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Microchip Technology AT24C08AN-10SI-2.5
- Part No.:
- AT24C08AN-10SI-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C08AN-10SI-2.5.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,440
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Product details
Overview
AT24C08AN-10SI-2.5 from Microchip Technology (formerly Atmel) is an 8K-bit (1024 × 8) I²C-compatible serial EEPROM with hardware write protection, optimized for low-voltage embedded systems operating from 2.5V to 5.5V. It supports 100 kHz I²C communication at 2.5V, features 16-byte page write capability, 1 million write cycles endurance, and 100-year data retention - used in industrial sensor calibration storage and firmware parameter backup.
For engineers reviewing the AT24C08AN-10SI-2.5 datasheet, AT24C08AN-10SI-2.5 pinout, AT24C08AN-10SI-2.5 application, or AT24C08AN-10SI-2.5 equivalent, key selection considerations include its industrial temperature range (−40°C to +85°C), SOIC-8 package, WP pin-based hardware write protection, 2.5V minimum supply compatibility, and 16-byte page write mode.
Technical Context
The AT24C08AN-10SI-2.5 implements a 2-wire I²C interface with Schmitt-triggered, noise-filtered SDA/SCL inputs and open-drain bidirectional data transfer. Its device addressing uses only the A2 pin (A0 and A1 are NC), enabling up to two AT24C08A devices on a single bus.
Internally organized as four 256-page blocks of 4 bytes each, it requires a 10-bit word address for random access and supports byte-write and 16-byte page-write operations with self-timed 10 ms max write cycles. Write protection is asserted when WP = VCC, locking the full 8K array.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8 bits), organized in 4 blocks × 256 pages × 4 bytes - enables efficient parameter grouping and sector-level management. |
| Supply Voltage Range | 2.5V to 5.5V - supports direct interfacing with 2.5V/3.3V microcontrollers without level shifting. |
| I²C Clock Frequency | 100 kHz at 2.5V - ensures reliable timing margin under low-voltage operation with standard pull-up resistors. |
| Write Cycle Time | Max 10 ms - defines minimum inter-write interval; polling or timeout-based completion detection required. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - validated for long-life field deployments in metering and industrial control. |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments including factory automation and outdoor telemetry nodes. |
| ESD Protection | >3000V HBM - reduces susceptibility to handling damage during PCB assembly and field service. |
Pinout & Package
AT24C08AN-10SI-2.5 is housed in an 8-pin JEDEC SOIC package (8S1), 0.150" wide, with standard gull-wing leads and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | No-connect (NC) for AT24C08A - must be left unconnected or tied to GND/VCC without effect. |
| A1 | Device Address Input | No-connect (NC) for AT24C08A - unused; no impact on addressing or functionality. |
| A2 | Device Address Input | Hard-wired address bit - determines one of two possible I²C slave addresses (0x50 or 0x51) on shared bus. |
| GND | Ground Reference | Return path for VCC and signal logic; requires low-impedance connection to system ground plane. |
| VCC | Power Supply | 2.5V–5.5V main supply - decoupling capacitor (0.1 µF ceramic) recommended within 5 mm of pin. |
| WP | Write Protect Control | Hardware lock: WP = VCC disables all writes to entire 8K array; WP = GND enables normal R/W. |
| SCL | Serial Clock Input | Positive-edge sampled clock - driven by master; requires external pull-up resistor (typically 2.2–10 kΩ). |
| SDA | Serial Data I/O | Bidirectional open-drain bus line - shared across multiple I²C devices; requires same pull-up as SCL. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin asserts full-array lock at VCC - eliminates software bugs or accidental overwrites in safety-critical parameter storage. |
| Low-Voltage Operation | Functional down to 2.5V supply - enables direct integration with 2.5V FPGA I/O banks and ultra-low-power MCUs. |
| 16-Byte Page Write Mode | Reduces I²C transaction overhead by 16× vs. byte-write - cuts firmware update time and bus occupancy in configuration loading. |
| Noise-Immune Inputs | Schmitt-trigger + filtering on SDA/SCL - rejects EMI spikes common in motor-drive or power-conversion subsystems. |
| Industrial Temperature Rating | −40°C to +85°C operation - validated for use in DIN-rail PLCs, HVAC controllers, and outdoor utility meters. |
Applications
| Smart Energy Meter Calibration Storage | Industrial PLC Configuration Backup |
|---|---|
Use Scenario: Storing calibrated ADC offset/gain coefficients and tariff tables in electricity meters exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Nonvolatile parameter register holding metrology-critical values between power cycles and firmware updates. Use Value: 100-year retention and 1M write cycles ensure calibration integrity over 20+ year field life without recalibration. |
Use Scenario: Preserving user-defined I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent configuration store accessed via I²C during boot and runtime reconfiguration. Use Value: WP pin prevents unintended writes during hot-plug I/O module insertion or ESD events in factory floors. |
| Medical Device Setup Profile Memory | Automotive Body Control Module Settings |
Use Scenario: Saving clinician-selected operational modes, alarm limits, and display preferences in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-power serial memory retaining user settings across battery swaps and sleep/wake cycles. Use Value: 2.5V operation allows direct interface with 2.5V medical SoCs; 100 kHz I²C avoids interference with sensitive analog front-ends. |
Use Scenario: Storing seat/mirror position presets, lighting profiles, and door lock behavior in automotive BCMs. IC Role / Device Role / Timing Role: Robust nonvolatile storage for end-user customization data subject to frequent updates. Use Value: Industrial-grade temp range and >3000V HBM ESD rating withstand automotive assembly and service environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95M01-RMN6TP | 1 Mbit SPI interface, 2.5–5.5V, 5 MHz max clock - no I²C compatibility; requires different MCU peripheral and firmware driver. | Used where high-speed sequential logging is needed; not drop-in for I²C bus-constrained designs. | Select only if SPI interface is available and higher throughput justifies driver rewrite. |
| BR24G08NUX-25 | 8 Kbit I²C EEPROM, 1.7–5.5V, 1 MHz max (at ≥2.5V), same SOIC-8 package - tighter VIL/VIH thresholds and faster timing. | Supports faster 400 kHz operation at 2.5V (AT24C08AN-10SI-2.5 limited to 100 kHz at 2.5V). | Prefer for new designs needing higher I²C bandwidth at low voltage; verify timing margins with host controller. |
Compared with M95M01-RMN6TP and BR24G08NUX-25, AT24C08AN-10SI-2.5 offers guaranteed 100 kHz I²C operation at 2.5V with proven industrial reliability, while avoiding SPI driver migration or timing validation overhead - making it optimal for cost-sensitive, I²C-limited industrial control upgrades.
Availability
AT24C08AN-10SI-2.5 is available at Aetrix Electronics and suitable for industrial sensor calibration storage, PLC configuration backup, and medical device setup profile retention requiring stable component supply across extended product lifecycles.
Supply support for AT24C08AN-10SI-2.5 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 support for the AT24CxxA EEPROM family, delivering high-reliability nonvolatile memory solutions for industrial, automotive, and consumer applications.
The AT24C08A series was designed specifically for space-constrained, low-power embedded systems requiring robust, pin-compatible serial EEPROM with hardware write protection and extended temperature operation.
FAQ
What is the maximum I²C clock frequency supported by AT24C08AN-10SI-2.5 at 2.5V?
The AT24C08AN-10SI-2.5 supports up to 100 kHz I²C clock frequency when operated at 2.5V. This is specified in the AC Characteristics table under "2.7-, 2.5-, 1.8-volt" conditions. At 5.0V, it supports 400 kHz, but that mode is not applicable to the -2.5 suffix variant's rated voltage range.
Is AT24C08AN-10SI-2.5 pin-compatible with other AT24C08A variants in SOIC-8 packages?
Yes, AT24C08AN-10SI-2.5 shares identical pinout and footprint with all AT24C08A SOIC-8 variants (e.g., AT24C08A-10SI, AT24C08AN-10SC-2.5). The 'N' denotes lead-free finish, 'SI' indicates industrial temperature grade, and '-2.5' specifies 2.5V–5.5V operation - all retain the same 8-pin SOIC mechanical and electrical interface.
How does the Write Protect (WP) pin function on AT24C08AN-10SI-2.5?
On AT24C08AN-10SI-2.5, the WP pin provides hardware-level write inhibition: when pulled to VCC, it locks the entire 8K array against write operations (including page and byte writes); when grounded, full read/write access is enabled. This behavior is distinct from AT24C02A/04A, which protect only portions of their arrays.
What is the memory organization and addressing scheme of AT24C08AN-10SI-2.5?
AT24C08AN-10SI-2.5 is internally organized as 1024 words × 8 bits (8 Kbit), requiring a 10-bit word address for random access. Device addressing uses only the A2 pin (A0/A1 are NC), allowing two devices per I²C bus with base addresses 0x50 and 0x51. Page writes span 16 bytes with automatic address increment within the page boundary.
Does AT24C08AN-10SI-2.5 support partial page writes?
Yes, AT24C08AN-10SI-2.5 supports partial page writes: after initiating a page write sequence, the host may transmit fewer than 16 bytes before issuing a STOP condition. The EEPROM accepts all transmitted bytes, increments the internal address counter accordingly, and writes them to consecutive locations within the same 16-byte page - no alignment or padding required.
AT24C08AN-10SI-2.5 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:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 4.5 µs
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C08AN-10SI-2.5 FAQ
1.How can I place an order for AT24C08AN-10SI-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08AN-10SI-2.5 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 AT24C08AN-10SI-2.5 reliable?
The price and inventory of AT24C08AN-10SI-2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C08AN-10SI-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C08AN-10SI-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08AN-10SI-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08AN-10SI-2.5?
AT24C08AN-10SI-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08AN-10SI-2.5 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 AT24C08AN-10SI-2.5?
For technical support, including AT24C08AN-10SI-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08AN-10SI-2.5 requirements.
6.How does Aetrix verify that AT24C08AN-10SI-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C08AN-10SI-2.5 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 AT24C08AN-10SI-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C08AN-10SI-2.5?
All AT24C08AN-10SI-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08AN-10SI-2.5, 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 AT24C08AN-10SI-2.5 part is unused and in its original packaging.
Return procedure for AT24C08AN-10SI-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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