Datasheet

Description M41T81S
8/32 Doc ID 10773 Rev 7
Figure 4. Block diagram
1. Open drain output
2. Square wave function has the highest priority on IRQ
/FT/OUT/SQW output.
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
V
CC
OFIE
COMPARE
I
2
C
INTERFACE
32KHz
OSCILLATOR
V
BAT
CRYSTAL
V
SO
V
PFD
AI09163
WRITE
PROTECT
FT
OUT