ds2252t Maxim Integrated Products, Inc., ds2252t Datasheet - Page 10

• Manufacturer Part Number: ds2252t
• Description: Ds2252t Secure Microcontroller Module
• Manufacturer: Maxim Integrated Products, Inc.

AC CHARACTERISTICS—EXPANDED BUS MODE TIMING SPECIFICATIONS
(V
EXPANDED DATA MEMORY READ CYCLE
14
15
16
17
18
19
20
21
22
23
24
25
26
27
#
1
2
3
4
CC
= 5V ±10%, T
PARAMETER
Oscillator Frequency
ALE Pulse Width
Address Valid to ALE Low
Address Hold After ALE Low
Data Hold after
Data Float after
ALE Low to Valid Data In
Valid Address to Valid Data
In
ALE Low to
Address Valid to
Data Valid to
Data Valid to
Data Valid after
RD
WR
RD
RD
RD
Pulse Width
Low to Valid Data In
Low to Address Float
or
Pulse Width
WR
High to ALE High
RD
WR
WR
RD
RD
WR
A
or
RD
Going Low
High
= 0°C to +70°C.)
High
High
WR
High
or
WR
Low
Low
At 12MHz
At 16MHz
At 12MHz
At 16MHz
At 12MHz
At 16MHz
At 12MHz
At 16MHz
10 of 16
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
t
t
RDHALH
1/t
t
ALLRDL
t
t
DVWRH
WRHDV
t
AVAAV
RDHDV
DVWRL
RDLDV
RDHDZ
AVRDL
AVALL
ALLVD
RDLAZ
WRPW
RDPW
AVDV
ALPW
CLK
6t
6t
4t
7t
2t
3t
7t
t
t
t
t
t
CLK
CLK
CLK
CLK
CLK
CLK
CLK
CLK
CLK
CLK
CLK
CLK
MIN
1.0
0
- 40
- 35
- 100
- 100
- 130
- 60
- 150
- 50
- 40
- 40
- 50
- 90
5t
5t
9t
9t
8
3t
2t
8t
t
16 (-16)
CLK
CLK
CLK
CLK
CLK
CLK
CLK
MAX
CLK
CLK
0
- 150
+ 50
- 165
- 105
- 165
- 105
+ 50
- 70
- 90
UNITS
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns