The Anvo-Systems Dresden ANV32A62W is a 64Kb serial SRAM with a non-volatile SONOS storage element included with each memory cell, organized as 8k words of 8 bits each. The devices are accessed by a two-wire bus. Up to 4 cascadable devices can share the common bus. The ANV32A62A is accessed via a two-wire interface consisting of Serial Data / Address (SDA) and Serial Clock (SCL). All STORE cycles are self-timed.
The serial nvSRAM provides the access and cycle times, easy to use and unlimited READ and WRITE endurance of a normal SRAM.
Data transfers automatically to the non-volatile storage cells when power loss is detected or in any brown out situation (PowerStore). As long as power will be supported all data stay volatile in the SRAM cells.
WRITE Protection of the upper quarter of the memory occurs when the Write Protect pin is connected to VCC.