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Renesas AT45DB161E-SSHF-T
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- Part No.:
- AT45DB161E-SSHF-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT45DB161E-SSHF-T.pdf
- Description:
- IC FLASH 16MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:16,636
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Product details
Overview
AT45DB161E-SSHF-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 serves as nonvolatile program/data storage in embedded microcontroller systems requiring low-voltage (2.3–3.6 V) operation and continuous streaming capability.
For engineers reviewing the AT45DB161E-SSHF-T datasheet, AT45DB161E-SSHF-T pinout, AT45DB161E-SSHF-T application, or AT45DB161E-SSHF-T equivalent, key selection criteria include page size configurability (512 vs. 528 bytes), buffer-to-memory programming flexibility, sector lockdown security, ultra-deep power-down current (400 nA typ.), and industrial temperature support (–40°C to +85°C).
Technical Context
The AT45DB161E-SSHF-T implements a sequential-access Flash architecture with two independent SRAM buffers, enabling true interleaved write operations: while one buffer receives incoming data via SPI, the other transfers content to main memory without halting host communication. Its RapidS™ mode supports high-frequency continuous array reads using opcodes 0Bh and 1Bh, achieving ≤6 ns clock-to-output delay.
Memory organization comprises 4,096 pages of 512 or 528 bytes (factory-configurable), plus 512 kbits extra capacity. Erase granularity spans page (512/528 B), block (4 kB), sector (128 kB), and full chip (16 Mbits), with suspend/resume capability for both program and erase cycles - critical for real-time system responsiveness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbits (17,301,504 bits) main array + 512 kbits extra capacity |
| Page Size | User-configurable: 512 bytes (binary) or 528 bytes (standard DataFlash); factory-set at production |
| Max Clock Frequency | 85 MHz in RapidS™ mode; enables high-throughput streaming without wait states |
| Power Supply | Single 2.3–3.6 V or 2.5–3.6 V supply; eliminates need for voltage translators in low-voltage MCUs |
| Deep Power-Down Current | 400 nA typical; extends battery life in always-on sensor nodes and portable devices |
| Endurance & Retention | 100,000 program/erase cycles per page; 20-year data retention at +85°C |
| Operating Temperature | –40°C to +85°C industrial grade; validated across full range per JEDEC JESD22-A108 |
Pinout & Package
AT45DB161E-SSHF-T is supplied in an 8-lead SOIC package (0.208" wide, JEDEC MS-012AC), with pins arranged in standard dual-inline configuration. The package is RoHS-compliant, halide-free, and Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; places device in standby (not deep power-down) when deasserted; SO goes high-Z |
| SCK | Serial Clock | Input timing reference for SPI; supports modes 0 and 3; max 85 MHz in RapidS™ |
| SI | Serial Input | MOSI line for command/address/data input; latched on SCK rising edge (mode 0) or falling edge (mode 3) |
| SO | Serial Output | MISO line for data output; valid within 6 ns of SCK edge in RapidS™ mode |
| WP | Write Protect | Hardware sector protection control; low = enable protection; tied high for normal operation |
| RESET | Hardware Reset | Active-low asynchronous reset; returns device to power-on state; optional use |
| VCC | Power Supply | 2.3–3.6 V or 2.5–3.6 V single supply; powers core, I/O, and charge pump |
| GND | Ground | Reference for all signals and internal circuitry; decoupling capacitor required near VCC |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM Buffers | Two independent 512/528-byte buffers allow simultaneous host data reception and background page reprogramming |
| RapidS™ Interface | High-speed SPI mode delivering ≤6 ns tV and 85 MHz operation for latency-sensitive firmware updates |
| Flexible Erase Granularity | Page (512/528 B), block (4 kB), sector (128 kB), and chip erase options minimize wear and optimize update time |
| Program/Erase Suspend | Pause active erase or program to service urgent read requests - essential for deterministic real-time response |
| OTP Security Register | 128-byte register with 64-byte factory UID + 64-byte user-programmable space for secure boot keys or calibration data |
| Sector Lockdown | Permanent read-only locking of any sector after freeze command; prevents accidental or malicious overwrite |
Applications
| Firmware Storage | Industrial Data Logging |
|---|---|
Use Scenario: Storing MCU boot code and field-upgradable application firmware in PLCs and motor drives. IC Role / Device Role / Timing Role: Nonvolatile program memory accessed sequentially during boot and OTA updates. Use Value: Dual-buffer architecture enables seamless firmware patching without interrupting real-time control loops. |
Use Scenario: Continuous timestamped sensor data capture in environmental monitoring gateways. IC Role / Device Role / Timing Role: High-reliability sequential write buffer supporting sustained 15 MHz low-power read/write cycles. Use Value: 400 nA ultra-deep power-down current extends battery life to multi-year deployments. |
| Secure Boot Configuration | Medical Device Parameter Storage |
Use Scenario: Storing cryptographic keys and immutable boot policy in diagnostic imaging equipment. IC Role / Device Role / Timing Role: Secure OTP register and sector lockdown provide hardware-enforced read-only integrity. Use Value: 64-byte factory-programmed UID enables unique device identity binding for HIPAA-compliant audit trails. |
