參數(shù)資料
型號: CY62128E
廠商: Cypress Semiconductor Corp.
英文描述: 1-Mbit (128K x 8) Static RAM
中文描述: 1兆位(128K的× 8)靜態(tài)RAM
文件頁數(shù): 5/11頁
文件大?。?/td> 862K
代理商: CY62128E
Document #: 38-05485 Rev. *E
Page 5 of 11
CY62128E MoBL
Switching Characteristics
(Over the Operating Range)
[12]
Parameter
Description
45 ns (Ind’l/Auto-A)
55 ns (Auto-E)
Unit
Min
Max
Min
Max
Read Cycle
t
RC
t
AA
t
OHA
t
ACE
t
DOE
t
LZOE
t
HZOE
t
LZCE
t
HZCE
t
PU
t
PD
Write Cycle
[15]
Read Cycle Time
45
55
ns
Address to Data Valid
45
55
ns
Data Hold from Address Change
10
10
ns
CE
1
LOW and CE
2
HIGH to Data Valid
OE LOW to Data Valid
OE LOW to Low-Z
[13]
OE HIGH to High-Z
[13, 14]
CE
1
LOW and CE
2
HIGH to Low-Z
[13]
CE
1
HIGH or CE
2
LOW to High-Z
[13, 14]
CE
1
LOW and CE
2
HIGH to Power Up
CE
1
HIGH or CE
2
LOW to Power Down
45
55
ns
22
25
ns
5
5
ns
18
20
ns
10
10
ns
18
20
ns
0
0
ns
45
55
ns
t
WC
t
SCE
t
AW
Write Cycle Time
45
55
ns
CE
1
LOW and CE
2
HIGH to Write End
Address Setup to Write End
35
40
ns
35
40
ns
t
HA
t
SA
t
PWE
t
SD
t
HD
t
HZWE
t
LZWE
Address Hold from Write End
0
0
ns
Address Setup to Write Start
0
0
ns
WE Pulse Width
35
40
ns
Data Setup to Write End
25
25
ns
Data Hold from Write End
WE LOW to High-Z
[13, 14]
WE HIGH to Low-Z
[13]
0
0
ns
18
20
ns
10
10
ns
Notes
12.Test conditions for all parameters other than tri-state parameters assume signal transition time of 3ns (1V/ns) or less, timing reference levels of 1.5V, input pulse
levels of 0 to 3V, and output loading of the specified I
OL
/I
as shown in the
“AC Test Loads and Waveforms” on page 4
.
13.At any given temperature and voltage condition, t
is less than t
, t
is less than t
, and t
HZWE
is less than t
LZWE
for any given device.
14.t
, t
, and t
transitions are measured when the outputs enter a high impedance state.
15.The internal Write time of the memory is defined by the overlap of WE, CE
= V
. All signals must be ACTIVE to initiate a write and 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.
[+] Feedback
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