NOTICE: Stresses above those listed under "Absolute Maximums Rating" may cause permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Recommended Operating Conditions
Symbol
V
CC
V
IH
V
IL
T
C
Parameter
Power Supply Voltage
Input High Voltage
Input Low Voltage
Case Operating Temperature (Military)
Minimum
+4.5
+2.0
-0.5
-55
Maximum
+5.5
V
CC
+ 0.3
+0.8
+125
Units
V
V
V
°C
A
Capacitance
(V
IN
= 0V, f = 1MHz, T
C
= 25°C)
Symbol
C
AD
C
OE
C
WE
(1-4)
C
CE
(1-4)
C
I
/
O
Parameter
A
0
– A
16
Capacitance
Output Enable Capacitance
Write Enable Capacitance
Chip Enable Capacitance
I/O0 – I/O31 Capacitance
Maximum
50
50
20
20
20
Units
pF
pF
pF
pF
pF
DC Characteristics
(Vcc = 5.0V, Vss = 0V, T
C
= -55°C to +125°C, unless otherwise specified)
Parameter
Input Leakage Current
Output Leakage Current
Operating Supply Current x 32 Mode
Operating Supply Current
Output Low Voltage
Output High Voltage
Sym
I
LI
Conditions
V
CC
= 5.5V, V
IN
= GND to V
CC
Minimum
Maximum
10
10
250
5
0.45
Units
µA
µA
mA
mA
V
V
I
LO
X
32
CE = OE = V
IH
,
V
OUT
= GND to V
CC
I
CC
X
32
CE = V
IL
,
OE = V
IH
, f = 5Mhz
I
SB
V
OL
V
OH
CE = V
IH
, OE = V
IH
,
f = 5Mhz
I
OL
= +2.1mA, V
CC
= 4.5V
I
OH
= –400µA, V
CC
= 4.5V
2.4
Truth Table
CE
H
L
L
X
X
X
OE
X
L
H
H
X
L
WE
X
H
L
X
H
X
Mode
Standby
Read
Write
Out Disable
Write
Inhibit
Data I/O
High Z
Data Out
Data In
High Z
-
-
Aeroflex Circuit Technology
2
SCD1662 REV C 9/6/02 Plainview NY (516) 694-6700
AC Write Characteristics
(V
CC
= 5V, V
SS
= 0V, T
C
= -55°C to +125°C)
Parameter
Write Cycle Time
Address Set-up Time
Write Pulse Width (WE or CE)
Chip Enable Set-up Time
Address Hold Time
Data Hold Time
Chip Enable Hold Time
Data Set-up Time
Output Enable Set-up Time
Output Enable Hold Time
Symbol
t
WC
t
AS
t
WP
t
CE
t
AH
t
DH
t
CEH
t
DS
t
OES
t
OEH
Min
10
150
0
100
10
0
100
10
10
Max
10
Units
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
A
AC Read Characteristics
(V
CC
= 5V, V
SS
= 0V, T
C
= -55°C to +125°C)
Read Cycle Parameter
Read Cycle Time
Address Access Time
Chip Enable Access Time
Output Hold From Address Change,
OE or CE
Output Enable to Output Valid
Chip Enable or OE to High Z Output
Symbol
t
RC
t
ACC
t
ACE
t
OH
t
OE
t
DF
–120
Min
120
120
120
0
0
55
70
0
0
–140
140
140
140
0
55
70
0
–150
150
150
150
0
55
70
0
–200
200
200
200
0
55
70
0
–250
250
250
250
0
85
70
0
–300
Max
300
300
300
Max Min
Max Min
Max Min
Max Min
Max Min
Units
ns
ns
ns
ns
85
70
ns
ns
Page Write Characteristics
(V
CC
= 5V, V
SS
= 0V, T
C
= -55°C to +125°C)
Parameter
Write Cycle Time
Address Set-up Time
Address Hold Time , See Note 1
Data Set-up Time
Data Hold Time
Write Pulse Width
Byte Load Cycle Time
Write Pulse Width High
Note 1 – Page Address must remain valid for duration of write cycle.
EtherCAT（Ethernet for Control Automation Technology）是一种基于以太网的开发构架的实时工业现场总线通讯协议，EtherCAT是最快的工业以太网技术之一，同时它提供纳秒级精确同步。相对于设置了相同循环时间的其他总线系统，EtherCAT系统结构通常能减少25%-30%的CPU负载，EtherCAT的出现为系统的实时性能和拓扑的灵活性树立了新的标准。...[详细]
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