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M41T80M Datasheet(PDF) 1 Page - STMicroelectronics

Part # M41T80M
Description  SERIAL ACCESS RTC WITH ALARMS
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T80M Datasheet(HTML) 1 Page - STMicroelectronics

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October 2002
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
Figure 2. 8-pin SOIC Package
Table 1. Signal Names
SCL
VCC
M41T80
VSS
SDA
F32k
IRQ/OUT/SQW
XI
XO
AI07005
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
8
1
SO8 (M)


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