m41t66 STMicroelectronics, m41t66 Datasheet
m41t66
Manufacturer Part Number
m41t66
Description
Real-time Clocks
Manufacturer
STMicroelectronics
Datasheet
1.M41T66.pdf
(33 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
m41t66Q6F
Manufacturer:
Maxim
Quantity:
178
Part Number:
m41t66Q6F
Manufacturer:
ST
Quantity:
20 000
Features
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October 2008
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 I
525 nA timekeeping current at 3 V
Low operating current of 35 µA (at 400 kHz)
Timekeeping down to 1.0 V
1.3 V to 4.4 V I
– Allows use in lithium ion rechargeable
32 KHz square wave on power-up to drive a
microcontroller in low power mode
Programmable (1 Hz to 32 KHz) square wave
Programmable alarm with interrupt function
Accurate programmable watchdog
(from 62.5 ms to 31 min)
Software clock calibration to compensate
deviation of crystal due to temperature
Automatic leap year compensation
Operating temperature of –40 to 85°C
Lead-free 16-pin QFN package
applications
2
C bus operating voltage
2
C bus (400 kHz)
Serial access real-time clock with alarms
Rev 1
QFN16 (Q) 3 mm x 3 mm
M41T66
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