Cypress Semiconductor MoBL CY62157EV30 Spezifikationsblatt - Seite 6
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Switching Characteristics
[13, 14]
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
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
t
BLE/BHE LOW to Data Valid
DBE
t
BLE/BHE LOW to Low-Z
LZBE
t
BLE/BHE HIGH to HIGH-Z
HZBE
[18]
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
BLE/BHE LOW to Write End
BW
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
13. Test conditions for all parameters other than tri-state parameters assume signal transition time of 3 ns or less, timing reference levels of V
levels of 0 to V
, and output loading of the specified I
CC(typ)
14. AC timing parameters are subject to byte enable signals (BHE or BLE) not switching when chip is disabled. See
15. At any temperature and voltage condition, t
16. t
, t
, t
, and t
transitions are measured when the outputs enter a high-impedance state.
HZOE
HZCE
HZBE
HZWE
17. If both byte enables are toggled together, this value is 10 ns.
18. The internal write time of the memory is defined by the overlap of WE, CE = V
write and any of these signals can 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 #: 38-05445 Rev. *E
Description
LOW and CE
HIGH to Data Valid
2
[15]
[15, 16]
LOW and CE
HIGH to Low-Z
2
HIGH and CE
LOW to High-Z
2
LOW and CE
HIGH to Power Up
2
HIGH and CE
LOW to Power Down
2
[15, 17]
[15, 16]
LOW and CE
HIGH to Write End
2
[15, 16]
[15]
/I
as shown in the
OL
OH
is less than t
, t
HZCE
LZCE
HZBE
45 ns (Ind'l/Auto-A)
[15]
[15, 16]
"AC Test Loads and Waveforms" on page
is less than t
, t
is less than t
LZBE
HZOE
LZOE
, BHE, BLE or both = V
, and CE
IL
IL
CY62157EV30 MoBL
Unit
Min
Max
45
45
10
45
22
5
18
10
18
0
45
45
5
18
45
35
35
0
0
35
35
25
0
18
10
/2, input pulse
CC(typ)
5.
application note AN13842
for further clarification.
, and t
is less than t
for any device.
HZWE
LZWE
= V
. All signals must be active to initiate a
2
IH
Page 6 of 14
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