AT24C04B-TSU-T Integrated Circuits (ICs)

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Memory, as one of the main storage devices, is widely used in digital field. AT24C04B-TSU-T is one of the most widely used memory. This article will introduce its application field and working principles.

1. Application field of AT24C04B-TSU-T

AT24C04B-TSU-T is a 4KBit serial EEPROM with an I2C interface, applicable to various systems with an I2C bus 4.7K Pullup Resistor and with under 3V3 voltage operation. AT24C04B-TSU-T is widely used in industrial control and consumer electronics such as LED lighting, mobile phones, memory cards, security instruments, and automotive electronics. Its specific application field is as follows:

• Industrial Automation: Used for recording and storing product parameters, power parameters, and data collection in factories.
• Medical Health: Used for storing medical images and patient date in medical instruments.
• Consumer Electronics: Used for storing product parameters in consumer products.
• Automotive Electronics: Used for storing fuel parameters, automatic control, car navigation systems and multimedia.
• Smart Home: Used in smart home systems such as access control, fire protection, intruder detection, and environmental monitoring.

2. Working Principle of AT24C04B-TSU-T

AT24C04B-TSU-T has 4K bits of EEPROM, divided into 32 pages, each page has 8 bytes, and each byte has 8 bits. It operates with a voltage between 2.5V and 5.5V, and its data retention period is up to 100 years. It works on two-wire I2C bus, which supports read/write operations.

In order to access a certain byte address, after the controlling CPU outputs the I2C START condition, it will send the Slave Device Address (SDA) and Slave Select Bits (SSB). Then the controlling CPU sends the 8-bit address 0000 0000 and a write operation (write: 0) bit to designate the data location. The controlling CPU then sends the 8 bits of data. After that, the controlling CPU issues the I2C STOP condition.

In order to read a certain byte address, after the controlling CPU outputs the I2C START condition, it will send the Slave Device Address (SDA) and Slave Select Bits (SSB). Next, the controlling CPU sends the 8-bit address 0000 0000 and a read operation (read: 1) bit. Then the 8 bits of data will be received by the controlling CPU. Finally, the controlling CPU issues the I2C STOP condition.

3. Advantages and Disadvantages of AT24C04B-TSU-T

AT24C04B-TSU-T has some advantages compared to other memorys, such as small power consumption, wide operating temperature range, fast access speed, programmable protection against data loss, etc.

For disadvantages, AT24C04B-TSU-T has limited storage capacity. Its storage capacity is usually only 4kbits, which cannot meet some large-scale data storage requirements. Moreover, its write speed is quite low, and its high cost hinders its wide application.

4. Conclusion

AT24C04B-TSU-T is a 4KBit serial EEPROM with an I2C interface, used in various digital fields. It has small power consumption, wide operating temperature range, fast access speed, programmable protection against data loss, etc. However, its disadvantage is the limited storage capacity and the high cost.

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