DS1554-100 DALLAS [Dallas Semiconductor], DS1554-100 Datasheet - Page 13

• Manufacturer Part Number: DS1554-100
• Description: 256K NV Y2KC Timekeeping RAM
• Manufacturer: DALLAS [Dallas Semiconductor]

WRITE CYCLE, AC CHARACTERISTICS
WRITE CYCLE, AC CHARACTERISTICS
PARAMETER
Write Cycle Time
Address Access Time
Data Setup Time
Data Hold time
Data Hold time
Address Hold Time
Address Hold Time
Write Recovery Time
PARAMETER
Write Cycle Time
Address Setup Time
Data Setup Time
Data Hold Time
Data Hold Time
Address Hold Time
Address Hold Time
Write Recovery Time
WE
CE
WE
WE
CE
WE
Pulse Width
Pulse Width
Pulse Width
Data Off Time
Pulse Width
Data Off Time
SYMBOL
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
t
t
t
WEW
WEW
t
t
t
t
CEW
CEW
t
t
WEZ
t
t
WEZ
DH1
DH2
AH1
AH2
DH1
DH2
AH1
AH2
WC
WR
WC
WR
AS
DS
AS
DS
13 of 21
120 ns access
MIN
MIN
70 ns access
120
100
110
70
50
60
30
80
10
X
X
X
X
0
0
5
5
0
0
0
MAX
MAX
25
40
(0 C to 70 C; V
(0 C to 70 C; V
100 ns access
150 ns access
MIN
MIN
100
150
130
140
70
75
40
90
10
X
X
X
X
0
0
5
5
0
0
0
MAX
MAX
35
50
CC
CC
UNITS
UNITS
= 5.0V 10%)
= 3.3V 10%)
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
NOTES
10
10
10
10
DS1554
9
9
9
9