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Renesas AT45DB161E-SHFHC-T
- Part No.:
- AT45DB161E-SHFHC-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DB161E-SHFHC-T.pdf
- Description:
- IC FLASH 16MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,683
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Product details
Overview
AT45DB161E-SHFHC-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-SHFHC-T datasheet, AT45DB161E-SHFHC-T pinout, AT45DB161E-SHFHC-T application, or AT45DB161E-SHFHC-T equivalent, key selection criteria include page-size configurability (512 vs. 528 bytes), ultra-low deep power-down current (400 nA), hardware/software sector protection, 128-byte OTP security register, and continuous array read capability across all 4,096 pages.
Technical Context
The AT45DB161E-SHFHC-T implements a sequential-access Flash architecture with two independent SRAM buffers, enabling true interleaved programming: one buffer receives new data while the other transfers content to main memory. Its RapidS™ mode supports high-frequency read commands (0Bh/1Bh opcodes) with 6 ns clock-to-output timing.
It supports flexible erase granularity-page (512/528 B), block (4 kB), sector (128 kB), and chip-wide-with suspend/resume for program/erase operations. Sector lockdown and individual sector protection are enforced via dedicated registers and hardware WP pin control, complemented by a factory-programmed 64-byte unique ID and user-programmable 64-byte OTP space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 16 Mbits (2,097,152 bytes) organized as 4,096 pages × 512 or 528 bytes |
| Interface | SPI-compatible, supports modes 0 and 3; no external address lines required |
| Max clock frequency | 85 MHz (RapidS™ high-speed read); 15 MHz low-power read option |
| Power consumption | 400 nA ultra-deep power-down (typical); 25 µA standby (typical) |
| Endurance & retention | 100,000 program/erase cycles per page; 20-year data retention |
| Page size | User-configurable: 512 bytes (factory pre-set) or 528 bytes (default) |
| Security features | 128-byte OTP security register (64-byte factory ID + 64-byte user space) |
Pinout & Package
AT45DB161E-SHFHC-T is packaged in an 8-pad Ultra-thin DFN (5 × 6 × 0.6 mm) with exposed thermal pad (non-connected or GND). Pin functions are defined per JEDEC-compliant serial Flash interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; places SO in high-impedance when deasserted; controls device entry into standby mode |
| SCK | Serial Clock | Input clock synchronizing all SPI transactions; supports up to 85 MHz in RapidS™ mode |
| SI | Serial Input | Data input for commands, addresses, and write data; sampled on SCK rising edge (mode 0) or falling edge (mode 3) |
| SO | Serial Output | Data output for read operations; tri-stated when CS is high; tV ≤ 6 ns max clock-to-output delay |
| WP | Write Protect | Hardware sector protection enable; low = protection active; overrides software protection settings |
| RESET | Reset Input | Active-low hardware reset; initiates internal state machine reset without power cycle |
| VCC | Power Supply | Single 2.3–3.6 V or 2.5–3.6 V supply; powers core, I/O, and charge pump |
| GND | Ground | Reference for all signals and power; thermal pad may be connected to GND for improved thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers | Two independent 512/528-byte buffers enable simultaneous receive-and-program, eliminating write latency bottlenecks in streaming applications |
| RapidS™ interface | High-speed read mode (0Bh/1Bh opcodes) delivers 85 MHz throughput with 6 ns tV, reducing firmware load time by >3× vs. legacy SPI |
| Configurable page size | Factory-set 512-byte or default 528-byte pages allow optimization for alignment-sensitive file systems or legacy DataFlash compatibility |
| Program/erase suspend | Interrupt ongoing page/block/sector erase or program to service urgent reads or writes, then resume - critical for real-time logging |
| Sector lockdown | Irreversible hardware lock of any sector to permanent read-only status, preventing accidental or malicious firmware overwrite |
| OTP security register | 128-byte one-time programmable space with 64-byte factory-unique ID enables secure device authentication and traceability |
Applications
| Firmware Storage | Voice/Image Buffering |
|---|---|
|
Use Scenario: Storing boot code and field-upgradable firmware images in industrial PLCs with limited PCB area. IC Role / Device Role / Timing Role: Non-volatile, serially accessed program memory replacing parallel NOR Flash; supports in-system reprogramming without high-voltage programming. Use Value: Reduces pin count by 60% vs. parallel Flash; 400 nA deep power-down extends battery life in maintenance-free deployments. |
Use Scenario: Capturing and buffering audio samples in medical ultrasound handheld devices before DSP processing. IC Role / Device Role / Timing Role: High-throughput sequential data sink using RapidS™ 85 MHz reads and dual-buffer interleaving. Use Value: Enables continuous 16-bit/48 kHz audio capture without dropouts; 512-byte page size aligns with DMA burst lengths. |
| E²PROM Emulation | Secure Configuration Storage |
|
Use Scenario: Replacing discrete EEPROM in smart meter designs requiring byte-level updates to calibration tables. IC Role / Device Role / Timing Role: Emulates bit/byte alterability via built-in read-modify-write sequence; no external controller logic needed. Use Value: Eliminates need for external EEPROM; 100K-cycle endurance exceeds typical meter lifetime requirements. |
