Cypress Semiconductor CY62167EV30 Технічна специфікація - Сторінка 5
Переглянути онлайн або завантажити pdf Технічна специфікація для Комп'ютерне обладнання Cypress Semiconductor CY62167EV30. Cypress Semiconductor CY62167EV30 15 сторінок. Mobl 16-mbit (1m x 16 / 2m x 8) static ram
Друкувати сторінкуSwitching Characteristics
[14, 15]
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 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 and CE
HZCE
1
t
CE
LOW and CE
PU
1
t
CE
HIGH and 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
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
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
14. Test conditions for all parameters other than tri-state parameters assume signal transition time of 1 V/ns, timing reference levels of V
to V
(typ), and output loading of the specified I
CC
15. AC timing parameters are subject to byte enable signals (BHE or BLE) not switching when chip is disabled. See
16. At any temperature and voltage condition, t
17. t
, t
, t
, and t
transitions are measured when the outputs enter a high impedance state.
HZOE
HZCE
HZBE
HZWE
18. The internal write time of the memory is defined by the overlap of WE, CE
write and any of these signals can terminate a write by going INACTIVE. The data input setup and hold timing must refer to the edge of the signal that terminates the write.
Document #: 38-05446 Rev. *E
Description
HIGH to Data Valid
2
[16]
[16, 17]
[16]
HIGH to Low Z
2
[16, 17]
LOW to High Z
2
HIGH to Power Up
2
LOW to Power Down
2
[16]
[16, 17]
HIGH to Write End
2
[16, 17]
[16]
/I
as shown in
"AC Test Loads and Waveforms" on page
OL
OH
is less than t
, t
is less than t
HZCE
LZCE
HZBE
= V
, BHE or BLE or both = V
1
IL
CY62167EV30 MoBL
45 ns (Industrial/Auto-A)
Min
45
10
10
10
45
35
35
35
35
25
10
4.
application note AN13842
, t
is less than t
, and t
LZBE
HZOE
LZOE
HZWE
, and CE
= V
. All signals must be ACTIVE to initiate a
IL
2
IH
®
Unit
Max
ns
45
ns
ns
45
ns
22
ns
5
ns
18
ns
ns
18
ns
0
ns
45
ns
45
ns
ns
18
ns
ns
ns
ns
0
ns
0
ns
ns
ns
ns
0
ns
18
ns
ns
(typ)/2, input pulse levels of 0
CC
for further clarification.
is less than t
for any device.
LZWE
Page 5 of 14
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