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Microchip Technology AT24C08-10PI-2.5
- Part No.:
- AT24C08-10PI-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C08-10PI-2.5.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,126
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Product details
Overview
AT24C08-10PI-2.5 from Microchip Technology (formerly Atmel) is an 8K-bit (1024 × 8) two-wire serial EEPROM optimized for low-voltage embedded systems. It operates from 2.5V to 5.5V, supports 100 kHz I²C bus timing, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention. It is commonly used in industrial sensor calibration storage and power-meter firmware parameter backup.
For engineers reviewing the AT24C08-10PI-2.5 datasheet, AT24C08-10PI-2.5 pinout, AT24C08-10PI-2.5 application, or AT24C08-10PI-2.5 equivalent, key selection criteria include its 2.5V minimum operating voltage, 16-byte page write capability, industrial temperature range (−40°C to +85°C), SOIC-8 package compatibility, and I²C address configuration using A2 only.
Technical Context
The AT24C08-10PI-2.5 implements a standard I²C-compatible two-wire interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. Its memory array is organized as 64 pages of 16 bytes each, requiring a 10-bit word address for random access.
Device addressing uses only the A2 pin (A1 and A0 are NC), enabling up to two AT24C08 devices on a single bus. Write protection is controlled solely by the WP pin - tied to VCC to lock the full 8K array, or GND for normal read/write operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8192 bits (1024 × 8), sufficient for storing multiple sensor calibration tables or boot configuration registers |
| Supply Voltage Range | 2.5V to 5.5V - enables direct integration into 3.3V and 5V microcontroller systems without level-shifting |
| I²C Clock Frequency | 100 kHz max at 2.5V - ensures reliable communication in electrically noisy industrial environments |
| Write Cycle Time | 10 ms max - defines minimum interval between successive byte/page writes; impacts firmware update latency |
| Endurance | 1 million write cycles - supports frequent field-updatable parameters in smart meters or PLCs |
| Data Retention | 100 years at +25°C - guarantees long-term integrity of stored calibration coefficients or device IDs |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade deployment in outdoor or factory-floor equipment |
Pinout & Package
AT24C08-10PI-2.5 is supplied in an 8-lead JEDEC-standard SOIC (8S1) package, 3.9mm × 4.9mm body, 1.27mm pitch, with gull-wing leads. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A2 | Device Address Input | Hard-wired address bit; determines one of two possible I²C addresses (0x50 or 0x51) on shared bus |
| A1 | No Connect | Internally disconnected; must be left floating or tied to GND/VCC - no functional impact |
| A0 | No Connect | Internally disconnected; no connection required; unused in AT24C08 family |
| GND | Ground Reference | Return path for all internal circuitry and I²C pull-up current; requires low-impedance PCB plane |
| VCC | Power Supply | Primary supply input (2.5–5.5V); bypass capacitor (0.1 µF) mandatory near pin for noise suppression |
| WP | Write Protect Control | Active-high hardware lock: VCC = full-array protection; GND = normal read/write access |
| SCL | Serial Clock Input | Positive-edge sampled clock; Schmitt trigger input rejects <100 ns noise pulses per AC specs |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up (typically 2.2–10 kΩ) to VCC |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation down to 2.5V | Enables direct interfacing with 3.3V and mixed-voltage SoCs without level translators |
| 16-byte page write mode | Reduces I²C transaction overhead by up to 16× vs. byte-write for bulk configuration updates |
| Hardware write protection (WP pin) | Prevents accidental overwrites during power transients or firmware glitches - no software dependency |
| Schmitt-trigger SCL/SDA inputs | Ensures robust clock/data sampling in high-noise environments like motor drives or power supplies |
| Industrial temperature rating (−40°C to +85°C) | Validated operation across full range - eliminates derating concerns in uncontrolled enclosures |
Applications
| Smart Energy Meters | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Storing tariff schedules, metering constants, and tamper-event logs in utility-grade electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration and event-history storage with guaranteed 100-year data retention. Use Value: Eliminates battery-backed SRAM; withstands >1M write cycles during daily billing updates and fault logging. |
Use Scenario: Holding calibrated ADC offset/gain values and module identification data in distributed I/O terminals. IC Role / Device Role / Timing Role: Persistent parameter storage accessible via host controller's I²C master interface during power-up. Use Value: Enables field-replaceable modules to retain calibration without reprogramming; supports hot-swap operation. |
| Automotive Body Control Units | Medical Diagnostic Equipment |
Use Scenario: Saving user preferences (mirror position, seat settings) and diagnostic trouble codes (DTCs) in BCMs. IC Role / Device Role / Timing Role: Low-power, I²C-accessible nonvolatile memory operating across automotive temperature range. Use Value: Meets AEC-Q100 stress requirements when paired with appropriate board-level qualification; WP pin prevents DTC corruption during reset. |
Use Scenario: Storing device-specific calibration coefficients and regulatory compliance flags in portable ultrasound or ECG units. IC Role / Device Role / Timing Role: Secure, long-life storage for FDA-required traceability data and sensor linearization tables. Use Value: 100-year retention satisfies medical device shelf-life requirements; 2.5V operation aligns with low-power battery management ICs. |
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, 5V-only supply (4.5–5.5V), no WP pin - requires software-controlled write enable | Lacks hardware write protection and 2.5V support; incompatible I²C bus topology | Select only if SPI interface is already dominant in system and 5V rail is stable |
| 24LC08B-I/P | Same 8K-bit capacity and I²C interface, but rated for −40°C to +125°C and offers 1.8V–5.5V operation | Broadened voltage and temperature range; pinout identical; WP functionality preserved | Drop-in upgrade path when extended temp or lower 1.8V operation is needed |
Compared with M95M01-RMN6TP and 24LC08B-I/P, AT24C08-10PI-2.5 provides optimal balance of industrial temperature compliance, hardware write protection, and native 2.5V I²C compatibility - making it preferred for cost-sensitive, noise-prone 3.3V embedded control designs where SPI is not available.
