1,Plain white SLE4428 Contact IC card 2, ... mm ***Chips available:Sle4428 (memory 1k, eeprom size is 1, 024 bytes). Sle4442 (eeprom size is 256 bytes), etc ... purposes-transport, municipal and ancillary service payment, etc.About MF 1 IC S50:- IC manufacturer: NXP founded by Philips- Wafer ... die: MF 1 IC S50- Function: Read/Write protect by password- Memory ...