IDT7027L35G 查看數據表（PDF） - Integrated Device Technology
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IDT7027L35G Datasheet PDF : 19 Pages
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IDT7027S/L
High-Speed 32K x 16 Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
AC Electrical Characteristics Over the
Operating Temperature and Supply Voltage(5,6)
7027X20
Com'l Only
7027X25
Com'l, Ind
& Military
7027X35
Com'l &
Military
7027X55
Com'l &
Military
Symbol
Parameter
Min. Max. Min. Max. Min. Max. Min. Max. Unit
WRITE CYCLE
tWC
Write Cycle Time
tEW
Chip Enable to End-of-Write(3)
20
____
25
____
35
____
55
____
ns
15
____
20
____
30
____
45
____
ns
tAW
Address Valid to End-of-Write
tAS
Address Set-up Time(3)
15
____
20
____
30
____
45
____
ns
0
____
0
____
0
____
0
____
ns
tWP
Write Pulse Width
15
____
20
____
25
____
40
____
ns
tWR
Write Recovery Time
0
____
0
____
0
____
0
____
ns
tDW
Data Valid to End-of-Write
tHZ
Output High-Z Time(1,2)
tDH
Data Hold Time(4)
tWZ
Write Enable to Output in High-Z(1,2)
tOW
Output Active from End-of-Write(1,2,4)
15
____
15
____
15
____
30
____
ns
____
12
____
15
____
15
____
25
ns
0
____
0
____
0
____
0
____
ns
____
12
____
15
____
15
____
25
ns
0
____
0
____
0
____
0
____
ns
tSWRD
SEM Flag Write to Read Time
5
____
5
____
5
____
5
____
ns
tSPS
SEM Flag Contention Window
5
____
5
____
5
____
5
____
ns
NOTES:
3199 tbl 13
1. Transition is measured 0mV from Low or High-impedance voltage with Output Test Load (Figure 2).
2. This parameter is guaranteed by device characterization, but is not production tested.
3. To access RAM CE= VIL and SEM = VIH. To access semaphore, CE = VIH and SEM = VIL. Either condition must be valid for the entire tEW time. Refer to Chip Enable
Truth Table.
4. The specification for tDH must be met by the device supplying write data to the RAM under all operating conditions. Although tDH and tOW values will vary over voltage
and temperature, the actual tDH will always be smaller than the actual tOW.
5. 'X' in part numbers indicates power rating (S or L).
6. Industrial temperature: for other speeds, packages and powers contact your sales office.
6.942
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