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DS1554 Datasheet(PDF) 13 Page - Dallas Semiconductor

Part # DS1554
Description  256K NV Y2KC Timekeeping RAM
PDF  21 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1554 Datasheet(HTML) 13 Page - Dallas Semiconductor

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DS1554
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WRITE CYCLE, AC CHARACTERISTICS
(0
°C to 70°C; V
CC = 5.0V
±10%)
70 ns access
100 ns access
PARAMETER
SYMBOL
MIN
MAX
MIN
MAX
UNITS
NOTES
Write Cycle Time
tWC
70
100
ns
Address Access Time
tAS
00
ns
WE
Pulse Width
tWEW
50
70
ns
CE
Pulse Width
tCEW
60
75
ns
Data Setup Time
tDS
30
40
ns
Data Hold time
tDH1
0
0
ns
9
Data Hold time
tDH2
X
X
ns
10
Address Hold Time
tAH1
5
5
ns
9
Address Hold Time
tAH2
X
X
ns
10
WE
Data Off Time
tWEZ
25
35
ns
Write Recovery Time
tWR
55
ns
WRITE CYCLE, AC CHARACTERISTICS
(0
°C to 70°C; V
CC = 3.3V
±10%)
120 ns access
150 ns access
PARAMETER
SYMBOL
MIN
MAX
MIN
MAX
UNITS
NOTES
Write Cycle Time
tWC
120
150
ns
Address Setup Time
tAS
00
ns
WE
Pulse Width
tWEW
100
130
ns
CE
Pulse Width
tCEW
110
140
ns
Data Setup Time
tDS
80
90
ns
Data Hold Time
tDH1
0
0
ns
9
Data Hold Time
tDH2
X
X
ns
10
Address Hold Time
tAH1
0
0
ns
9
Address Hold Time
tAH2
X
X
ns
10
WE
Data Off Time
tWEZ
40
50
ns
Write Recovery Time
tWR
10
10
ns



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