M48T02_07 Datasheet, PDF (1/24 Pages) STMicroelectronics – 5.0V, 16 Kbit (2Kb x 8) TIMEKEEPER SRAM

M48T02
M48T12
5.0V, 16 Kbit (2Kb 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
(V_PFD = Power-fail deselect voltage):
– M48T02: V_CC = 4.75 to 5.5V
4.5V ≤ V_PFD ≤ 4.75V
– M48T12: V_CC = 4.5 to 5.5V
4.2V ≤ V_PFD ≤ 4.5V
■ Self-contained battery and crystal in the
CAPHAT™ DIP package
■ Pin and function compatible with JEDEC
standard 2K x8 SRAMs
■ RoHS compliant
– Lead-free second level interconnect
24
1
PCDIP24 (PC)
battery/crystal
CAPHAT™
September 2007
Rev 6
1/24
www.st.com
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