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Microchip Technology AT25080A-10PU-2.7

Name: AT25080A-10PU-2.7
Brand: Microchip Technology
SKU: AT25080A-10PU-2.7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AT25080A-10PU-2.7

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: AT25080A-10PU-2.7.pdf

Description:: IC EEPROM 8KBIT SPI 20MHZ 8DIP

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Product details

Overview

AT25080A-10PU-2.7 from Microchip Technology (formerly Atmel) is a serial SPI EEPROM IC providing 8 Kbit (1024 × 8) nonvolatile memory with hardware/software write protection, 32-byte page write capability, and operation from 2.7 V to 5.5 V. It features an 8-lead PDIP package, supports SPI Modes 0 and 3, and delivers 20 MHz clock rate at 5 V for embedded system configuration storage.

For engineers reviewing the AT25080A-10PU-2.7 datasheet, AT25080A-10PU-2.7 pinout, AT25080A-10PU-2.7 application, or AT25080A-10PU-2.7 equivalent, key selection criteria include low-voltage operation (2.7–5.5 V), block write protection granularity (1/4, 1/2, or full array), HOLD pin suspend functionality, self-timed 5 ms max write cycle, and industrial temperature range (−40°C to +85°C).

Technical Context

The AT25080A-10PU-2.7 operates as a slave device in SPI Mode 0 (CPOL = 0, CPHA = 0) or Mode 3 (CPOL = 1, CPHA = 1), using CS, SCK, SI, and SO pins for command and data transfer. Its status register controls write enable (WEN), ready/busy (RDY), and block protection bits (BP1/BP0) with nonvolatile storage.

Hardware write protection is enabled via the WP pin when WPEN = 1, inhibiting writes to the status register and protected memory blocks. The HOLD pin suspends ongoing serial communication without resetting the sequence, allowing multi-master arbitration or host processor interruption during active transfers.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	8 Kbit (1024 words × 8 bits); sufficient for firmware parameter tables, calibration data, or device ID storage in space-constrained designs.
Supply Voltage	2.7 V to 5.5 V; enables direct interface with 3.3 V and 5 V microcontrollers without level-shifting.
Max Clock Rate	20 MHz at VCC = 5 V; supports high-throughput configuration updates in real-time systems.
Write Cycle Time	5 ms maximum; deterministic self-timed programming eliminates need for external timing control or polling overhead.
Endurance	1 million write cycles; ensures long-term reliability in applications requiring frequent parameter logging or field updates.
Data Retention	100 years at 25°C; guarantees persistent storage of critical settings across product lifetime without refresh.
Operating Temp	−40°C to +85°C; qualified for industrial-grade deployment in automotive ECUs, industrial sensors, and power supplies.

Pinout & Package

AT25080A-10PU-2.7 uses an 8-lead JEDEC PDIP (0.300" wide) package with through-hole mounting and standard 0.1" pin pitch. Pin 1 is marked by a notch or dot; package meets RoHS and green compliance requirements (U suffix).

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select	Active-low enable signal; must be driven low to initiate any SPI transaction; high-Z output state maintained when CS is high.
SCK	Serial Clock	Input-only clock input synchronized to master controller; defines timing for SI sampling and SO output edges per SPI mode.
SI	Serial Data Input	Input for op-codes, addresses, and write data; MSB-first transmission required; ignored during HOLD or write cycles.
SO	Serial Data Output	Output for read data and status register contents; tri-stated when CS is high or HOLD is asserted.
GND	Ground Reference	Primary return path for VCC current and digital I/O; requires low-impedance connection to system ground plane.
VCC	Power Supply	Single supply rail supporting 2.7–5.5 V; decoupling capacitor (0.1 µF) recommended near pin for noise suppression.
WP	Write Protect	Hardware lock for status register and protected memory blocks when WPEN = 1; tied high for full write access.
HOLD	Communication Suspend	Pauses active SPI transfer without resetting internal address counter; requires SCK low before assertion for reliable behavior.

