24LC32AFT-E/MS

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Memory - 24LC32AFT-E/MS application field and working principle

The 24LC32AFT-E/MS is part of the 24-series 32-Kbit memory products offered by Microchip Technology Inc. This product is a 32 Kbit 2-wire Serial EEPROM Memory product. The bus system for this product builds upon the patented 2-wire Microchip Serial EEPROM Protocol available, providing users with the necessary support for all required operations of a serial EEPROM.

Product Overview:

The 24LC32AFT-E/MS is a 32K-bit Serial EEPROM with a two-wire interface. It is organized as 4,096 bytes of 8-bit data. The 24LC32AFT-E/MS can be addressed as a single device or as a multi-device by a common two-wire bus system. The device is organized as a single block of 4,096 bytes. The device can be programmed and read with the two–wire interface protocol. The device requires a power supply voltage of 1.8V to 5.5V

Features:

• 32Kbit memory space in a single block
• 2-wire serial interface protocol
• Low-voltage Paged Read
• Enhanced write protection with hardware logic
• Optional read pointer writes after each byte read
• Separate device reset and chip select pin
• Up to 8 read/write devices in Multi-Device
• Wide supply voltage range of 1.8V to 5.5V
• Supply current- 0.35mA idling, 3mA active
• 15-year data retention

Application of 24LC32AFT-E/MS:

The 24LC32AFT-E/MS is an invaluable memory device for a variety of applications. It can be used for storing specific parameters for firmware/software configurations, display data for user interfaces, calibration data for waveform generator or sensors and many other applications. Additionally, the device can be used for interrupt and ad-hoc network configuration and to store user settings on any piece of embedded equipment.

Working Principle of 24LC32AFT-E/MS:

The 24LC32AFT-E/MS uses a two-wire serial interface protocol to communicate between the master/host and the EEPROM. The two-wire serial interface protocol consists of a serial clock line (SCL) and a serial data line (SDA). The SCL line is always driven by the master, while the SDA line is driven by the master or the slave, depending on the type of transmission (write or read). The data transmitted is in 8-bit increments, and is stored in the EEPROM memory. Writing and reading data from the EEPROM is achieved by sending 2-byte addresses along with the data. The EEPROM also supports separate chip select and device reset pins.

The 24LC32AFT-E/MS comes with an enhanced write protection feature. This feature puts the device state into a low power mode when no write command is issued to the device. Additionally, the write protection feature guarantees that any writes to the EEPROM registers can only be done with the 2-wire serial write commands. The enhanced write protection and low voltage paging read modes provide for increased robustness, reliability, and data protection capabilities.

Conclusion:

The 24LC32AFT-E/MS is an ideal memory solution for applications that require low power operation and data storage in the form of a 2-wire serial EEPROM. The device is organized as a single block of 4,096 bytes and requires a supply voltage of 1.8V to 5.5V. The 24LC32AFT-E/MS offers the user enhanced write protection and a wide array of features such as a separate chip select and device reset pins, up to 8 multi-device writes, low voltage paging reads and 15-year data retention.

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