The AT24C02C-SSHM-T is a 2 Kbit I²C-compatible serial EEPROM designed for reliable non-volatile data storage in industrial, automotive, and consumer electronics. Organized as 256 x 8 bits, it operates from 1.7V to 5.5V, supports 1 MHz clock speeds, and offers 1 million write cycles with 100-year data retention. Its SOIC-8 package and hardware write protection make it ideal for space-constrained, high-reliability applications.
How Does the AT24C02C-SSHM-T Compare to Other EEPROMs?
The AT24C02C-SSHM-T outperforms alternatives with:
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Wider Voltage Range: 1.7V–5.5V vs. competitors limited to 2.5V–5.5V .
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Higher Endurance: 1M write cycles vs. 100K in basic EEPROMs .
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Lower Power: 6 µA standby current vs. 10 µA in similar devices .
Chart: AT24C02C-SSHM-T vs. Competing Models
| Feature | AT24C02C-SSHM-T | AT24C02D-SSHM-T | AT24C02C-MAHM-T |
|---|---|---|---|
| Voltage Range | 1.7V–5.5V | 1.7V–5.5V | 1.7V–5.5V |
| Max Clock Frequency | 1 MHz | 1 MHz | 1 MHz |
| Write Cycles | 1M | 1M | 1M |
What Are the Key Specifications of the AT24C02C-SSHM-T?
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Interface: I²C (2-wire), supporting up to 8 devices on one bus .
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Speed: 550 ns access time, 5 ms max write cycle .
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Temperature Range: -40°C to +85°C (industrial grade) .
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Packaging: SOIC-8, tape-and-reel for automated assembly.
Why Choose the AT24C02C-SSHM-T for Automotive Applications?
Its AEC-Q100 qualification, 100-year data retention, and -40°C to +125°C operational range (Grade 1) make it suitable for:
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ECU Memory: Stores calibration data and fault logs.
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Infotainment Systems: Retains user preferences and settings .
How to Implement the AT24C02C-SSHM-T in IoT Devices?
Typical circuits include:
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Pull-Up Resistors: 4.7 kΩ on SDA/SCL lines for signal integrity.
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Write Protection: WP pin tied to VCC for hardware lock.
Buying Tips
When sourcing the AT24C02C-SSHM-T:
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Verify Authenticity: Purchase from authorized distributors like Fly-Wing Technology to avoid counterfeits.
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Check Packaging: Tape-and-reel (TR) is preferred for mass production.
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Alternatives: AT24C02C-SSHM-B (Microchip) offers identical specs with minor packaging differences.
As a trusted Electronic Components Source, Fly-Wing Technology (HK) Co., Limited provides genuine AT24C02C-SSHM-T units at competitive prices, backed by a global supply chain and same-day shipping from Hong Kong warehouses.
Electronic Components Expert Views
“The AT24C02C-SSHM-T’s blend of low-voltage operation and industrial-grade robustness makes it a go-to for embedded systems. Designers should leverage its cascading feature for multi-device setups but must adhere to I²C timing constraints to avoid bus collisions.”
FAQ
Q: Can the AT24C02C-SSHM-T operate at 3.3V?
A: Yes, it supports 1.7V–5.5V, making it compatible with 3.3V systems .
Q: How many devices can share an I²C bus?
A: Up to 8, using unique address pins (A0–A2) .
Q: Is it RoHS compliant?
A: Yes, it meets RoHS3 and halogen-free standards .
In the design of electronic products, non-volatile memory plays a crucial role. It is used to store configuration information, calibration data, serial numbers, and other critical data for devices, ensuring that this information persists even when the power is off. Today, we will introduce a serial EEPROM chip produced by Microchip Technology—the AT24C02C-SSHM-T. This chip has gained attention for its high performance, high reliability, and wide range of applications.
1、 Overview of Main Specifications
The AT24C02C-SSHM-T chip boasts a storage capacity of 2K bits (256×8), equivalent to 2048 bits. It employs an I2C (2-wire) serial interface for seamless communication with microcontrollers or other peripheral devices. The chip supports clock frequencies of 400kHz (1.7V~2.5V) and 1MHz (>2.5V), features a wide voltage range (1.7V~5.5V or 1.8V~5.5V, depending on the model), and is suitable for various application scenarios. Additionally, its operating temperature range is typically -40°C to 85°C, but different temperature ranges are available to meet the needs of different environments.
2、 Detailed Functional Characteristics
- High Reliability: The AT24C02C-SSHM-T chip features built-in data protection and error detection and correction functions, ensuring data reliability and integrity. With up to 1 million erase/write cycles and a data retention period exceeding 100 years, it provides robust support for the long-term stable operation of devices.
- Write Protection: The chip offers a hardware write protection pin to safeguard stored data from accidental erasure or overwriting. This feature is particularly important in scenarios where sensitive data or configuration information needs protection.
- Self-timed Erase and Write Cycle: The AT24C02C-SSHM-T chip boasts a maximum erase and write cycle of 5 milliseconds, simplifying the interaction with the memory and enhancing device response speed.
- Support for Multiple Devices on the Bus: The chip supports up to eight devices connected to the bus, facilitating expansion and connection of multiple memories to meet the needs of complex systems.
3、 Applications Showcase
The AT24C02C-SSHM-T chip is widely used in various scenarios requiring small-capacity non-volatile memory. In electronic devices, it stores configuration information, calibration data, etc.; in industrial control, it stores sensor data, control parameters, etc.; in automotive electronics, it stores vehicle diagnostic data, configuration information, etc. Additionally, the chip is widely used in smart meters, smart cards, consumer electronics, and medical devices, providing robust support for the stable operation and data processing of these products.
4、 Pin and Package Introduction
The AT24C02C-SSHM-T chip adopts an 8-pin package, with specific pin configurations and package forms varying depending on the model and supplier. The pin diagram typically includes power pins (VCC), ground pins (GND), clock pins (SCL), data pins (SDA), and write protection pins (WP). The design of these pins allows the chip to be easily connected to the PCB and communicate with other electronic components.
5、 Conclusion
The AT24C02C-SSHM-T chip is highly favored for its high performance, high reliability, and wide range of applications. It not only meets the memory requirements of various electronic devices but also provides robust support for their stable operation and data processing. In future electronic product designs, the AT24C02C-SSHM-T chip will continue to play a crucial role, bringing more convenience and possibilities to our lives and work.
We hope this blog helps you better understand the features and applications of the AT24C02C-SSHM-T chip. If you have any questions or need further information about this chip, please feel free to contact us.
