M41T81S View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'M41T81S' PDF : 29 Pages View PDF
M41T81S
Summary description
Table 1. Signal names
XI(1)
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
VCC
VSS
NC(2)
NF(2)
Battery Supply Voltage
Supply Voltage
Ground
No Connect
No Function
1. For SO8 package only.
2. NC and NF pins should be tied to VSS.
Figure 2. 8-pin SOIC (M) connections
XI
XO
VBAT
VSS
1
8
2
7
3 M41T81S 6
4
5
VCC
IRQ/FT/OUT/SQW(1)
SCL
SDA
AI09161
1. Open drain output
Figure 3. 18-pin, 300mil SOIC (MY) connections
NC
NF(1)
NF(1)
NC
NC
NC
NC
VBAT
VSS
1
18
2
17
3
16
4
15
5 M41T81S 14
6
13
7
12
8
11
9
10
NC
NF(1)
NF(1)
VCC
NC
IRQ/FT/OUT/SQW(2)
NC
SCL
SDA
AI09162
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
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