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M41T81SMY6T Datasheet(PDF) 7 Page - STMicroelectronics

Part # M41T81SMY6T
Description  Serial access real-time clock with alarms
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T81SMY6T Datasheet(HTML) 7 Page - STMicroelectronics

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M41T81S
Summary description
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Table 1.
Signal names
Figure 2.
8-pin SOIC (M) connections
1.
Open drain output
Figure 3.
18-pin, 300mil SOIC (MY) connections
1.
NC and NF pins should be tied to VSS. Pins 2 and 3 are internally shorted together. Pins 17 and 16 are
internally shorted together.
2.
Open drain output
XI(1)
1.
For SO8 package only.
Oscillator Input
XO(1)
Oscillator Output
IRQ/OUT/FT/SQW
Interrupt / Output Driver / Frequency Test / Square Wave (Open Drain)
SDA
Serial Data Input/Output
SCL
Serial Clock Input
VBAT
Battery Supply Voltage
VCC
Supply Voltage
VSS
Ground
NC(2)
2.
NC and NF pins should be tied to VSS.
No Connect
NF(2)
No Function
2
3
45
6
8
7
1
IRQ/FT/OUT/SQW
(1)
SDA
VBAT
SCL
VSS
XO
XI
VCC
M41T81S
AI09161
8
2
3
4
5
6
7
9
12
11
10
18
17
16
15
14
13
1
NF
(1)
NC
NC
NC
NC
NC
NC
SCL
SDA
VSS
VBAT
NF
(1)
NC
VCC
M41T81S
IRQ/FT/OUT/SQW
(2)
NF
(1)
NF
(1)
NC
AI09162


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