參數(shù)資料
型號: DS17488
英文描述: 3V/5V Real-Time Clock
中文描述: 3V/5V實時時鐘
文件頁數(shù): 26/38頁
文件大?。?/td> 427K
代理商: DS17488
DS17485/DS17487
26 of 38
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Over the operating range (3V)
MAX
UNITS
SYMBOL
MIN
TYP
NOTES
Average V
CC
Power-Supply
Current
I
CC1
15
30
mA
1, 2
CMOS Standby Current
(
CS
= V
CC
- 0.2V)
I
CC2
0.5
2
mA
1, 2
Input Leakage Current
(Any Input)
I
IL
-1
+1
A
Output Leakage Current
I
OL
-1
+1
A
5
Output Logic 1 Voltage
at -0.4mA
V
OH
2.4
V
Output Logic 0 Voltage
at +0.8mA
V
OL
0.4
V
Power-Fail Trip Point
V
PF
2.5
2.6
2.7
V
3
Battery Leakage OSC ON
I
BAT1
0.50
0.7
A
11
Battery Leakage OSC OFF
I
BAT2
0.050
0.4
A
11
I/O Leakage
I
LO
-1
+1
A
4
PWR
Output at 0.4V
I
OLPWR
4
mA
IRQ
Output at 0.4V
I
OLIRQ
0.8
mA
CRYSTAL SPECIFICATIONS*
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Nominal Frequency
Series Resistance
Load Capacitance
F
O
ESR
C
L
32.768
6 or 12.5
kHz
k
pF
45
*The crystal, traces, and crystal input pins should be isolated from RF generating signals. Refer to
Application
Note 58
, “Crystal Considerations for Dallas Real-Time Clocks” for additional specification.
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