參數(shù)資料
型號: CY62148BLL-70SI
廠商: CYPRESS SEMICONDUCTOR CORP
元件分類: DRAM
英文描述: 512K x 8 Static RAM
中文描述: 512K X 8 STANDARD SRAM, 70 ns, PDSO32
封裝: 0.450 INCH, PLASTIC, SOIC-32
文件頁數(shù): 5/11頁
文件大?。?/td> 189K
代理商: CY62148BLL-70SI
CY62148B MoBL
Document #: 38-05039 Rev. *B
Page 5 of 11
Data Retention Characteristics
(Over the Operating Range)
Parameter
V
DR
I
CCDR
Description
Conditions
Min.
2.0
Typ.
[3]
Max.
Unit
V
μ
A
μ
A
ns
ns
V
CC
for Data Retention
Data Retention Current
Com
l
Ind
l
LL
LL
No input may exceed
V
CC
+ 0.3V
V
CC
= V
DR
= 3.0V
CE > V
CC
0.3V
V
IN
> V
CC
0.3V or
V
IN
< 0.3V
20
20
t
CDR[4]
t
R[9]
Chip Deselect to Data Retention Time
Operation Recovery Time
0
t
RC
Data Retention Waveform
Switching Waveforms
Read Cycle No.1
[10, 11]
Read Cycle No. 2 (OE Controlled)
[11, 12]
Notes:
9.
10. Device is continuously selected. OE, CE = V
IL
.
11.
WE is HIGH for read cycle.
12. Address valid prior to or coincident with CE transition LOW.
Full Device operatin requires linear V
ramp from V
DR
to V
CC(min)
> 100
μ
s or stable at V
cc(min)
> 100
μ
s.
3.0V
3.0V
t
CDR
V
DR
> 2V
DATA RETENTION MODE
t
R
CE
V
CC
PREVIOUS DATA VALID
DATA VALID
t
RC
t
AA
t
OHA
ADDRESS
DATA OUT
50%
50%
DATA VALID
t
RC
t
ACE
t
DOE
t
LZOE
t
LZCE
t
PU
HIGH IMPEDANCE
t
HZOE
t
HZCE
t
PD
HIGH
OE
CE
I
SB
IMPEDANCE
ADDRESS
DATA OUT
V
CC
SUPPLY
CURRENT
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