Datasheet

Description M41T81
6/29 Doc ID 7529 Rev 10
Figure 2. 8-pin SOIC (M) connections
Figure 3. Block diagram
1. Open drain output
2. Square wave function has the highest priority on IRQ
/FT/OUT/SQW output.
3. V
SO
= V
BAT
– 0.5 V (typ)
2
3
45
6
8
7
1
IRQ/FT/OUT/SQW
SDA
V
BAT
SCL
V
SS
XO
XI
V
CC
M41T81
AI04769
AI04616
REAL TIME CLOCK
CALENDAR
RTC W/ALARM
& CALIBRATION
WATCHDOG
SQUARE WAVE
FREQUENCY TEST
OUTPUT DRIVER
IRQ/FT/OUT/SQW
(1,2)
INTERNAL
POWER
SQWE
AFE
SDA
SCL
V
CC
COMPARE
I
2
C
INTERFACE
32KHz
OSCILLATOR
V
BAT
CRYSTAL
V
SO
(3)
WRITE
PROTECT
FT
OUT