IC: pamięć SRAM; 16K (2048 x 8 bit); access 150ns; cycle 150ns; Iccmax 60mA active / standby 15mA; Vcc 5V TTL; DIP24; NEC uPD4016 16384bit NMOS Static Random Access Memory Datasheet: datasheet4u.com/pdf-down/U/P/D/UPD4016NEC.pdf