Cypress CY62167EV18 Specification Sheet - Page 5

Browse online or download pdf Specification Sheet for Computer Hardware Cypress CY62167EV18. Cypress CY62167EV18 14 pages. Mobl 16 mbit (1m x 16) static ram

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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
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
[17]
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
13. Test conditions for all parameters other than tri-state parameters are based on signal transition time of 1V/ns, timing reference levels of V
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 given temperature and voltage condition, t
device.
16. t
, t
, t
, and t
transitions are measured when the output enters a high impedance state.
HZOE
HZCE
HZBE
HZWE
17. The internal memory write time is defined by the overlap of WE, CE
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 #: 38-05447 Rev. *G
Description
HIGH to Data Valid
2
[15]
[15, 16]
[15]
HIGH to Low-Z
2
[15, 16]
LOW to High-Z
2
HIGH to Power Up
2
LOW to Power Down
2
[15]
[15, 16]
HIGH to Write End
2
[15, 16]
[15]
/I
as shown in
AC Test Loads and Waveforms on page
OL
OH
is less than t
, t
HZCE
LZCE
HZBE
= V
, BHE and/or BLE = V
1
IL
Min
55
10
5
10
0
10
55
40
40
0
0
40
40
25
0
10
4.
application note AN13842
is less than t
, t
is less than t
LZBE
HZOE
LZOE
, and CE
= V
. All signals must be ACTIVE to initiate a write and
IL
2
IH
CY62167EV18 MoBL
55 ns
Unit
Max
ns
55
ns
ns
55
ns
25
ns
ns
18
ns
ns
18
ns
ns
55
ns
55
ns
ns
18
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
20
ns
ns
/2, input pulse levels
CC(typ)
for further clarification.
, and t
is less than t
for any given
HZWE
LZWE
Page 5 of 13
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