ds2251 Maxim Integrated Products, Inc., ds2251 Datasheet - Page 15

• Manufacturer Part Number: ds2251
• Description: 128k Soft Microcontroller Module
• Manufacturer: Maxim Integrated Products, Inc.

SERIAL PORT TIMING - MODE 0
AC CHARACTERISTICS (cont'd)
PARALLEL PROGRAM LOAD TIMING
41
45
46
47
48
49
50
51
52
53
#
PARAMETER
Pulse Width of
Byte-wide Address Hold after
During MOVX
Delay from Byte-wide Address Valid
Low During MOVX
Byte-wide Data Setup to
MOVX (read)
Byte-wide Data Hold after
During MOVX (read)
Byte-wide Address Valid to R/
During MOVX (write)
Delay from R/
During MOVX (write)
Valid Data Out Hold Time from
Valid Data Out Hold Time from R/
Write Pulse Width (R/
W
PE
Low to Valid Data Out
3-4
W
PE
Low Time)
PE
3-4 High During
3-4 High
PE
W
PE
3-4 High
Active
W
3-4 High
PE
High
3-4
15 of 20
SYMBOL
t
t
t
t
t
t
t
t
t
RWHDV
RWLPW
t
AVRWL
RWLDV
CEHDA
DACEH
CEHDV
CEHDV
CELDA
CEPW
(t
A
=0˚C to70˚C; V
1t
4t
4t
4t
3t
1t
6t
CLK
MIN
CLK
CLK
CLK
CLK
CLK
CLK
10
20
0
+40
-35
-30
-35
-35
-15
-20
MAX
CC
=5V
UNITS
DS2251T
10%)
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns