cy62167e Cypress Semiconductor Corporation., cy62167e Datasheet - Page 5

• Manufacturer Part Number: cy62167e
• Description: 16-mbit 1m X 16 / 2m X 8 Static Ram
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 001-15607 Rev. *A
Switching Characteristics
Over the Operating Range
Notes
READ CYCLE
t
t
t
t
t
t
t
t
t
t
t
t
t
t
WRITE CYCLE
t
t
t
t
t
t
t
t
t
t
t
13. Test conditions for all parameters other than tri-state parameters assume signal transition time of 1 V/ns, timing reference levels of V
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
17. The internal write time of the memory is defined by the overlap of WE, CE
RC
AA
OHA
ACE
DOE
LZOE
HZOE
LZCE
HZCE
PU
PD
DBE
LZBE
HZBE
WC
SCE
AW
HA
SA
PWE
BW
SD
HD
HZWE
LZWE
Parameter
of 0 to V
a write and any of these signals can terminate a write by going inactive. The data input setup and hold timing should be referenced to the edge of the signal that
terminates the write.
HZOE
, t
HZCE
CC
(typ), and output loading of the specified I
, t
HZBE
[17]
Read Cycle Time
Address to Data Valid
Data Hold from Address Change
CE
OE LOW to Data Valid
OE LOW to LOW-Z
OE HIGH to High-Z
CE
CE
CE
CE
BLE/BHE LOW to Data Valid
BLE/BHE LOW to Low-Z
BLE/BHE HIGH to HIGH-Z
Write Cycle Time
CE
Address Setup to Write End
Address Hold from Write End
Address Setup to Write Start
WE Pulse Width
BLE/BHE LOW to Write End
Data Setup to Write End
Data Hold from Write End
WE LOW to High-Z
WE HIGH to Low-Z
, and t
1
1
1
1
1
1
LOW and CE
LOW and CE
HIGH and CE
LOW and CE
HIGH and CE
LOW and CE
HZWE
[13, 14]
transitions are measured when the outputs enter a high impedance state.
2
2
2
2
2
2
[15, 16]
[15]
[15]
[15, 16]
HIGH to Data Valid
HIGH to Low-Z
HIGH to Power Up
HIGH to Write End
LOW to High-Z
LOW to Power Down
HZCE
[15]
is less than t
[15, 16]
OL
/I
OH
Description
as shown in
LZCE
[15]
[15, 16]
, t
HZBE
“AC Test Loads and Waveforms” on page
is less than t
1
= V
IL
, BHE or BLE or both = V
LZBE
, t
HZOE
is less than t
IL
, and CE
LZOE
application note AN13842
, and t
4.
2
= V
CY62167E MoBL
Min
IH
HZWE
45
10
10
10
45
35
35
35
35
25
10
5
0
0
0
0
. All signals must be active to initiate
45 ns
is less than t
CC
(typ)/2, input pulse levels
Max
45
45
22
18
18
45
45
18
18
for further clarification.
LZWE
Page 5 of 12
for any device.
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
®
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