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Microchip Technology AT24C08N-10SI
- Part No.:
- AT24C08N-10SI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C08N-10SI.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,068
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Product details
Overview
AT24C08N-10SI from Microchip Technology (formerly Atmel) is an 8-Kbit (1024 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 2.7V to 5.5V, supports 100 kHz I²C bus speed, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in industrial sensor calibration storage, power supply configuration memory, and firmware parameter backup.
For engineers reviewing the AT24C08N-10SI datasheet, AT24C08N-10SI pinout, AT24C08N-10SI application, or AT24C08N-10SI equivalent, this page provides verified package mapping (8-lead JEDEC SOIC), confirmed 10-bit addressing, validated 16-byte page write capability, and real-world substitution guidance for industrial-grade serial EEPROM selection.
Technical Context
The AT24C08N-10SI implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs. Its internal architecture organizes 8 Kbits into 64 pages of 16 bytes each, requiring a 10-bit word address for random access and supporting both byte and page write modes.
Device addressing uses only the A2 pin (A0 and A1 are no-connect), enabling up to two AT24C08N-10SI devices on a single I²C bus. Write protection is controlled exclusively by the WP pin - tied to VCC to lock the full 8K array, or to GND for normal read/write operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8 bits), organized as 64 pages × 16 bytes - enables efficient block-level configuration storage without external address latching. |
| Supply Voltage Range | 2.7V to 5.5V - supports direct interfacing with 3.3V microcontrollers and legacy 5V systems without level-shifting. |
| I²C Clock Frequency | 100 kHz maximum - ensures reliable timing margins in electrically noisy industrial environments. |
| Write Cycle Time | 10 ms max - defines minimum delay between write commands; impacts firmware update latency and logging throughput. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - meets long-life requirements for field-deployed equipment with infrequent but critical parameter updates. |
| Operating Temperature | -40°C to +85°C - qualified for industrial ambient conditions, including motor control enclosures and outdoor metering units. |
| Package | 8-lead JEDEC SOIC (8S1), 150-mil width - compatible with standard surface-mount reflow profiles and automated optical inspection (AOI). |
Pinout & Package
AT24C08N-10SI is housed in an 8-lead JEDEC-standard SOIC package (8S1), measuring 3.99 mm × 4.98 mm × 1.73 mm, with gull-wing leads and 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No-connect (NC) | Internally unconnected; must be left floating or tied to GND/VCC - no effect on device addressing or function. |
| A1 | No-connect (NC) | Internally unconnected; no electrical or functional role in AT24C08N-10SI operation. |
| A2 | Device Address Input | Hardwired address bit determining one of two possible I²C addresses (1010xxx0/1); enables dual-device bus topology. |
| GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance PCB connection to minimize noise coupling. |
| VCC | Power Supply Input | Accepts 2.7–5.5V; bypass capacitor (0.1 µF ceramic) required within 5 mm for stable I²C communication. |
| WP | Write Protect Control | Active-high hardware lock: logic high disables all writes to the entire 8K array; essential for preventing accidental firmware corruption. |
| SCL | Serial Clock Input | Open-drain input synchronized to master clock; requires external pull-up (typically 2.2–10 kΩ) to VCC. |
| SDA | Serial Data I/O | Open-drain bidirectional line shared across I²C bus; same pull-up requirement as SCL; supports multi-master arbitration. |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte Page Write | Reduces I²C transaction count by up to 16× vs. byte writes - cuts firmware update time and bus occupancy in parameter-heavy applications. |
| Schmitt-trigger Inputs | Eliminates false triggering from slow-rising or noisy SCL/SDA edges - improves robustness in long-trace or high-EMI industrial layouts. |
| Hardware Write Protection | WP pin enables fail-safe locking of stored calibration data or security keys without software intervention or MCU dependency. |
| Low Standby Current | Max 4.0 µA at 2.7V - extends battery life in always-on sensor nodes and energy-harvesting edge devices. |
| 100-Year Data Retention | Guaranteed nonvolatile storage lifetime under industrial temperature cycling - eliminates need for periodic refresh or backup power. |
Applications
| Industrial Sensor Calibration | Power Supply Configuration |
|---|---|
|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Nonvolatile parameter repository accessed during system boot and recalibration routines via I²C. Use Value: Enables plug-and-play sensor replacement without manual recalibration; leverages 100-year retention to avoid field drift corrections. |
Use Scenario: Holding user-defined output voltage/current setpoints and protection thresholds in digitally controlled AC/DC power modules. IC Role / Device Role / Timing Role: Persistent configuration store updated only during service mode; read at power-on reset. Use Value: Supports field-upgradable power profiles without firmware reflashing; WP pin prevents runtime corruption during transient faults. |
| Firmware Parameter Backup | Smart Meter Security Keys |
|
Use Scenario: Archiving last-known operational state (e.g., fan speed, thermal limits) before unexpected shutdown in HVAC controllers. IC Role / Device Role / Timing Role: Fast-write-capable shadow memory that captures volatile MCU register states prior to brownout. Use Value: Achieves deterministic recovery using 10 ms write cycle and 16-byte page writes - minimizes data loss window. |
