DS89C420-ENL MAXIM [Maxim Integrated Products], DS89C420-ENL Datasheet - Page 48

• Manufacturer Part Number: DS89C420-ENL
• Description: Ultra-High-Speed Microcontroller
• Manufacturer: MAXIM [Maxim Integrated Products]

ALE Low to RD or WR
Low
Port 0 Address Valid to
Port 2 Address Valid to
Data Out Valid to WR
Transition
Data
High
*
RD
RD
RD
Specifications to -40°C are guaranteed by design and not production tested.
or WR Low
or WR Low
or WR High to ALE
Hold
PARAMETER
After WR
SYMBOL
(
(t
t
(
(
t
t
t
t
t
t
t
t
AVWL0)
AVWL2)
WHQX
WHLH)
AVRL0
AVRL2
QVWX
RHLH
LLWL)
LLRL
0 + t
0.5t
t
+ t
STC2
MIN
CLCL
20
PAGE MODE 1
STC5
-5
STC2
- 2
1 CYCLE
- 8
- 5
0.5t
t
+ t
STC2
MAX
CLCL
STC2
+ 6
+ 1
2t
0.5t
t
CLCL
+ t
STC2
MIN
t
CLCL
STC2
20
PAGE MODE 1
-5
STC5
- 8 +
- 2
2 CYCLE
- 5
2t
t
CLCL
STC2
MAX
t
STC2
+ 8 +
+ 6
48 of 58
4t
1.5t
t
CLCL
+ t
STC2
MIN
t
CLCL
STC2
20
PAGE MODE 1
-5
STC5
- 8 +
- 2
4 CYCLE
- 5
4t
t
CLCL
STC2
MAX
t
STC2
+ 8 +
+ 6
0.5t
1.5t
t
CLCL
t
STC2
MIN
CLC L
CLCL
t
t
t
STC2
STC2
STC5
20
PAGE MODE 2
-5
- 5 +
- 2
- 8 +
- 5 +
0.5t
t
+ t
STC2
MAX
CLCL
STC2
+ 6
+ 4
0.5t
1.5t
t
CLCL
t
NON-PAGE MODE
STC2
MIN
CLCL
CLCL
t
t
t
STC2
STC2
STC5
20
-5
- 5 +
- 2
- 8 +
- 5 +
0.5t
t
+ t
STC2
MAX
CLCL
STC2
+ 6
+ 4
UNITS
ns
ns
ns
ns
ns
ns
DS89C420
NOTES
2
2
2
1
1
1