Use Scenario: Storing cryptographic keys and device-specific credentials in networked HVAC controllers. IC Role / Device Role / Timing Role: Secure non-volatile storage leveraging OTP register, sector lockdown, and hardware WP pin. Use Value: Prevents unauthorized key extraction or firmware tampering; factory-programmed UID enables secure provisioning. |
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 W25Q16JW | 16 Mbit Quad SPI (QSPI), no dual buffers; 133 MHz max clock; lacks RapidS™ and suspend/resume | Higher throughput in QSPI-configured hosts; unsuitable for true read-while-write or real-time suspend use cases | Select if host supports QSPI and concurrent access is not required; verify absence of buffer-dependent firmware logic |
| Microchip SST26VF016B | 16 Mbit octal DTR SPI; 104 MHz; includes configurable dummy cycles but no SRAM buffers or sector lockdown | Better bandwidth in octal-DTR systems; no hardware-enforced read-only sectors or OTP security register | Prefer for high-speed boot-from-Flash where security and concurrent write are secondary to raw speed |
Compared with W25Q16JW and SST26VF016B, the AT45DB161E-SHFHC-T uniquely delivers dual-buffer concurrency, hardware sector lockdown, and 400 nA ultra-deep power-down - making it optimal for battery-powered, safety-critical, or streaming-data embedded systems where reliability and security outweigh pure bandwidth needs.
Availability
AT45DB161E-SHFHC-T is available at Aetrix Electronics and suitable for industrial control firmware storage, medical device voice buffering, smart meter E²PROM emulation, and secure configuration storage requiring stable component supply and long-term lifecycle support.
Supply support for AT45DB161E-SHFHC-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 applications.
The AT45DB161E belongs to Renesas' DataFlash family, designed specifically for high-reliability, low-pin-count, low-voltage serial Flash applications requiring concurrent access, robust security, and ultra-low power states.
FAQ
What is the default page size for AT45DB161E-SHFHC-T, and can it be changed?
The AT45DB161E-SHFHC-T defaults to 528-byte pages but supports factory pre-configuration for 512-byte pages. Page size is set during manufacturing and cannot be altered in-system. The selected size determines addressing format and must match host firmware expectations - confirmed via status register bit PSZ (bit 6) and command table usage.
Does AT45DB161E-SHFHC-T support true read-while-write operation?
Yes, the AT45DB161E-SHFHC-T supports true concurrent operation using its two independent SRAM buffers: while one buffer is being written via SI, the other can transfer data to main memory or be read via SO. This eliminates write latency in continuous data streams and is enabled without host-side arbitration logic.
How does the sector lockdown feature work on AT45DB161E-SHFHC-T?
Sector lockdown on AT45DB161E-SHFHC-T is a one-time hardware fuse that permanently disables write/erase access to a selected sector. Once activated via the Sector Lockdown command (3Ah), the sector becomes read-only for the device's lifetime - even after power cycles or RESET. It requires WP pin assertion and is irreversible, providing tamper-proof firmware partitioning.
What is the purpose of the 128-byte OTP security register in AT45DB161E-SHFHC-T?
The 128-byte OTP security register in AT45DB161E-SHFHC-T contains 64 bytes factory-programmed with a unique device identifier and 64 bytes user-programmable for keys, certificates, or calibration data. Once written, OTP bytes cannot be erased or rewritten - enabling secure device authentication, anti-cloning, and trusted provisioning in regulated environments.
Can AT45DB161E-SHFHC-T enter ultra-low-power states, and what are the wake-up requirements?
Yes, AT45DB161E-SHFHC-T supports Ultra-Deep Power-Down mode with 400 nA typical current draw. Wake-up requires CS low followed by a valid command (e.g., Status Register Read D7h) within tDPD (max 100 µs). No external reset or voltage ramp is needed - the device resumes operation autonomously upon command receipt.
AT45DB161E-SHFHC-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-SHFHC-T FAQ
1.How can I place an order for AT45DB161E-SHFHC-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161E-SHFHC-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-SHFHC-T reliable?
The price and inventory of AT45DB161E-SHFHC-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-SHFHC-T is usually 5 days.
3.What payment methods are accepted for AT45DB161E-SHFHC-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161E-SHFHC-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161E-SHFHC-T?
AT45DB161E-SHFHC-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161E-SHFHC-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-SHFHC-T?
For technical support, including AT45DB161E-SHFHC-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161E-SHFHC-T requirements.
6.How does Aetrix verify that AT45DB161E-SHFHC-T is sourced from the original manufacturer or authorized distributors?
All AT45DB161E-SHFHC-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-SHFHC-T meets industry standards.
7.What is the process for return or replacement of AT45DB161E-SHFHC-T?
All AT45DB161E-SHFHC-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161E-SHFHC-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-SHFHC-T part is unused and in its original packaging.
Return procedure for AT45DB161E-SHFHC-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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