M41T65Q6F STMicroelectronics, M41T65Q6F Datasheet - Page 6

• Manufacturer Part Number: M41T65Q6F
• Description: IC RTC SERIAL W/ALARM 16QFN
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Alarmr

Specifications of M41T65Q6F

• Memory Size: 16B
• Time Format: HH:MM:SS:hh (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.3 V ~ 4.4 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QFN
• Function: Clock/Calendar/Alarm/Timer Interrupt
• Rtc Memory Size: 16 Byte
• Supply Voltage (max): 4.4 V
• Supply Voltage (min): 1.3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial (2-Wire, I2C)
• Supply Current: 50 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-3908-2

Description
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Description
The M41T6x serial access TIMEKEEPER
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 I
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.
1. Open drain.
2. Defaults to 32 KHz on power-up.
Figure 2.
1. Open drain.
2. Defaults to 32 KHz on power-up.
M41T62 logic diagram
M41T63 logic diagram
Doc ID 10397 Rev 14
SDA
SDA
SCL
SCL
XO
XO
XI
XI
®
M41T63
M41T62
is a low power serial RTC with a built-in
V
V
V
V
CC
SS
SS
CC
2
C interface. The built-in address
WDO
SQW
SQW
IRQ/OUT
(1)
(2)
(2)
(1)
M41T62/63/64/65
AI09103
AI09189