cy62148e Cypress Semiconductor Corporation., cy62148e Datasheet - Page 5

• Manufacturer Part Number: cy62148e
• Description: 4-mbit 512k X 8 Static Ram
• Manufacturer: Cypress Semiconductor Corporation.

Switching Characteristics
Notes
Document #: 38-05442 Rev. *F
Read Cycle
t
t
t
t
t
t
t
t
t
t
t
Write Cycle
t
t
t
t
t
t
t
t
t
t
12. Test conditions for all parameters other than tri-state parameters assume signal transition time of 3 ns or less, timing reference levels of 1.5V, input pulse levels
13. At any given temperature and voltage condition, t
14. t
15. The internal write time of the memory is defined by the overlap of WE, CE = V
RC
AA
OHA
ACE
DOE
LZOE
HZOE
LZCE
HZCE
PU
PD
WC
SCE
AW
HA
SA
PWE
SD
HD
HZWE
LZWE
of 0 to 3V, and output loading of the specified I
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
Parameter
, t
HZCE
, and t
[15]
HZWE
transitions are measured when the outputs enter a high impedance state.
Read Cycle Time
Address to Data Valid
Data Hold from Address Change
CE LOW to Data Valid
OE LOW to Data Valid
OE LOW to LOW Z
OE HIGH to High Z
CE LOW to Low Z
CE HIGH to High Z
CE LOW to Power up
CE HIGH to Power down
Write Cycle Time
CE LOW to Write End
Address Setup to Write End
Address Hold from Write End
Address Setup to Write Start
WE Pulse Width
Data Setup to Write End
Data Hold from Write End
WE LOW to High-Z
WE HIGH to Low-Z
(Over the Operating Range)
Description
OL
/I
HZCE
[13]
OH
[13, 14]
[13]
[13, 14]
[13, 14]
[13]
as shown in the
is less than t
LZCE
“AC Test Loads and Waveforms” on page
, t
HZOE
[12]
Min
45
10
10
45
35
35
35
25
10
is less than t
5
0
0
0
0
IL
. All signals must be ACTIVE to initiate a write and any of these signals can
45 ns
LZOE
, and t
Max
45
45
22
18
18
45
18
HZWE
is less than t
4.
Min
55
10
10
55
40
40
40
25
10
5
0
0
0
0
CY62148E MoBL
LZWE
55 ns
for any given device.
[2]
Max
55
55
25
20
20
55
20
Page 5 of 10
Unit
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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