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Microchip Technology AT24C08AN-10SI-2.7
- Part No.:
- AT24C08AN-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C08AN-10SI-2.7.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,260
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Product details
Overview
AT24C08AN-10SI-2.7 from Microchip Technology (formerly Atmel) is an 8K-bit (1024 × 8) I²C-compatible serial EEPROM optimized for low-voltage industrial applications. It operates from 2.7V to 5.5V, supports 100 kHz I²C bus speed, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in embedded systems for storing calibration data, configuration settings, and firmware parameters.
For engineers reviewing the AT24C08AN-10SI-2.7 datasheet, AT24C08AN-10SI-2.7 pinout, AT24C08AN-10SI-2.7 application, or AT24C08AN-10SI-2.7 equivalent, key selection considerations include its 2.7V–5.5V supply range, 8-pin SOIC package, industrial temperature rating (−40°C to +85°C), page-write capability (16-byte pages), and hardware write-protect functionality.
Technical Context
The AT24C08AN-10SI-2.7 implements a two-wire I²C interface with Schmitt-triggered, noise-filtered inputs and open-drain SDA/SCL pins compatible with standard I²C bus protocols. It uses a 10-bit internal address counter for random and sequential reads, with memory organized into four 256-page blocks of 4 bytes each.
Device addressing relies solely on the A2 pin (A0 and A1 are no-connect), enabling up to two AT24C08A devices on a single I²C bus. Write protection is controlled by the WP pin: tied to VCC to lock the full 8K array, or grounded for normal read/write access.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8192 bits (1024 × 8), supporting persistent storage of device-specific configuration or calibration data without external refresh. |
| Supply Voltage Range | 2.7V to 5.5V - enables direct interfacing with 3.3V microcontrollers and compatibility with mixed-voltage industrial power rails. |
| I²C Bus Speed | 100 kHz maximum - ensures reliable operation under electrically noisy industrial conditions while maintaining timing margin. |
| Write Cycle Time | 10 ms max - defines minimum interval between write commands; requires polling or timeout handling in firmware. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - suitable for field-updatable systems requiring long-term reliability without wear leveling. |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments including factory automation, metering, and motor control systems. |
| ESD Protection | >3000V HBM - provides robustness against handling and system-level electrostatic discharge events. |
Pinout & Package
AT24C08AN-10SI-2.7 is housed in an 8-pin JEDEC SOIC (8S1) package, 0.150" wide, with gull-wing leads and surface-mount footprint. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect | Internally unconnected; must be left floating or tied to GND/VCC - no effect on device addressing or operation. |
| A1 | No Connect | Internally unconnected; no functional role in AT24C08A family - differs from AT24C02A/04A where A1 is used for addressing. |
| A2 | Device Address Input | Hardwired address bit: determines one of two possible I²C device addresses (0x50 or 0x51) on shared bus. |
| GND | Ground Reference | Return path for all internal circuitry and I/O; must be connected to system ground plane with low impedance. |
| VCC | Power Supply | Primary supply input (2.7V–5.5V); decoupling capacitor (0.1 µF ceramic) required within 1 cm of pin. |
| WP | Write Protect Control | Hardware-enforced lock: high = full 8K array write-protected; low = full read/write access - no software override. |
| SCL | Serial Clock Input | Master-generated clock signal; open-drain input requiring external pull-up resistor (typically 4.7 kΩ to VCC). |
| SDA | Serial Data I/O | Bidirectional, open-drain data line; shared across I²C bus; requires same pull-up as SCL. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin disables all write operations when pulled high - prevents accidental overwrites during power-up, brown-out, or firmware faults. |
| Low-Voltage Operation | Functional down to 2.7V supply - eliminates need for level shifters when interfacing with 3.3V or mixed-voltage SoCs and MCUs. |
| 16-Byte Page Write | Enables burst programming of up to 16 bytes per write cycle - reduces total write time vs. byte-by-byte writes for configuration blocks. |
| Noise-Resilient I²C Interface | Schmitt-trigger inputs and built-in filtering suppress EMI-induced glitches - critical for stable communication in motor drives or PLCs. |
| Industrial Temperature Rating | Qualified from −40°C to +85°C - supports deployment in uncontrolled enclosures, outdoor equipment, and automotive under-hood modules. |
Applications
| Smart Energy Metering | Industrial PLC Configuration |
|---|---|
|
Use Scenario: Storing tariff tables, meter calibration coefficients, and tamper-event logs in electricity/water/gas meters operating at 3.3V with extended field life. IC Role / Device Role / Timing Role: Nonvolatile parameter storage IC interfaced to an ARM Cortex-M MCU via I²C; retains data across power cycles and battery backup gaps. Use Value: Enables field-upgradable calibration without reprogramming flash; 100-year retention ensures compliance with utility certification requirements. |
Use Scenario: Holding I/O mapping, PID tuning parameters, and user-defined logic states in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Dedicated configuration EEPROM accessed during boot and runtime by the PLC's main controller; isolated from firmware update partitions. Use Value: Allows safe parameter changes without firmware reload; WP pin prevents corruption during hot-swap I/O module insertion. |
| Medical Diagnostic Device Calibration | Automotive Body Control Module (BCM) |
|
