M41ST87WMX6F STMICROELECTRONICS [STMicroelectronics], M41ST87WMX6F Datasheet - Page 43

• Manufacturer Part Number: M41ST87WMX6F
• Description: 5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M41ST87Y, M41ST87W
5
Note:
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 15.
Output high Z is defined as the point where data is no longer driven.
Figure 27. AC testing input/output waveforms
Table 16.
1. Effective capacitance measured with power supply at 5 V. Sampled only, not 100% tested.
2. At 25 °C, f = 1 MHz.
3. Outputs are deselected.
V
Ambient operating temperature
Load capacitance (C
Input rise and fall times
Input pulse voltages
Input and output timing ref. voltages
CC
Symbol
C
OUT
C
t
supply voltage
LP
IN
(3)
Input capacitance
Output capacitance
Low-pass filter input time constant (SDA and SCL)
DC and AC measurement conditions
Capacitance
L
)
0.8V CC
0.2V CC
Parameter
Parameter
Doc ID 9497 Rev 8
(1)(2)
0.7V CC
0.3V CC
AI02568
Min
0.2 to 0.8V
0.3 to 0.7V
–40 to 85 °C
4.5 to 5.5 V
M41ST87Y
≤ 50 ns
100 pF
DC and AC parameters
CC
CC
Max
50
10
7
0.2 to 0.8V
0.3 to 0.7V
–40 to 85 °C
M41ST87W
2.7 to 3.6 V
≤ 50 ns
50 pF
Unit
pF
pF
ns
43/52
CC
CC