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Renesas AT45DB161E-MHF-Y
- Part No.:
- AT45DB161E-MHF-Y
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT45DB161E-MHF-Y.pdf
- Description:
- IC FLASH 16MBIT SPI 85MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,713
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Product details
Overview
AT45DB161E-MHF-Y 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-while-write. It operates from a single 2.3–3.6 V or 2.5–3.6 V supply and targets embedded firmware storage, voice/image buffering, and E²PROM emulation in space-constrained industrial systems.
For engineers reviewing the AT45DB161E-MHF-Y datasheet, AT45DB161E-MHF-Y pinout, AT45DB161E-MHF-Y application, or AT45DB161E-MHF-Y equivalent, this page delivers verified electrical specs, buffer-interleaved write timing, sector lockdown security, ultra-deep power-down (400 nA), and SOIC/UDFN/WLCSP package mapping - all confirmed against Renesas DS-AT45DB161E-8782 Rev. P.
Technical Context
The AT45DB161E-MHF-Y 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 supports 85 MHz clock rates with 6 ns clock-to-output delay, distinct from standard SPI timing.
It supports flexible erase granularity - page (512/528 B), block (4 kB), sector (128 kB), and full chip (16 Mbit) - plus suspend/resume for program/erase operations. Sector protection and permanent lockdown are enforced via dedicated registers and hardware WP pin control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 16 Mbit (2,097,152 bytes) main array + 512 kbit extra space; organized as 4,096 pages × 512 or 528 bytes |
| Interface | SPI-compatible 3-wire (CS, SI, SO, SCK); supports modes 0 and 3; RapidS™ enables 85 MHz operation |
| Supply voltage | Single 2.3–3.6 V or 2.5–3.6 V rail; no high-voltage programming required |
| Power consumption | 400 nA ultra-deep power-down (typical); 25 µA standby (typical); 7 mA active read @ 15 MHz (typical) |
| Data retention & endurance | 20 years retention; ≥100,000 program/erase cycles per page |
| Security features | 128-byte OTP security register (64 B factory UID + 64 B user-programmable); per-sector lockdown; hardware/software sector protection |
| Operating temperature | Full industrial range: –40°C to +85°C |
Pinout & Package
AT45DB161E-MHF-Y is packaged in an 8-lead SOIC (0.208" wide), per Renesas ordering code MHF. Pin functions are defined by CS (chip select, active-low), SI (serial input), SO (serial output), SCK (serial clock), RESET (active-low hardware reset), WP (write protect), VCC (power), and GND (ground).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; places SO in high-Z when deasserted; initiates command sequence on falling edge |
| SI | Serial Input | Command/address/data input; sampled on SCK rising edge in SPI mode 0, falling edge in mode 3 |
| SO | Serial Output | Data/command response output; driven only when CS is asserted; 6 ns max tV (clock-to-output) |
| SCK | Serial Clock | Master-generated clock; controls timing of SI sampling and SO driving; supports up to 85 MHz in RapidS™ mode |
| RESET | Hardware Reset | Active-low asynchronous reset; returns device to power-on state; resets status register and aborts ongoing operations |
| WP | Write Protect | Active-low hardware lock; disables sector protection register writes and page/block/sector erase when asserted |
| VCC | Power Supply | 2.3–3.6 V or 2.5–3.6 V single supply; powers core, I/O, and charge pump for erase/program |
| GND | Ground | Reference return path for VCC and all I/O signals; must be low-impedance for stable timing and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers (512/528 B each) | Enables true concurrent operation: receive new data into one buffer while reprogramming main memory from the other - critical for continuous streaming applications |
| RapidS™ high-speed interface | Supports 85 MHz clock rate with 6 ns tV, doubling throughput vs. legacy SPI commands; reduces firmware update time in resource-constrained hosts |
| User-configurable page size | Factory-set to 528 bytes (default) or 512 bytes; determines address alignment and buffer-to-memory transfer efficiency for byte-alterable E²PROM emulation |
| Program/erase suspend/resume | Allows interruption of long erase/write cycles to service urgent reads or commands - essential for real-time system responsiveness |
| Per-sector lockdown | Once enabled, makes any sector permanently read-only; prevents accidental or malicious overwrite of boot code or calibration data without factory intervention |
| Ultra-deep power-down (400 nA) | Reduces system standby current to nanoampere level; extends battery life in always-on IoT sensors and portable medical devices |
Applications
| Firmware Storage | Voice/Image Buffering |
|---|---|
Use Scenario: Storing boot code, FPGA configuration bitstreams, or microcontroller firmware in space-constrained industrial controllers. IC Role / Device Role / Timing Role: Nonvolatile sequential storage with fast random-access capability via page read and buffer transfer. Use Value: Eliminates need for parallel NOR Flash; reduces PCB layer count via 8-pin SOIC footprint and eliminates address bus routing. |
Use Scenario: Capturing and buffering audio samples or sensor image frames in edge AI cameras before compression/upload. IC Role / Device Role / Timing Role: High-throughput streaming buffer with background reprogramming using dual SRAM buffers. Use Value: Enables uninterrupted 85 MHz RapidS™ data ingestion while simultaneously writing to Flash - no dropped frames during write latency. |
| E²PROM Emulation | Secure Configuration Storage |
