M41T81M6F STMicroelectronics, M41T81M6F Datasheet - Page 6

• Manufacturer Part Number: M41T81M6F
• Description: IC RTC SERIAL W/ALARM 8-SOIC
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Alarmr

Specifications of M41T81M6F

• 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 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-4709-2

Description
Figure 2.
Figure 3.
1. Open drain output
2. Square wave function has the highest priority on IRQ/FT/OUT/SQW output.
3. V
6/29
CRYSTAL
SO
= V
V
SDA
SCL
BAT
CC
8-pin SOIC (M) connections
Block diagram
– 0.5 V (typ)
V
BAT
V
SO
(3)
OSCILLATOR
INTERFACE
COMPARE
32KHz
I
2
C
PROTECT
WRITE
V
V
XO
BAT
SS
XI
Doc ID 7529 Rev 10
1
2
3
4
M41T81
FREQUENCY TEST
REAL TIME CLOCK
OUTPUT DRIVER
& CALIBRATION
SQUARE WAVE
RTC W/ALARM
WATCHDOG
CALENDAR
5
8
7
6
V
IRQ/FT/OUT/SQW
SCL
SDA
CC
INTERNAL
POWER
AFE
SQWE
FT
OUT
IRQ/FT/OUT/SQW
AI04769
AI04616
M41T81
(1,2)