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Microchip Technology AT25080N-10SI
- Part No.:
- AT25080N-10SI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25080N-10SI.pdf
- Description:
- IC EEPROM 8KBIT SPI 3MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,479
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Product details
Overview
AT25080N-10SI from Microchip Technology (formerly Atmel) is an 8-Kbit SPI serial EEPROM organized as 1024 × 8 bits, operating across 2.7V–5.5V supply range with industrial temperature rating (−40°C to +85°C). It delivers 32-byte page writes, hardware/software write protection, and 1 million endurance cycles - deployed in embedded control modules requiring nonvolatile parameter storage under variable voltage conditions.
For engineers reviewing the AT25080N-10SI datasheet, AT25080N-10SI pinout, AT25080N-10SI application, or AT25080N-10SI equivalent, key selection criteria include its 3.0 MHz SPI clock rate at 5V, self-timed 5 ms typical write cycle, block write protection granularity (1/4, 1/2, or full array), and compatibility with SPI Modes 0 and 3 in space-constrained industrial designs.
Technical Context
The AT25080N-10SI functions exclusively as an SPI slave device with dedicated SI (input) and SO (output) pins, supporting MSB-first data transfer and synchronous communication via CS, SCK, SI, and SO. Its internal instruction register accepts op-codes for READ, WRITE, WREN, WRDI, RDSR, and WRSR - all initiated on CS falling edge.
Write operations require explicit WREN instruction prior to WRITE; status register bits BP0/BP1 configure block protection levels, while WPEN enables hardware write protection via the WP pin. The HOLD pin suspends ongoing serial transfers without resetting sequence state, and the device remains in high-impedance SO state when deselected (CS high).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8 bits) - sufficient for firmware configuration tables, calibration data, or device identity storage in microcontroller-based systems. |
| Supply Voltage Range | 2.7V to 5.5V - supports dual-voltage system integration without level-shifting in mixed-signal industrial controllers. |
| SPI Clock Frequency | Up to 3.0 MHz at VCC = 5.0V - enables fast parameter read/write during boot or runtime reconfiguration. |
| Write Cycle Time | 5 ms typical - defines minimum delay between successive page writes; impacts real-time logging latency. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - ensures long-term reliability in field-deployed equipment with infrequent but critical updates. |
| Operating Temperature | −40°C to +85°C - qualified for industrial ambient environments including motor drives, PLC I/O modules, and HVAC controllers. |
| Page Write Size | 32 bytes - optimizes burst programming efficiency while limiting risk of partial-page corruption during power loss. |
Pinout & Package
AT25080N-10SI is packaged in an 8-lead JEDEC SOIC (8S1) - 0.150" wide, gull-wing surface-mount package with standard footprint and thermal profile for reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; initiates serial communication and places SO in high-impedance when high. |
| SCK | Serial Clock Input | Synchronizes data sampling on SI and SO; supports SPI Modes 0 and 3 only. |
| SI | Serial Data Input | Receives op-codes, addresses, and write data; ignored unless CS is low and device is write-enabled. |
| SO | Serial Data Output | Drives read data or status register contents; tri-states when CS is high or during HOLD assertion. |
| GND | Ground Reference | Primary return path for VCC and all I/O signals; must be low-impedance to minimize noise coupling into SPI lines. |
| VCC | Power Supply | 2.7V–5.5V input; powers internal logic and memory array; requires local 0.1 µF decoupling near pin. |
| 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 internal address counter; requires SCK low to assert/deassert. |
Key Features
| Feature | Design Value |
|---|---|
| SPI Mode Compatibility | Supports only Modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1) - eliminates miscommunication risk in fixed-mode host controller designs. |
| Block Write Protection | Configurable via status register to protect 0%, 25%, 50%, or 100% of memory - prevents accidental overwrite of critical bootloader or calibration sectors. |
| Hardware + Software Protection | Combines WP pin (hardware) and WREN/WRDI instructions (software) - enables layered security for field-updatable systems. |
| Self-Timed Write Cycle | No external timing control needed; internal timer manages erase-and-program sequence - simplifies host firmware timing logic. |
| Industrial Temperature Rating | Qualified from −40°C to +85°C - validated for operation in uncontrolled enclosures, outdoor electronics, and factory-floor automation. |
Applications
| Industrial Sensor Node | PLC I/O Module |
|---|---|
|
Use Scenario: Stores sensor calibration coefficients, linearization tables, and device-specific identifiers in battery-backed wireless nodes. IC Role / Device Role: Nonvolatile configuration memory interfaced directly to an ARM Cortex-M0+ MCU via SPI. Use Value: Enables field recalibration without firmware update; 2.7V operation extends battery life during brownout conditions. |
Use Scenario: Retains module address, channel mapping, and scaling factors across power cycles in modular programmable logic controllers. IC Role / Device Role: Parameter storage peripheral for real-time deterministic I/O processing. Use Value: Block protection prevents accidental overwrites during hot-swap firmware updates; 1M endurance supports decades of commissioning cycles. |
| Motor Drive Controller | Smart Energy Meter |
|
Use Scenario: Holds motor tuning parameters (PID gains, current limits) and fault history logs in AC drive inverters. IC Role / Device Role: Persistent memory for operational settings and diagnostics accessible via SPI during runtime. Use Value: 5 ms write time allows safe parameter save before shutdown; industrial temp rating matches heatsink proximity. |
