name: HT812D0 function: 2.8 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| NC KEY2 | 6 11| NC KEY3 | 7 10| NC KEY4 | 8 9| NC +------+ This pinout came from the Chipdir: http://www.chipdir.org/