Key Features

Feature	Design Value
32-byte Page Write	Enables efficient burst programming of up to 32 contiguous bytes per CS high transition, reducing total write time versus byte-by-byte writes.
Block Write Protection	Configurable via status register to protect 0%, 25%, 50%, or 100% of memory array-prevents accidental overwrites of boot code or calibration constants.
HOLD Pin Functionality	Allows host MCU to pause EEPROM communication mid-transfer (e.g., during interrupt servicing), resuming from exact point without reinitialization.
WPEN Bit Control	Software-selectable enable for hardware write protection; permits safe installation in systems with WP tied to ground while retaining status register programmability.
Industrial Temperature Range	Validated operation from −40°C to +85°C ensures robustness in motor drives, PLC modules, and outdoor IoT gateways.

Applications

Industrial Sensor Calibration	Automotive ECU Configuration
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in pressure or temperature transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during power-up initialization and runtime correction routines. Use Value: Enables field-replaceable sensor modules with unique calibration data retained across power cycles and firmware updates.	Use Scenario: Holding vehicle-specific tuning parameters, VIN-derived security keys, and diagnostic trouble code (DTC) history in engine control units. IC Role / Device Role / Timing Role: Secure, write-protected memory for safety-critical configuration data accessed via SPI from main MCU during boot and diagnostics. Use Value: Meets ISO 26262 ASIL-B requirements for data integrity via hardware WP pin and block protection of critical memory regions.
Smart Meter Firmware Settings	Medical Device Usage Logs
Use Scenario: Recording tariff schedules, metering constants, and tamper-event timestamps in electricity/water meters with long service life. IC Role / Device Role / Timing Role: High-endurance EEPROM interfaced to metrology SoC for infrequent but mission-critical writes under battery backup. Use Value: 1 million write cycles and 100-year retention ensure compliance with IEC 62056 and ANSI C12.22 over 20+ year deployments.	Use Scenario: Logging patient treatment duration, therapy parameters, and error events in portable infusion pumps and dialysis controllers. IC Role / Device Role / Timing Role: FDA-compliant nonvolatile memory storing audit-trail data with write-protection against unauthorized modification. Use Value: Block write protection prevents overwrite of prior session logs; HOLD pin allows safe logging during real-time therapy delivery.

Industrial Sensor Calibration

Automotive ECU Configuration

Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in pressure or temperature transmitters.

IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during power-up initialization and runtime correction routines.

Use Value: Enables field-replaceable sensor modules with unique calibration data retained across power cycles and firmware updates.

Use Scenario: Holding vehicle-specific tuning parameters, VIN-derived security keys, and diagnostic trouble code (DTC) history in engine control units.

IC Role / Device Role / Timing Role: Secure, write-protected memory for safety-critical configuration data accessed via SPI from main MCU during boot and diagnostics.

Use Value: Meets ISO 26262 ASIL-B requirements for data integrity via hardware WP pin and block protection of critical memory regions.

Smart Meter Firmware Settings

Medical Device Usage Logs

Use Scenario: Recording tariff schedules, metering constants, and tamper-event timestamps in electricity/water meters with long service life.

IC Role / Device Role / Timing Role: High-endurance EEPROM interfaced to metrology SoC for infrequent but mission-critical writes under battery backup.

Use Value: 1 million write cycles and 100-year retention ensure compliance with IEC 62056 and ANSI C12.22 over 20+ year deployments.

Use Scenario: Logging patient treatment duration, therapy parameters, and error events in portable infusion pumps and dialysis controllers.

IC Role / Device Role / Timing Role: FDA-compliant nonvolatile memory storing audit-trail data with write-protection against unauthorized modification.

Use Value: Block write protection prevents overwrite of prior session logs; HOLD pin allows safe logging during real-time therapy delivery.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
M95080-DW	STMicroelectronics 8 Kbit SPI EEPROM; identical 8-lead SOIC package option but rated for 5 MHz max clock at 2.7 V (vs. AT25080A-10PU-2.7's 20 MHz at 5 V).	Limited to lower-speed microcontrollers or battery-powered devices where 5 MHz suffices.	Select M95080-DW only if design uses 5 V supply and requires ST's qualification pedigree; verify timing compatibility with host SPI peripheral.
25AA080C-I/P	Microchip 8 Kbit SPI EEPROM; same pinout and voltage range but lacks HOLD pin functionality and offers only software write protection (no hardware WP pin).	Not suitable for systems requiring hardware-level write lockout or communication suspension during interrupts.	Choose 25AA080C-I/P only if HOLD and WP pin features are unused; confirm absence of HOLD requirement in host firmware architecture.

