M41T60 datasheet(4/23 Pages) STMICROELECTRONICS

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M41T60

4/23

SUMMARY DESCRIPTION

The M41T60 Serial Access TIMEKEEPER® is a

low power Serial RTC with a built-in 32.768kHz os-

cillator (external crystal controlled). Eight registers

are used for the clock/calendar function and are

configured in binary coded decimal (BCD) format.

Addresses and data are transferred serially via a

two-line bi-directional bus. The built-in address

WRITE or READ data byte.

The eight clock address locations contain the cen-

tury, year, month, date, day, hour, minute, and

second; in 24-hour BCD format. Corrections for

28-, 29- (leap year), 30-, and 31-day months are

made automatically.

The M41T60 is supplied in 16-lead QFN package.

Figure 4. Logic Diagram

Note: 1. Open Drain

Table 1. Signal Names

AI08869

VCC

M41T60

VSS

SCL

SDA

FT(1)

OFIRQ/OUT(1)

Oscillator Input

Oscillator Output

Frequency Test Output (Open

Drain)

SDA

Serial Data Address Input /

Output

SCL

Serial Clock

OFIRQ/OUT

Oscillator Fail Interrupt/OUT

Output (Open Drain)

VCC

Supply Voltage

VSS

Ground

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