Datasheet

Figure 7. M41T62 block diagram
REAL TIME CLOCK
CALENDAR
RTC W/ALARM
OSCILLATOR FAIL
DETECT
SQUARE WAVE
WATCHDOG
IRQ/OUT
(1)
SQW
(2)
OFIE
SDA
SCL
AFE
SQWE
I²C
INTERFACE
32 kHz
OSCILLATOR
XTAL
(3)
(3)
1. Open drain.
2. Defaults to 32 kHz on power-up.
3. Not bonded on embedded crystal (LCC) package.
Figure 8. M41T64 block diagram
REAL TIME CLOCK
CALENDAR
RTC W/ALARM
OSCILLATOR FAIL
DETECT
SQUARE WAVE
WATCHDOG
SQW
(2)
F
32K
(1)
32KE
SDA
SCL
SQWE
I²C
INTERFACE
32 kHz
OSCILLATOR
XTAL
1. Defaults enabled on power-up.
2. Open drain.
Figure 9. M41T65 block diagram
REAL TIME CLOCK
CALENDAR
RTC W/ALARM
OSCILLATOR FAIL
DETECT
WATCHDOG
IRQ/FT/OUT
(1)
WDO
(1)
OFIE
SDA
SCL
FT
AFE
I²C
INTERFACE
32 kHz
OSCILLATOR
XTAL
1. Open drain.
M41T62, M41T64, M41T65
Description
DS3840 - Rev 24
page 5/42