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コンピュータ・ハードウェア Cypress CY62256のPDF 仕様書をオンラインで閲覧またはダウンロードできます。Cypress CY62256 11 ページ。 256k (32k x 8) static ram
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Electrical Characteristics
Parameter
Description
I
Automatic CE
SB2
Power-down Current—
CMOS Inputs
[4]
Capacitance
Parameter
C
IN
C
OUT
AC Test Loads and Waveforms
R1 1800
5V
OUTPUT
100 pF
INCLUDING
JIG AND
SCOPE
(a)
Data Retention Characteristics
Parameter
V
V
for Data Retention
DR
CC
I
Data Retention Current
CCDR
[4]
t
Chip Deselect to Data Retention Time
CDR
[4]
t
Operation Recovery Time
R
Data Retention Waveform
V
CC
CE
Notes:
4.
Tested initially and after any design or process changes that may affect these parameters.
5.
No input may exceed V
+ 0.5V.
CC
Document #: 38-05248 Rev. *B
Over the Operating Range (continued)
Test Conditions
Max. V
, CE > V
CC
V
> V
0.3V, or V
IN
CC
0.3V, f = 0
Indust'l Temp Range
Description
Input Capacitance
Output Capacitance
5V
OUTPUT
R2
5 pF
990
INCLUDING
JIG AND
SCOPE
Equivalent to:
OUTPUT
Description
L
LL
LL Ind'l
3.0V
t
CDR
Min. Typ.
0.3V
CC
<
IN
L
LL
LL
Test Conditions
T
= 25 C, f = 1 MHz,
A
V
= 5.0V
CC
R1 1800
3.0V
R2
GND
990
(b)
THÉ VENIN EQUIVALENT
639
[5]
Conditions
V
= 3.0V, CE > V
CC
CC
V
> V
0.3V, or V
IN
CC
IN
DATA RETENTION MODE
V
> 2V
DR
CY62256 55
CY62256 70
[3]
Max.
Min. Typ.
1
5
2
50
0.1
5
0.1
10
Max.
6
8
ALL INPUT PULSES
90%
10%
< 5 ns
1.77V
[3]
Min.
Typ.
2.0
0.3V,
2
< 0.3V
0.1
0.1
0
t
RC
3.0V
t
R
CY62256
[3]
Max.
Unit
1
5
mA
2
50
A
0.1
5
A
0.1
10
A
Unit
pF
pF
90%
10%
< 5 ns
Max.
Unit
V
50
A
5
A
10
A
ns
ns
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