參數(shù)資料
型號(hào)： M41T64
廠商： 意法半導(dǎo)體
英文描述： Serial Access Real-Time Clock with Alarms
中文描述： 串行訪問(wèn)實(shí)時(shí)時(shí)鐘與鬧鐘
文件頁(yè)數(shù)： 25/33頁(yè)
文件大小： 670K
代理商： M41T64
25/33
M41T62/63/64/65
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-
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.
Table 12. Operating and AC Measurement Conditions
Note: Output Hi-Z is defined as the point where data is no longer driven.
Figure 25. AC Measurement I/O Waveform
Figure 26. Crystal Isolation Example
Note: Substrate pad should be tied to V
SS
.
Table 13. Capacitance
Note: 1. Effective capacitance measured with power supply at 3.6V; sampled only, not 100% tested.
2. At 25°C, f = 1MHz.
3. Outputs deselected.
Parameter
M41T6x
Supply Voltage (V
CC
)
1.3V to 3.6V
Ambient Operating Temperature (T
A
)
–40 to 85°C
Load Capacitance (C
L
)
50pF
Input Rise and Fall Times
≤
5ns
Input Pulse Voltages
0.2V
CC
to 0.8 V
CC
Input and Output Timing Ref. Voltages
0.3V
CC
to 0.7 V
CC
AI02568
0.8VCC
0.2VCC
0.7VCC
0.3VCC
AI09127
Crystal
XI
XO
GND
Local Grounding Plane
(Layer 2)
Symbol
Parameter
(1,2)
Min
Max
Unit
C
IN
Input Capacitance
7
pF
C
OUT(3)
Output Capacitance
10
pF
t
LP
Low-pass filter input time constant (SDA and SCL)
50
ns
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