Item_name: ['M48T18-150PC1, Real Time Clock Parallel 8Kbyte Clock/Calendar/NV Timekeeping RAM/Battery Backup 28-Pin PCDIP Tube', 'ST MICROELECTRONICS M48T18-150PC1 IC RTC CLK/Calendar PAR 28DIP New Lot Quantity-1', 'ST MICROELECTRONICS M48T18-150PC1 M48T18 Series 64 Kb (8 K x 8) 5 V 150 ns Timekeeper SRAM