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M48T201Y fiches techniques PDF

ST Microelectronics - 3.3V-5V TIMEKEEPER CONTROLLER

Numéro de référence M48T201Y
Description 3.3V-5V TIMEKEEPER CONTROLLER
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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M48T201Y fiche technique
M48T201Y
M48T201V
5.0 or 3.3 V TIMEKEEPER® supervisor
Features
Converts low power SRAM into NVRAMs
Year 2000 compliant
Battery low flag
Integrated real time clock, power-fail control
circuit, battery and crystal
Watchdog timer
Choice of write protect voltages
(VPFD = power-fail deselect voltage):
– M48T201Y: VCC = 4.5 to 5.5 V
4.1V VPFD 4.5 V
– M48T201V: VCC = 3.0 to 3.6 V
2.7 V VPFD 3.0 V
Microprocessor power-on reset (valid even
during battery backup mode)
Programmable alarm output active in the
battery backed-up mode
Packaging includes a 44-lead SOIC and
SNAPHAT® top (to be ordered separately)
SOIC package provides direct connection for a
SNAPHAT® top which contains the battery and
crystal
RoHS compliant
– Lead-free second level interconnect
SNAPHAT® (SH)
crystal/battery
44
1
SOH44 (MH)
44-pin SOIC
March 2009
Rev 7
1/37
www.st.com
1

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