M41T50 Ver la hoja de datos (PDF) - STMicroelectronics

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M41T50

Serial Access Digital Input Real-Time Clock with Alarms

STMicroelectronics 

M41T50

DC AND AC PARAMETERS

This section summarizes the operating and mea-

surement conditions, as well as the DC and AC

characteristics of the device. The parameters in

the following DC and AC Characteristic tables are

derived from tests performed under the Measure-

ment Conditions listed in the relevant tables. De-

signers should check that the operating conditions

in their projects match the measurement condi-

tions when using the quoted parameters.

Table 7. Operating and AC Measurement Conditions

Parameter

Supply Voltage (VCC)

Ambient Operating Temperature (TA)

Load Capacitance (CL)

Input Rise and Fall Times

Input Pulse Voltages

Input and Output Timing Ref. Voltages

Note: 1. 0.2VCC to 0.9VCC for CLKIN input (pin 16)

Figure 12. AC Measurement I/O Waveform

M41T50

1.7V to 3.6V

–40 to 85°C

50pF

≤ 5ns

0.2VCC to 0.8 VCC(1)

0.3VCC to 0.7 VCC

0.8VCC

0.2VCC

0.7VCC

0.3VCC

AI02568

Table 8. Capacitance

Symbol

Parameter(1,2)

CIN

Input Capacitance

COUT(3)

Output Capacitance

tLP

Low-pass filter input time constant (SDA and SCL)

Note: 1. Effective capacitance measured with power supply at 3.6V; sampled only, not 100% tested.

2. At 25°C, f = 1MHz.

3. Outputs deselected.

Min Max Unit

7

pF

10

pF

50

ns

16/23

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