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Renesas AT45DB161E-SHFKA-T
- Part No.:
- AT45DB161E-SHFKA-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DB161E-SHFKA-T.pdf
- Description:
- IC FLASH 16MBIT 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,266
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Product details
Overview
AT45DB161E-SHFKA-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-while-write. It operates from a single 2.3–3.6 V supply and targets embedded firmware storage, voice/image buffering, and E²PROM emulation in space-constrained industrial controllers.
For engineers reviewing the AT45DB161E-SHFKA-T datasheet, AT45DB161E-SHFKA-T pinout, AT45DB161E-SHFKA-T application, or AT45DB161E-SHFKA-T equivalent, key selection criteria include its 85 MHz RapidS timing, ultra-deep power-down current (400 nA), configurable page size, sector lockdown security, and SOIC-8 (0.208") packaging - all critical for low-power, secure, high-throughput serial memory integration.
Technical Context
The AT45DB161E-SHFKA-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 blocking host access. Its RapidS™ mode supports high-frequency continuous reads using opcodes 0Bh and 1Bh, achieving 6 ns clock-to-output delay.
Memory organization comprises 4,096 pages of either 512 or 528 bytes (factory-configurable), plus 512 kbits of 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 program/erase cycles - essential for real-time systems requiring deterministic latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbits (17,301,504 bits) main array + 512 kbits extra capacity - supports firmware images >2 MB in compact serial footprint. |
| Interface | SPI-compatible, modes 0 and 3 - interoperable with standard microcontroller SPI peripherals without custom logic. |
| Max Clock Frequency | 85 MHz (RapidS™ mode) - enables sustained data throughput >8 MB/s for streaming applications. |
| Page Size | User-configurable 512 or 528 bytes (default); factory-settable - balances alignment efficiency and overhead for E²PROM emulation. |
| Power-Down Current | 400 nA typical (Ultra-Deep Power-Down) - extends battery life in always-on sensor nodes or IoT edge devices. |
| Endurance & Retention | 100,000 program/erase cycles per page; 20-year data retention - suitable for field-upgradable industrial firmware. |
| Operating Voltage | 2.3 V–3.6 V or 2.5 V–3.6 V single supply - eliminates level-shifting in mixed-voltage 3.3 V/2.5 V systems. |
Pinout & Package
AT45DB161E-SHFKA-T is packaged in an 8-lead SOIC (0.208" wide, JEDEC MS-012), with pins arranged in standard dual-inline configuration. Pin 1 is marked with a dot or notch; pin numbering proceeds counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; deassertion places device in standby (25 µA) and tri-states SO - enables multi-device SPI bus sharing. |
| SCK | Serial Clock | Input clock synchronizing all SPI transactions; supports up to 85 MHz in RapidS™ mode - defines maximum data rate. |
| 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 read data/status; high-impedance when CS is high - prevents bus contention in multi-slave systems. |
| WP | Write Protect | Hardware sector protection control; low = enable protection, high = disable - provides tamper-resistant firmware lock. |
| RESET | Hardware Reset | Active-low asynchronous reset; returns device to power-on state without cycling VCC - enables safe recovery from hang. |
| VCC | Power Supply | 2.3–3.6 V input; powers core, I/O, and charge pump - no external high-voltage generator required for programming. |
| GND | Ground | Reference for all signals and internal circuitry; must be low-impedance connection to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM Buffers | Two independent 512/528-byte buffers allow simultaneous data reception and main memory reprogramming - eliminates write stalls in continuous logging. |
| RapidS™ High-Speed Read | Supports 85 MHz continuous array reads with 6 ns tV - delivers near-parallel-memory bandwidth over 3-wire SPI. |
| Flexible Erase Granularity | Page (512/528 B), block (4 kB), sector (128 kB), and chip erase options - enables precise wear leveling and partial firmware updates. |
| Hardware Sector Lockdown | Permanent read-only locking of any sector via OTP register - prevents accidental or malicious overwrite of boot code or calibration data. |
| 128-Byte Security Register | 64-byte factory-unique ID + 64-byte user-programmable space - enables device authentication and secure key storage. |
| Program/Erase Suspend | Pause active program/erase to service urgent read requests - guarantees sub-100 µs response time for real-time interrupt handlers. |
Applications
| Firmware Storage | Voice/Image Buffering |
|---|---|
Use Scenario: Storing and updating bootloader and application firmware in industrial PLCs with limited PCB area. IC Role / Device Role / Timing Role: Non-volatile serial memory providing SPI-accessible code storage with in-system reprogrammability. Use Value: Eliminates need for parallel NOR Flash and reduces pin count by >50%, simplifying layout and lowering EMI in noisy factory environments. |
Use Scenario: Capturing and buffering audio samples in smart speaker edge processors before cloud upload. IC Role / Device Role / Timing Role: High-throughput sequential buffer supporting 85 MHz RapidS™ reads during real-time capture. Use Value: Dual-buffer interleaving sustains >7 MB/s write throughput without host CPU intervention, preserving processing bandwidth. |
| E²PROM Emulation | Secure Configuration Storage |
Use Scenario: Replacing discrete EEPROM in medical diagnostic equipment requiring byte-level parameter updates. IC Role / Device Role / Timing Role: Emulates E²PROM via built-in read-modify-write algorithm across 512-byte pages. Use Value: Achieves 100K endurance and 20-year retention at lower cost and smaller footprint than legacy EEPROM. |
Use Scenario: Storing calibrated sensor offsets and cryptographic keys in automotive ADAS modules. IC Role / Device Role / Timing Role: Secure non-volatile storage with hardware sector lockdown and 128-byte OTP register. Use Value: Prevents unauthorized modification of safety-critical parameters via permanent sector lock and unique device ID binding. |
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 (QSPI), no dual buffers, no RapidS™, 133 MHz max (quad mode), 3.3 V only. | Lacks concurrent read-while-write and low-power deep-sleep modes; requires QSPI controller support. | Choose for higher peak bandwidth in QSPI-enabled hosts where buffer interleaving is unnecessary. |
| MX25L1606EM2I-12G | 16 Mbit standard SPI, no RapidS™, 80 MHz max, 2.7–3.6 V, no OTP security register or sector lockdown. | No hardware security features; lacks ultra-deep power-down (400 nA) and buffer-based write acceleration. | Choose for cost-sensitive consumer applications where firmware security and ultra-low sleep current are not required. |
Compared with W25Q16JVSNIQ and MX25L1606EM2I-12G, the AT45DB161E-SHFKA-T uniquely delivers concurrent buffer operation, RapidS™ timing, and hardware-enforced sector lockdown - making it optimal for real-time, secure, low-power embedded firmware storage where deterministic latency and tamper resistance are mandatory.
