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Microchip Technology AT25080-10PI-2.7
- Part No.:
- AT25080-10PI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT25080-10PI-2.7.pdf
- Description:
- IC EEPROM 8KBIT SPI 3MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,621
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Product details
Overview
AT25080-10PI-2.7 from Microchip Technology (formerly Atmel) is a 8-Kbit SPI serial EEPROM organized as 1024 words × 8 bits, operating from 2.7V to 5.5V, supporting 3.0 MHz clock rate at 5V, with 32-byte page write capability and hardware/software write protection via WP pin and status register. It serves in industrial control systems for parameter storage, calibration data retention, and configuration backup.
For engineers reviewing the AT25080-10PI-2.7 datasheet, AT25080-10PI-2.7 pinout, AT25080-10PI-2.7 application, or AT25080-10PI-2.7 equivalent, this device delivers verified low-voltage SPI EEPROM functionality with 1 million write cycles, 100-year data retention, block-level write protection, and compatibility with 68HC11/6805 microcontroller peripherals.
Technical Context
The AT25080-10PI-2.7 implements a synchronous SPI slave interface compliant with Modes 0 and 3, using separate SI/SO lines and CS-controlled selection. Its internal architecture includes an 8-bit instruction register, nonvolatile status register (WPEN, BP1/BP0, WEN, RDY), and automatic address incrementing during page writes.
All operations - including READ, WRITE, WREN, WRDI, RDSR, and WRSR - are initiated by CS falling edge and MSB-first transmission. Write cycles are self-timed (5 ms typical), require prior WREN activation, and support 1/4, 1/2, or full-array block protection via programmable status bits without external erase steps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8), sufficient for firmware flags, sensor offsets, and small configuration tables |
| Supply Voltage Range | 2.7V to 5.5V - supports direct integration into 3.3V and 5V logic domains without level shifting |
| Max Clock Frequency | 3.0 MHz at VCC = 5.0V - enables fast parameter updates in real-time embedded systems |
| Page Write Size | 32 bytes - balances write speed and endurance by limiting per-cycle stress on memory cells |
| Write Endurance | 1 million cycles - ensures reliable field operation over 10+ years in high-write-intensity applications |
| Data Retention | 100 years at +25°C - guarantees long-term integrity of stored calibration or security keys |
| Operating Temperature | -40°C to +85°C - qualified for industrial environments including motor drives and PLCs |
| Interface Protocol | SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) - interoperable with diverse MCU families |
Pinout & Package
AT25080-10PI-2.7 is supplied in an 8-lead PDIP (8P3) package, 0.300" wide body, suitable for through-hole prototyping and legacy industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must be low to accept instructions and data on SI/SCK |
| SCK | Serial Clock | Input-only master-generated clock; timing defines all data sampling edges per SPI mode |
| SI | Serial Data Input | Accepts op-codes, addresses, and write data; MSB-first, sampled on SCK rising/falling per mode |
| SO | Serial Data Output | Drives read data and status bits; high-impedance when CS high or HOLD active |
| GND | Ground Reference | Return path for VCC and all I/O signals; requires low-impedance connection to system ground plane |
| VCC | Power Supply | 2.7–5.5V supply; decoupling capacitor (0.1 µF) required within 10 mm of pin |
| WP | Write Protect | Hardware lock for status register and protected memory blocks when WPEN=1 and WP=low |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without resetting sequence; requires SCK low before assertion |
Key Features
| Feature | Design Value |
|---|---|
| Block Write Protection | Configurable 1/4, 1/2, or full array protection via nonvolatile BP0/BP1 bits - prevents accidental overwrite of critical firmware or calibration zones |
| Dual Write Protection | Combines hardware (WP pin) and software (WRSR/WREN) controls - enables layered security for factory programming and field updates |
| Page Write Efficiency | 32-byte burst writes reduce total programming time vs. byte-wise writes - cuts update latency in parameter-heavy applications |
| Industrial Temp Range | -40°C to +85°C operation - validated for use in motor controllers, HVAC systems, and industrial sensors without derating |
| Low Standby Current | 0.2 µA typical at 2.7V - minimizes battery drain in always-on monitoring devices and portable instrumentation |
Applications
| Industrial PLC Configuration Storage | Automotive ECU Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and runtime via SPI from ARM Cortex-M3/M4 host. Use Value: Enables field-upgradable settings without firmware reflash; 100-year retention preserves factory calibrations across equipment lifecycle. |
Use Scenario: Holding engine temperature compensation curves and fuel trim values in automotive engine control units. IC Role / Device Role / Timing Role: SPI-connected EEPROM providing deterministic read/write access during cold-start initialization and closed-loop control loops. Use Value: Survives 1M+ ignition cycles; block protection prevents corruption during CAN-triggered reprogramming events. |
| Medical Device Serial Number Log | Smart Meter Firmware Flags |
Use Scenario: Recording device usage counters, calibration timestamps, and regulatory compliance logs in portable diagnostic tools. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory node interfaced to MSP430 or PIC microcontroller via isolated SPI bus. Use Value: WP pin hardwired to prevent unauthorized log erasure; 1M endurance supports daily logging for >27 years. |
Use Scenario: Storing tariff schedules, metering constants, and firmware version flags in ANSI C12.22-compliant smart electricity meters. IC Role / Device Role / Timing Role: Low-power SPI EEPROM accessed only during power-up or firmware update windows to minimize system current draw. Use Value: 0.2 µA standby current extends battery backup life; 2.7–5.5V range matches meter's regulated 3.3V rail. |
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 | 8-Kbit SPI EEPROM, 2.5–5.5V supply, 20 MHz max clock, 8-lead SOIC package | Higher speed and wider voltage range; lacks HOLD pin and TSSOP option | Select for designs requiring faster writes or broader supply tolerance, but verify HOLD functionality is not needed |
| BR24G08NUX-5TR | 8-Kbit I²C EEPROM, 1.7–5.5V, 400 kHz standard mode, 8-lead USON package | I²C interface instead of SPI; smaller footprint; no WP/HOLD pins | Choose when board space is constrained and I²C is already used elsewhere in system; avoid if SPI master resources are dedicated |
Compared with AT25080-10PI-2.7, M95080-DRMN3TP/K offers higher throughput but removes HOLD functionality critical for interrupt-safe communication, while BR24G08NUX-5TR trades SPI simplicity for I²C pin count reduction and eliminates hardware write protection - making AT25080-10PI-2.7 optimal for robust, interrupt-aware industrial SPI designs.
