Microchip Technology AT24C08N-10SC

Overview

AT24C08N-10SC from Microchip Technology (formerly Atmel) is an 8K-bit (1024 × 8) two-wire serial EEPROM with 2.7V to 5.5V supply operation, 100 kHz I²C bus compatibility at low voltage, 16-byte page write capability, and hardware write protection via the WP pin. It is used for nonvolatile parameter storage in embedded controllers, power management units, and sensor calibration modules.

For engineers reviewing the AT24C08N-10SC datasheet, AT24C08N-10SC pinout, AT24C08N-10SC application, or AT24C08N-10SC equivalent, key selection criteria include its 2.7V–5.5V operating range, 10 ms max write cycle time, 1 million endurance cycles, 100-year data retention, and JEDEC SOIC-8 package compatibility with industrial temperature support.

Technical Context

The AT24C08N-10SC implements a standard I²C-compatible two-wire interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. Its internal memory is organized as 64 pages of 16 bytes each, requiring a 10-bit data word address for random access.

Device addressing uses only the A2 pin (A0 and A1 are no-connect), enabling up to two AT24C08N-10SC devices on a single I²C bus. Write protection is controlled solely by the WP pin state-tied to VCC for full-array protection or GND for normal read/write operations.

Key Specifications

Pinout & Package

AT24C08N-10SC is housed in an 8-lead JEDEC-standard SOIC package (8S1), 3.9 mm × 4.9 mm footprint, 1.75 mm height, gull-wing leads, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Compared with AT24C08N-10SC, AT24C08D-SSHM-T offers identical functionality in a smaller TSSOP package but demands layout change, while M24C08-RMN6TP extends voltage flexibility and speed at 5V - both require validation of WP behavior and endurance under target write patterns.

Availability

AT24C08N-10SC is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, medical sensor modules, and automotive body control units requiring stable component supply across extended product lifecycles.

Supply support for AT24C08N-10SC 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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on reliability and long-term product support.

The AT24Cxx family was designed for robust, low-power nonvolatile data storage in resource-constrained embedded systems - emphasizing endurance, wide voltage operation, and I²C interoperability.

FAQ

What is the maximum I²C clock frequency supported by the AT24C08N-10SC?

The AT24C08N-10SC supports up to 100 kHz I²C clock frequency when operated at 2.7V–5.5V. This limit ensures timing margin compliance under worst-case voltage and temperature conditions. The device does not support 400 kHz at 2.7V; that speed is only guaranteed for 5.0V operation in higher-voltage variants like AT24C08-10SC. Always verify AC timing parameters from the official Microchip datasheet for your specific VCC and temperature conditions when designing with AT24C08N-10SC.

How many AT24C08N-10SC devices can share the same I²C bus?

Up to two AT24C08N-10SC devices can be addressed on a single I²C bus. This is because only the A2 pin is used for device addressing (A0 and A1 are no-connect), providing one binary address bit. When A2 is grounded, the device responds to address 0x50; when pulled high, it responds to 0x51. No additional address bits are available, so adding a third AT24C08N-10SC would cause address collision unless external multiplexing is implemented.

What happens to the AT24C08N-10SC's WP pin when left unconnected?

Leaving the WP pin of the AT24C08N-10SC unconnected is not recommended. The pin has no internal pull-up or pull-down, so its state is undefined and may float to a voltage that partially enables write protection - causing intermittent or complete failure of write operations. For reliable operation, WP must be intentionally tied to either GND (enabling writes) or VCC (disabling writes). A 10 kΩ pull-down resistor to GND is typical for default-write-enabled configurations in AT24C08N-10SC designs.

Does the AT24C08N-10SC support partial page writes?

Yes, the AT24C08N-10SC supports partial page writes. After initiating a page write sequence, the host controller may transmit fewer than 16 bytes - for example, 3 or 7 bytes - and terminate with a STOP condition. The EEPROM internally increments the address counter and writes only the supplied bytes into consecutive locations within the current 16-byte page boundary. This capability simplifies small-data updates without requiring full-page reads-modify-writes, preserving endurance and reducing I²C bus time in AT24C08N-10SC implementations.

What is the meaning of the "-10SC" suffix in AT24C08N-10SC?

The "-10SC" suffix in AT24C08N-10SC indicates two key attributes: "10" denotes the device's 10 ms maximum write cycle time, and "SC" specifies the 8-lead JEDEC SOIC package (8S1). The "N" in the base part number signifies a lead-free, RoHS-compliant version. This full ordering code distinguishes it from PDIP (PC), TSSOP (TC), or industrial-temp (I) variants - confirming that AT24C08N-10SC is a commercial-grade, SOIC-packaged, 10 ms write-cycle EEPROM.