6
AC Electrical Characteristics
V
DD
= 5 V
±
5%; T
A
= -20°C to +85°C; Units = nsec
Clock Frequency
ID
#
1
2
3
4
5
6
7
8
9
10
2 MHz
Signal
Clock Period (clk)
Pulse Width, Clock High
Pulse Width, Clock Low
Clock Rise and Fall Time
Input Pulse Width Reset
Input Pulse Width Stop, Limit
Input Pulse Width Index, Index
Input Pulse Width CHA, CHB
Delay CHA to CHB Transition
Input Rise/Fall Time CHA, CHB,
Index
Input Rise/Fall Time Reset, ALE,
CS, OE, Stop, Limit
Input Pulse Width ALE, CS
Delay Time, ALE Fall to CS Fall
Delay Time, ALE Rise to CS Rise
Address Setup Time Before
ALE Rise
Address Setup Time Before CS
Fall
Write Data Setup Time Before
CS Rise
Address/Data Hold Time
Setup Time, R/W Before CS Rise
Hold Time, R/W After CS Rise
Delay Time, Write Cycle, CS
Rise to ALE Fall
Delay Time, Read/Write, CS
Rise to CS Fall
Write Cycle, ALE Fall to ALE
Fall For Next Write
Symbol
t
CPER
t
CPWH
t
CPWL
t
CR
t
IRST
t
IP
t
IX
t
IAB
t
AB
2500
600
1600
1600
600
Min.
500
230
200
50
5000
1100
3100
3100
1100
Max.
1 MHz
Min.
1000
300
200
50
5 clk
1 clk
+ 100 ns
3 clk
+ 100 ns
3 clk
+ 100 ns
1 clk
+ 100 ns
900
900 (clk
< 1 MHz)
50
80
50
50
20
20
200
50
Max.
Min.
Max.
Formula*
t
IABR
450
11
12
13
14
15
16
17
18
19
20
21
22
23
t
IR
t
IPW
t
AC
t
CA
t
ASR1
t
ASR
80
50
50
20
20
50
80
50
50
20
20
50
t
DSR
t
H
t
WCS
t
WH
t
CSAL
t
CSCS
t
WC
20
20
20
20
1700
1500
1830
20
20
20
20
3400
3000
3530
20
20
20
20
3.4 clk
3 clk
3.7 clk
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
