参数资料
型号: MD2203
厂商: Electronic Theatre Controls, Inc.
英文描述: Disk OnChip 2000 DIP
中文描述: 2000年双酯片上磁盘
文件页数: 16/21页
文件大小: 948K
代理商: MD2203
DiskOnChip 2000 DIP
7.9 Timing Specifications
7.9.1 Read Cycle Timing
CE#
A[0..12]
OE#
D[0..7]
WE#
T
SU
(A)
T
EN
(D)
T
HO
(CE1)
T
SU
(CE0)
T
HO
(CE0)
T
SU
(CE1)
T
REC
T
ACC
T
DIS
(D)
Figure 5: Read Cycle
Symbol
3.3V
5V
Description
Min (ns)
Max (ns)
Min (ns)
Max (ns)
Notes
T
SU
(A)
Address to OE#
è
setup
2
10
T
HO
(A)
OE#
è
to Address hold
35
56
T
SU
(CE0)
CE#
è
to OE#
è
setup
0
0
1
T
HO
(CE0)
OE#
to CE# = 0 hold
0
0
2
T
HO
(CE1)
OE# or WE#
to CE# = 1 hold
8
42
T
SU
(CE1)
CE#
to WE# or OE#
è
setup time
8
42
T
REC
OE#
to start of next cycle
20
59
T
ACC
Read access time
110
130
T
EN
(D)
OE#
è
to D active delay
15
75
7
91
T
DIS
(D)
OE#
to D Hi-Z delay
13
44
Note 1
: CE# may be asserted any time before or after OE# is asserted. If CE# is asserted after OE#, all timing relative to
OE# asserted will be referenced instead to the time CE# was asserted.
Note 2
: CE# may be negated any time before or after OE# is negated. If CE# is negated before OE#, all timing relative to
OE# negated will be referenced instead to the time CE# was negated.
91-SR-002-42-8L Rev.
3.4
16
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