Availability
AT24C08-10PI-2.5 is available at Aetrix Electronics and suitable for industrial automation, smart metering, and automotive body electronics requiring stable component supply across extended temperature and voltage ranges.
Supply support for AT24C08-10PI-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 product continuity, quality assurance, and long-term supply commitment for the AT24C EEPROM family.
The AT24C series was designed specifically for reliable, low-power, I²C-based nonvolatile storage in space-constrained embedded systems - emphasizing endurance, data retention, and noise-immune serial communication.
FAQ
What is the maximum I²C clock frequency supported by AT24C08-10PI-2.5?
The AT24C08-10PI-2.5 supports up to 100 kHz I²C clock frequency when operated at 2.5V. This is specified in the AC Characteristics table under fSCL for 2.5V/2.7V/1.8V versions. Higher frequencies (up to 400 kHz) require VCC ≥ 4.5V, which is outside the -2.5 suffix operating range. The 100 kHz limit ensures timing margin in electrically noisy industrial environments.
How many devices can share the same I²C bus with AT24C08-10PI-2.5?
Up to two AT24C08-10PI-2.5 devices can coexist on a single I²C bus. This is because the AT24C08 uses only the A2 pin for hardware addressing (A1 and A0 are no-connect), yielding two possible 7-bit device addresses: 0x50 (A2 = GND) and 0x51 (A2 = VCC). No additional address bits are available, limiting multi-drop configuration to two units per bus segment.
Is AT24C08-10PI-2.5 pin-compatible with other AT24Cxx variants in SOIC-8 package?
Yes, AT24C08-10PI-2.5 is pin-compatible with AT24C01A, AT24C02, AT24C04, and AT24C16 in the 8S1 (JEDEC SOIC) package. All share identical pinout: A2/A1/A0, GND, VCC, WP, SCL, SDA. However, internal address mapping differs - AT24C08 uses only A2, while AT24C01A/02 use A2–A0 and AT24C16 uses none - so firmware must match the specific device's addressing scheme.
What happens when the WP pin is left unconnected on AT24C08-10PI-2.5?
Leaving the WP pin unconnected on AT24C08-10PI-2.5 results in undefined write protection behavior due to floating input. The datasheet specifies WP must be actively driven to either VCC (full-array write protection) or GND (normal read/write). A weak pull-down resistor (e.g., 100 kΩ) is recommended if hardware protection is not required, ensuring predictable operation during power-up and noise events.
Does AT24C08-10PI-2.5 support partial page writes?
Yes, AT24C08-10PI-2.5 supports partial page writes within its 16-byte pages. After initiating a page write sequence, the internal address counter increments automatically; writing fewer than 16 bytes stops at the last transmitted byte, and subsequent writes (even after a stop condition) begin at the next sequential address. This enables efficient updates of non-contiguous configuration fields without overwriting adjacent data.
AT24C08-10PI-2.5 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:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C08-10PI-2.5 FAQ
1.How can I place an order for AT24C08-10PI-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08-10PI-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 AT24C08-10PI-2.5 reliable?
The price and inventory of AT24C08-10PI-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 AT24C08-10PI-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C08-10PI-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08-10PI-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08-10PI-2.5?
AT24C08-10PI-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08-10PI-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 AT24C08-10PI-2.5?
For technical support, including AT24C08-10PI-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08-10PI-2.5 requirements.
6.How does Aetrix verify that AT24C08-10PI-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C08-10PI-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 AT24C08-10PI-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C08-10PI-2.5?
All AT24C08-10PI-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08-10PI-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 AT24C08-10PI-2.5 part is unused and in its original packaging.
Return procedure for AT24C08-10PI-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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