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Microchip Technology AT25080AN-10SI-1.8-T
- Part No.:
- AT25080AN-10SI-1.8-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25080AN-10SI-1.8-T.pdf
- Description:
- IC EEPROM 8KBIT SPI 20MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,202
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Product details
Overview
AT25080AN-10SI-1.8-T from Microchip Technology (formerly Atmel) is a serial SPI EEPROM providing 8 Kbit (1024 × 8) nonvolatile memory with 1.8 V to 5.5 V supply operation, 20 MHz max clock rate at 5 V, 32-byte page write capability, and hardware/software write protection via WP pin and status register. It serves as system configuration storage in automotive control modules requiring extended temperature reliability.
For engineers reviewing the AT25080AN-10SI-1.8-T datasheet, AT25080AN-10SI-1.8-T pinout, AT25080AN-10SI-1.8-T application, or AT25080AN-10SI-1.8-T equivalent, key selection factors include 1.8 V low-voltage compatibility, industrial temperature range (−40°C to +85°C), JEDEC SOIC-8 packaging, block write protection granularity, and self-timed 5 ms max write cycle.
Technical Context
The AT25080AN-10SI-1.8-T implements a synchronous SPI slave interface supporting Modes 0 and 3, with separate SI/SO pins for full-duplex communication and MSB-first data framing. Its internal architecture includes an 8-bit instruction register handling op-codes for READ, WRITE, WREN, WRDI, RDSR, and WRSR.
Block write protection is managed through nonvolatile BP0/BP1 bits in the status register, enabling selective locking of 0%, 25%, 50%, or 100% of the memory array. Hardware protection is enforced when WPEN = 1 and WP pin is low, while HOLD pin allows pausing ongoing serial transfers without resetting the sequence.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 words × 8 bits); sufficient for firmware boot parameters or calibration data in compact embedded systems |
| Supply Voltage Range | 1.8 V to 5.5 V; enables direct interfacing with 1.8 V, 2.7 V, 3.3 V, and 5 V microcontrollers without level shifting |
| Max Clock Frequency | 20 MHz at VCC = 5 V; supports high-speed configuration reads in time-critical boot sequences |
| Page Write Size | 32 bytes; minimizes write latency versus byte-write while avoiding excessive overwrites during partial updates |
| Write Cycle Time | 5 ms maximum; deterministic timing simplifies host software wait-loop or polling implementation |
| Endurance & Retention | 1 million write cycles / 100 years data retention; meets long-life requirements for automotive and industrial logging |
| Operating Temperature | −40°C to +85°C; qualified for under-hood and industrial control cabinet environments |
Pinout & Package
AT25080AN-10SI-1.8-T is housed in an 8-lead JEDEC SOIC package (8S1), 0.150" wide body, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; initiates SPI transaction and places SO in high-impedance when deasserted |
| SCK | Serial Clock | Master-generated clock; synchronizes all SI/SO data transfers; supports Modes 0 and 3 |
| SI | Serial Data Input | Receives op-code, address, and data; MSB-first framing required per SPI protocol |
| SO | Serial Data Output | Drives read data; tri-states when CS high or during HOLD assertion |
| WP | Write Protect | Hardware lock for status register and protected memory blocks when WPEN = 1 and WP = low |
| HOLD | Communication Suspend | Pauses active SPI transfer without resetting address counter; requires SCK low to assert/deassert |
| VCC | Power Supply | 1.8–5.5 V input; powers internal logic and memory array; decoupling capacitor required |
| GND | Ground | Reference return path for all I/O and internal circuitry; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| 1.8 V Low-Voltage Operation | Enables direct integration into battery-powered or ultra-low-power MCU subsystems without voltage translation |
| 32-Byte Page Write | Reduces average write time by >90% vs. byte-write for multi-byte updates, improving system responsiveness |
| Four-Level Block Protection | Allows independent locking of top quarter, half, or full array-critical for safeguarding bootloader or security keys |
| Self-Timed Write Cycle | Eliminates need for external timing control or busy-wait loops beyond RDSR polling for RDY bit |
| HOLD Pin Functionality | Permits master MCU to service higher-priority interrupts mid-transfer without losing SPI context or reinitializing |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing adaptive fuel trim tables and sensor calibration offsets that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed during cold-start initialization and runtime parameter updates. Use Value: 100-year data retention and −40°C to +85°C operation ensure calibration integrity over vehicle lifetime without refresh. | Use Scenario: Holding user-defined I/O mapping, PID tuning constants, and alarm thresholds in modular automation controllers. IC Role / Device Role / Timing Role: SPI-configurable persistent storage interfaced to ARM Cortex-M based PLC main processor. Use Value: 32-byte page writes reduce configuration save latency during field commissioning or firmware updates. |
| Medical Diagnostic Device Settings | Smart Energy Meter Firmware Parameters |
Use Scenario: Securing device-specific calibration coefficients, user preferences, and regulatory compliance flags in portable ultrasound units. IC Role / Device Role / Timing Role: Protected EEPROM accessed via isolated SPI bus to prevent accidental corruption during hot-swap battery changes. Use Value: Hardware WP pin + BP bits prevent unauthorized modification of FDA-mandated calibration data. | Use Scenario: Storing tariff schedules, metering constants, and cryptographic keys in ANSI C12.19-compliant smart meters. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory with write-disable instructions for secure parameter updates over HAN. Use Value: 1 million endurance cycles support daily firmware patching and key rotation over 10+ year field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95080-DRMN3TP/K | STMicroelectronics 8 Kbit SPI EEPROM; identical 1.8–5.5 V range and SOIC-8 package; 20 MHz max clock at 5 V; 5 ms write cycle | No HOLD pin; uses different status register bit layout and lacks BP-level granularity (only full-array or none) | Select when HOLD functionality is unused and simpler status register management is preferred |
| BR24G08FJ-WE2 | Rohm 8 Kbit SPI EEPROM; 1.7–5.5 V range; SOIC-8; 10 MHz max clock at 1.7 V; 5 ms write cycle; built-in error correction | Lower max speed at low voltage; includes ECC for enhanced data integrity in noisy environments | Select for mission-critical applications where single-bit error resilience outweighs 10 MHz vs. 20 MHz speed trade-off |
Compared with M95080-DRMN3TP/K and BR24G08FJ-WE2, the AT25080AN-10SI-1.8-T uniquely combines HOLD pin support, four-tier block protection, and 20 MHz operation at 5 V in a drop-in SOIC-8 footprint-making it optimal for real-time embedded systems requiring both configurability and robustness.
