name: HT813D0 function: 5.6 Second LOG-PCM Speech package: DIP/SOP16,16 manufacturer: Holtek +--()--+ OSC1 | 1 16| OSC2 FLAG1 | 2 15| AUD VSS | 3 14| VDD FLAG2 | 4 13| NC KEY1 | 5 12| KEY8 KEY2 | 6 11| KEY7 KEY3 | 7 10| KEY6 KEY4 | 8 9| KEY5 +------+ This pinout came from the Chipdir: http://www.chipdir.org/