Microchip SRAM, 47L64-I/SN- 64kbit

The Microchip EERAM is an SRAM that doesnt lose its content on a power disruption. Inside each memory cell, transparent to the user, are non-volatile transistors that capture the SRAM content and hold it through power loss events. On power restore, the SRAM is reloaded with its last content and SRAM operation can continue.8,192 x 8 bit Serial SRAM with internal non-volatile data backup I2C Interface: Up to 3MHz with Schmitt trigger inputs for noise suppression Low-Power CMOS Technology: Active current: 5 mA (maximum) Standby current: 500 μA (maximum) Hibernate current: 3 μA (maximum) Cell-Based Non-volatile Backup mirrors SRAM array cell-for-cell and transfers all data to/from SRAM cells in parallel (all cells at same time) Invisible-to-User Data Transfers: VCC level monitored inside device, SRAM automatically saved on power disrupt, SRAM automatically restored on VCC return 100,000 Backups Minimum (at 20°C) 100 years retention (at 20°C)