Cypress Semiconductor MoBL CY62128E Fiche technique - Page 5

Parcourez en ligne ou téléchargez le pdf Fiche technique pour {nom_de_la_catégorie} Cypress Semiconductor MoBL CY62128E. Cypress Semiconductor MoBL CY62128E 12 pages. 1-mbit (128k x 8) static ram

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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
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
LZCE
1
t
CE
HZCE
1
t
CE
PU
1
t
CE
PD
1
[15]
Write Cycle
t
Write Cycle Time
WC
t
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
12. Test conditions for all parameters other than tri-state parameters assume signal transition time of 3ns (1V/ns) or less, timing reference levels of 1.5V, input pulse
levels of 0 to 3V, and output loading of the specified I
13. At any given temperature and voltage condition, t
14. t
, t
, and t
transitions are measured when the outputs enter a high impedance state.
HZOE
HZCE
HZWE
15. 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 must be referenced to the edge of the signal that terminates the write.
Document #: 38-05485 Rev. *F
(Over the Operating Range)
Description
LOW and CE
HIGH to Data Valid
2
[13]
[13, 14]
LOW and CE
HIGH to Low-Z
2
[13, 14]
HIGH or CE
LOW to High-Z
2
LOW and CE
HIGH to Power Up
2
HIGH or CE
LOW to Power Down
2
LOW and CE
HIGH to Write End
2
[13, 14]
[13]
/I
as shown in the
OL
OH
is less than t
HZCE
LZCE
[12]
45 ns (Ind'l/Auto-A)
Min
Max
45
45
10
45
22
5
18
[13]
10
18
0
45
45
35
35
0
0
35
25
0
18
10
""
on page 4.
, t
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
®
MoBL
CY62128E
55 ns (Auto-E)
Unit
Min
Max
55
ns
55
ns
10
ns
ns
55
ns
25
ns
5
ns
20
ns
10
ns
20
ns
0
ns
55
55
ns
ns
40
40
ns
ns
0
0
ns
ns
40
25
ns
0
ns
ns
20
ns
10
for any given device.
LZWE
Page 5 of 12
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