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Renesas AT45DB161E-SHFHA-T
- Part No.:
- AT45DB161E-SHFHA-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DB161E-SHFHA-T.pdf
- Description:
- IC FLASH 16MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,742
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Product details
Overview
AT45DB161E-SHFHA-T from Renesas Electronics is a 16-Mbit serial DataFlash memory with 512-kbit extra capacity, supporting SPI modes 0 and 3 at up to 85 MHz, featuring two independent 528-byte SRAM buffers, 4,096 pages (528 bytes/page), and ultra-deep power-down current of 400 nA (typ). It enables continuous data streaming in embedded voice, firmware storage, and industrial logging systems.
For engineers reviewing the AT45DB161E-SHFHA-T datasheet, AT45DB161E-SHFHA-T pinout, AT45DB161E-SHFHA-T application, or AT45DB161E-SHFHA-T equivalent, key selection criteria include buffer-interleaved write capability, page/sector/chip erase flexibility, OTP security register, RapidS™ high-speed read mode, and industrial-temperature operation with green packaging.
Technical Context
The AT45DB161E-SHFHA-T implements a dual-buffered sequential-access architecture: main memory (4,096 × 528-byte pages) and two independent SRAM buffers (528 bytes each), enabling concurrent buffer write and main memory reprogramming. Its SPI interface supports legacy and RapidS™ command sets for high-frequency (0Bh/1Bh opcodes) and low-power (01h opcode) reads.
It integrates hardware/software sector protection, 128-byte OTP security register (64-byte factory UID + 64-byte user-programmable), and multi-level erase (page/4 kB block/128 kB sector/16 Mbit chip), with suspend/resume during program/erase and deep power-down states (400 nA typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 16 Mbit main memory + 512 kbit extra space; organized as 4,096 pages × 528 bytes (default), enabling efficient firmware partitioning. |
| Interface Speed | Up to 85 MHz SPI clock; supports RapidS™ for high-throughput sequential reads without address overhead. |
| Buffer Architecture | Two independent 528-byte SRAM buffers allow simultaneous receive-to-buffer and buffer-to-flash programming-critical for real-time data logging. |
| Power Consumption | 400 nA ultra-deep power-down (typ); 25 µA standby (typ); enables battery-powered edge devices with multi-year shelf life. |
| Erase Granularity | Page (528 B), block (4 kB), sector (128 kB), and full chip (16 Mbit); supports fine-grained firmware updates and wear leveling. |
| Data Retention & Endurance | 20 years retention; ≥100,000 program/erase cycles per page-validated for mission-critical industrial firmware storage. |
| Operating Voltage | Single supply: 2.3 V–3.6 V or 2.5 V–3.6 V; eliminates need for external voltage translators in mixed-voltage systems. |
Pinout & Package
AT45DB161E-SHFHA-T uses an 8-pad Ultra-thin DFN package (5 mm × 6 mm × 0.6 mm), RoHS-compliant and halide-free. The exposed pad on the bottom is not internally connected and may be left floating or tied to GND for thermal/mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; deassertion places SO in high-impedance state and enters standby mode (not Deep Power-Down). |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports up to 85 MHz for RapidS™ mode. |
| SI | Serial Input | Command/address/data input line; accepts all instructions including buffer writes and sector protection commands. |
| SO | Serial Output | Tri-state output delivering read data, status registers, or device IDs; high-impedance when CS is deasserted. |
| WP | Write Protect | Hardware-enabled sector lockdown control; active-low signal that enforces read-only status on protected sectors. |
| RESET | Hardware Reset | Active-low asynchronous reset; returns device to power-on state and clears internal command latches. |
| VCC | Power Supply | 2.3–3.6 V or 2.5–3.6 V single supply; powers core logic, buffers, and flash array simultaneously. |
| GND | Ground | Reference for all I/O and internal circuitry; must be low-impedance connection for stable timing and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| RapidS™ High-Speed Read | Enables continuous array reads at up to 85 MHz using dedicated opcodes (0Bh/1Bh), reducing latency vs. standard SPI reads. |
| Dual Independent SRAM Buffers | Two 528-byte buffers support true interleaving: one receives new data while the other programs flash-eliminating write stalls. |
| User-Configurable Page Size | Factory-set to 528 bytes (default) or configurable to 512 bytes via command; simplifies alignment with legacy filesystems or ECC blocks. |
| Program/Erase Suspend & Resume | Allows interrupting long erase/write operations to service urgent reads-essential for real-time response in control systems. |
| 128-Byte OTP Security Register | Contains 64-byte factory UID (immutable) and 64-byte user-programmable space for keys, calibration data, or secure boot seeds. |
| Hardware Sector Lockdown | Per-sector permanent read-only enforcement via WP pin or software command-prevents accidental or malicious firmware overwrite. |
Applications
| Firmware Storage | Industrial Data Logging |
|---|---|
Use Scenario: Storing microcontroller boot code and field-upgradable application firmware in PLCs and motor drives. IC Role / Device Role / Timing Role: Nonvolatile program memory accessed sequentially via SPI during boot and OTA update phases. Use Value: Dual-buffered writes enable seamless firmware patching without halting real-time control loops. |
Use Scenario: Continuous timestamped sensor data capture in environmental monitoring nodes powered by coin cells. IC Role / Device Role / Timing Role: High-reliability sequential write buffer with sector protection against corruption during brown-out events. Use Value: 400 nA ultra-deep power-down extends battery life beyond 5 years while preserving stored logs. |
| Embedded Voice Playback | Secure Boot Configuration |
