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M41T81SM6FT Datasheet(PDF) 5 Page - STMicroelectronics

Part # M41T81SM6FT
Description  Serial Access Real-Time Clock with Alarms
PDF  29 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T81SM6FT Datasheet(HTML) 5 Page - STMicroelectronics

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M41T81S
Figure 3. 8-pin SOIC (M) Connections
Note: 1. Open Drain Output
Figure 4. 18-pin, 300mil SOIC (MY)
Connections
Note: 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
Figure 5. Block Diagram
Note: 1. Open Drain Output
2. Square Wave function has the highest priority on IRQ/FT/OUT/SQW output.
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
REAL TIME CLOCK
CALENDAR
RTC W/ALARM
& CALIBRATION
WATCHDOG
OSCILLATOR FAIL
CIRCUIT
SQUARE WAVE
FREQUENCY TEST
OUTPUT DRIVER
IRQ/FT/OUT/SQW
(1)
INTERNAL
POWER
SQWE
(2)
AFE
SDA
SCL
VCC
OFIE
COMPARE
I
2C
INTERFACE
32KHz
OSCILLATOR
VBAT
CRYSTAL
VSO
VPFD
AI09163
WRITE
PROTECT
FT
OUT



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