Features
■ Integrated, ultra low power SRAM, real-time
clock, and power-fail control circuit
■ 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
■ Software controlled clock calibration for high
accuracy applications
■ Automatic power-fail chip deselect and WRITE
protection
■ WRITE protect voltages
(VPFD = power-fail deselect voltage):
– M48T02: VCC = 4.75 to 5.5 V;
4.5 V ≤ VPFD ≤ 4.75 V
– M48T12: VCC = 4.5 to 5.5 V;
4.2 V ≤ VPFD ≤ 4.5 V
■ Self-contained battery and crystal in the
CAPHAT™ DIP package
■ Pin and function compatible with JEDEC
standard 2 K x 8 SRAMs
■ RoHS compliant
– Lead-free second level interconnect