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Renesas AT45DB161E-SHD-T
- Part No.:
- AT45DB161E-SHD-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DB161E-SHD-T.pdf
- Description:
- IC FLASH 16MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:12,554
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Product details
Overview
AT45DB161E-SHD-T from Renesas Electronics is a 16-Mbit serial DataFlash memory with 512-kbit extra capacity, operating from 2.3 V–3.6 V or 2.5 V–3.6 V, supporting SPI modes 0/3 and RapidS™ up to 85 MHz, featuring two independent 512/528-byte SRAM buffers and continuous array read capability - used for firmware storage and voice/data logging in embedded systems.
For engineers reviewing the AT45DB161E-SHD-T datasheet, AT45DB161E-SHD-T pinout, AT45DB161E-SHD-T application, or AT45DB161E-SHD-T equivalent, key selection criteria include page size configurability (512 vs. 528 bytes), ultra-deep power-down current (400 nA typical), program/erase suspend/resume support, and dual-buffer interleaved write capability for real-time streaming applications.
Technical Context
The AT45DB161E-SHD-T implements a serial Flash architecture with two dedicated SRAM buffers enabling concurrent data reception and main memory reprogramming. Its RapidS™ interface supports high-frequency continuous reads via opcodes 0Bh and 1Bh, achieving ≤6 ns clock-to-output time.
Memory organization comprises 4,096 pages of either 512 or 528 bytes (factory-configurable), with flexible erase granularity: page (512/528 B), block (4 kB), sector (128 kB), or full chip (16 Mbits). Sector protection and OTP security register (128 bytes) provide hardware-enforced data integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 16 Mbits main + 512 kbits extra = 17,301,504 bits total; enables compact firmware/image storage without parallel bus overhead |
| Supply voltage | 2.3 V–3.6 V or 2.5 V–3.6 V single supply; eliminates need for level shifters in low-voltage microcontroller designs |
| Max clock frequency | 85 MHz (RapidS™ mode); supports high-throughput streaming in audio/video buffering applications |
| Page size | User-configurable 512 or 528 bytes; 528-byte default includes 16-byte overhead for ECC/emulation; 512-byte option maximizes usable payload |
| Power-down current | 400 nA ultra-deep power-down (typical); extends battery life in always-on sensor nodes and portable devices |
| Endurance & retention | 100,000 program/erase cycles per page minimum; 20-year data retention; suitable for field-upgradable industrial firmware |
| Interface standard | SPI-compatible (modes 0 and 3); interoperable with standard MCU SPI peripherals without custom driver logic |
Pinout & Package
AT45DB161E-SHD-T uses an 8-lead SOIC package (0.208" wide), RoHS-compliant and green packaged. Pin functions are defined per JEDEC standard for serial Flash devices.
| 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 all SPI transactions; supports up to 85 MHz in RapidS™ mode |
| SI | Serial Input | Data/command input path; latched on SCK rising edge (mode 0) or falling edge (mode 3) |
| SO | Serial Output | Data output path; drives valid data within 6 ns of SCK edge; high-Z when CS inactive |
| WP | Write Protect | Hardware sector lock control; active-low; enables individual sector lockdown when asserted during programming |
| RESET | Hardware Reset | Active-low asynchronous reset; returns device to power-on state without requiring power cycle |
| VCC | Power Supply | Single 2.3–3.6 V supply; powers core, I/O, and charge pump for erase/program operations |
| GND | Ground | Reference for all signals and internal circuitry; must be low-impedance for stable high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers | Two independent 512/528-byte buffers enable simultaneous receive-and-program operation, eliminating write latency in continuous data streams |
| RapidS™ interface | High-speed read mode with ≤6 ns tV and 85 MHz clock support improves throughput over legacy SPI by >2× in burst-access scenarios |
| Flexible erase hierarchy | Page (512/528 B), block (4 kB), sector (128 kB), and chip (16 Mbits) erase options allow precise wear leveling and partial firmware updates |
| Program/erase suspend | Allows interrupting long erase/write operations to service urgent reads or commands-critical for real-time system responsiveness |
| OTP Security Register | 128-byte one-time programmable register (64-byte factory UID + 64-byte user space) enables secure device authentication and calibration storage |
Applications
| Industrial Firmware Storage | Medical Data Logger |
|---|---|
Use Scenario: Storing and updating boot code and application firmware in PLCs and motor controllers with field upgrade capability. IC Role / Device Role / Timing Role: Nonvolatile program memory with in-system reprogrammability via SPI; supports rapid page rewrites during maintenance windows. Use Value: Dual-buffer operation allows background firmware validation while new image loads, minimizing downtime during OTA updates. | Use Scenario: Capturing and retaining patient vital signs (ECG, SpO₂) in portable diagnostic devices between wireless uploads. IC Role / Device Role / Timing Role: High-reliability sequential data buffer with 20-year retention and 100k-cycle endurance for cyclic logging. Use Value: Ultra-deep power-down (400 nA) extends battery life to >5 years in intermittent-sampling configurations. |
| Audio Voice Recorder | Smart Meter Firmware |
Use Scenario: Recording voice prompts and alarm messages in building automation panels with local playback capability. IC Role / Device Role / Timing Role: Sequential-access Flash optimized for continuous write/read of PCM audio streams using RapidS™ mode. Use Value: 85 MHz RapidS™ read speed enables real-time audio decompression and playback without external RAM buffering. | Use Scenario: Secure storage of tariff tables, encryption keys, and meter calibration data in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: Protected nonvolatile memory with sector lockdown and OTP security register for tamper-resistant configuration storage. Use Value: Hardware-enforced sector lockdown prevents unauthorized modification of billing-critical parameters after factory programming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT45DB161D-SHD-T | Previous revision with identical pinout and command set; lacks RapidS™ mode support and has slower max clock (66 MHz) | Not suitable for 85 MHz high-throughput streaming; retains same endurance and power specs | Select only if RapidS™ is unused and legacy compatibility is required |
| W25Q16JVSNIQ | Quad SPI interface (QSPI), 16 Mbit density, 133 MHz clock, but no dual SRAM buffers or built-in read-modify-write | Better raw bandwidth for random access; no native E²PROM emulation or seamless streaming write capability | Choose for QSPI host ecosystems needing higher peak bandwidth; avoid where buffer interleaving or byte-alterability is essential |
Compared with AT45DB161D-SHD-T and W25Q16JVSNIQ, the AT45DB161E-SHD-T uniquely combines dual-buffer streaming, RapidS™ acceleration, and hardware-assisted E²PROM emulation-making it optimal for deterministic real-time write workloads rather than pure density or random-access speed.