Use Scenario: Securely storing AES encryption keys and device-specific certificates in utility-grade smart electricity meters. IC Role / Device Role / Timing Role: Tamper-resistant key vault with hardware write lock (WP = VCC) enforced during production programming. Use Value: Meets IEC 62056-21 security requirements via physical write disable - prevents post-deployment key overwrite or extraction. |
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, 2.5–5.5V range, TSSOP-8 package; lacks -2.7 suffix designation but supports identical 2.7V min operation per datasheet. | Identical functionality but in thinner 1.2mm TSSOP package - preferred for space-constrained designs where SOIC height is prohibitive. | Select AT24C08D-SSHM-T when board thickness is constrained and TSSOP reflow compatibility is verified. |
| BR24G08NUX-10 | Rohm's 8K I²C EEPROM with 1.7–5.5V range, 400 kHz max speed, and built-in write protect register (no dedicated WP pin). | Software-configurable protection replaces hardware WP; supports faster 400 kHz writes but requires additional I²C command overhead. | Choose BR24G08NUX-10 when dynamic protection enable/disable is needed and higher bus speed justifies added firmware complexity. |
Compared with AT24C08N-10SI, AT24C08D-SSHM-T offers identical electrical behavior in a lower-profile package, while BR24G08NUX-10 trades hardware WP simplicity for flexible software-controlled write lock - impacting BOM cost, layout density, and firmware design effort.
Availability
AT24C08N-10SI is available at Aetrix Electronics and suitable for industrial sensor calibration, power supply configuration, and firmware parameter backup requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT24C08N-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 product continuity, qualification, and technical support for the AT24C series EEPROMs.
The AT24C08N-10SI belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power, nonvolatile data storage in industrial, automotive, and consumer control systems with stringent longevity and voltage-flexibility requirements.
FAQ
What is the exact memory organization of the AT24C08N-10SI?
The AT24C08N-10SI contains 8,192 bits organized as 1,024 words of 8 bits each (1024 × 8). Internally, it is structured into 64 pages of 16 bytes each, requiring a 10-bit data word address for random access. This layout directly supports efficient page-write operations and aligns with I²C protocol addressing conventions defined in the official Microchip datasheet.
Does the AT24C08N-10SI support 400 kHz I²C operation?
No, the AT24C08N-10SI is rated for 100 kHz maximum I²C clock frequency under its specified 2.7V–5.5V supply range. While some variants like the AT24C08-10PC support 400 kHz at 5V, the -2.7 suffix (as in AT24C08N-10SI-2.7) explicitly denotes the 100 kHz version optimized for low-voltage reliability - confirmed in the AC Characteristics table of the Microchip datasheet.
How does the WP pin function on the AT24C08N-10SI?
On the AT24C08N-10SI, the WP (Write Protect) pin is active-high: when pulled to VCC, it disables all write operations to the entire 8K memory array; when tied to GND, full read/write access is enabled. This hardware-level protection operates independently of I²C commands and is effective immediately upon power-up or voltage transition - a critical safeguard against firmware bugs or EMI-induced corruption.
Which pins are unused on the AT24C08N-10SI and how should they be handled?
Pins A0 and A1 are designated as no-connect (NC) on the AT24C08N-10SI per the official pin description. They must remain unconnected - neither tied to VCC nor GND - as internal termination is not guaranteed. Leaving them floating is acceptable; however, routing them to ground via 100 kΩ resistors is permissible for mechanical stability if no routing conflict exists.
What is the maximum write endurance and data retention for the AT24C08N-10SI?
The AT24C08N-10SI guarantees 1 million write/erase cycles per memory location and 100 years of data retention at +25°C, with derating applied per JEDEC JESD22-A117. These values are characterized and specified across the full -40°C to +85°C operating range - making it suitable for mission-critical industrial deployments where field replacement is impractical.
AT24C08N-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:
- 900 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C08N-10SI FAQ
1.How can I place an order for AT24C08N-10SI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08N-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 AT24C08N-10SI reliable?
The price and inventory of AT24C08N-10SI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C08N-10SI is usually 5 days.
3.What payment methods are accepted for AT24C08N-10SI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08N-10SI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08N-10SI?
AT24C08N-10SI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08N-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 AT24C08N-10SI?
For technical support, including AT24C08N-10SI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08N-10SI requirements.
6.How does Aetrix verify that AT24C08N-10SI is sourced from the original manufacturer or authorized distributors?
All AT24C08N-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 AT24C08N-10SI meets industry standards.
7.What is the process for return or replacement of AT24C08N-10SI?
All AT24C08N-10SI units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08N-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 AT24C08N-10SI part is unused and in its original packaging.
Return procedure for AT24C08N-10SI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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