Use Scenario: Replacing discrete EEPROM in smart meters or PLCs for field-updatable calibration tables and event logs. IC Role / Device Role / Timing Role: Bit- and byte-alterable nonvolatile storage using built-in read-modify-write command sequence. Use Value: Achieves EEPROM-like flexibility without external wear-leveling firmware; 100,000-cycle endurance per page ensures >10-year field life. |
Use Scenario: Storing cryptographic keys, device identifiers, and secure boot manifests in medical or automotive ECUs. IC Role / Device Role / Timing Role: Tamper-resistant storage with 128-byte OTP security register and permanent sector lockdown. Use Value: Factory-programmed 64-byte UID prevents cloning; sector lockdown prevents runtime corruption of safety-critical parameters. |
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; 133 MHz QSPI clock; no SRAM buffers; no RapidS™ or read-while-write | Better random-access speed for XIP; unsuitable for continuous streaming or E²PROM emulation due to lack of buffers and suspend | Choose for execute-in-place (XIP) firmware execution; avoid if concurrent read/write or byte-alterability is required. |
| Microchip SST26VF016B-104V/SN | 16 Mbit Octal Flash; 104 MHz DDR interface; no dual buffers; supports SFDP but no RapidS™ or sector lockdown | Higher bandwidth for burst reads; lacks hardware write protection granularity and ultra-deep power-down (1 µA min) | Prefer for high-throughput data logging where security and ultra-low standby current are secondary. |
Compared with W25Q16JVSNIQ and SST26VF016B-104V/SN, the AT45DB161E-MHF-Y uniquely delivers concurrent buffer-based streaming, 400 nA ultra-deep power-down, and per-sector lockdown - making it optimal for battery-powered, safety-critical, or real-time streaming designs where NOR alternatives require external logic or firmware overhead.
Availability
AT45DB161E-MHF-Y is available at Aetrix Electronics and suitable for industrial control firmware storage, portable medical device voice buffering, and secure automotive configuration storage requiring stable component supply across extended product lifecycles.
Supply support for AT45DB161E-MHF-Y 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 belongs to Renesas' DataFlash family, engineered specifically for sequential-access, low-pin-count, low-power nonvolatile storage with integrated SRAM buffers - targeting embedded systems needing E²PROM emulation, streaming buffers, and robust security without external components.
FAQ
What is the page size configuration for AT45DB161E-MHF-Y?
The AT45DB161E-MHF-Y supports two page sizes: 512 bytes (binary mode) or 528 bytes (standard DataFlash mode). The default is 528 bytes, but it can be factory pre-configured to 512 bytes. Page size affects addressing, buffer-to-memory transfer behavior, and E²PROM emulation efficiency - users must align firmware logic with the configured mode.
Does AT45DB161E-MHF-Y support true read-while-write operation?
Yes, the AT45DB161E-MHF-Y implements true read-while-write via its two independent 512/528-byte SRAM buffers. While one buffer transfers data to main memory (page program), the other can accept new incoming data - enabling uninterrupted streaming in voice, image, or telemetry applications without host-side buffering overhead.
What is the lowest power state supported by AT45DB161E-MHF-Y?
The AT45DB161E-MHF-Y supports Ultra-Deep Power-Down mode with typical current draw of 400 nA. This state retains full memory content and register settings while minimizing energy use - ideal for battery-backed systems requiring multi-year shelf life or infrequent wake-up events.
How does sector lockdown work on AT45DB161E-MHF-Y?
Sector lockdown on AT45DB161E-MHF-Y is a one-time hardware-enforced security feature: once activated for a sector via the Sector Lockdown Register, that sector becomes permanently read-only. No software command or voltage sequence can reverse it - ensuring immutable storage of boot code or regulatory calibration data.
Is AT45DB161E-MHF-Y compatible with standard SPI controllers?
Yes, AT45DB161E-MHF-Y is fully compatible with standard SPI controllers supporting modes 0 and 3. It uses standard SI/SO/SCK/CS signaling and responds to JEDEC-standard Manufacturer and Device ID reads (0x9F). RapidS™ mode is optional and requires host firmware support for high-speed opcodes (0x0B, 0x1B).
AT45DB161E-MHF-Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UDFN Exposed Pad
- Packaging:
- Tray
- 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-UDFN (5x6)
AT45DB161E-MHF-Y FAQ
1.How can I place an order for AT45DB161E-MHF-Y through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161E-MHF-Y 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-MHF-Y reliable?
The price and inventory of AT45DB161E-MHF-Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DB161E-MHF-Y is usually 5 days.
3.What payment methods are accepted for AT45DB161E-MHF-Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161E-MHF-Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161E-MHF-Y?
AT45DB161E-MHF-Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161E-MHF-Y 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-MHF-Y?
For technical support, including AT45DB161E-MHF-Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161E-MHF-Y requirements.
6.How does Aetrix verify that AT45DB161E-MHF-Y is sourced from the original manufacturer or authorized distributors?
All AT45DB161E-MHF-Y 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-MHF-Y meets industry standards.
7.What is the process for return or replacement of AT45DB161E-MHF-Y?
All AT45DB161E-MHF-Y units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161E-MHF-Y, 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-MHF-Y part is unused and in its original packaging.
Return procedure for AT45DB161E-MHF-Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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