M48T02
M48T12
5.0 V, 16 Kbit (2 Kb x 8) TIMEKEEPER® SRAM
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
24
1
PCDIP24
battery/crystal
CAPHAT™
■
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
June 2011
Doc ID 2410 Rev 9
1/25
www.st.com
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