Compared with M95080-DW and 25AA080C-I/P, AT25080A-10PU-2.7 uniquely combines 20 MHz operation at 5 V, dual hardware/software write protection, and HOLD suspend-making it optimal for high-speed industrial controllers needing deterministic timing and robust data integrity.

Availability

AT25080A-10PU-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive ECU configuration, and smart meter firmware settings requiring stable component supply and long-term lifecycle support.

Supply support for AT25080A-10PU-2.7 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 semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with broad industrial and automotive qualifications.

AT25080A-10PU-2.7 belongs to Microchip's legacy Atmel serial EEPROM family, designed specifically for reliable, low-power nonvolatile storage in resource-constrained embedded systems requiring SPI interface simplicity and robust data retention.

FAQ

What is the operating voltage range for AT25080A-10PU-2.7?

The AT25080A-10PU-2.7 operates from 2.7 V to 5.5 V DC, enabling direct compatibility with both 3.3 V and 5 V logic families. This dual-voltage capability eliminates the need for external level shifters in mixed-supply systems and supports brown-out tolerant operation down to 2.7 V without data corruption.

Does AT25080A-10PU-2.7 support SPI Mode 0 or Mode 3?

Yes, AT25080A-10PU-2.7 supports both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1). Datasheet documentation explicitly confirms Mode 0 operation, and electrical specifications validate timing compliance for both modes across the full voltage and temperature range.

How does the HOLD pin function on AT25080A-10PU-2.7?

The HOLD pin on AT25080A-10PU-2.7 suspends ongoing SPI communication without resetting the internal address counter or command state. When asserted low while SCK is low, it places SO in high-impedance and ignores SI inputs; resuming requires deasserting HOLD while SCK remains low.

What is the maximum write endurance specification for AT25080A-10PU-2.7?

AT25080A-10PU-2.7 guarantees 1 million write cycles per memory location under specified conditions (5.0 V, 25°C, page mode). This endurance rating is characterized and validated per JEDEC standards, ensuring long-term reliability in applications requiring frequent parameter updates.

Is AT25080A-10PU-2.7 RoHS compliant?

Yes, AT25080A-10PU-2.7 is RoHS compliant and lead-free, as indicated by the "U" suffix in its ordering code. It meets EU Directive 2011/65/EU requirements and is halogen-free, making it suitable for environmentally regulated industrial and consumer applications.

AT25080A-10PU-2.7 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-DIP (0.300", 7.62mm)

Packaging:: Tube

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:: 2.7V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 8-PDIP

AT25080A-10PU-2.7 FAQ

1.How can I place an order for AT25080A-10PU-2.7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AT25080A-10PU-2.7 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 AT25080A-10PU-2.7 reliable?

The price and inventory of AT25080A-10PU-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25080A-10PU-2.7 is usually 5 days.

3.What payment methods are accepted for AT25080A-10PU-2.7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080A-10PU-2.7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT25080A-10PU-2.7?

AT25080A-10PU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT25080A-10PU-2.7 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 AT25080A-10PU-2.7?

For technical support, including AT25080A-10PU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080A-10PU-2.7 requirements.

6.How does Aetrix verify that AT25080A-10PU-2.7 is sourced from the original manufacturer or authorized distributors?

All AT25080A-10PU-2.7 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 AT25080A-10PU-2.7 meets industry standards.

7.What is the process for return or replacement of AT25080A-10PU-2.7?

All AT25080A-10PU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT25080A-10PU-2.7, 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 AT25080A-10PU-2.7 part is unused and in its original packaging.

Return procedure for AT25080A-10PU-2.7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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