M48T58

M48T58 M48T58Y 5.0 V, 64 Kbit (8 Kb x 8) TIMEKEEPER® SRAM Features ■ Integrated, ultra low power SRAM, real-time clock, power-fail control circuit and battery ■ BYTEWIDE™ RAM-like clock access ■ BCD coded year, month, day, date, hours, minutes, and seconds ■ Frequency test output for real-time clock ■ Automatic power-fail chip deselect and WRITE protection ■ WRITE protect voltages (VPFD = power-fail deselect voltage): – M48T58: VCC = 4.75 to 5.5 V; 4.5 V ≤ VPFD ≤ 4.75 V – M48T58Y: VCC = 4.5 to 5.5 V; 4.2 V ≤ VPFD ≤ 4.5 V ■ Self-contained battery and crystal in the CAPHAT™ DIP package ■ Packaging includes a 28-lead SOIC and SNAPHAT® top (to be ordered separately) ■ SOIC package provides direct connection for a snaphat housing containing the battery and crystal ■ Pin and function compatible with JEDEC standard 8 Kb x 8 SRAMs ■ RoHS compliant – Lead-free second level interconnect 28 1 PCDIP28 Battery/crystal CAPHAT™ SNAPHAT® Battery/crystal 2...