參數(shù)資料
型號(hào): DS1387
英文描述: RAMified Real Time Clock 4K x 8
中文描述: 網(wǎng)狀實(shí)時(shí)時(shí)鐘4K的× 8
文件頁數(shù): 16/20頁
文件大?。?/td> 142K
代理商: DS1387
DS1385/DS1387
012496 16/20
POWER–DOWN CONDITION
ééééé
ééééé
ééééé
V
IH
t
PF
t
F
t
DR
t
FB
V
BAT
4.5V
4.25V
4.0V
POWER FAIL
CE
V
CC
POWER–UP POWER–DOWN TIMING
(t
A
= 25
°
C)
NOTES
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
CE High to Power Fail
t
PF
0
ns
Recovery at Power Up
t
REC
150
ms
V
CC
Slew Rate Power Down
t
F
4.0 <V
CC
< 4.5V
300
μ
s
V
CC
Slew Rate Power Down
t
FB
3.0 <V
CC
< 4.0V
10
μ
s
V
CC
Slew Rate Power Up
t
R
4.5V>V
CC
>4.0V
0
μ
s
Expected Data Retention
t
DR
10
years
8
WARNING:
Under no circumstances are negative undershoots, of any amplitude, allowed when device is in battery back–up
mode.
CAPACITANCE
(t
A
= 25
°
C)
NOTES
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Input Capacitance
C
IN
12
pF
Output Capacitance
C
OUT
12
pF
相關(guān)PDF資料
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DS2415P 1-Wire Time Chip
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