Use Scenario: Retaining calibrated transducer coefficients and usage history in portable ultrasound units. IC Role / Device Role / Timing Role: High-endurance (100k cycles) page-level writes preserve accuracy across repeated recalibrations. Use Value: 20-year data retention at +85°C ensures parameter validity over full product lifecycle in sterilized environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| W25Q16JVSNIQ | Quad SPI interface; no dual SRAM buffers; 16 Mbit density; 133 MHz max clock | Lacks RapidS™ and buffer interleaving; better suited for random-access code XIP than streaming data | Select if system requires QSPI bus bandwidth and supports different command set; not drop-in compatible |
| MX25L1606EM2I-12G | Standard SPI only; no RapidS™; 16 Mbit; 86 MHz max; no OTP register or sector lockdown | Lower security and streaming capability; optimized for cost-sensitive consumer firmware storage | Choose when advanced features like suspend/resume or hardware UID are unnecessary |
Compared with W25Q16JVSNIQ and MX25L1606EM2I-12G, the AT45DB161E-SSHF-T uniquely delivers concurrent buffer operation and hardware-enforced sector lockdown - making it optimal for safety-critical embedded systems requiring deterministic write performance and tamper-resistant configuration storage.
Availability
AT45DB161E-SSHF-T is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and battery-powered IoT edge nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT45DB161E-SSHF-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 enterprise applications.
The AT45DB161E-SSHF-T belongs to Renesas' DataFlash® family, designed specifically for high-reliability, low-pin-count serial Flash storage in resource-constrained embedded systems where sequential access, buffer concurrency, and hardware security are critical.
FAQ
What is the default page size configured in AT45DB161E-SSHF-T?
The AT45DB161E-SSHF-T is factory pre-configured for 528-byte pages (standard DataFlash format), though 512-byte binary page size is supported via configuration commands. Page size cannot be changed post-manufacture without reprogramming the configuration register, and the device retains its setting across power cycles.
Does AT45DB161E-SSHF-T support true SPI mode 3 (CPOL=1, CPHA=1)?
Yes, AT45DB161E-SSHF-T fully supports SPI modes 0 and 3 as specified in the datasheet. In mode 3, data is sampled on the falling edge of SCK and shifted out on the rising edge, enabling interoperability with MCUs that require inverted clock polarity and phase alignment.
How does the dual-buffer architecture of AT45DB161E-SSHF-T improve system throughput?
The AT45DB161E-SSHF-T's two independent 512/528-byte SRAM buffers allow the host to write new data into one buffer while the other simultaneously programs a page into Flash memory. This eliminates write latency bottlenecks and enables continuous data streaming - especially valuable in audio buffering and real-time logging applications.
Can AT45DB161E-SSHF-T be used for EEPROM emulation?
Yes, AT45DB161E-SSHF-T supports robust EEPROM emulation via its built-in read-modify-write command (opcode 81h), which automatically handles page read, local buffer modification, and page rewrite - all without host software managing erase-before-write logic or wear leveling.
What is the purpose of the 128-byte Security Register in AT45DB161E-SSHF-T?
The 128-byte Security Register in AT45DB161E-SSHF-T contains 64 bytes factory-programmed with a unique identifier and 64 bytes user-programmable for keys, certificates, or calibration data. It is one-time programmable (OTP) and protected against overwrite, providing hardware-rooted device identity and secure boot foundation.
AT45DB161E-SSHF-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:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 16Mbit
- Memory Organization:
- 528 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-SSHF-T FAQ
1.How can I place an order for AT45DB161E-SSHF-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161E-SSHF-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-SSHF-T reliable?
The price and inventory of AT45DB161E-SSHF-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-SSHF-T is usually 5 days.
3.What payment methods are accepted for AT45DB161E-SSHF-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161E-SSHF-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161E-SSHF-T?
AT45DB161E-SSHF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161E-SSHF-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-SSHF-T?
For technical support, including AT45DB161E-SSHF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161E-SSHF-T requirements.
6.How does Aetrix verify that AT45DB161E-SSHF-T is sourced from the original manufacturer or authorized distributors?
All AT45DB161E-SSHF-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-SSHF-T meets industry standards.
7.What is the process for return or replacement of AT45DB161E-SSHF-T?
All AT45DB161E-SSHF-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161E-SSHF-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-SSHF-T part is unused and in its original packaging.
Return procedure for AT45DB161E-SSHF-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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