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ST Microelectronics - SERIAL ACCESS RTC WITH ALARMS

Numéro de référence M41T80M
Description SERIAL ACCESS RTC WITH ALARMS
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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M41T80M fiche technique
M41T80
SERIAL ACCESS RTC WITH ALARMS
FEATURES SUMMARY
s 2.0 TO 5.5V CLOCK OPERATING VOLTAGE
s COUNTERS FOR TENTHS/HUNDREDTHS
OF SECONDS, SECONDS, MINUTES,
HOURS, DAY, DATE, MONTH, YEAR, and
CENTURY
s SERIAL INTERFACE SUPPORTS I2C BUS
(400KHz)
s PROGRAMMABLE ALARM and INTERRUPT
FUNCTION
s LOW OPERATING CURRENT OF 200µA
s OPERATING TEMPERATURE OF –40 TO
85°C
Figure 1. Logic Diagram
VCC
XI
XO
SCL
SDA
M41T80
IRQ/OUT/SQW
F32k
VSS
AI07005
Figure 2. 8-pin SOIC Package
8
1
SO8 (M)
Table 1. Signal Names
XI Oscillator Input
XO Oscillator Output
IRQ/OUT/
SQW
Interrupt / Output Driver / Square
Wave (Open Drain)
SDA
Serial Data Input/Output
SCL
Serial Clock Input
F32k
32kHz Square Wave Output (Open
drain)
VCC Supply Voltage
VSS Ground
October 2002
1/20

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