name: HT6P20C function: 2**24 OTP Encoder package: DIP/NSOP16,16 manufacturer: Holtek +--()--+ D1 | 1 16| D0 NC | 2 15| PGMB NC | 3 14| SIO VSS | 4 13| VPP NC | 5 12| VDD NC | 6 11| DOUT NC | 7 10| OSC1 NC | 8 9| OSC2 +------+ This pinout came from the Chipdir: http://www.chipdir.org/