M41T81SM6F STMicroelectronics, M41T81SM6F Datasheet - Page 8
![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
Description
Figure 4.
1. Open drain output
2. Square wave function has the highest priority on IRQ/FT/OUT/SQW output.
8/32
CRYSTAL
V
SDA
SCL
CC
Block diagram
V
BAT
V
V
PFD
SO
OSCILLATOR
INTERFACE
COMPARE
32KHz
I
2
C
PROTECT
WRITE
Doc ID 10773 Rev 6
FREQUENCY TEST
REAL TIME CLOCK
OSCILLATOR FAIL
OUTPUT DRIVER
& CALIBRATION
SQUARE WAVE
RTC W/ALARM
WATCHDOG
CALENDAR
CIRCUIT
INTERNAL
POWER
OFIE
AFE
SQWE
FT
OUT
(2)
IRQ/FT/OUT/SQW
M41T81S
AI09163
(1)