M41T00 데이터 시트보기 (PDF) - STMicroelectronics

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M41T00

Serial real-time clock

STMicroelectronics 

M41T00

Figure 13. Clock calibration

NORMAL

POSITIVE

CALIBRATION

NEGATIVE

CALIBRATION

M41T00 clock operation

AI00594B

3.2

Note:

3.3

Output driver pin

When the FT bit is not set, the FT/OUT pin becomes an output driver that reflects the

contents of D7 of the control register. In other words, when D6 of address 7 is a zero and D7

of address 7 is a zero and then the FT/OUT pin will be driven low.

The FT/OUT pin is open drain which requires an external pull-up resistor.

Initial power-on defaults

Upon initial application of power to the device, the FT bit will be set to a '0' and the OUT bit

will be set to a '1'. All other register bits will initially power on in a random state.

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