19-5501; Rev 9/10 www.maxim-ic.com DS1557 4Meg, .
Dallas Semiconducotr
DS1557 - 4MEG NV Y2KC Timekeeping RAM
19-5501; Rev 9/10 www.maxim-ic.com DS1557 4Meg, Nonvolatile, Y2K-Compliant Timekeeping RAM FEATURES Integrated NV SRAM, Real-Time Clock (RTC), Cr.