My Inquiry
My Account
Renesas AT25DF081A-SSH-T
.jpg)
- Part No.:
- AT25DF081A-SSH-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25DF081A-SSH-T.pdf
- Description:
- IC FLASH 8MBIT SPI 100MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,701
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT25DF081A-SSH-T from Adesto Technologies is an 8-Mbit SPI serial Flash memory IC designed for code shadowing and data storage in embedded systems. It operates from a single 2.7V–3.6V supply, supports SPI Modes 0/3 and RapidS™ up to 100MHz, delivers ≤5ns clock-to-output delay, and features uniform 4-Kbyte/32-Kbyte/64-Kbyte block erase for mixed code+data applications.
For engineers reviewing the AT25DF081A-SSH-T datasheet, AT25DF081A-SSH-T pinout, AT25DF081A-SSH-T application, or AT25DF081A-SSH-T equivalent, key selection considerations include dual-input/dual-output read/write capability, sector lockdown for permanent read-only protection, 128-byte OTP security register, industrial temperature support (−40°C to +85°C), and RoHS-compliant 8-lead SOIC (208-mil) packaging.
Technical Context
The AT25DF081A-SSH-T implements a flexible erase architecture with four physical granularity levels-4-Kbyte, 32-Kbyte, 64-Kbyte blocks, and full chip-enabling efficient code module updates and isolated data logging without over-erasing. Its memory array is partitioned into sixteen 64-Kbyte sectors, each individually protectable via software or hardware (WP pin) control.
It integrates dual-mode I/O functionality: SI/SO pins dynamically reconfigure as SIO/SOI during Dual-Output Read and Dual-Input Program operations, doubling effective throughput versus standard SPI. The device uses internal address counters, automatic program/erase failure detection (EPE flag), and a two-byte status register with Write Enable Latch (WEL) and Block Protect (BP) bits for robust command sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1,048,576 bytes); sufficient for firmware images and configuration data in resource-constrained microcontrollers. |
| Supply Voltage | 2.7V–3.6V; compatible with 3.3V logic systems without level-shifting or auxiliary supplies. |
| Max Clock Frequency | 100 MHz (RapidS™ mode); enables high-speed boot code loading and real-time data logging. |
| Read Latency | ≤5 ns tV (clock-to-output); minimizes wait states during instruction fetch from external memory. |
| Erase Granularity | Uniform 4-Kbyte / 32-Kbyte / 64-Kbyte blocks + full chip; allows precise firmware patching and secure data partitioning. |
| Endurance & Retention | 100,000 program/erase cycles; 20-year data retention; suitable for field-upgradable industrial firmware. |
| Power Consumption | 5 µA deep power-down current; enables ultra-low-power sleep modes in battery-operated devices. |
| Operating Temperature | −40°C to +85°C; validated for industrial-grade reliability in automotive infotainment and factory automation. |
Pinout & Package
AT25DF081A-SSH-T is packaged in an industry-standard 8-lead SOIC (208-mil width), pin-compatible with JEDEC MS-012AC. All signals conform to SPI bus conventions with dual-mode I/O capability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; initiates all commands and places SO in high-Z when deasserted. |
| SCK | Serial Clock | Master-generated clock; data latched on rising edge (SI/SIO), output on falling edge (SO/SOI). |
| SI (SIO) | Serial Input / Dual-Output | Standard input for commands/addresses/data; becomes output (SIO) during Dual-Output Read for 2-bit-per-cycle reads. |
| SO (SOI) | Serial Output / Dual-Input | Standard output for read data; becomes input (SOI) during Dual-Input Program for 2-bit-per-cycle writes. |
| WP | Write Protect | Hardware lock for sector protection; low-active; internally pulled high; enables tamper-resistant firmware lockdown. |
| HOLD | Communication Pause | Halts ongoing SPI transfer without deselecting device; requires CS asserted and SCK low to activate. |
| VCC | Power Supply | 2.7V–3.6V main supply; powers core logic, memory array, and I/O buffers. |
| GND | Ground Reference | System ground return path; critical for noise immunity and stable erase/program voltage thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Input/Dual-Output SPI | Enables 2× faster read/write bandwidth vs. standard SPI-critical for time-sensitive boot and OTA update sequences. |
| Sector Lockdown | Permanently disables write/erase to any combination of 64-Kbyte sectors; prevents malicious or accidental corruption of bootloader or crypto keys. |
| 128-Byte OTP Security Register | Stores immutable device identifiers, ESNs, or encrypted keys; supports secure provisioning and anti-cloning in production. |
| Flexible Erase Architecture | Four independent erase granularities eliminate wasted space in mixed code+data layouts-reducing need for external EEPROM. |
| Global Protect/Unprotect | Single-command mass sector protection/unprotection; streamlines manufacturing programming and field recovery workflows. |
| Deep Power-Down Mode | 5 µA typical current draw; extends battery life in always-on sensor nodes and portable medical devices. |
Applications
| Firmware Boot Storage | Secure Configuration Storage |
|---|---|
|
Use Scenario: Microcontroller boots from external Flash by copying application code into RAM before execution. IC Role / Device Role / Timing Role: Non-volatile code repository with fast random-access read and deterministic latency for instruction fetch. Use Value: 100MHz RapidS™ read speed and ≤5ns tV reduce boot time; 4-Kbyte erase granularity enables safe patching of individual bootloader modules. |
Use Scenario: Storing calibrated sensor offsets, network credentials, and regulatory compliance settings across product lifetime. IC Role / Device Role / Timing Role: Tamper-resistant parameter vault with hardware write-lock (WP) and permanent lockdown capability. Use Value: Sector lockdown and 128-byte OTP register prevent unauthorized modification of calibration data or Wi-Fi PSKs in deployed field units. |
| Industrial Firmware Updates | Medical Device Data Logging |
|
Use Scenario: Over-the-air (OTA) firmware upgrades in programmable logic controllers (PLCs) and HMIs. IC Role / Device Role / Timing Role: Dual-Input Program interface accelerates flash programming; status register polling enables reliable progress monitoring. Use Value: 1.0ms typical page program time and automatic EPE error reporting ensure robust, verifiable field updates without host-side timeout risks. |
Use Scenario: Long-term storage of patient vital sign trends in portable diagnostic equipment with battery backup. IC Role / Device Role / Timing Role: Low-power nonvolatile memory supporting periodic timestamped writes and infrequent bulk reads. Use Value: 5 µA deep power-down current extends battery life; 20-year data retention guarantees integrity of longitudinal health records. |
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 W25Q80DVSSIG | 8-Mbit SPI Flash; supports Quad I/O but lacks Dual-Input Program and sector lockdown; max 80MHz clock. | No permanent lockdown or OTP register; less suited for security-critical bootloader storage. | Preferred where quad-read speed matters more than write security or permanent protection. |
| Macronix MX25L8006EM1I-12G | 8-Mbit SPI Flash; supports standard SPI only (no RapidS™ or dual-I/O); 75MHz max clock; no OTP register. | Lacks hardware WP-driven sector locking and 128-byte OTP; limited for secure provisioning use cases. | Selected for cost-sensitive industrial controls where basic code storage suffices and security features are unused. |
Compared with W25Q80DVSSIG and MX25L8006EM1I-12G, the AT25DF081A-SSH-T uniquely combines RapidS™-enabled 100MHz operation, dual-input programming, sector lockdown, and OTP security-making it optimal for secure, high-throughput embedded firmware storage where tamper resistance and upgrade reliability are mandatory.
Availability
AT25DF081A-SSH-T is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and automotive infotainment head units requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AT25DF081A-SSH-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
Adesto Technologies (now part of Dialog Semiconductor, part of Renesas Electronics) specialized in low-power, high-performance nonvolatile memory and IoT connectivity solutions.
