My Inquiry
My Account
Renesas AT45DB161E-MHF-T
- Part No.:
- AT45DB161E-MHF-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT45DB161E-MHF-T.pdf
- Description:
- IC FLASH 16MBIT SPI 85MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:45,407
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT45DB161E-MHF-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. It operates from a single 2.3–3.6 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-MHF-T datasheet, AT45DB161E-MHF-T pinout, AT45DB161E-MHF-T application, or AT45DB161E-MHF-T equivalent, key selection criteria include its 85 MHz RapidS™ read speed, ultra-low 400 nA deep power-down current, configurable 512/528-byte page size, hardware/software sector protection, and dual-buffer interleaved programming capability for continuous streaming.
Technical Context
The AT45DB161E-MHF-T implements a serial Flash architecture with two independent SRAM buffers that enable simultaneous buffer write and main memory reprogramming-critical for uninterrupted data capture. Its RapidS™ mode uses optimized command sequences (e.g., 0Bh/1Bh opcodes) to achieve 85 MHz clock rates while maintaining SPI mode 0/3 compatibility.
Memory organization comprises 4,096 pages of 512 or 528 bytes (factory-configurable), plus 128-byte OTP security register with 64-byte factory-unique ID. Sector protection, lockdown, and chip-level erase (16 Mbits) are controlled via dedicated commands (e.g., 32h, 35h, C7h), with suspend/resume support for program/erase operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbits (17,301,504 bits) organized as 4,096 × 512/528-byte pages |
| Interface | SPI-compatible, modes 0 and 3; supports RapidS™ for 85 MHz operation |
| Supply Voltage | Single 2.3 V–3.6 V or 2.5 V–3.6 V rail; no high-voltage programming required |
| Power Consumption | 400 nA ultra-deep power-down (typical); 7 mA active read @15 MHz (typical) |
| Endurance & Retention | 100,000 program/erase cycles per page; 20-year data retention |
| Operating Temperature | −40°C to +85°C (full industrial range) |
| Security Features | 128-byte OTP security register (64-byte factory ID + 64-byte user-programmable) |
Pinout & Package
AT45DB161E-MHF-T is packaged in an 8-pad Ultra-thin DFN (5 mm × 6 mm × 0.6 mm) with exposed thermal pad (non-connected or GND-tied). Pin functions are defined per JEDEC-standard SOIC/DFN layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; places device in standby (high-Z SO) when deasserted |
| SCK | Serial Clock | Input timing reference for SPI transfers; supports up to 85 MHz in RapidS™ mode |
| SI | Serial Input | Data input for commands, addresses, and buffer writes; sampled on SCK rising edge (mode 0) |
| SO | Serial Output | Data output for reads and status; tri-stated when CS is high |
| WP | Write Protect | Hardware sector protection control; low = enable protection, high = disable |
| RESET | Reset Input | Active-low hardware reset; initiates internal reset sequence and clears status flags |
| VCC | Power Supply | 2.3–3.6 V single supply for all operations (read, program, erase) |
| GND | Ground | Reference return path; connects to exposed DFN pad (optional GND tie) |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM Buffers | Two independent 512/528-byte buffers enable concurrent data reception and main memory reprogramming-eliminating write latency in continuous streaming applications |
| RapidS™ High-Speed Read | Up to 85 MHz clock rate with sub-6 ns clock-to-output delay (tV), enabling >10 MB/s sustained read throughput |
| Flexible Page Size | User-configurable or factory-set 512-byte (binary-aligned) or 528-byte (DataFlash standard) pages-optimizing alignment for file systems or legacy firmware |
| Multi-Level Erase Granularity | Page (512/528 B), block (4 kB), sector (128 kB), and full-chip (16 Mbits) erase options-minimizing wear and enabling selective updates |
| Hardware Sector Lockdown | Permanent read-only locking of any sector via OTP register; prevents accidental or malicious overwrite of critical boot code or calibration data |
| Ultra-Low Power Modes | 400 nA ultra-deep power-down and 5 µA deep power-down currents-extending battery life in always-on sensor nodes and portable devices |
Applications
| Firmware Storage | Data Logging |
|---|---|
Use Scenario: Storing bootloader, application firmware, and configuration parameters in microcontroller-based edge devices. IC Role / Device Role / Timing Role: Non-volatile serial Flash memory providing sequential access to executable code and static assets via SPI. Use Value: Dual-buffer architecture allows firmware update while maintaining runtime execution; 20-year data retention ensures field-deployed reliability. |
Use Scenario: Capturing sensor readings, telemetry, or event logs in industrial monitoring systems with intermittent connectivity. IC Role / Device Role / Timing Role: High-endurance sequential storage buffer supporting continuous write streams at up to 85 MHz read speed. Use Value: Page erase granularity (512/528 B) enables efficient circular buffer management; 100,000-cycle endurance supports daily log rotation over 27 years. |
| Secure Boot Configuration | Audio/Imaging Buffer |
Use Scenario: Storing immutable root-of-trust keys, secure boot manifests, and factory-calibrated parameters in medical or automotive ECUs. IC Role / Device Role / Timing Role: OTP-secured storage with hardware lockdown for tamper-resistant, read-only critical data. Use Value: 128-byte OTP register includes 64-byte factory-unique ID for device authentication; sector lockdown prevents post-deployment modification. |
Use Scenario: Temporary buffering of compressed audio frames or image tiles in portable media players or IoT cameras. IC Role / Device Role / Timing Role: Dual SRAM buffers act as scratchpad memory for rapid data staging before Flash commit. Use Value: Interleaved buffer-to-memory transfers sustain >5 MB/s write throughput without CPU intervention; low-power modes reduce idle consumption. |
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) interface; no dual SRAM buffers; 133 MHz max clock; no RapidS™ or page-size configurability | Lacks concurrent buffer/main memory operation; requires external logic for E2PROM emulation | Preferred where QSPI bandwidth >85 MHz is needed and dual-buffer streaming is unnecessary |
| Macronix MX25L1633F | 16 Mbit standard SPI; 104 MHz max clock; no RapidS™; no OTP security register or sector lockdown | No hardware-enforced read-only sectors; limited security features for boot-critical use cases | Cost-optimized alternative when industrial temp range and basic SPI compatibility suffice |
Compared with W25Q16JW and MX25L1633F, the AT45DB161E-MHF-T uniquely delivers dual-buffer interleaving, RapidS™-enabled 85 MHz reads, factory-programmed unique ID, and hardware sector lockdown-making it optimal for secure, streaming-capable firmware and data storage where deterministic low-latency writes and tamper resistance are required.
Availability
AT45DB161E-MHF-T is available at Aetrix Electronics and suitable for firmware storage, industrial data logging, secure boot configuration, and audio/imaging buffering requiring stable component supply across long-lifecycle embedded programs.
Supply support for AT45DB161E-MHF-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-MHF-T belongs to Renesas' DataFlash family-designed specifically for high-reliability, low-pin-count serial Flash applications demanding concurrent buffer access, rapid sequential reads, and robust security features in resource-constrained systems.
FAQ
What is the maximum operating frequency of the AT45DB161E-MHF-T in RapidS™ mode?
The AT45DB161E-MHF-T supports up to 85 MHz in RapidS™ mode using opcodes 0Bh or 1Bh, achieving sub-6 ns clock-to-output timing (tV). This enables sustained read throughput exceeding 10 MB/s-significantly faster than standard SPI Flash devices operating at ≤50 MHz. The AT45DB161E-MHF-T maintains full backward compatibility with legacy SPI mode 0/3 commands at lower frequencies.
Does the AT45DB161E-MHF-T support true byte-level writes like EEPROM?
No, the AT45DB161E-MHF-T does not support direct byte-level writes. However, it implements a self-contained three-step read-modify-write operation that emulates EEPROM functionality at the byte or bit level. This process uses the dual SRAM buffers to load a page, modify target bytes, and rewrite the entire page-enabling E2PROM-like behavior without external controllers. The AT45DB161E-MHF-T guarantees 100,000 program/erase cycles per page for this use case.
How is page size configured on the AT45DB161E-MHF-T?
Page size on the AT45DB161E-MHF-T is factory-configured as either 512 bytes (binary-aligned) or 528 bytes (standard DataFlash format) and cannot be changed in-system. Configuration is set during wafer sort and verified via status register bit PS (Page Size). The AT45DB161E-MHF-T datasheet specifies distinct addressing sequences and command behaviors for each mode-requiring firmware to detect and adapt to the installed variant.
What security mechanisms does the AT45DB161E-MHF-T provide beyond sector protection?
Beyond software/hardware sector protection, the AT45DB161E-MHF-T includes a 128-byte One-Time Programmable (OTP) security register: 64 bytes are factory-programmed with a unique device identifier, and 64 bytes are user-programmable for keys or certificates. It also supports permanent sector lockdown-irreversibly setting any sector to read-only via OTP fuse. These features are enforced at the silicon level and require no external crypto engine. The AT45DB161E-MHF-T implements these protections without performance penalty during normal operation.
Can the AT45DB161E-MHF-T operate reliably in industrial temperature environments?
Yes, the AT45DB161E-MHF-T is fully specified for the industrial temperature range of −40°C to +85°C. All electrical characteristics-including 85 MHz RapidS™ operation, 400 nA ultra-deep power-down current, and 100,000-cycle endurance-are guaranteed across this range. The device uses Green (Pb/Halide-free/RoHS-compliant) packaging and meets JEDEC standards for thermal cycling and moisture sensitivity-ensuring long-term reliability in harsh industrial deployments. The AT45DB161E-MHF-T has been validated for continuous operation under full industrial thermal stress.
AT45DB161E-MHF-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:
- 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-T FAQ
1.How can I place an order for AT45DB161E-MHF-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161E-MHF-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-MHF-T reliable?
The price and inventory of AT45DB161E-MHF-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-MHF-T is usually 5 days.
3.What payment methods are accepted for AT45DB161E-MHF-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161E-MHF-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161E-MHF-T?
AT45DB161E-MHF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161E-MHF-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-MHF-T?
For technical support, including AT45DB161E-MHF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161E-MHF-T requirements.
6.How does Aetrix verify that AT45DB161E-MHF-T is sourced from the original manufacturer or authorized distributors?
All AT45DB161E-MHF-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-MHF-T meets industry standards.
7.What is the process for return or replacement of AT45DB161E-MHF-T?
All AT45DB161E-MHF-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161E-MHF-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-MHF-T part is unused and in its original packaging.
Return procedure for AT45DB161E-MHF-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT45DB161E-MHF-T Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
