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Renesas AT45DB161E-SHF-T
- Part No.:
- AT45DB161E-SHF-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DB161E-SHF-T.pdf
- Description:
- IC FLASH 16MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,482
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Product details
Overview
AT45DB161E-SHF-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/write operations. It operates from a single 2.3–3.6 V or 2.5–3.6 V supply and supports industrial temperature range (−40°C to +85°C), targeting embedded firmware storage and real-time data logging in space-constrained systems.
For engineers reviewing the AT45DB161E-SHF-T datasheet, AT45DB161E-SHF-T pinout, AT45DB161E-SHF-T application, or AT45DB161E-SHF-T equivalent, key selection criteria include its dual-buffer interleaving capability, ultra-deep power-down current (400 nA typical), programmable page size (512 vs. 528 bytes), sector lockdown security, and JEDEC-standard Manufacturer/Device ID support - all critical for low-power, secure, and field-upgradable designs.
Technical Context
The AT45DB161E-SHF-T implements a sequential-access Flash architecture with two independent SRAM buffers, enabling true background programming: while one buffer receives incoming data via SPI, the other transfers content to main memory without halting host communication. Its RapidS™ mode delivers 85 MHz clock-to-output timing (tV ≤ 6 ns) and supports legacy and high-frequency continuous array read opcodes (0Bh, 1Bh, E8h).
Memory organization comprises 4,096 pages of 512 or 528 bytes each (user-configurable at factory or runtime), plus 512 kbits extra capacity. Erase granularity spans page (512/528 B), block (4 kB), sector (128 kB), and full chip (16 Mbits), with suspend/resume functionality for program/erase operations - essential for deterministic real-time system behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbits (17,301,504 bits) main array + 512 kbits extra capacity |
| Page Size | Factory-configurable 512 bytes or 528 bytes per page; enables optimized firmware partitioning or E2PROM emulation |
| Max Clock Frequency | 85 MHz in RapidS™ mode; enables high-throughput streaming without parallel bus overhead |
| Power-Down Current | 400 nA typical in Ultra-Deep Power-Down; extends battery life in always-on sensor nodes |
| Endurance & Retention | 100,000 program/erase cycles per page minimum; 20-year data retention at +85°C |
| Operating Voltage | Single 2.3–3.6 V or 2.5–3.6 V supply; eliminates need for voltage translators in mixed-voltage systems |
| Temperature Range | −40°C to +85°C industrial grade; validated for automotive infotainment and industrial PLCs |
Pinout & Package
AT45DB161E-SHF-T is packaged in an 8-pad Ultra-thin DFN (5 × 6 × 0.6 mm) with exposed thermal pad (non-connected or GND-tied). Pin functions are defined per JEDEC-compliant SPI interface with Chip Select control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; places SO in high-Z when deasserted; controls device selection in multi-drop SPI bus |
| SCK | Serial Clock | Input clock synchronizing all SPI transactions; supports modes 0 and 3 polarity/phase configurations |
| SI | Serial Input | Data input for commands, addresses, and write data; sampled on SCK rising/falling edge per mode |
| SO | Serial Output | Tri-state output for read data and status; high-impedance when CS is deasserted |
| WP | Write Protect | Hardware sector protection enable; locks sectors when asserted high (active-high logic) |
| RESET | Hardware Reset | Asynchronous active-low reset; forces device into known state without power cycle |
| VCC | Power Supply | 2.3–3.6 V or 2.5–3.6 V single supply; powers core, I/O, and charge pump circuits |
| GND | Ground | Reference for all signals and internal circuitry; must be low-impedance for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM Buffers | Two independent 512/528-byte buffers allow simultaneous data reception and main memory reprogramming - eliminating write latency bottlenecks in continuous data streams |
| RapidS™ Interface | 85 MHz max clock rate with 6 ns tV ensures sub-10 ns effective read latency; outperforms standard SPI Flash in throughput-critical boot and logging applications |
| Flexible Erase Granularity | Page (512/528 B), block (4 kB), sector (128 kB), and chip erase options enable precise wear leveling and partial firmware updates without full reflash |
| Hardware Sector Lockdown | Permanent read-only locking of any sector via OTP register; prevents accidental or malicious overwrite of bootloader or calibration data |
| Ultra-Low Power Modes | 400 nA Ultra-Deep Power-Down and 5 µA Deep Power-Down currents enable multi-year battery operation in IoT edge sensors |
| Security Register | 128-byte OTP register with 64-byte factory-unique ID and 64-byte user-programmable space for cryptographic keys or device binding |
Applications
| Firmware Storage | Real-Time Data Logging |
|---|---|
Use Scenario: Storing boot code, application firmware, and configuration parameters in microcontroller-based edge devices with no external parallel memory interface. IC Role / Device Role / Timing Role: Serial nonvolatile memory providing fast, reliable, and secure code execution storage with rapid startup from reset. Use Value: Dual-buffer architecture allows background firmware update verification while maintaining system responsiveness; RapidS™ enables <100 ms boot time from cold start. |
Use Scenario: Capturing sensor readings, event timestamps, and diagnostic logs in battery-powered environmental monitors operating unattended for months. IC Role / Device Role / Timing Role: High-endurance sequential write buffer with low-power deep-sleep modes synchronized to wake-up triggers. Use Value: 100,000-cycle endurance and 400 nA ultra-deep power-down current extend operational lifetime beyond 5 years on coin-cell batteries. |
| Secure Bootloader Storage | E2PROM Emulation |
