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M41ST84W датащи(PDF) 28 Page - STMicroelectronics

номер детали M41ST84W
подробное описание детали  3.0/3.3 V I2C serial RTC with 44 bytes of NVRAM and supervisory functions
PDF  34 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41ST84W датащи(HTML) 28 Page - STMicroelectronics

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DC and AC parameters
M41ST84W
28/34
5
DC and AC parameters
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 10.
DC and AC measurement conditions
Note:
Output Hi-Z is defined as the point where data is no longer driven.
Figure 17.
AC testing input/output waveforms
Note:
50 pF for M41ST84W.
Table 11.
Capacitance
Parameter
M41ST84W
VCC supply voltage
2.7 to 3.6 V
Ambient operating temperature
–40 to 85°C
Load capacitance (CL)
50 pF
Input rise and fall times
≤ 50 ns
Input pulse voltages
0.2 to 0.8VCC
Input and output timing ref. voltages
0.3 to 0.7VCC
AI02568
0.8VCC
0.2VCC
0.7VCC
0.3VCC
Symbol
Parameter(1)(2)
1.
Effective capacitance measured with power supply at 3 V. Sampled only, not 100% tested.
2.
At 25°C, f = 1 MHz.
Min
Max
Unit
CIN
Input capacitance
7
pF
CIO
(3)
3.
Outputs deselected.
Input / output capacitance
10
pF
tLP
Low-pass filter input time constant (SDA and SCL)
50
ns



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