Use Scenario: Stores tariff schedules, metering constants, and tamper-event timestamps in ANSI C12.22-compliant utility meters. IC Role / Device Role: Secure, long-life data logger integrated with metrology SoC via isolated SPI bus. Use Value: Hardware WP pin prevents unauthorized configuration changes; 100-year retention meets regulatory data archival requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95080-WMN6TP | Same 8-Kbit SPI EEPROM, but rated for 5.5V max only (no 1.8V support); 20 MHz max clock; SOIC-8 package identical. | Higher-speed interface suitable for hosts needing faster reads; lacks 1.8V option - not drop-in for ultra-low-power designs. | Select M95080-WMN6TP if host MCU runs SPI above 3 MHz and operates strictly at 2.7–5.5V. |
| BR24G08NUX-10 | I²C interface (not SPI); 1.7–5.5V supply; same 8-Kbit density; TSSOP-8 package; 1M endurance. | Requires I²C-capable host; no HOLD or WP pin - relies solely on software write protection. | Choose BR24G08NUX-10 only when board layout uses I²C routing and SPI pins are unavailable or contested. |
Compared with M95080-WMN6TP and BR24G08NUX-10, the AT25080N-10SI uniquely balances industrial temperature tolerance, SPI Mode 0/3 compatibility, hardware WP support, and 2.7–5.5V flexibility - making it optimal for legacy SPI-based industrial controllers where pinout and protocol stability are mandatory.
Availability
AT25080N-10SI is available at Aetrix Electronics and suitable for industrial sensor nodes, PLC I/O modules, motor drive controllers, and smart energy meters requiring stable component supply across extended temperature ranges and multi-decade product lifecycles.
Supply support for AT25080N-10SI 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 technical and manufacturing continuity for the AT25xxx EEPROM family. The company specializes in microcontrollers, analog, and memory solutions for industrial, automotive, and consumer markets.
The AT25080N-10SI belongs to Microchip's legacy SPI serial EEPROM product line, engineered specifically for robust, low-power, nonvolatile data storage in resource-constrained embedded systems where reliability and long-term availability are critical.
FAQ
What is the maximum SPI clock frequency supported by the AT25080N-10SI?
The AT25080N-10SI 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 and reflect guaranteed timing margins across voltage and temperature. The AT25080N-10SI must operate within these limits to ensure reliable command execution and data integrity.
Does the AT25080N-10SI support SPI Mode 1 or Mode 2?
No, the AT25080N-10SI explicitly supports only SPI Modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1), as confirmed in the Features section of the datasheet. Attempting Mode 1 or Mode 2 will result in incorrect data sampling or communication failure. The AT25080N-10SI's timing diagrams and functional description validate this restriction.
How does the HOLD pin function during an active SPI transaction?
The HOLD pin suspends serial communication while preserving the internal address counter and instruction state - provided it is asserted while SCK is low. The AT25080N-10SI ignores SI inputs and places SO in high-impedance during HOLD, resuming exactly where it left off upon deassertion. This behavior is defined in the HOLD section of the Functional Description and verified in the HOLD Timing diagram.
Can the AT25080N-10SI be used in a 1.8V system?
No - the AT25080N-10SI is rated for 2.7V to 5.5V operation only. For 1.8V systems, the correct variant is AT25080N-10SI-1.8 (ordering code suffix -1.8), which has different DC and AC characteristics and is separately qualified. Using the AT25080N-10SI below 2.7V violates absolute maximum ratings and risks unreliable operation or data corruption.
What happens if a WRITE command is issued without first executing WREN?
If the AT25080N-10SI receives a WRITE instruction while the Write Enable Latch (WEN bit) is cleared (0), it ignores the command entirely and returns to standby mode when CS goes high. No data is written, and the status register remains unchanged. This behavior is mandated by the WREN/WRTI protocol and confirmed in the Functional Description section of the AT25080N-10SI datasheet.
AT25080N-10SI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25080N-10SI FAQ
1.How can I place an order for AT25080N-10SI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25080N-10SI 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 AT25080N-10SI reliable?
The price and inventory of AT25080N-10SI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25080N-10SI is usually 5 days.
3.What payment methods are accepted for AT25080N-10SI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25080N-10SI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25080N-10SI?
AT25080N-10SI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25080N-10SI 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 AT25080N-10SI?
For technical support, including AT25080N-10SI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25080N-10SI requirements.
6.How does Aetrix verify that AT25080N-10SI is sourced from the original manufacturer or authorized distributors?
All AT25080N-10SI 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 AT25080N-10SI meets industry standards.
7.What is the process for return or replacement of AT25080N-10SI?
All AT25080N-10SI units undergo pre-shipment inspection (PSI). If there is an issue with AT25080N-10SI, 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 AT25080N-10SI part is unused and in its original packaging.
Return procedure for AT25080N-10SI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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