M41T81 - Serial access real-time clock

Product Overview

ST Microelectronics

Part number	M41T81
Manufacturer	STMicroelectronics
File Size	583.32 KB
Description	Serial access real-time clock
Datasheet	M41T81 Datasheet
Additional preview pages of the M41T81 datasheet.

The M41T81 is a low-power serial RTC with a built-in 32.768 kHz oscillator (external crystal controlled).

For all new designs use M41T81S.
Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century.
32 KHz crystal oscillator integrating load capacitance (12.5 pF) providing exceptional oscillator stability and high crystal series resistance operation.
Serial interface supports I2C bus (400 kHz protocol).
Ultra-low battery supply current of 0.6 ΜA (typ at 3 V).
2.0 to 5.5 V clock operating voltage.
Automatic switchover an.

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Published: Apr 29, 2005 |