Cypress CY62128EV30 Scheda tecnica - Pagina 5

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Cypress CY62128EV30 Scheda tecnica
Data Retention Waveform
V
CC
CE

Switching Characteristics

[10, 11]
(Over the Operating Range)
Parameter
Read Cycle
t
Read Cycle Time
RC
t
Address to Data Valid
AA
t
Data Hold from Address Change
OHA
t
CE LOW to Data Valid
ACE
t
OE LOW to Data Valid
DOE
t
OE LOW to Low Z
LZOE
t
OE HIGH to High Z
HZOE
CE LOW to Low Z
t
LZCE
t
CE HIGH to High Z
HZCE
CE LOW to Power Up
t
PU
t
CE HIGH to Power Up
PD
[14]
Write Cycle
t
Write Cycle Time
WC
t
CE LOW to Write End
SCE
t
Address Setup to Write End
AW
t
Address Hold from Write End
HA
t
Address Setup to Write Start
SA
WE Pulse Width
t
PWE
t
Data Setup to Write End
SD
t
Data Hold from Write End
HD
t
WE LOW to High Z
HZWE
t
WE HIGH to Low Z
LZWE
Notes
10. CE is the logical combination of CE
11. Test Conditions for all parameters other than tri-state parameters assume signal transition time of 3 ns or less (1 V/ns), timing reference levels of V
pulse levels of 0 to V
, and output loading of the specified I
CC(typ)
12. At any given temperature and voltage condition, t
13. t
, t
, and t
transitions are measured when the output enter a high impedance state.
HZOE
HZCE
HZWE
14. The internal write time of the memory is defined by the overlap of WE, CE = V
terminate a write by going INACTIVE. The data input setup and hold timing should be referenced to the edge of the signal that terminates the write.
Document #: 38-05579 Rev. *D
[10]
DATA RETENTION MODE
V
CC(min)
t
CDR
Description
[12]
[12,13]
[12]
[12, 13]
[12, 13]
[12]
and CE
. When CE
is LOW and CE
1
2
1
/I
as shown in the
OL
OH
is less than t
, t
HZCE
LZCE
V
> 1.5V
DR
45 ns (Ind'l/Auto-A)
Min
Max
45
45
10
45
22
5
18
10
18
0
45
45
35
35
0
0
35
25
0
18
10
is HIGH, CE is LOW; when CE
is HIGH or CE
2
1
"AC Test Loads and Waveforms"
is less than t
, and t
is less than t
HZOE
LZOE
HZWE
. All signals must be ACTIVE to initiate a write and any of these signals can
IL
CY62128EV30
V
CC(min)
t
R
55 ns (Auto-E)
Unit
Min
Max
55
ns
55
ns
10
ns
55
ns
25
ns
5
ns
20
ns
10
ns
20
ns
0
ns
55
ns
55
ns
40
ns
40
ns
0
ns
0
ns
40
ns
25
ns
0
ns
20
ns
10
ns
is LOW, CE is HIGH.
2
/2, input
CC(typ)
on page 4.
for any given device.
LZWE
Page 5 of 11
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