Use Scenario: Hosting immutable bootloader code and public-key signatures in medical devices requiring FDA-grade traceability and anti-tampering. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile storage with hardware sector lockdown and unique factory ID for cryptographic binding. Use Value: Sector lockdown prevents runtime modification; 64-byte factory-unique ID enables device-specific key derivation and zero-touch provisioning. |
Use Scenario: Replacing discrete EEPROM in smart meters and industrial controllers needing byte-level alterability for calibration constants and runtime counters. IC Role / Device Role / Timing Role: Emulated EEPROM using three-step read-modify-write with automatic page management and wear leveling. Use Value: Eliminates external EEPROM component; leverages built-in page erase and buffer transfer to achieve >1M effective write cycles via software-managed wear leveling. |
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, no dual buffers or RapidS™; 1.8 V supply only | Lacks concurrent read/write; requires QSPI controller; better for high-speed code XIP, not streaming data capture | Select if system uses Quad SPI interface and prioritizes execute-in-place over background writes |
| Macronix MX25L1633FZUI | 16 Mbit standard SPI NOR Flash; 104 MHz max, no SRAM buffers, no sector lockdown, 2.7–3.6 V only | No hardware security features; no ultra-low power modes; limited erase flexibility (no page erase) | Choose for cost-sensitive, non-security-critical applications where industrial temp range and basic SPI compatibility suffice |
Compared with W25Q16JVSNIQ and MX25L1633FZUI, the AT45DB161E-SHF-T uniquely combines dual-buffer concurrency, hardware sector lockdown, and 400 nA ultra-deep power-down - making it optimal for secure, low-power, streaming-data applications where background writes and tamper resistance are mandatory.
Availability
AT45DB161E-SHF-T is available at Aetrix Electronics and suitable for firmware storage, real-time data logging, secure bootloader hosting, and E2PROM emulation requiring stable component supply across industrial, medical, and IoT design cycles.
Supply support for AT45DB161E-SHF-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 microcontrollers, analog, power, and memory solutions for automotive, industrial, and enterprise applications.
The AT45DB161E belongs to Renesas' DataFlash family, engineered specifically for high-reliability, low-pin-count, low-voltage serial memory applications demanding concurrent access, security, and ultra-low power consumption.
FAQ
What is the default page size configuration for AT45DB161E-SHF-T?
The AT45DB161E-SHF-T is factory pre-configured for 528-byte pages by default, but supports 512-byte pages via buffer configuration command (03h). This dual-page-size capability enables flexible trade-offs between storage efficiency (512 B) and metadata overhead (528 B), and is confirmed in the device's Buffer and Page Size Configuration section (Section 12) of the datasheet.
Does AT45DB161E-SHF-T support true concurrent read and write operations?
Yes - AT45DB161E-SHF-T implements true concurrency 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. This interleaving eliminates write stalls and is explicitly documented in the Features and Description sections of the datasheet.
How does the sector lockdown feature work on AT45DB161E-SHF-T?
AT45DB161E-SHF-T provides permanent sector lockdown via a dedicated command (3Ah) that writes to the Sector Lockdown Register. Once locked, a sector becomes read-only for life - even after power cycles or resets. The 128-byte Security Register includes dedicated lockdown status bits, and this behavior is verified in Section 9.1 and Figure 11 of the datasheet.
What power-saving modes does AT45DB161E-SHF-T offer, and how low is the current draw?
AT45DB161E-SHF-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 is controlled via command (B9h), and resume requires CS pulse. These values are specified in Section 11 and Table 19.4 of the datasheet under DC Characteristics.
Is AT45DB161E-SHF-T compatible with standard SPI controllers?
Yes - AT45DB161E-SHF-T is fully SPI mode 0 and mode 3 compatible, supporting standard 3-wire (CS/SCK/SI/SO) operation without requiring proprietary hardware. All command sequences, timing diagrams, and opcode tables (e.g., Tables 27–31) align with JEDEC SPI conventions, and interoperability is confirmed across Renesas application notes and reference schematics.
AT45DB161E-SHF-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-SHF-T FAQ
1.How can I place an order for AT45DB161E-SHF-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161E-SHF-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-SHF-T reliable?
The price and inventory of AT45DB161E-SHF-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-SHF-T is usually 5 days.
3.What payment methods are accepted for AT45DB161E-SHF-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161E-SHF-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161E-SHF-T?
AT45DB161E-SHF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161E-SHF-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-SHF-T?
For technical support, including AT45DB161E-SHF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161E-SHF-T requirements.
6.How does Aetrix verify that AT45DB161E-SHF-T is sourced from the original manufacturer or authorized distributors?
All AT45DB161E-SHF-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-SHF-T meets industry standards.
7.What is the process for return or replacement of AT45DB161E-SHF-T?
All AT45DB161E-SHF-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161E-SHF-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-SHF-T part is unused and in its original packaging.
Return procedure for AT45DB161E-SHF-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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