參數(shù)資料
型號: DS1501WEN
英文描述: Y2K-Compliant Watchdog Real-Time Clocks
中文描述: 千年蟲的看門狗實(shí)時(shí)時(shí)鐘
文件頁數(shù): 4/20頁
文件大小: 265K
代理商: DS1501WEN
DS1501/DS1511 Y2KC Watchdog Real-Time Clocks
4 of 20
AC OPERATING CHARACTERISTICS
(
V
CC
= 3.3V ±10%
, T
A
= 0°C to +70°C;
V
CC
= 3.3V ±10%
, T
A
= -40°C to +85°C.)
PARAMETER
Read Cycle Time
Address Access Time
CE
to DQ Low-Z
CE
Access Time
CE
Data Off Time
OE
to DQ Low-Z (0°C to +85°C)
OE
to DQ Low-Z (-40°C to 0°C)
OE
Access Time
OE
Data-Off Time
Output Hold from Address
Write Cycle Time
Address Setup Time
WE
Pulse Width
CE
Pulse Width
Data Setup Time
Data Hold Time
Address Hold Time
WE
Data-Off Time
Write Recovery Time
Pulse Width,
OE
,
WE
, or
CE
High
Pulse Width,
OE
,
WE
, or
CE
Low
Figure 1. Read Cycle Timing
SYMBOL
t
RC
t
AA
t
CEL
t
CEA
t
CEZ
t
OEL
t
OEL
t
OEA
t
OEZ
t
OH
t
WC
t
AS
t
WEW
t
CEW
t
DS
t
DH
t
AH
t
WEZ
t
WR
PW
HIGH
PW
LOW
CONDITIONS
MIN
120
5
5
2
5
120
0
100
110
80
5
5
15
40
100
TYP
MAX
120
120
40
100
35
40
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
(Note 8)
(Note 8)
(Note 8)
(Note 8)
(Note 8)
(Note 8)
t
RC
t
CEA
t
OEA
t
CEL
t
OEL
t
OH
t
OEZ
t
AA
VALID
DQ0-DQ7
OE
CE
A0–A4
t
CEZ
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DS1501YN Y2K-Compliant Watchdog Real-Time Clocks
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DS1511Y Y2K-Compliant Watchdog Real-Time Clocks
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