參數(shù)資料
型號: IDT70V19L20PF
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: DRAM
英文描述: HIGH-SPEED 3.3V 128K x 9 DUAL-PORT STATIC RAM
中文描述: 128K X 9 DUAL-PORT SRAM, 20 ns, PQFP100
封裝: TQFP-100
文件頁數(shù): 7/17頁
文件大?。?/td> 265K
代理商: IDT70V19L20PF
7
IDT70V19L
High-Speed 3.3V 128K x 9 Dual-Port Static RAM Industrial and Commercial Temperature Ranges
AC Electrical Characteristics Over the
Operating Temperature and Supply Voltage Range
70V19L15
Com'l Only
70V19L20
Com'l
& Ind
Unit
Symbol
Parameter
Min.
Max.
Min.
Max.
READ CYCLE
t
RC
Read Cycle Time
15
____
20
____
ns
t
AA
Address Access Time
____
15
____
20
ns
t
ACE
Chip Enable Access Time
(3)
____
15
____
20
ns
t
AOE
Output Enable Access Time
____
10
____
12
ns
t
OH
Output Hold from Address Change
3
____
3
____
ns
t
LZ
Output Low-Z Time
(1,2)
3
____
3
____
ns
t
HZ
Output High-Z Time
(1,2)
____
10
____
10
ns
t
PU
Chip Enable to Power Up Time
(2)
0
____
0
____
ns
t
PD
Chip Disable to Power Down Time
(2)
____
15
____
20
ns
t
SOP
Semaphore Flag Update Pulse (
OE
or
SEM
)
10
____
10
____
ns
t
SAA
Semaphore Address Access Time
____
15
____
20
ns
4853 tbl 12
NOTES:
1.
2.
3.
4.
Transition is measured 0mV from Low or High-impedance voltage with Output Test Load (Figure 2).
This parameter is guaranted by device characterization, but is not production tested.
To access RAM,
CE
= V
IL
and
SEM
= V
IH
. To access semaphore,
CE
= V
IH
and
SEM
= V
IL
. Either condition must be valid for the entire t
EW
time.
The specification for t
DH
must be met by the device supplying write data to the RAM under all operating conditions. Although t
DH
and t
OW
values will vary over voltage and
temperature, the actual t
DH
will always be smaller than the actual t
OW
.
AC Electrical Characteristics Over the
Operating Temperature and Supply Voltage
Symbol
Parameter
70V19L15
Com'l Only
70V19L20
Com'l
& Ind
Unit
Min.
Max.
Min.
Max.
WRITE CYCLE
t
WC
Write Cycle Time
15
____
20
____
ns
t
EW
Chip Enable to End-of-Write
(3)
12
____
15
____
ns
t
AW
Address Valid to End-of-Write
12
____
15
____
ns
t
AS
Address Set-up Time
(3)
0
____
0
____
ns
t
WP
Write Pulse Width
12
____
15
____
ns
t
WR
Write Recovery Time
0
____
0
____
ns
t
DW
Data Valid to End-of-Write
10
____
15
____
ns
t
HZ
Output High-Z Time
(1,2)
____
10
____
10
ns
t
DH
Data Hold Time
(4)
0
____
0
____
ns
t
WZ
Write Enable to Output in High-Z
(1,2)
____
10
____
10
ns
t
OW
Output Active from End-of-Write
(1,2,4)
0
____
0
____
ns
t
SWRD
SEM
Flag Write to Read Time
5
____
5
____
ns
t
SPS
SEM
Flag Contention Window
5
____
5
____
ns
4853 tbl 13
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