900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




STMicroelectronics Electronic Components Datasheet

M41T63 Datasheet

Serial Access Real-Time Clock

No Preview Available !

www.DataSheet4U.com
M41T62, M41T63
M41T64, M41T65
Serial Access Real-Time Clock with Alarms
Feature summary
Counters for tenths/hundredths of seconds,
seconds, minutes, hours, day, date, month,
year, and century
32 KHz crystal oscillator integrating load
capacitance and high crystal series resistance
operation
Oscillator stop detection monitors clock
operation
Serial interface supports I2C bus (400kHz)
350nA timekeeping current @ 3V
Low operating current of 35µA (@400kHz)
Timekeeping down to 1.0V
1.3V to 4.4V I2C bus operating voltage
32KHz square wave on power-up to drive a
microcontroller in low power mode
(M41T62/63/64)
Programmable (1Hz to 32KHz) square wave
(M41T63/64)
Programmable alarm with interrupt function
(M41T62/65)
Accurate programmable watchdog
(from 62.5ms to 31 min)
Software clock calibration to compensate
deviation of crystal due to temperature
Automatic leap year compensation
QFN16 (Q) 3mm x 3mm
VSOJ20 (47.6mm2)
GND Plane Guard Ring (21.5mm2)
SMT
CRYSTAL
1 XI
2 XO
3
4 ST QFN16
AI11107
32KHz crystal + QFN 16 vs. VSOJ20
Operating temperature of –40 to 85°C
Lead-free 16-pin QFN package
Lithium ion rechargeable operation
Table 1. Device options
Basic RTC Alarms
M41T62
M41T63
M41T64
M41T65
Table 1
OSC fail
detect
Watchdog
timer
Calibration
SQW
output
✔ ✔✔
✔ ✔✔
✔ ✔✔
✔✔
IRQ WDO F32K
output output output
✔✔
August 2006
Rev 11
1/41
www.st.com
1


STMicroelectronics Electronic Components Datasheet

M41T63 Datasheet

Serial Access Real-Time Clock

No Preview Available !

Contents
Contents
M41T62/63/64/65
1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1 2-wire bus characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1.1 Bus not busy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1.2 Start data transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1.3 Stop data transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1.4 Data valid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1.5 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2 READ mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3 WRITE mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3 Clock operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.1 TIMEKEEPER® registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2 Calibrating the clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.3 Setting alarm clock registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.4 Watchdog timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.5 Watchdog output (WDO - M41T63/65 only) . . . . . . . . . . . . . . . . . . . . . . . 26
3.6 Square wave output (M41T62/63/64) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.7 Full-time 32KHz square wave output (M41T64) . . . . . . . . . . . . . . . . . . . . 27
3.8 Century bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.9 Output driver pin (M41T62/65) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.10 Oscillator stop detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.11 Initial power-on defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6 Package mechanical information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
2/40


Part Number M41T63
Description Serial Access Real-Time Clock
Maker STMicroelectronics
PDF Download

M41T63 Datasheet PDF






Similar Datasheet

1 M41T60 Serial Access Real-Time Clock
ST Microelectronics
2 M41T62 Low-power serial real-time clocks
ST Microelectronics
3 M41T63 Serial Access Real-Time Clock
STMicroelectronics
4 M41T64 Low-power serial real-time clocks
ST Microelectronics
5 M41T65 Low-power serial real-time clocks
ST Microelectronics
6 M41T66 Serial real-time clock
STMicroelectronics





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy