M41ST84W_08 STMICROELECTRONICS [STMicroelectronics], M41ST84W_08 Datasheet - Page 28

• Manufacturer Part Number: M41ST84W_08
• Description: 3.0/3.3 V I2C serial RTC with 44 bytes of NVRAM and supervisory functions
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

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