■ 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

■ Typical clock accuracy of ±1 minute a month, at 25 °C

■ Automatic power-fail chip deselect and WRITE protection

■ WRITE protect VPFD = power-fail deselect voltage):

– M48T08: VCC = 4.75 to 5.5 V; 4.5 V ≤ VPFD ≤ 4.75 V – M48T18/T08Y: VCC = 4.5 to 5.5 V; 4.2 V ≤ VPFD ≤ 4.5 V

■ Software controlled clock calibration for high accuracy applications

■ 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 top which contains the battery and crystal

■ Pin and function compatible with DS1643 and JEDEC standard 8 K x 8 SRAMs

■ RoHS compliant – Lead-free second level interconnect

LINGCHENG makes your dream come true.

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