m41t81 STMicroelectronics, m41t81 Datasheet - Page 7

• Manufacturer Part Number: m41t81
• Description: Serial Access Real-time Clock With Alarms
• Manufacturer: STMicroelectronics

M41T81
Figure 3.
1. Open drain output
2. Square Wave function has the highest priority on IRQ/FT/OUT/SQW output.
3. V
CRYSTAL
SO
= V
V
SDA
SCL
BAT
CC
Block diagram
– 0.5V (typ)
V
BAT
V
SO
(3)
OSCILLATOR
INTERFACE
COMPARE
32KHz
I
2
C
PROTECT
WRITE
FREQUENCY TEST
REAL TIME CLOCK
OUTPUT DRIVER
& CALIBRATION
SQUARE WAVE
RTC W/ALARM
WATCHDOG
CALENDAR
INTERNAL
POWER
AFE
SQWE
FT
OUT
Summary description
IRQ/FT/OUT/SQW
AI04616
(1,2)
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