Availability
AT45DB161E-SHD-T is available at Aetrix Electronics and suitable for industrial firmware storage, medical data logging, audio voice recording, and smart meter firmware requiring stable component supply across extended product lifecycles.
Supply support for AT45DB161E-SHD-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 embedded solutions for automotive, industrial, infrastructure, and IoT markets.
The AT45DB161E-SHD-T belongs to Renesas' DataFlash family, designed specifically for systems needing reliable, low-pin-count, low-power sequential storage with real-time streaming and in-field update capabilities.
FAQ
What is the maximum operating frequency of the AT45DB161E-SHD-T?
The AT45DB161E-SHD-T supports up to 85 MHz in RapidS™ mode (opcodes 0Bh/1Bh), with standard SPI mode operation up to 66 MHz. The 6 ns clock-to-output time ensures timing compliance at full speed. This specification is validated across the full industrial temperature range (−40°C to +85°C) and applies directly to the AT45DB161E-SHD-T in its 8-lead SOIC package.
Does the AT45DB161E-SHD-T support true byte-level writes like EEPROM?
No, the AT45DB161E-SHD-T does not support direct byte-level writes. However, it provides a self-contained read-modify-write operation that emulates EEPROM behavior at the page level. This three-step process-read page to buffer, modify desired bytes, then program back-enables bit/byte alterability without external software overhead, and is fully supported in the AT45DB161E-SHD-T's command set.
How is page size configured on the AT45DB161E-SHD-T?
Page size (512 vs. 528 bytes) on the AT45DB161E-SHD-T is factory-configured and fixed per unit. The -SHD-T suffix indicates the standard 528-byte page configuration. Units with 512-byte pages use different ordering codes (e.g., -SHB-T). Configuration cannot be changed in-system; users must select the appropriate variant at procurement based on payload efficiency versus ECC overhead requirements.
What power-saving modes does the AT45DB161E-SHD-T offer?
The AT45DB161E-SHD-T offers two ultra-low-power states: Deep Power-Down (5 µA typical) and Ultra-Deep Power-Down (400 nA typical). Both are entered via dedicated commands and exited with hardware RESET or CS pulse. These modes retain full memory contents and are qualified for industrial temperature operation, making them ideal for battery-powered AT45DB161E-SHD-T deployments in remote sensors and portable diagnostics.
Can the AT45DB161E-SHD-T replace standard NOR Flash in existing designs?
The AT45DB161E-SHD-T is not a pin-compatible or functional drop-in replacement for parallel NOR Flash due to its serial interface, sequential access model, and page-oriented architecture. It requires SPI-based firmware changes and layout adaptation. However, it can replace NOR Flash in new designs targeting lower pin count, reduced noise, smaller footprint, and streaming write efficiency - provided the AT45DB161E-SHD-T's command protocol and buffer management are implemented correctly.
AT45DB161E-SHD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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:
- 2.5V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT45DB161E-SHD-T FAQ
1.How can I place an order for AT45DB161E-SHD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161E-SHD-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-SHD-T reliable?
The price and inventory of AT45DB161E-SHD-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-SHD-T is usually 5 days.
3.What payment methods are accepted for AT45DB161E-SHD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161E-SHD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161E-SHD-T?
AT45DB161E-SHD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161E-SHD-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-SHD-T?
For technical support, including AT45DB161E-SHD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161E-SHD-T requirements.
6.How does Aetrix verify that AT45DB161E-SHD-T is sourced from the original manufacturer or authorized distributors?
All AT45DB161E-SHD-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-SHD-T meets industry standards.
7.What is the process for return or replacement of AT45DB161E-SHD-T?
All AT45DB161E-SHD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161E-SHD-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-SHD-T part is unused and in its original packaging.
Return procedure for AT45DB161E-SHD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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