M4T32-BR12SHX STMICROELECTRONICS [STMicroelectronics], M4T32-BR12SHX Datasheet - Page 30

• Manufacturer Part Number: M4T32-BR12SHX
• Description: Serial real-time clock with 44 bytes NVRAM and reset
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

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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 11.
1. Output Hi-Z is defined as the point where data is no longer driven.
Figure 16. AC testing input/output waveforms
Table 12.
1. Effective capacitance measured with power supply at 5V; sampled only, not 100% tested.
2. At 25°C, f = 1MHz.
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
supply voltage
C
t
LP
IN
(3)
DC and AC measurement conditions
Capacitance
Input capacitance
Output capacitance
Low-pass filter input time constant (SDA and SCL)
L
)
0.8V CC
0.2V CC
Parameter
Parameter
(1)(2)
(1)
0.7V CC
0.3V CC
AI02568
Min
0.2 to 0.8V
0.3 to 0.7V
–40 to 85°C
2.7 to 5.5V
M41T94
100pF
Max
50ns
10
50
7
CC
CC
Unit
pF
pF
ns