M41T81SM6F STMicroelectronics, M41T81SM6F Datasheet - Page 7
![IC RTC SERIAL W/ALARM 8SOIC](/photos/1/38/13851/497-8-soic_sml.jpg)
M41T81SM6F
Manufacturer Part Number
M41T81SM6F
Description
IC RTC SERIAL W/ALARM 8SOIC
Manufacturer
STMicroelectronics
Type
Clock/Calendar/Alarmr
Datasheet
1.M41T81SM6F.pdf
(32 pages)
Specifications of M41T81SM6F
Memory Size
20B
Time Format
HH:MM:SS:hh (24 hr)
Date Format
YY-MM-DD-dd
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Function
Clock/Calendar/Alarm/Timer Interrupt
Rtc Memory Size
20 Byte
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Rtc Bus Interface
Serial (I2C)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-4684-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M41T81SM6F
Manufacturer:
ST
Quantity:
20 000
M41T81S
Table 1.
1. For SO8 package only.
2. NC and NF pins should be tied to V
Figure 2.
1. Open drain output
Figure 3.
1. NC and NF pins should be tied to V
2. Open drain output
IRQ/OUT/FT/SQW
internally shorted together.
XO
NC
NF
V
SDA
SCL
XI
V
V
BAT
CC
SS
(1)
(2)
(1)
(2)
Signal names
8-pin SOIC (M) connections
18-pin, 300 mil SOIC (MY) connections
Oscillator input
Oscillator output
Interrupt / output driver / frequency test / square wave (open drain)
Serial data input/output
Serial clock input
Battery supply voltage
Supply voltage
Ground
No connect
No function
Doc ID 10773 Rev 6
NF
NF (1)
SS
SS
V
V
V
V
XO
BAT
BAT
NC
NC
NC
NC
NC
.
SS
(1)
. Pins 2 and 3 are internally shorted together. Pins 17 and 16 are
XI
SS
1
2
3
4
1
2
3
4
5
6
7
8
9
M41T81S
M41T81S
18
17
16
15
14
13
12
11
10
5
8
7
6
V
IRQ/FT/OUT/SQW
SCL
SDA
NC
NF
NF
V CC
NC
IRQ/FT/OUT/SQW
NC
SCL
SDA
CC
(1)
(1)
(1)
(2)
Description
AI09162
AI09161
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