Cypress CY62158EV30 Fiche technique - Page 5

Parcourez en ligne ou téléchargez le pdf Fiche technique pour {nom_de_la_catégorie} Cypress CY62158EV30. Cypress CY62158EV30 11 pages. Mobl 8-mbit (1024k x 8) static ram

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Cypress CY62158EV30 Fiche technique

Switching Characteristics

Parameter
Read Cycle
t
Read Cycle Time
RC
t
Address to Data Valid
AA
t
Data Hold from Address Change
OHA
t
CE
LOW and CE
ACE
1
t
OE LOW to Data Valid
DOE
t
OE LOW to Low Z
LZOE
t
OE HIGH to High Z
HZOE
t
CE
LOW and CE
LZCE
1
t
CE
HIGH or CE
HZCE
1
t
CE
LOW and CE
PU
1
t
CE
HIGH or CE
PD
1
[14]
Write Cycle
t
Write Cycle Time
WC
t
CE
LOW and CE
SCE
1
t
Address Setup to Write End
AW
t
Address Hold from Write End
HA
t
Address Setup to Write Start
SA
t
WE Pulse Width
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
11. Test conditions for all parameters other than tri-state parameters assume signal transition time of 3 ns or less (1V/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 outputs enter a high impedance state.
HZOE
HZCE
HZWE
14. The internal write time of the memory is defined by the overlap of WE, CE
signals can 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 #: 38-05578 Rev. *D
[11]
(Over the Operating Range)
Description
HIGH to Data Valid
2
[12]
[12, 13]
[12]
HIGH to Low Z
2
[12, 13]
LOW to High Z
2
HIGH to Power Up
2
LOW to Power Down
2
HIGH to Write End
2
[12, 13]
[12]
/I
as shown in
OL
OH
is less than t
, t
HZCE
LZCE
HZOE
= V
1
CY62158EV30 MoBL
Min
45
10
5
10
0
45
35
35
0
0
35
25
0
10
"AC Test Loads and Waveforms" on page
is less than t
, and t
is less than t
LZOE
HZWE
, and CE
= V
. All signals must be ACTIVE to initiate a write and any of these
IL
2
IH
45 ns
Unit
Max
ns
45
ns
ns
45
ns
22
ns
ns
18
ns
ns
18
ns
ns
45
ns
ns
ns
ns
ns
ns
ns
ns
ns
18
ns
ns
/2, input
CC(typ)
4.
for any given device.
LZWE
Page 5 of 11
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