The AT25DF081A-SSH-T belongs to Adesto's DataFlash® family, engineered specifically for embedded systems demanding fast, secure, and energy-efficient serial Flash with advanced protection mechanisms for firmware and configuration data.
FAQ
What is the maximum operating frequency supported by the AT25DF081A-SSH-T?
The AT25DF081A-SSH-T supports up to 100MHz in RapidS™ mode (opcode 1Bh), 85MHz in standard SPI Dual-Output Read (3Bh), and 50MHz in legacy SPI Read (03h). Its 5ns clock-to-output (tV) timing ensures minimal latency during high-speed instruction fetch or data streaming, making the AT25DF081A-SSH-T well-suited for real-time boot and firmware update scenarios.
Does the AT25DF081A-SSH-T support hardware write protection?
Yes-the AT25DF081A-SSH-T includes a dedicated WP (Write Protect) pin that enables hardware-controlled locking of protected sectors. When WP is driven low, it prevents program and erase operations on sectors previously secured via software protection commands. This feature adds a physical layer of defense against accidental or malicious firmware corruption, enhancing system security beyond software-only methods in the AT25DF081A-SSH-T.
Can the AT25DF081A-SSH-T be used for both code execution and data logging?
Yes-the AT25DF081A-SSH-T's flexible 4-Kbyte/32-Kbyte/64-Kbyte uniform erase architecture allows independent management of code and data regions. Code modules can reside in locked-down 64-Kbyte sectors, while data logs use smaller 4-Kbyte blocks for frequent overwrites. This eliminates the need for separate EEPROM, and the AT25DF081A-SSH-T's 100,000-cycle endurance supports years of field data collection.
What package type is used for the AT25DF081A-SSH-T?
The AT25DF081A-SSH-T is supplied in an 8-lead SOIC package with 208-mil body width (standard JEDEC MS-012AC footprint), RoHS-compliant and halogen-free. This package is pin-compatible with common serial Flash footprints and supports reflow soldering per J-STD-020, ensuring seamless integration into existing industrial PCB layouts without redesign-confirming the AT25DF081A-SSH-T's drop-in readiness for legacy systems.
How does the sector lockdown feature work in the AT25DF081A-SSH-T?
The AT25DF081A-SSH-T's sector lockdown permanently disables all program and erase operations on selected 64-Kbyte sectors using the 33h command. Once locked, sectors cannot be unlocked-even by power cycling or issuing unprotect commands. This provides irreversible protection for bootloader code, cryptographic keys, or regulatory firmware, and is a distinguishing security capability not found in most competing 8-Mbit SPI Flash devices like the AT25DF081A-SSH-T.
AT25DF081A-SSH-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 8Mbit
- Memory Organization:
- 256 Bytes x 4096 pages
- Memory Interface:
- SPI
- Clock Frequency:
- 100 MHz
- Write Cycle Time - Word, Page:
- 7µs, 3ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25DF081A-SSH-T FAQ
1.How can I place an order for AT25DF081A-SSH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF081A-SSH-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 AT25DF081A-SSH-T reliable?
The price and inventory of AT25DF081A-SSH-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25DF081A-SSH-T is usually 5 days.
3.What payment methods are accepted for AT25DF081A-SSH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF081A-SSH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF081A-SSH-T?
AT25DF081A-SSH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF081A-SSH-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 AT25DF081A-SSH-T?
For technical support, including AT25DF081A-SSH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF081A-SSH-T requirements.
6.How does Aetrix verify that AT25DF081A-SSH-T is sourced from the original manufacturer or authorized distributors?
All AT25DF081A-SSH-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 AT25DF081A-SSH-T meets industry standards.
7.What is the process for return or replacement of AT25DF081A-SSH-T?
All AT25DF081A-SSH-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF081A-SSH-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 AT25DF081A-SSH-T part is unused and in its original packaging.
Return procedure for AT25DF081A-SSH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT25DF081A-SSH-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…
