8583
I2C Clock/Calendar with 240x8 static RAM.
Address is 101000x where x can be specified by the A0 input.

    +----------+
 X1 |1  +--+  8| VCC
 X0 |2        7| /INT
 A0 |3  8583  6| SCL
GND |4        5| SDA
    +----------+

[This information is part of the GIICM]