Atmel Corporation Memory AT24C1024BU4-UU-T

The AT24C1024BU4-UU-T is a 1Mbit EEPROM memory device from Quarktwin Technology Ltd., organized as 131,072 words of 8 bits each. It operates at low voltages, with a range of 1.8V to 3.6V or 2.5V to 5.5V, making it suitable for low-power applications. The device features a two-wire serial interface with a maximum clock rate of 400 kHz at 1.8V and 1 MHz at higher voltages. It supports both random and sequential read modes, as well as a 256-byte page write mode, allowing for partial page writes. The write protect pin provides hardware and software data protection, while the self-timed write cycle typically takes 5 ms. The memory has a high endurance of 1,000,000 write cycles per page and a data retention period of up to 40 years. The AT24C1024BU4-UU-T is available in various package types, including 8-lead PDIP, SOIC, TSSOP, and dBGA2, accommodating different design requirements. However, it is noted that this part is not recommended for new designs and has been replaced by the AT24CM01.