DS1642 Maxim, DS1642 Datasheet - Page 8

• Manufacturer Part Number: DS1642
• Description: The DS1642 is a 2k x 8 nonvolatile static RAM and a full-function real-time clock (RTC), both of which are accessible in a bytewide format
• Manufacturer: Maxim

AC CHARACTERISTICS—WRITE CYCLE
(V
Write Cycle Time
Address Setup Time
Data Setup Time
Data Hold Time
Address Hold Time
Write Recovery Time
CE
WE
WE
CC
Pulse Width
= 5.0V ±10, T
Pulse Width
Data Off Time
PARAMETER
A
= 0°C to +70°C.)
SYMBOL
t
t
t
t
WEW
t
t
CEW
t
WEZ
t
t
WC
WR
DH
AH
AS
DS
85ns ACCESS
MIN
85
65
70
35
0
0
5
5
8 of 13
MAX
30
100ns ACCESS
MIN
100
70
75
40
0
0
5
5
MAX
35
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
DS1642