name:         HT1380
function:     Serial Timekeeper Chip
package:      DIP8,8
manufacturer: Holtek

    +--()--+
 NC | 1   8| VDD
 X1 | 2   7| SCLK
 X2 | 3   6| I/O
VSS | 4   5| RESTB
    +------+


This pinout came from the Chipdir:
http://www.chipdir.org/