Cypress Semiconductor CY62147EV30 MoBL Руководство - Страница 5
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Switching Characteristics
[12, 13]
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
t
CE LOW to Low Z
LZCE
t
CE HIGH to High Z
HZCE
t
CE LOW to Power Up
PU
t
CE HIGH to Power Down
PD
t
BLE/BHE LOW to Data Valid
DBE
t
BLE/BHE LOW to Low Z
LZBE
t
BLE/BHE HIGH to HIGH Z
HZBE
[16]
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
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
12. Test conditions for all parameters other than tri-state parameters assume signal transition time of 3 ns (1V/ns) or less, timing reference levels of V
levels of 0 to V
, and output loading of the specified I
CC(typ)
13. AC timing parameters are subject to byte enable signals (BHE or BLE) not switching when chip is disabled. See application note
14. At any temperature and voltage condition, t
15. t
, t
, t
, and t
transitions are measured when the outputs enter a high impedance state.
HZOE
HZCE
HZBE
HZWE
16. The internal write time of the memory is defined by the overlap of WE, CE = V
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 #: 38-05440 Rev. *G
Description
[14]
[14, 15]
[14]
[14, 15]
[14]
[14, 15]
[14, 15]
[14]
/I
as shown in the
OL
OH
is less than t
, t
is less than t
HZCE
LZCE
HZBE
, BHE, BLE, or both = V
IL
CY62147EV30 MoBL
45 ns (Ind'l/Auto-A)
Min
Max
Min
45
45
10
45
22
5
18
10
18
0
45
45
10
18
45
35
35
0
0
35
35
25
0
18
10
AC Test Load and Waveforms
on page 4.
, t
is less than t
, and t
LZBE
HZOE
LZOE
. All signals must be active to initiate a write and any of these
IL
55 ns (Auto-E)
Unit
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
10
ns
20
ns
55
ns
40
ns
40
ns
0
ns
0
ns
40
ns
40
ns
25
ns
0
ns
20
ns
10
ns
/2, input pulse
CC(typ)
AN13842
for further clarification.
is less than t
for any device.
HZWE
LZWE
Page 5 of 13
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