參數(shù)資料
型號: HM62V16256CI
廠商: Hitachi,Ltd.
英文描述: Wide Temperature Range Version4 M SRAM (256-kword x 16-bit)
中文描述: 寬溫版本4 M的SRAM(256 - KWord的x 16位)
文件頁數(shù): 9/18頁
文件大?。?/td> 77K
代理商: HM62V16256CI
HM62V16256CI Series
9
Write Cycle
HM62V16256CI
-7
Parameter
Symbol
Min
Max
Unit
Notes
Write cycle time
t
WC
t
AW
t
CW
t
WP
t
BW
t
AS
t
WR
t
DW
t
DH
t
OW
t
OHZ
t
WHZ
70
ns
Address valid to end of write
60
ns
Chip selection to end of write
60
ns
5
Write pulse width
LB
,
UB
valid to end of write
50
ns
4
55
ns
Address setup time
0
ns
6
Write recovery time
0
ns
7
Data to write time overlap
30
ns
Data hold from write time
0
ns
Output active from end of write
5
ns
2
Output disable to output in High-Z
0
25
ns
1, 2
Write to output in high-Z
Notes: 1. t
, t
, t
and t
are defined as the time at which the outputs achieve the open circuit
conditions and are not referred to output voltage levels.
2. This parameter is sampled and not 100% tested.
3. At any given temperature and voltage condition, t
HZ
max is less than t
LZ
min both for a given device
and from device to device.
4. A write occures during the overlap of a low
CS1
, a high CS2, a low
WE
and a low
LB
or a low
UB
.
A write begins at the latest transition among
CS1
going low, CS2 going high,
WE
going low and
LB
going low or
UB
going low. A write ends at the earliest transition among
CS1
going high, CS2
going low,
WE
going high and
LB
going high or
UB
going high. t
WP
is measured from the beginning
of write to the end of write.
5. t
CW
is measured from the later of
CS1
going low or CS2 going high to the end of write.
6. t
AS
is measured from the address valid to the beginning of write.
7. t
is measured from the earliest of
CS1
or
WE
going high or CS2 going low to the end of write
cycle.
0
25
ns
1, 2
相關(guān)PDF資料
PDF描述
HM62V16256CLTTI-7 Wide Temperature Range Version4 M SRAM (256-kword x 16-bit)
HM62V16256CLBP-5 4 M SRAM (256-kword x16-bit)
HM62V16256CLBP-5SL 4 M SRAM (256-kword x16-bit)
HM62V16256CLBP-7 4 M SRAM (256-kword x16-bit)
HM62V16256CLBP-7SL 4 M SRAM (256-kword x16-bit)
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