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M41T65Q6F View Datasheet(PDF) - STMicroelectronics

Part Name
Description
Manufacturer
M41T65Q6F
ST-Microelectronics
STMicroelectronics ST-Microelectronics
M41T65Q6F Datasheet PDF : 41 Pages
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Description
1
Description
M41T62/63/64/65
The M41T6x serial access TIMEKEEPER® is a low power serial RTC with a built-in
32.768 kHz oscillator. Eight registers are used for the clock/calendar function and are
configured in binary coded decimal (BCD) format. An additional 8 registers provide
status/control of alarm, 32 KHz output, calibration, and watchdog functions. Addresses and
data are transferred serially via a two line, bi-directional I2C interface. The built-in address
register is incremented automatically after each WRITE or READ data byte.
Functions available to the user include a time-of-day clock/calendar, alarm interrupts
(M41T62/65), 32 KHz output (M41T62/63/64), programmable square wave output
(M41T62/63/64), and watchdog output (M41T63/65). The eight clock address locations
contain the century, year, month, date, day, hour, minute, second and tenths/hundredths of a
second in 24 hour BCD format. Corrections for 28-, 29- (leap year), 30- and 31-day months
are made automatically.
The M41T6x is supplied in a tiny, 3 mm x 3 mm 16-pin QFN which requires a user-supplied
32 KHz crystal.
Figure 1. M41T62 logic diagram
VCC
XI
XO
SCL
SDA
M41T62
IRQ/OUT(1)
SQW(2)
VSS
1. Open drain.
2. Defaults to 32 KHz on power-up.
Figure 2. M41T63 logic diagram
VCC
AI09103
XI
XO
SCL
SDA
M41T63
WDO(1)
SQW(2)
6/41
VSS
1. Open drain.
2. Defaults to 32 KHz on power-up.
Doc ID 10397 Rev 14
AI09189
 

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