參數(shù)資料
型號： M41T64
廠商： 意法半導(dǎo)體
英文描述： Serial Access Real-Time Clock with Alarms
中文描述： 串行訪問實時時鐘與鬧鐘
文件頁數(shù)： 26/33頁
文件大?。?/td> 670K
代理商： M41T64
M41T62/63/64/65
26/33
Table 14. DC Characteristics
Note: 1. Valid for Ambient Operating Temperature: T
A
= –40 to 85°C; V
CC
= 1.3V to 3.6V (except where noted).
2. Oscillator start-up guaranteed at 1.5V only.
3. When using battery back-up, V
CC
fall time should not exceed 10mV/μs.
Table 15. Crystal Electrical Characteristics
Note: 1. Externally supplied if using the QFN16 package. STMicroelectronics recommends the Citizen CFS-145 (1.5x5mm) and the KDS
DT-38 (3x8mm) for thru-hole, or the KDS DMX-26S (3.2x8mm) for surface-mount, tuning fork-type quartz crystals.
KDS can be contacted at
kouhou@kdsj.co.jp
or
http://www.kdsj.co.jp
.
Citizen can be contacted at
csd@citizen-america.com
or
http://www.citizencrystal.com
.
2. Load capacitors are integrated within the M41T6x. Circuit board layout considerations for the 32.768kHz crystal of minimum trace
lengths and isolation from RF generating signals should be taken into account.
3. Guaranteed by design.
Sym
Parameter
Test Condition
(1)
Min
Typ
Max
Unit
V
CC(3)
Operating Voltage
Clock
(2)
1.0
3.6
V
I
2
C bus (400kHz)
1.3
3.6
V
I
CC1
Supply Current
SCL = 400kHz
(No load)
3.6V
50
100
μA
3.0V
35
μA
2.5V
30
μA
2.0V
20
μA
I
CC2
Supply Current (standby)
SCL = 0Hz
All inputs
≥
V
CC
– 0.2V
≤
V
SS
+ 0.2V
SQW Off
3.6V
375
700
nA
3.0V @ 25°C
350
nA
2.0V @ 25°C
310
nA
V
IL
Input Low Voltage
–0.2
0.3V
CC
V
V
IH
Input High Voltage
0.7V
CC
V
CC
+0.3
V
V
OL
Output Low Voltage
V
CC
= 3.6V, I
OL
= 3.0mA
(CMOS or Open Drain)
0.4
V
V
CC
= 3.6V, I
OL
= 1.0mA
(SQW, WDO, IRQ)
0.4
V
V
OH
Output High Voltage
V
CC
= 3.6V, I
OH
= –1.0mA (Push-Pull)
2.4
V
Pull-up Supply Voltage
(Open Drain)
IRQ/OUT, IRQ/FT/OUT, WDO, SQW
(M41T64 only)
3.6
V
I
LI
Input Leakage Current
0V
≤
V
IN
≤
V
CC
±1
μ
A
I
LO
Output Leakage Current
0V
≤
V
OUT
≤
V
CC
±1
μ
A
Sym
Parameter
(1,2)
Min
Typ
Max
Units
f
O
Resonant Frequency
32.768
kHz
R
S
Series Resistance
65
(3)
k
C
L
Load Capacitance
6
pF
相關(guān)PDF資料
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