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參數(shù)資料
| 型號： | DS1215 |
| 英文描述： | Phantom Time Chip |
| 中文描述： | 幻影時鐘芯片 |
| 文件頁數(shù)： | 8/15頁 |
| 文件大?。?/td> | 113K |
| 代理商： | DS1215 |
DS1215
032697 8/15
AC ELECTRICAL CHARACTERISTICS ROM/RAM = GND
(0
°
C to 70
°
C; V
CC
= 4.5 to 5.5V)
MAX
UNITS
PARAMETER
SYMBOL
MIN
TYP
NOTES
Read Cycle Time
t
RC
120
ns
CEI Access Time
t
CO
100
ns
OE Access Time
t
OE
100
ns
CEI to Output Low Z
t
COE
10
ns
OE to Output Low Z
t
OEE
10
ns
CEI to Output High Z
t
OD
40
ns
OE to Output High Z
t
ODO
40
ns
Read Recovery
t
RR
20
ns
Write Cycle
t
WC
120
ns
Write Pulse Width
t
WP
100
ns
Write Recovery
t
WR
20
ns
4
Data Setup
t
DS
40
ns
5
Data Hold Time
t
DH
10
ns
5
CEI Pulse Width
t
CW
100
ns
RST Pulse Width
t
RST
200
ns
CEI Propagation Delay
t
PD
5
10
20
ns
2, 3
CEI High to Power–Fail
t
PF
0
ns
AC ELECTRICAL CHARACTERISTICS ROM/RAM = GND
(0
°
C to 70
°
C; V
CC
> 4.5V)
MAX
UNITS
PARAMETER
SYMBOL
MIN
TYP
NOTES
Recovery at Power–Up
t
REC
2
ms
V
CC
Slew Rate 4.5 – 3.0V
t
F
0
ms
CAPACITANCE
(t
A
= 25
°
C)
NOTES
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Input Capacitance
C
IN
5
10
pF
Output Capacitance
C
OUT
5
10
pF
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