M48T201Y
M48T201V
5.0 or 3.3V TIMEKEEPER® supervisor
Features
â– Converts low power SRAM into NVRAMs
â– Year 2000 compliant
â– Battery low flag
â– Integrated real time clock, power-fail control
circuit, battery and crystal
â– Watchdog timer
â– Choice of write protect voltages
(VPFD = Power-fail Deselect Voltage):
– M48T201Y: VCC = 4.5 to 5.5V
4.1V ≤ VPFD ≤ 4.5V
– M48T201V: VCC = 3.0 to 3.6V
2.7V ≤ VPFD ≤ 3.0V
â– Microprocessor power-on reset (valid even
during battery back-up mode.)
â– Programmable alarm output active in the
battery backed-up mode
â– Packaging includes a 44-lead SOIC and
SNAPHAT® top (to be ordered separately)
â– SOIC package provides direct connection for a
SNAPHAT® top which contains the battery and
crystal
â– RoHS compliant
– Lead-free second level interconnect
SNAPHAT (SH)
Crystal/Battery
44
1
SOH44 (MH)
44-pin SOIC
September 2007
Rev 5
1/35
www.st.com
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