Availability
AT25080AN-10SI-1.8-T is available at Aetrix Electronics and suitable for automotive control units, industrial programmable logic controllers, medical diagnostic instruments, and smart energy metering systems requiring stable component supply across extended temperature and low-voltage operating conditions.
Supply support for AT25080AN-10SI-1.8-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
Microchip Technology is a global provider of microcontroller, analog, FPGA, and memory solutions, delivering reliable, scalable semiconductor products for industrial, automotive, and consumer markets.
The AT25080AN-10SI-1.8-T belongs to Microchip's legacy Atmel SPI EEPROM product line, engineered specifically for robust, low-power nonvolatile data storage in resource-constrained embedded systems with stringent reliability and qualification requirements.
FAQ
What is the operating voltage range for the AT25080AN-10SI-1.8-T?
The AT25080AN-10SI-1.8-T operates from 1.8 V to 5.5 V, supporting direct interface with 1.8 V, 2.7 V, 3.3 V, and 5 V logic families. This dual-range capability eliminates level-shifting components in mixed-voltage designs and ensures compatibility with modern ultra-low-power MCUs. The "1.8" suffix explicitly denotes its qualification for 1.8 V minimum operation.
Does the AT25080AN-10SI-1.8-T support SPI Mode 0 and Mode 3 only?
Yes, the AT25080AN-10SI-1.8-T explicitly supports SPI Modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1), as confirmed in its official datasheet. It does not support Modes 1 or 2. This constraint requires matching the host controller's SPI mode configuration precisely-failure to do so results in misaligned sampling and corrupted data transfers.
How does the HOLD pin function on the AT25080AN-10SI-1.8-T during an active SPI transaction?
The HOLD pin on the AT25080AN-10SI-1.8-T suspends serial communication when asserted low while SCK is low, preserving the current address and instruction state without resetting the sequence. To resume, HOLD must be returned high while SCK remains low. During HOLD, SI is ignored and SO enters high-impedance-enabling the host MCU to handle interrupts or other tasks before continuing the exact same transaction.
What memory protection options are available on the AT25080AN-10SI-1.8-T?
The AT25080AN-10SI-1.8-T provides dual-layer protection: hardware-based via the WP pin (when WPEN = 1) and software-configurable via BP0/BP1 bits in the status register. These bits enable four protection levels-none, top 25%, top 50%, or full array-allowing independent safeguarding of bootloader code, calibration data, or security keys without affecting unprotected regions.
Is the AT25080AN-10SI-1.8-T qualified for automotive applications?
Yes, the AT25080AN-10SI-1.8-T is specified for industrial temperature (−40°C to +85°C) and offered in automotive-grade variants. While this specific part number carries industrial qualification, its underlying design-including 100-year data retention, 1 million endurance cycles, and AEC-Q100-aligned process flow-makes it widely deployed in automotive ECUs, infotainment systems, and ADAS modules where extended reliability is mandatory.
AT25080AN-10SI-1.8-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 20 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25080AN-10SI-1.8-T FAQ
1.How can I place an order for AT25080AN-10SI-1.8-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25080AN-10SI-1.8-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 AT25080AN-10SI-1.8-T reliable?
The price and inventory of AT25080AN-10SI-1.8-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25080AN-10SI-1.8-T is usually 5 days.
3.What payment methods are accepted for AT25080AN-10SI-1.8-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080AN-10SI-1.8-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25080AN-10SI-1.8-T?
AT25080AN-10SI-1.8-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25080AN-10SI-1.8-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 AT25080AN-10SI-1.8-T?
For technical support, including AT25080AN-10SI-1.8-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080AN-10SI-1.8-T requirements.
6.How does Aetrix verify that AT25080AN-10SI-1.8-T is sourced from the original manufacturer or authorized distributors?
All AT25080AN-10SI-1.8-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 AT25080AN-10SI-1.8-T meets industry standards.
7.What is the process for return or replacement of AT25080AN-10SI-1.8-T?
All AT25080AN-10SI-1.8-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25080AN-10SI-1.8-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 AT25080AN-10SI-1.8-T part is unused and in its original packaging.
Return procedure for AT25080AN-10SI-1.8-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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