P28F020-150 Integrated Circuit - DIP32 - Intel

F28F020-150 Integrated Circuit - SMD - Intel

P28F256A150 Integrated Circuit - DIP32 - Intel

AM28F256-150PC Integrated Circuit - DIP32 - Analog Devices - AMD

F28F010-150 Integrated Circuit - TSOP32 - Intel

AM28F010-200PC Integrated Circuit - DIP32 - Analog Devices - AMD

AM28F020-90PC Integrated Circuit - DIP32 - Analog Devices - AMD

M28F256A15B1 Integrated Circuit - DIP32 - ST Microelectronics - STM