Use Scenario: Storing sensor offset/gain values and diagnostic fault history in portable ultrasound or blood glucose analyzers with battery-backed operation. IC Role / Device Role / Timing Role: Low-power serial EEPROM interfaced to a low-power MCU; accessed only during calibration or error logging - minimal active current draw. Use Value: Meets IEC 62304 Class C safety requirements via deterministic write timing (10 ms max) and verified endurance (1M cycles). |
Use Scenario: Saving seat position memory, mirror presets, and lighting profiles in automotive BCMs operating across vehicle battery voltage swings (9V–16V with LDO regulation to 3.3V). IC Role / Device Role / Timing Role: System-level configuration storage IC; powered from regulated 3.3V rail; WP pin tied to MCU-controlled GPIO for secure updates. Use Value: Survives automotive load-dump transients due to >3000V HBM ESD rating and −40°C to +85°C qualification - no derating required. |
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 (vs. I²C); 2.5V–5.5V supply; 5 ms write cycle; 8-lead SOIC package. | Requires SPI-capable host MCU; incompatible bus protocol; faster write but needs different driver stack. | Select when existing design uses SPI peripherals and board layout cannot accommodate I²C pull-ups or arbitration logic. |
| BR24G08FJ-WE2 | 8K-bit I²C EEPROM; 1.7V–5.5V supply; 1 MHz bus support; 8-lead TSSOP package; AEC-Q100 Grade 2 qualified. | Broader voltage range and automotive qualification; same pinout but different package (TSSOP vs. SOIC); higher speed. | Prefer for new automotive designs requiring AEC-Q100 compliance; not drop-in due to package and thermal profile differences. |
Compared with M95M01-RMN6TP and BR24G08FJ-WE2, the AT24C08AN-10SI-2.7 offers proven industrial I²C interoperability, strict 2.7V–5.5V operation matching legacy 3.3V systems, and SOIC packaging optimized for manual rework and wave soldering - making it ideal for cost-sensitive industrial control upgrades.
Availability
AT24C08AN-10SI-2.7 is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, medical diagnostics, and automotive body control modules requiring stable component supply across multi-year production cycles.
Supply support for AT24C08AN-10SI-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 AT24CxxA EEPROM family.
The AT24C08A series was designed specifically for industrial and commercial systems needing reliable, low-power, I²C-based nonvolatile storage - emphasizing write-protection integrity, voltage flexibility, and long-term data retention.
FAQ
What is the maximum I²C clock frequency supported by the AT24C08AN-10SI-2.7?
The AT24C08AN-10SI-2.7 supports up to 100 kHz I²C clock frequency under its 2.7V–5.5V operating range. This is specified in the AC Characteristics table for 2.7V, 2.5V, and 1.8V versions. While 5V variants support 400 kHz, the "-2.7" suffix confirms this part is rated for 100 kHz maximum - ensuring timing margin in electrically noisy industrial environments.
How does the Write Protect (WP) pin function on the AT24C08AN-10SI-2.7?
On the AT24C08AN-10SI-2.7, the WP pin provides hardware-level write protection: when pulled high (to VCC), the entire 8K memory array is locked against write or erase operations. When grounded, full read/write access is enabled. This behavior is fixed and cannot be overridden by I²C commands - a critical safeguard during power transitions or firmware errors.
Is the AT24C08AN-10SI-2.7 pin-compatible with other AT24CxxA devices in SOIC packages?
Yes - the AT24C08AN-10SI-2.7 uses the same 8-pin SOIC (8S1) footprint and pinout as AT24C02A/04A/08A variants in the same package. However, A0 and A1 are no-connect on AT24C08AN-10SI-2.7 (unlike AT24C02A), so those pins may be left floating or tied without affecting operation - no PCB change is needed for migration within the same package family.
What is the memory organization and addressing scheme of the AT24C08AN-10SI-2.7?
The AT24C08AN-10SI-2.7 contains 1024 words of 8 bits each (8K-bit), internally organized as four 256-page blocks of 4 bytes. It uses a 10-bit word address for random access. Device addressing uses only the A2 pin (A0/A1 are NC), allowing two devices (0x50 and 0x51) on one I²C bus - distinct from AT24C02A which uses all three address pins.
Does the AT24C08AN-10SI-2.7 require external pull-up resistors on SDA and SCL lines?
Yes - the AT24C08AN-10SI-2.7 has open-drain SDA and SCL pins and requires external pull-up resistors to VCC. Typical values are 4.7 kΩ for 100 kHz operation on short traces; value must be adjusted based on bus capacitance and speed. Pull-ups are mandatory for proper I²C bus arbitration and signal integrity - omission causes communication failure.
AT24C08AN-10SI-2.7 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C08AN-10SI-2.7 FAQ
1.How can I place an order for AT24C08AN-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08AN-10SI-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 AT24C08AN-10SI-2.7 reliable?
The price and inventory of AT24C08AN-10SI-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 AT24C08AN-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C08AN-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08AN-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08AN-10SI-2.7?
AT24C08AN-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08AN-10SI-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 AT24C08AN-10SI-2.7?
For technical support, including AT24C08AN-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08AN-10SI-2.7 requirements.
6.How does Aetrix verify that AT24C08AN-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C08AN-10SI-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 AT24C08AN-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C08AN-10SI-2.7?
All AT24C08AN-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08AN-10SI-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 AT24C08AN-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT24C08AN-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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