com
M41T82 M41T83
Serial RTC with battery switchover
Features
■ ■ ■
2.
0 to 5.
5V clock operating
voltage Ultra-low battery supply current of 365nA Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century Programmable clock calibration (analog and digital) Automatic switchover and reset output circuitry (fixed reference) – M41T83S VCC = 3.
00V to 5.
50V (2.
85V ≤ VRST ≤ 3.
00V) – M41T83R VCC = 2.
70V to 5.
50V (2.
55V ≤ VRST ≤ 2.
70V) – M41T83Z VCC = 2.
38V to 5.
50V (2.
25V ≤ VRST ≤ 2.
38V) Serial interface supports I2C Bus (400kHz protocol) Programmable alarm with interrupt function (valid even during battery back-up mode) Optional 2nd pro...