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M41ST84WMH View Datasheet(PDF) - STMicroelectronics

Part NameDescriptionManufacturer
M41ST84WMH 5.0 or 3.0V, 512 bit (64 x 8) SERIAL RTC with SUPERVISORY FUNCTIONS ST-Microelectronics
STMicroelectronics ST-Microelectronics
M41ST84WMH Datasheet PDF : 31 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
M41ST84Y
M41ST84W
5.0 or 3.0V, 512 bit (64 x 8) SERIAL RTC
with SUPERVISORY FUNCTIONS
FEATURES SUMMARY
s 5.0 OR 3.0V OPERATING VOLTAGE
s SERIAL INTERFACE SUPPORTS I2C BUS
(400 KHz)
s OPTIMIZED FOR MINIMAL INTERCONNECT
TO MCU
s 2.5 TO 5.5V OSCILLATOR OPERATING
VOLTAGE
s AUTOMATIC SWITCH-OVER and DESELECT
CIRCUITRY
s CHOICE OF POWER-FAIL DESELECT
VOLTAGES:
– M41ST84Y: VCC = 4.5 to 5.5V;
4.20V VPFD 4.50V
– M41ST84W: VCC = 2.7 to 3.6V;
2.55V VPFD 2.70V
s 1.25V REFERENCE (for PFI/PFO)
s COUNTERS FOR TENTHS/HUNDREDTHS
OF SECONDS, SECONDS, MINUTES,
HOURS, DAY, DATE, MONTH, YEAR, and
CENTURY
s 44 BYTES OF GENERAL PURPOSE RAM
s PROGRAMMABLE ALARM and INTERRUPT
FUNCTION (VALID EVEN DURING BATTERY
BACK-UP MODE)
s WATCHDOG TIMER
s MICROPROCESSOR POWER-ON RESET
s BATTERY LOW FLAG
s ULTRA-LOW BATTERY SUPPLY CURRENT
OF 500 nA (max)
s OPTIONAL PACKAGING INCLUDES A 28-
LEAD SOIC and SNAPHAT® TOP (to be
ordered separately)
s SNAPHAT PACKAGE PROVIDES DIRECT
CONNECTION FOR A SNAPHAT TOP,
WHICH CONTAINS THE BATTERY and
CRYSTAL
* Contact Local Sales Office
Figure 1. 16-pin SOIC Package
16
1
SO16 (MQ)
Figure 2. 28-pin SOIC Package*
SNAPHAT (SH)
Battery & Crystal
28
1
SOH28 (MH)
June 2003
Rev. 4.0
1/31
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