Use Scenario: Storing compressed audio samples for voice prompts in medical devices and smart home hubs. IC Role / Device Role / Timing Role: Low-latency sequential read memory supporting uninterrupted playback at variable bitrates. Use Value: RapidS™ mode delivers sustained >60 MB/s effective throughput-enough for stereo 48 kHz PCM streams. |
Use Scenario: Holding immutable root-of-trust keys and signed configuration manifests in industrial gateways. IC Role / Device Role / Timing Role: Secure nonvolatile storage for cryptographic material, enforced by hardware lockdown and OTP register. Use Value: 128-byte OTP register with factory UID ensures device identity binding and prevents cloning attacks. |
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 | 16 Mbit Quad SPI NOR Flash; no SRAM buffers; 133 MHz QSPI clock; no RapidS™ or buffer-to-flash interleaving. | Lacks dual-buffer write concurrency and low-power deep-sleep modes; suited for random-access code XIP, not streaming log storage. | Choose W25Q16JVSNIQ only if system requires Quad SPI bus bandwidth and executes code directly from flash (XIP). |
| MX25L1606EM2I-12G | 16 Mbit standard SPI NOR Flash; 85 MHz max; no SRAM buffers; no OTP register or sector lockdown; 1 µA deep power-down. | No concurrent buffer operation or hardware-enforced sector read-only; lower security and streaming efficiency than AT45DB161E-SHFHA-T. | Select MX25L1606EM2I-12G where cost sensitivity outweighs need for buffer interleaving, OTP security, or ultra-low sleep current. |
Compared with W25Q16JVSNIQ and MX25L1606EM2I-12G, the AT45DB161E-SHFHA-T uniquely delivers buffer-concurrent writes, 400 nA deep-sleep, and hardware sector lockdown-making it optimal for streaming, secure, and battery-constrained applications where NOR alternatives fall short in functional integration.
Availability
AT45DB161E-SHFHA-T is available at Aetrix Electronics and suitable for firmware storage, industrial data logging, embedded voice playback, and secure boot configuration requiring stable component supply across automotive, industrial, and medical product lifecycles.
Supply support for AT45DB161E-SHFHA-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 markets.
The AT45DB161E-SHFHA-T belongs to Renesas' DataFlash family-designed specifically for high-reliability sequential-access storage in resource-constrained embedded systems requiring low pin count, ultra-low power, and integrated security.
FAQ
What is the default page size configuration for the AT45DB161E-SHFHA-T?
The AT45DB161E-SHFHA-T is factory configured with a default page size of 528 bytes per page, supporting 4,096 pages for a total of 16 Mbit main memory plus 512 kbit extra space. This configuration aligns with standard DataFlash addressing and enables efficient ECC handling and firmware partitioning without requiring user reconfiguration.
Does the AT45DB161E-SHFHA-T support true concurrent read and write operations?
Yes-the AT45DB161E-SHFHA-T supports true concurrency via its two independent 528-byte SRAM buffers: while one buffer is being written via SPI, the other can simultaneously program data into the main flash array. This eliminates write stalls and enables uninterrupted data streaming in logging or audio applications.
How does the RapidS™ mode improve performance over standard SPI reads on the AT45DB161E-SHFHA-T?
RapidS™ mode on the AT45DB161E-SHFHA-T uses optimized opcodes (0Bh or 1Bh) to eliminate address byte overhead during continuous array reads, achieving up to 85 MHz clock rates and sustained throughput exceeding 60 MB/s-significantly faster than legacy E8h-mode reads limited by command/address latency.
What security features are implemented in the AT45DB161E-SHFHA-T's 128-byte OTP register?
The AT45DB161E-SHFHA-T's 128-byte OTP security register contains 64 bytes factory-programmed with a unique device identifier (UID) and 64 bytes user-programmable for keys, certificates, or calibration data. Once programmed, OTP contents are permanently locked and cannot be erased or rewritten.
Can the AT45DB161E-SHFHA-T operate across the full industrial temperature range?
Yes-the AT45DB161E-SHFHA-T is specified to operate reliably from –40 °C to +85 °C, meeting full industrial temperature requirements. Its electrical characteristics-including timing, power consumption, and endurance-are validated across this range per the official Renesas datasheet DS-AT45DB161E-8782 Rev. P.
AT45DB161E-SHFHA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm 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:
- 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-SHFHA-T FAQ
1.How can I place an order for AT45DB161E-SHFHA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161E-SHFHA-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-SHFHA-T reliable?
The price and inventory of AT45DB161E-SHFHA-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-SHFHA-T is usually 5 days.
3.What payment methods are accepted for AT45DB161E-SHFHA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161E-SHFHA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161E-SHFHA-T?
AT45DB161E-SHFHA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161E-SHFHA-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-SHFHA-T?
For technical support, including AT45DB161E-SHFHA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161E-SHFHA-T requirements.
6.How does Aetrix verify that AT45DB161E-SHFHA-T is sourced from the original manufacturer or authorized distributors?
All AT45DB161E-SHFHA-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-SHFHA-T meets industry standards.
7.What is the process for return or replacement of AT45DB161E-SHFHA-T?
All AT45DB161E-SHFHA-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161E-SHFHA-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-SHFHA-T part is unused and in its original packaging.
Return procedure for AT45DB161E-SHFHA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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