DS1643 Maxim, DS1643 Datasheet - Page 9

• Manufacturer Part Number: DS1643
• Description: The DS1643 is an 8K x 8 nonvolatile static RAM with a full function Real Time Clock (RTC) that are both accessible in a byte-wide format
• Manufacturer: Maxim

AC CHARACTERISTICS—WRITE CYCLE
(V
Write Cycle Time
Address Setup Time
CE2 Pulse Width
Data Setup Time
Data Hold Time
Address Hold Time
Write Recovery Time
WE
CE
WE
CC
Pulse Width
Pulse Width
Data Off Time
= 5.0V 10%, T
PARAMETER
A
= 0C to +70C.)
SYMBOL
t
t
t
t
CE2W
t
WEW
t
t
CEW
t
WEZ
t
t
WC
WR
DH
AH
AS
DS
9 of 17
MIN
85
65
70
75
35
0
0
5
5
ACCESS
85ns
MAX
30
MIN
100
70
75
85
40
0
0
5
5
ACCESS
100ns
MAX
35
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DS1643/DS1643P
NOTES
4
4
4
4
4
4
4
4
4
4