M4T28-BR12SH ST Microelectronics, M4T28-BR12SH Datasheet - Page 8

• Manufacturer Part Number: M4T28-BR12SH
• Description: TIMEKEEPER SNAPHAT Battery & Crystal
• Manufacturer: ST Microelectronics

M41ST85Y, M41ST85W
DC AND AC PARAMETERS
This section summarizes the operating and mea-
surement 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 Measure-
Table 3. DC and AC Measurement Conditions
Note: Output High Z is defined as the point where data is no longer driven.
Figure 8. AC Testing Input/Output Waveforms
Note: 50pF for M41ST85W.
Table 4. Capacitance
Note: 1. Effective capacitance measured with power supply at 5V. Sampled only, not 100% tested.
8/33
V
Ambient Operating Temperature
Load Capacitance (C
Input Rise and Fall Times
Input Pulse Voltages
Input and Output Timing Ref. Voltages
CC
0.8V CC
0.2V CC
Symbol
C
Supply Voltage
2. At 25°C, f = 1MHz.
3. Outputs are deselected.
OUT
C
t
LP
IN
(3)
Input Capacitance
Output Capacitance
Low-pass filter input time constant (SDA and SCL)
L
)
Parameter
Parameter
0.7V CC
0.3V CC
AI02568
(1,2)
ment Conditions listed in the relevant tables. De-
signers should check that the operating conditions
in their projects match the measurement condi-
tions when using the quoted parameters.
0.2 to 0.8V
0.3 to 0.7V
–40 to 85°C
M41ST85Y
4.5 to 5.5V
100pF
50ns
Min
CC
CC
Max
10
50
7
0.2 to 0.8V
0.3 to 0.7V
M41ST85W
–40 to 85°C
2.7 to 3.6V
50pF
50ns
CC
CC
Unit
pF
pF
ns