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.
The electronic clock function has been realized, and I want to add a pause counting function. Press the A button (the fourth button in the first row) to pause, and press the B button (the fourth butto...
This is a good resource for Ti University Program. You will definitely gain a lot from reading it. [[i] This post was last edited by Xinhai Baby on 2011-10-12 09:30 [/i]]...
Original URL [url=http://user.qzone.qq.com/516903259/blog/1267969405]http://user.qzone.qq.com/516903259/blog/1267969405[/url] //by double z #include
#define FENBIANLV 150
#define CYCLEMUN 10bit over =...
[font=微软雅黑][size=3]Before registering, please read these Terms of Service carefully. If you register successfully, you will be deemed to have voluntarily accepted all the contents of these Terms of Se...
For those of you who have experience using i2c, there is currently a case where you need to use i2c to write and read the adc value. Test it before the component comes back. Currently, the loopback mo...
1. Composition of GPRS three-meter centralized meter reading and control system The master station reads, monitors and controls the metering data and related information of multiple wireless meters th...
According to foreign media reports, Ford Motor has applied to the U.S. Patent and Social Security Administration (USPTO) for a patent for a remote vehicle control system that may be used in future ...[Details]
1. Project Overview
1.1 Introduction
Currently, most music files are saved in MP3 format, a lossy audio compression format that cannot perfectly reproduce the original music. With the exp...[Details]
introduction
Bluetooth technology is a short-range wireless communication technology designed to replace wired cables. It is a wireless communication technology standard developed by the SIG, ...[Details]
1 Introduction
In the mid-1960s, American scientist Maas conducted extensive experimental research on the charging process of open-cell batteries and proposed an acceptable charging curve for ...[Details]
Since the beginning of this year, price wars have intensified, new models have been launched one after another, used cars with zero kilometers have become a hot topic, and the industry's internal c...[Details]
introduction
As “energy conservation and emission reduction” has become an indicator of the National Economic Development Outline of the 11th Five-Year Plan, people’s awareness of green enviro...[Details]
In the scorching summer, electric fans are a must-have for cooling down people's homes. However, I believe most people have encountered this situation: the fan is plugged in, the switch is pressed,...[Details]
While the current industry consensus is that autonomous vehicles are robots and that their systems are managed using robotics-developed thinking, there are also cases where autonomous driving is ac...[Details]
In the electronics manufacturing industry, surface mount technology (SMT) placement machines are core equipment for production lines. However, with many different models available on the market, ch...[Details]
Over the past decade, the narrative surrounding fuel vehicles has been one of decline and replacement. Under the onslaught of new energy vehicles, traditional automakers have been forced to acceler...[Details]
Electric vehicles will revolutionize transportation, changing fuel consumption, carbon emissions, costs, maintenance, and driving habits. Currently, a major selling point for electric vehicles is t...[Details]
When American cartoonist Chester Gould sketched the watch on Dick Tracy's wrist, he had no idea that science fiction would become reality 70 years later. As a comic strip artist, Gould imagined fut...[Details]
introduction
With the development of society, people's requirements for the quality of refrigerated and frozen foods are constantly improving. The changes in food appearance and nutritional co...[Details]
For self-driving cars, LiDAR is the sensory organ that allows them to "see the road." Simply put, its operating principle involves sending out a laser beam, receiving the echo, and ultimately gener...[Details]
The transition to SDVs (software-defined vehicles) involves more than just replacing parts; rather, it involves the organic connection of various elements, from internal vehicle systems to ext...[Details]
MCU
京公网安备 11010802033920号
EEWORLD
