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Renesas AT45DB161E-MHF2B-T
- Part No.:
- AT45DB161E-MHF2B-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT45DB161E-MHF2B-T.pdf
- Description:
- IC FLASH 16MBIT SPI 85MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:32,371
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Product details
Overview
AT45DB161E-MHF2B-T from Renesas Electronics is a 16-Mbit serial DataFlash memory with extra 512-kbit security space, supporting SPI modes 0 and 3, 85 MHz max clock rate, 6 ns clock-to-output time, and dual 512/528-byte SRAM buffers for concurrent read/write operation. It enables continuous data streaming in embedded voice, firmware storage, and industrial logging systems.
For engineers reviewing the AT45DB161E-MHF2B-T datasheet, AT45DB161E-MHF2B-T pinout, AT45DB161E-MHF2B-T application, or AT45DB161E-MHF2B-T equivalent, key selection criteria include RapidS™ high-speed read capability, ultra-deep power-down current (400 nA), page/block/sector/chip erase flexibility, OTP security register, and SOIC-8 (0.208" wide) packaging compatibility with legacy footprint designs.
Technical Context
The AT45DB161E-MHF2B-T implements a sequential-access Flash architecture with two independent SRAM buffers, enabling true interleaved programming: one buffer accepts incoming data while the other transfers to main memory. Its RapidS™ mode supports high-frequency continuous array reads using opcodes 0Bh and 1Bh, achieving up to 85 MHz operation with tV ≤ 6 ns.
It features hardware- and software-controlled sector protection, including individual sector lockdown (permanent read-only), plus a 128-byte OTP security register-64 bytes factory-programmed with unique ID and 64 bytes user-programmable. Erase suspend/resume and read-modify-write operations are fully supported without external intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 16 Mbits (17,301,504 bits) organized as 4,096 pages × 512 or 528 bytes |
| Interface | SPI-compatible, supports modes 0 and 3; no parallel address/data bus required |
| Max clock frequency | 85 MHz for RapidS™ high-speed reads; 15 MHz for low-power active reads |
| Access timing | 6 ns maximum clock-to-output (tV), enabling tight timing margins in high-speed controllers |
| Power consumption | 400 nA typical ultra-deep power-down current; 25 µA standby; 7 mA active read @15 MHz |
| Data retention & endurance | 20 years retention; minimum 100,000 program/erase cycles per page |
| Operating voltage | Single supply: 2.3 V–3.6 V or 2.5 V–3.6 V - compatible with 2.5 V and 3.3 V systems |
Pinout & Package
AT45DB161E-MHF2B-T uses an 8-lead JEDEC SOIC package (0.208" wide), pin-compatible with industry-standard 8-pin serial Flash footprints. The package is green (Pb/Halide-free/RoHS compliant) and suitable for reflow soldering.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; places device in standby (high-Z SO) when deasserted |
| SCK | Serial Clock | Input clock synchronizing all SPI transactions; supports up to 85 MHz in RapidS™ mode |
| 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; tri-stated when CS is high; tV ≤ 6 ns ensures timing closure at 85 MHz |
| WP | Write Protect | Hardware-enabled sector protection control; low = protection enabled per sector lock register |
| RESET | Hardware Reset | Active-low asynchronous reset; returns device to power-on state and clears status flags |
| 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; must be low-impedance for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers (512/528 bytes each) | Enables simultaneous data reception and main memory reprogramming - eliminates write latency in streaming applications |
| RapidS™ high-speed read mode | Supports 85 MHz continuous array reads via dedicated opcodes (0Bh/1Bh), doubling throughput vs. legacy E8h mode |
| User-configurable page size | Factory-set to 528 bytes (default) or 512 bytes; determines addressing granularity and buffer alignment |
| Multi-level erase hierarchy | Page (512/528 B), block (4 kB), sector (128 kB), and chip (16 Mbit) erase options - optimizes wear leveling and update granularity |
| OTP Security Register (128 bytes) | 64-byte factory-unique ID + 64-byte user-programmable space - enables secure boot, device authentication, and firmware binding |
| Program/Erase Suspend & Resume | Allows interrupting long erase/write operations to service urgent reads - critical for real-time system responsiveness |
Applications
| Firmware Storage | Voice/Data Logging |
|---|---|
Use Scenario: Storing bootloader, application firmware, and configuration parameters in microcontroller-based industrial controllers. IC Role / Device Role / Timing Role: Non-volatile serial code storage with fast read access and in-system reprogrammability via SPI. Use Value: Eliminates need for external parallel Flash or EEPROM; 85 MHz RapidS™ enables sub-100 ms firmware load times. |
Use Scenario: Capturing sensor telemetry or audio snippets in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Low-power sequential data sink with dual-buffer interleaving to sustain continuous write streams. Use Value: 400 nA ultra-deep power-down extends multi-year battery life; page erase minimizes energy per write. |
| Secure Boot Authentication | Industrial HMI Configuration |
Use Scenario: Verifying firmware integrity and device identity during power-up in medical or automotive ECUs. IC Role / Device Role / Timing Role: Secure storage of cryptographic keys and immutable device identifiers in OTP register. Use Value: Factory-programmed 64-byte unique ID prevents cloning; sector lockdown prevents tampering with security data. |
Use Scenario: Persisting display layouts, language packs, and calibration offsets in human-machine interface panels. IC Role / Device Role / Timing Role: High-reliability parameter storage with sector protection to prevent accidental overwrite of critical settings. Use Value: Individual sector lockdown ensures UI configuration remains intact across firmware updates and field servicing. |
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-MHF2B-T | Predecessor generation; lacks RapidS™ mode, max clock 66 MHz, no ultra-deep power-down (1 µA vs. 400 nA) | Lower performance and higher quiescent current; suitable only where legacy compatibility or cost sensitivity outweighs speed/power gains | Select AT45DB161E-MHF2B-T for new designs requiring >66 MHz operation or <1 µA deep sleep. |
| W25Q16JVSNIQ | Quad SPI (QSPI) interface; 133 MHz clock; no dual SRAM buffers or RapidS™; standard SFDP-compliant command set | Better raw bandwidth but no concurrent buffer operation; requires QSPI controller support; no OTP security register | Choose W25Q16JVSNIQ when system has QSPI hardware and prioritizes density/bandwidth over streaming latency or security features. |
Compared with AT45DB161D-MHF2B-T and W25Q16JVSNIQ, the AT45DB161E-MHF2B-T uniquely combines dual-buffer interleaving, RapidS™ high-speed reads, ultra-low deep-power-down, and factory-programmed OTP security - making it optimal for resource-constrained, security-aware, streaming-data embedded systems.
Availability
AT45DB161E-MHF2B-T is available at Aetrix Electronics and suitable for firmware storage, voice/data logging, secure boot authentication, and industrial HMI configuration requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT45DB161E-MHF2B-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, with deep expertise in Flash memory and microcontroller integration.
The AT45DB161E-MHF2B-T belongs to Renesas' DataFlash® family, designed specifically for high-reliability, low-pin-count serial data storage in space- and power-constrained embedded systems requiring concurrent read/write and security features.
FAQ
What is the page size configuration of the AT45DB161E-MHF2B-T?
The AT45DB161E-MHF2B-T is factory pre-configured for a standard page size of 528 bytes (default), but supports user-selectable 512-byte pages via configuration commands. This affects addressing, buffer alignment, and command sequences - both configurations are fully supported in the AT45DB161E-MHF2B-T datasheet and validated in production.
Does the AT45DB161E-MHF2B-T support true concurrent read and write operations?
Yes - the AT45DB161E-MHF2B-T features two independent 512/528-byte SRAM buffers that allow simultaneous data reception into one buffer while the other buffer transfers data to main memory. This interleaving eliminates write latency and enables continuous data streaming, a core capability of the AT45DB161E-MHF2B-T architecture.
What is the purpose of the RapidS™ mode in the AT45DB161E-MHF2B-T?
RapidS™ mode in the AT45DB161E-MHF2B-T enables high-speed continuous array reads at up to 85 MHz using dedicated opcodes (0Bh and 1Bh), reducing clock-to-output delay to ≤6 ns. It delivers significantly higher throughput than legacy read commands (e.g., E8h), making the AT45DB161E-MHF2B-T ideal for time-critical firmware loading and real-time data retrieval.
How does the OTP Security Register function in the AT45DB161E-MHF2B-T?
The AT45DB161E-MHF2B-T includes a 128-byte OTP Security Register: 64 bytes are factory-programmed with a unique device identifier, and 64 bytes are user-programmable. Once written, OTP locations cannot be erased - enabling secure boot key storage, device authentication, and firmware binding in the AT45DB161E-MHF2B-T.
What power-saving modes does the AT45DB161E-MHF2B-T support?
The AT45DB161E-MHF2B-T offers three low-power states: Standby (25 µA typical), Deep Power-Down (5 µA typical), and Ultra-Deep Power-Down (400 nA typical). Entry/exit is controlled via dedicated SPI commands, and all retain memory contents - critical for battery-operated devices using the AT45DB161E-MHF2B-T.
AT45DB161E-MHF2B-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 16Mbit
- Memory Organization:
- 512 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-MHF2B-T FAQ
1.How can I place an order for AT45DB161E-MHF2B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161E-MHF2B-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-MHF2B-T reliable?
The price and inventory of AT45DB161E-MHF2B-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-MHF2B-T is usually 5 days.
3.What payment methods are accepted for AT45DB161E-MHF2B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161E-MHF2B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161E-MHF2B-T?
AT45DB161E-MHF2B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161E-MHF2B-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-MHF2B-T?
For technical support, including AT45DB161E-MHF2B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161E-MHF2B-T requirements.
6.How does Aetrix verify that AT45DB161E-MHF2B-T is sourced from the original manufacturer or authorized distributors?
All AT45DB161E-MHF2B-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-MHF2B-T meets industry standards.
7.What is the process for return or replacement of AT45DB161E-MHF2B-T?
All AT45DB161E-MHF2B-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161E-MHF2B-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-MHF2B-T part is unused and in its original packaging.
Return procedure for AT45DB161E-MHF2B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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