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Microchip Technology AT24C08AN-10SI
- Part No.:
- AT24C08AN-10SI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C08AN-10SI.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,175
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Product details
Overview
AT24C08AN-10SI from Microchip Technology (formerly Atmel) is an 8K-bit (1024 × 8) I²C-compatible serial EEPROM with hardware write protection, low-voltage operation (2.7V–5.5V), and industrial temperature range (−40°C to +85°C). It features 16-byte page write capability, 100 kHz I²C speed at 2.7V, 1 million write cycles endurance, and 100-year data retention - deployed in embedded systems requiring nonvolatile parameter storage under constrained power and space.
For engineers reviewing the AT24C08AN-10SI datasheet, AT24C08AN-10SI pinout, AT24C08AN-10SI application, or AT24C08AN-10SI equivalent, key selection considerations include its 2.7V minimum VCC, WP-enabled hardware lock for critical configuration data, SOIC-8 industrial-grade packaging, and compatibility with microcontroller I²C peripherals operating down to 100 kHz.
Technical Context
The AT24C08AN-10SI implements a true 2-wire I²C interface with Schmitt-triggered, noise-filtered SDA/SCL inputs and open-drain bidirectional data transfer. Its internal address decoder uses only the A2 pin for device addressing (A0/A1 are NC), enabling up to two 8K devices on a single bus.
It supports byte and 16-byte page writes with self-timed 10 ms max write cycle, acknowledge polling for completion detection, and current-address/random/sequential read modes. The WP pin disables all writes when pulled high, protecting the full 8K array - distinct from AT24C02A/04A's partial-array protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8192 bits (1024 words × 8 bits); sufficient for storing firmware calibration tables, device IDs, or user settings in resource-constrained nodes. |
| Supply Voltage Range | 2.7V to 5.5V; enables direct interfacing with 3.3V and 5V microcontrollers without level-shifting. |
| I²C Clock Frequency | 100 kHz maximum at 2.7V; ensures reliable communication in noisy industrial environments where higher speeds risk timing violations. |
| Write Endurance | 1,000,000 cycles; supports frequent runtime parameter updates (e.g., energy metering logs, sensor calibration offsets). |
| Data Retention | 100 years at +25°C; guarantees long-term integrity of stored configuration without battery backup. |
| Operating Temperature | −40°C to +85°C; qualified for use in automotive body control modules, industrial PLC I/O expanders, and outdoor IoT gateways. |
| Write Protect Function | Hardware-enforced full-array lock via WP pin tied to VCC; prevents accidental overwrites during firmware updates or brown-out conditions. |
Pinout & Package
AT24C08AN-10SI is supplied in an 8-pin JEDEC SOIC package (8S1), 0.150" wide, with standard gull-wing leads and RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | No-connect (NC) for AT24C08A; unused in address decoding - must be left floating or grounded per layout guidelines. |
| A1 | Device Address Input | No-connect (NC) for AT24C08A; not used in device addressing - no external connection required. |
| A2 | Device Address Input | Hard-wired address bit; selects one of two possible 8K devices on shared I²C bus (A2 = 0 or 1). |
| GND | Ground Reference | Return path for VCC and I²C signals; requires low-impedance PCB plane connection to minimize noise coupling into SDA/SCL. |
| VCC | Power Supply | Primary supply input (2.7–5.5V); decoupling capacitor (0.1 µF ceramic) mandatory within 5 mm of pin. |
| WP | Write Protect Control | Active-high hardware lock; tied to VCC to disable all write operations, including page and byte writes. |
| SCL | Serial Clock Input | Master-generated clock for I²C synchronization; accepts 100 kHz waveform with min 4.7 µs low/high pulse width at 2.7V. |
| SDA | Serial Data I/O | Bidirectional open-drain line; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC for proper I²C bus operation. |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte page write mode | Reduces I²C transaction count by 16× vs. byte writes - cuts firmware update time and bus occupancy in configuration programming. |
| WP pin with full-array protection | Prevents corruption of entire 8K memory during power glitches or software faults - unlike AT24C02A/04A which only protects upper half. |
| 100-year data retention | Eliminates need for periodic refresh or backup power in sealed industrial enclosures where replacement is impractical. |
| 100 kHz I²C at 2.7V | Guarantees interoperability with legacy 3.3V microcontrollers lacking 400 kHz support while maintaining low-power operation. |
| Industrial temperature grade | Validated performance across −40°C to +85°C ambient - suitable for engine bay sensors, factory-floor HMIs, and telecom base station controllers. |
Applications
| Smart Energy Metering | Automotive Body Control Module |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration constants, and accumulated kWh readings across power outages. IC Role / Device Role / Timing Role: Nonvolatile configuration and event-log storage with guaranteed 100-year retention and WP-protected write integrity. Use Value: Eliminates supercapacitor or battery backup while ensuring regulatory compliance for 20+ year field deployment. |
Use Scenario: Saving seat/mirror position presets, door lock configurations, and lighting profiles in vehicle ECUs. IC Role / Device Role / Timing Role: I²C-connected parameter EEPROM interfaced directly to 3.3V automotive microcontrollers (e.g., Infineon AURIX). Use Value: WP pin prevents accidental overwrite during CAN-based firmware updates or ECU reset sequences. |
| Industrial PLC I/O Expander | Medical Diagnostic Device Calibration |
Use Scenario: Holding channel-specific gain/offset coefficients and module identification in modular analog input cards. IC Role / Device Role / Timing Role: Low-power (1.6 µA standby at 2.7V), noise-immune I²C EEPROM supporting hot-swap configuration reload. Use Value: Enables field-replaceable I/O modules with zero-config plug-and-play behavior and immunity to ESD transients (>3000V HBM). |
