Microchip 24AA04T-I/OT: A Compact Powerhouse for Serial Data Storage

In the realm of embedded systems and IoT devices, efficient and reliable non-volatile memory is a cornerstone. The Microchip 24AA04T-I/OT stands out as a premier solution, offering 4Kbits (512 x 8) of Electrically Erasable Programmable Read-Only Memory (EEPROM) in an incredibly space-saving SOT-23 package. This device is engineered for applications where board real estate is at a premium but performance cannot be compromised.

Operating as a serial EEPROM with an I²C (Inter-Integrated Circuit) interface, the 24AA04T-I/OT simplifies communication with a host microcontroller, requiring only two bidirectional lines: Serial Clock (SCL) and Serial Data (SDA). This two-wire interface drastically reduces the number of I/O pins needed, making it an ideal choice for compact and cost-sensitive designs. The chip supports a 400 kHz clock frequency, ensuring robust and sufficiently fast data transfer for a wide array of applications, from sensor calibration data to device configuration settings.

A key feature of this memory chip is its hardware write-protect pin. This provides an essential layer of data security, allowing the system designer to prevent accidental or malicious writes to the entire memory array, thereby safeguarding critical data. Furthermore, the device is designed for low-power operation, which is paramount for battery-powered and portable electronics. It features a low standby current and active current, extending battery life significantly.

The 24AA04T-I/OT is built to endure challenging conditions, supporting a wide voltage range (1.7V to 5.5V) and offering high reliability with endurance of 1,000,000 erase/write cycles and data retention exceeding 200 years. Its extended industrial temperature range (-40°C to +85°C) ensures stable performance in harsh environments, from industrial automation to outdoor automotive systems.

ICGOODFIND: The Microchip 24AA04T-I/OT is a highly integrated, reliable, and secure serial EEPROM solution. Its combination of a tiny form factor, industry-standard I²C interface, robust data protection, and exceptional low-power characteristics makes it an superior choice for designers aiming to enhance their product's capabilities without increasing its size or power consumption.

Keywords: I²C EEPROM, Low-Power Memory, Serial Memory Chip, Non-Volatile Storage, Hardware Write-Protect