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 B 9/5/01 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.
[size=5]Award link: [url=https://bbs.eeworld.com.cn/thread-438319-1-1.html]>>Download Intel white paper "Software Defined Networking and Telecom Cloud Phased Implementation Method" to win prizes[/url]...
The situation is like this: I built a control system with PC104, customized an operating system with PB, and downloaded the operating system and application program through the network. After the OS a...
The PWM wave generated to drive the half-bridge must be a complementary waveform, but I can only generate two synchronous waveforms with different duty cycles. How can I achieve the generation of half...
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
We know that microcontroller development tools generally include real-time online emulators and programmers. Among them, online emulators are very good tools, but they are also more expensive...[Details]
1 Introduction
PROFIBUS is an international, open, and manufacturer-independent fieldbus standard. It is widely used in manufacturing automation, process industry automation, and automatio...[Details]
With the rapid development of intelligent control technology, computers and information technology, the trend of information appliances IA (Information Application), computers and communications integ...[Details]
VP2188 is a color STN LCD module produced by Jingdian Pengyuan. This module is a dot matrix transmissive color STN display screen with a color scale of 65 k colors and white LED backlight. Its core...[Details]
OC faults may be the most frequent and the most frequent of all faults in the inverter. They alarm during the startup process, during the shutdown process, during operation, and even when powered o...[Details]
Motors are important products that convert electrical energy into mechanical energy to achieve automation, and they are widely used in industrial control, medical electronics, white a...[Details]
Preface
In recent years, white light LEDs have gradually replaced incandescent bulbs and fluorescent lamps because they have unparalleled advantages over traditional light sources in terms...[Details]
0 Introduction
Under normal circumstances, the three-phase power in the power system is symmetrical, and they meet certain amplitude and phase conditions; but when the load changes, the syst...[Details]
0 Introduction
With the rapid development of social economy and science and technology, electric locomotives, subways and electric vehicles will be widely used. The power conversion and cont...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
Fruit planting is an important part of China's agricultural development, and fruit tree pest control operations are becoming more and more important. At present, the overall level of pesticide applica...[Details]
1 Load Regulation
Changes in power supply load will cause changes in power supply output. When the load increases, the output decreases, and vice versa, when the load decreases, the output inc...[Details]
The biggest advantage of Profibus is that it is guaranteed by the stable international standard EN50170 and has been proven to be universal in practical applications. It has been widely used in man...[Details]
The programmable controller directly controls the stepper motor, which can significantly reduce the cost of the control system of the modular machine tool automatic production line. The article int...[Details]
RF/Wirelessly
京公网安备 11010802033920号
EEWORLD