Use Scenario: Storing sensor-specific calibration matrices and date-stamped validation records in portable ultrasound or blood glucose analyzers. IC Role / Device Role / Timing Role: Tamper-resistant, WP-locked memory for FDA 21 CFR Part 11 audit trails and traceable calibration history. Use Value: Full-array write lock ensures calibration data cannot be altered post-certification - meeting Class II medical device data integrity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C08D-SSHM-T | Same 8K capacity, 2.5V–5.5V VCC range, TSSOP-8 package; lacks industrial temp rating (only commercial 0°C–70°C). | Not suitable for under-hood or uncontrolled-ambient deployments; limited to indoor consumer/office equipment. | Select only if cost-sensitive and operating environment remains within commercial temperature range. |
| M24C08-RMN6TP | STMicroelectronics 8K EEPROM; identical 2.7V–5.5V range, SOIC-8, industrial temp, but rated for 400 kHz at 2.7V (vs. 100 kHz for AT24C08AN-10SI). | Enables faster firmware updates in systems with capable I²C masters; otherwise pin- and functionally compatible drop-in. | Choose when higher-speed writes are needed without changing PCB layout or firmware timing logic. |
Compared with AT24C08D-SSHM-T, AT24C08AN-10SI provides guaranteed industrial temperature operation and lower minimum VCC headroom; versus M24C08-RMN6TP, it trades 400 kHz capability for proven legacy compatibility and tighter write-cycle timing control in noise-prone settings.
Availability
AT24C08AN-10SI is available at Aetrix Electronics and suitable for smart metering, automotive body electronics, industrial PLC expansion, and medical calibration storage requiring stable component supply across extended product lifecycles.
Supply support for AT24C08AN-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 AT24Cxx family of serial EEPROMs.
The AT24C08AN-10SI belongs to Microchip's legacy serial EEPROM product line, designed specifically for robust, low-power, I²C-based nonvolatile storage in industrial, automotive, and medical applications demanding long-term reliability and hardware-level data protection.
FAQ
What is the maximum I²C clock frequency supported by the AT24C08AN-10SI at 2.7V?
The AT24C08AN-10SI supports a maximum I²C clock frequency of 100 kHz when operated at VCC = 2.7V. This is explicitly specified in the AC Characteristics table for "2.7-, 2.5-, 1.8-volt" conditions. At 5.0V, it supports up to 400 kHz, but the -10SI suffix denotes the industrial 2.7V variant, so 100 kHz is the relevant operational limit for this specific part.
How does the Write Protect (WP) pin function on the AT24C08AN-10SI?
On the AT24C08AN-10SI, the WP pin provides hardware-level write protection for the entire 8K memory array when pulled high to VCC. Unlike earlier AT24C02A/04A variants that protect only the upper half, the AT24C08AN-10SI locks all pages - preventing any byte or page write, including during power-up transients or firmware errors. When WP is grounded, normal read/write operations resume.
What package type and lead finish does the AT24C08AN-10SI use?
The AT24C08AN-10SI is packaged in an 8-pin JEDEC SOIC (8S1), 0.150" wide, with gull-wing leads. It features a lead-free, RoHS-compliant matte tin finish. The ordering code suffix "-10SI" confirms the industrial temperature grade and SOIC packaging - distinct from PDIP (-10PI), TSSOP (-10TI), or 14-pin SOIC (-10SI-14) variants.
Can the AT24C08AN-10SI be used with a 1.8V I²C master?
No - the AT24C08AN-10SI is rated for VCC = 2.7V to 5.5V only. While the broader AT24C08A family includes -1.8 variants (e.g., AT24C08AN-10SI-1.8), the -10SI suffix specifically denotes the 2.7V–5.5V version. Using it with a 1.8V master violates the absolute minimum VCC specification and risks unreliable SDA/SCL logic levels and failed acknowledge cycles.
What is the memory organization and addressing scheme of the AT24C08AN-10SI?
The AT24C08AN-10SI contains 1024 words of 8 bits each (8K bits), internally organized as 4 blocks of 256 pages × 4 bytes. It uses a 10-bit word address for random access. Device addressing relies solely on the A2 pin (A0/A1 are NC), allowing two AT24C08AN-10SI devices on one I²C bus. The full 8-bit device address is 1010 A2 0 R/W, where R/W determines read (1) or write (0) mode.
AT24C08AN-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:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 4.5 µs
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C08AN-10SI FAQ
1.How can I place an order for AT24C08AN-10SI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08AN-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 AT24C08AN-10SI reliable?
The price and inventory of AT24C08AN-10SI 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 is usually 5 days.
3.What payment methods are accepted for AT24C08AN-10SI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08AN-10SI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08AN-10SI?
AT24C08AN-10SI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08AN-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 AT24C08AN-10SI?
For technical support, including AT24C08AN-10SI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08AN-10SI requirements.
6.How does Aetrix verify that AT24C08AN-10SI is sourced from the original manufacturer or authorized distributors?
All AT24C08AN-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 AT24C08AN-10SI meets industry standards.
7.What is the process for return or replacement of AT24C08AN-10SI?
All AT24C08AN-10SI units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08AN-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 AT24C08AN-10SI part is unused and in its original packaging.
Return procedure for AT24C08AN-10SI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C08AN-10SI Tags
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