Availability
AT25080-10PI-2.7 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, medical diagnostics, and smart metering applications requiring stable component supply, long-life data retention, and proven low-voltage SPI EEPROM performance.
Supply support for AT25080-10PI-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 acquired Atmel in 2016 and maintains full product support, documentation, and manufacturing continuity for the AT25xxx EEPROM family.
The AT25xxx series was designed specifically for reliable, low-power serial data storage in resource-constrained embedded systems - emphasizing write endurance, flexible voltage operation, and robust SPI interoperability with legacy and modern microcontrollers.
FAQ
What is the maximum clock frequency supported by AT25080-10PI-2.7?
The AT25080-10PI-2.7 supports up to 3.0 MHz at VCC = 5.0V, 2.1 MHz at VCC = 2.7–5.5V, and 0.5 MHz at VCC = 1.8–3.6V. These values are specified in the AC Characteristics table under fSCK parameter and reflect guaranteed timing margins across temperature and voltage ranges. The AT25080-10PI-2.7 does not support frequencies above 3.0 MHz even at 5V.
Does AT25080-10PI-2.7 support both SPI Mode 0 and Mode 3?
Yes, AT25080-10PI-2.7 explicitly supports SPI Modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1), as stated in the Features section. This dual-mode compatibility allows seamless integration with microcontrollers such as the 68HC11 (Mode 0) and certain ARM-based SoCs (Mode 3), without requiring hardware modifications to the AT25080-10PI-2.7 interface.
How does the HOLD pin function during an active SPI transaction?
The HOLD pin suspends serial communication without resetting the internal state: it must be asserted low while SCK is low, and de-asserted high while SCK remains low to resume. During HOLD, SI is ignored and SO enters high-impedance - preserving the current address and instruction context. This behavior is confirmed in the Functional Description section and timing diagrams for AT25080-10PI-2.7.
What protection levels are available via the Block Write Protection feature of AT25080-10PI-2.7?
AT25080-10PI-2.7 provides four block protection levels via BP1/BP0 bits: none (00), top 1/4 (01), top 1/2 (10), or entire array (11). For the AT25080 variant, these correspond to address ranges 0300–03FFh, 0200–03FFh, and 0000–03FFh respectively. Protection applies only when WPEN=1 and WP=low, or when set via WRSR instruction - all defined in Table 4 of the datasheet.
Is AT25080-10PI-2.7 compatible with 1.8V systems?
No - AT25080-10PI-2.7 is rated for 2.7V to 5.5V operation only. The "-2.7" suffix denotes the 2.7V minimum supply option; 1.8V-compatible variants carry the "-1.8" suffix (e.g., AT25080-10PI-1.8). Attempting to operate AT25080-10PI-2.7 below 2.7V may result in unreliable reads, failed writes, or undefined status register behavior per DC Characteristics specifications.
AT25080-10PI-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:
- 3 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
AT25080-10PI-2.7 FAQ
1.How can I place an order for AT25080-10PI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25080-10PI-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 AT25080-10PI-2.7 reliable?
The price and inventory of AT25080-10PI-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 AT25080-10PI-2.7 is usually 5 days.
3.What payment methods are accepted for AT25080-10PI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080-10PI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25080-10PI-2.7?
AT25080-10PI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25080-10PI-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 AT25080-10PI-2.7?
For technical support, including AT25080-10PI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080-10PI-2.7 requirements.
6.How does Aetrix verify that AT25080-10PI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT25080-10PI-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 AT25080-10PI-2.7 meets industry standards.
7.What is the process for return or replacement of AT25080-10PI-2.7?
All AT25080-10PI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT25080-10PI-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 AT25080-10PI-2.7 part is unused and in its original packaging.
Return procedure for AT25080-10PI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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