M41T0(2008) データシートの表示（PDF） - STMicroelectronics

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M41T0
(Rev.:2008)

Serial real-time clock

STMicroelectronics 

DC and AC parameters

5

DC and AC parameters

M41T0

This section summarizes the operating and measurement 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 Measurement Conditions listed in the

relevant tables. Designers should check that the operating conditions in their projects match

the measurement conditions when using the quoted parameters.

Table 5. Operating and AC measurement conditions(1)

Parameter

M41T0

Unit

Supply voltage (VCC)

Ambient operating temperature (TA)

Load capacitance (CL)

Input rise and fall times

2.0 to 5.5

V

–40 to 85

°C

100

pF

≤5

ns

Input pulse voltages

Input and output timing ref. voltages

0.2VCC to 0.8VCC

V

0.3VCC to 0.7VCC

V

1. Output Hi-Z is defined as the point where data is no longer driven.

Figure 11. AC testing input/output waveform

0.8VCC

0.2VCC

0.7VCC

0.3VCC

AI02568

Table 6. Capacitance

Symbol

Parameter(1)(2)

Min

Max

CIN

Input capacitance (SCL)

7

COUT(3) Output capacitance (SDA, OUT)

10

tLP

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

50

1. Effective capacitance measured with power supply at 5V; sampled only, not 100% tested

2. At 25°C, f = 1 MHz.

3. Outputs deselected.

Unit

pF

pF

ns

16/22

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