >30% vs. legacy SPI Flash |
| Flexible Erase Granularity | Page (512/528 B), block (4 kB), sector (128 kB), and chip erase - allows precise wear leveling and firmware update partitioning |
| Hardware Sector Lockdown | One-time programmable sector lockdown makes protected regions permanently read-only - prevents accidental or malicious firmware corruption |
| OTP Security Register | 128-byte register with 64-byte factory-unique ID + 64-byte user-programmable space - enables secure device authentication and traceability |
| Ultra-Low Power Modes | 400 nA ultra-deep power-down and 5 µA deep power-down - extends shelf life and runtime in energy-harvesting and battery-powered nodes |
Applications
| Firmware Storage | Data Logging |
|---|---|
Use Scenario: Storing boot code, application firmware, and configuration parameters in microcontroller-based edge devices. IC Role / Device Role / Timing Role: Non-volatile program memory accessed during cold start and field updates via SPI. Use Value: Dual-buffered page programming enables seamless in-system firmware upgrades without interrupting real-time sensor sampling. |
Use Scenario: Capturing timestamped sensor readings (e.g., temperature, pressure) in industrial monitoring nodes. IC Role / Device Role / Timing Role: High-reliability sequential write buffer with sector-level wear leveling. Use Value: 100,000-cycle endurance and 20-year retention ensure long-term integrity of logged data across maintenance intervals. |
| Secure Boot Loader | Audio/Imaging Buffer |
Use Scenario: Verifying cryptographic signatures before loading executable code in medical or automotive ECUs. IC Role / Device Role / Timing Role: Trusted storage for immutable bootloader image and public key certificates. Use Value: Hardware-enforced sector lockdown prevents tampering with boot-critical sectors, satisfying ISO 26262 ASIL-B requirements. |
Use Scenario: Temporary buffering of compressed audio frames or image tiles in portable multimedia devices. IC Role / Device Role / Timing Role: Low-latency, high-bandwidth scratchpad memory supporting burst-mode SPI reads. Use Value: 85 MHz RapidS™ read speed and 6 ns tV enable real-time playback of 16-bit stereo audio at 48 kHz without FIFO underflow. |
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 | 16 Mbit Quad SPI NOR Flash; no SRAM buffers; 133 MHz QSPI clock; lacks RapidS™ and page-size configurability | Higher throughput in QSPI master systems but no concurrent buffer write; less suited for streaming write workloads | Select when system uses Quad SPI controller and prioritizes raw read speed over write concurrency |
| Macronix MX25L1606EM2I-12G | 16 Mbit standard SPI NOR Flash; 85 MHz max clock; no dual buffers; no RapidS™; 100k endurance same | Drop-in compatible pinout (SOIC-8), but no background programming - requires host to pause writes during erase | Select for cost-sensitive designs where buffer interleaving is unnecessary and legacy SPI compatibility is mandatory |
Compared with W25Q16JVSNIQ and MX25L1606EM2I-12G, the AT45DB161E-SSHFKA-T uniquely delivers concurrent buffer write capability and factory-configurable page size - critical for deterministic real-time logging and firmware update pipelines where host CPU offload and flexible memory mapping are required.
Availability
AT45DB161E-SSHFKA-T is available at Aetrix Electronics and suitable for firmware storage, secure boot loader implementation, industrial data logging, and audio/image buffering requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT45DB161E-SSHFKA-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 AT45DB161E-SSHFKA-T belongs to Renesas' DataFlash family - designed specifically for systems needing high-reliability, low-pin-count, low-voltage serial Flash with integrated SRAM buffers to eliminate write bottlenecks in streaming data paths.
FAQ
What is the page size configuration of the AT45DB161E-SSHFKA-T?
The AT45DB161E-SSHFKA-T supports factory-configurable page sizes: either 512 bytes (binary-aligned) or 528 bytes (standard DataFlash format). The default is 528 bytes, but the 512-byte option is available for applications requiring strict power-of-two addressing. Configuration is fixed at manufacture and cannot be changed in-system.
Does the AT45DB161E-SSHFKA-T support true concurrent read and write operations?
Yes - the AT45DB161E-SSHFKA-T features two independent SRAM buffers. While one buffer accepts incoming data via SPI, the other can simultaneously transfer its contents to main memory. This enables true background programming without halting host communication, a capability not found in standard SPI NOR Flash devices.
What power-saving modes does the AT45DB161E-SSHFKA-T offer?
The AT45DB161E-SSHFKA-T provides three low-power states: standby (25 µA typical), deep power-down (5 µA typical), and ultra-deep power-down (400 nA typical). Ultra-deep mode retains memory contents while drawing negligible current - ideal for battery-backed or energy-harvesting systems requiring multi-year shelf life.
How is security implemented in the AT45DB161E-SSHFKA-T?
Security in the AT45DB161E-SSHFKA-T includes hardware-controlled sector protection, one-time programmable sector lockdown (making protected regions permanently read-only), and a 128-byte OTP security register with 64-byte factory-unique ID and 64-byte user-programmable space - enabling device authentication and secure firmware binding.
Is the AT45DB161E-SSHFKA-T pin-compatible with earlier AT45DBxxxD series devices?
No - the AT45DB161E-SSHFKA-T uses the same 8-lead SOIC-8 (0.208") package footprint as prior generations, but its RapidS™ command set, buffer architecture, and enhanced security registers introduce functional differences. Migration requires firmware updates to leverage new features and verify timing compliance.
AT45DB161E-SSHFKA-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:
- -
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR (SLC)
- Memory Size:
- 16Mbit
- Memory Organization:
- 2M x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 4ms
- Access Time:
- 7 ns
- 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-SSHFKA-T FAQ
1.How can I place an order for AT45DB161E-SSHFKA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161E-SSHFKA-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-SSHFKA-T reliable?
The price and inventory of AT45DB161E-SSHFKA-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-SSHFKA-T is usually 5 days.
3.What payment methods are accepted for AT45DB161E-SSHFKA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161E-SSHFKA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161E-SSHFKA-T?
AT45DB161E-SSHFKA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161E-SSHFKA-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-SSHFKA-T?
For technical support, including AT45DB161E-SSHFKA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161E-SSHFKA-T requirements.
6.How does Aetrix verify that AT45DB161E-SSHFKA-T is sourced from the original manufacturer or authorized distributors?
All AT45DB161E-SSHFKA-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-SSHFKA-T meets industry standards.
7.What is the process for return or replacement of AT45DB161E-SSHFKA-T?
All AT45DB161E-SSHFKA-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161E-SSHFKA-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-SSHFKA-T part is unused and in its original packaging.
Return procedure for AT45DB161E-SSHFKA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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