Availability
AT45DB161E-SHFKA-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration retention, and automotive ADAS sensor calibration requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT45DB161E-SHFKA-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 emphasis on reliability, security, and energy efficiency.
The AT45DB161E belongs to Renesas' DataFlash family, designed specifically for high-reliability serial memory applications demanding concurrent read/write, rapid access, and robust data protection in resource-constrained embedded systems.
FAQ
What is the operating voltage range for the AT45DB161E-SHFKA-T?
The AT45DB161E-SHFKA-T operates from a single supply ranging from 2.3 V to 3.6 V or 2.5 V to 3.6 V, supporting both low-voltage and standard 3.3 V system designs without external level shifters. This dual-range capability ensures compatibility with battery-powered and mains-powered industrial equipment, and the device maintains full functionality-including RapidS™ mode and program/erase-across the entire voltage window. The AT45DB161E-SHFKA-T does not require high-voltage programming inputs.
Does the AT45DB161E-SHFKA-T support true read-while-write operation?
Yes, the AT45DB161E-SHFKA-T supports true concurrent operation via two independent 512/528-byte SRAM buffers. While one buffer accepts new data over SPI, the other can simultaneously transfer content to main memory - enabling uninterrupted data streaming without host CPU polling or wait states. This capability is intrinsic to the AT45DB161E-SHFKA-T's architecture and is confirmed in its datasheet Section 1 and Figure 2 block diagram.
What package type is used for the AT45DB161E-SHFKA-T?
The AT45DB161E-SHFKA-T uses an 8-lead SOIC package with 0.208" body width (JEDEC MS-012, ordering code "SHFKA"). This standard surface-mount package features gull-wing leads, is RoHS-compliant, and supports reflow soldering. It is distinct from the 8-pad UDFN or 11-ball WLCSP variants - the "-SHFKA-T" suffix explicitly denotes the SOIC-8 variant per Renesas' ordering information (DS-AT45DB161E-8782, Section 28.1).
How does the RapidS™ feature improve performance in the AT45DB161E-SHFKA-T?
RapidS™ in the AT45DB161E-SHFKA-T enables continuous array reads at up to 85 MHz using dedicated opcodes (0Bh/1Bh), achieving a 6 ns clock-to-output delay (tV). This doubles effective throughput versus legacy SPI commands and eliminates inter-byte gaps, making it ideal for streaming audio/video or firmware execution. The AT45DB161E-SHFKA-T's RapidS™ mode is fully backward-compatible with standard SPI mode 0/3 timing but delivers measurable latency reduction verified in AC Characteristics Table 19.4.
What security mechanisms does the AT45DB161E-SHFKA-T provide for firmware protection?
The AT45DB161E-SHFKA-T provides hardware-based security including individual sector protection, permanent sector lockdown (via OTP register), and a 128-byte Security Register with 64-byte factory-unique ID and 64-byte user space. Sector lockdown makes protected regions permanently read-only - irreversible even after power cycles. These features are implemented in silicon and documented in Sections 8 and 9 of the AT45DB161E-SHFKA-T datasheet, ensuring tamper-resistant firmware integrity.
AT45DB161E-SHFKA-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:
- -
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR (SLC)
- Memory Size:
- 16Mbit
- Memory Organization:
- 2M x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 4ms
- Access Time:
- 7 ns
- 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-SHFKA-T FAQ
1.How can I place an order for AT45DB161E-SHFKA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161E-SHFKA-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-SHFKA-T reliable?
The price and inventory of AT45DB161E-SHFKA-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-SHFKA-T is usually 5 days.
3.What payment methods are accepted for AT45DB161E-SHFKA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161E-SHFKA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161E-SHFKA-T?
AT45DB161E-SHFKA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161E-SHFKA-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-SHFKA-T?
For technical support, including AT45DB161E-SHFKA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161E-SHFKA-T requirements.
6.How does Aetrix verify that AT45DB161E-SHFKA-T is sourced from the original manufacturer or authorized distributors?
All AT45DB161E-SHFKA-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-SHFKA-T meets industry standards.
7.What is the process for return or replacement of AT45DB161E-SHFKA-T?
All AT45DB161E-SHFKA-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161E-SHFKA-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-SHFKA-T part is unused and in its original packaging.
Return procedure for AT45DB161E-SHFKA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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