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70V631S10PRFG Datasheet(PDF) 10 Page - Integrated Device Technology

Part # 70V631S10PRFG
Description  HIGH-SPEED 3.3V 256K x 18 ASYNCHRONOUS DUAL-PORT STATIC RAM
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

70V631S10PRFG Datasheet(HTML) 10 Page - Integrated Device Technology

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IDT70V631S
High-Speed 3.3V 256K x 18 Asynchronous Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
10
AC Electrical Characteristics Over the
Operating Temperature and Supply Voltage Range(5)
NOTES:
1. Transition is measured 0mV from Low or High-impedance voltage with Output Test Load (Figure 2).
2. This parameter is guaranted 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.
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. These values are valid regardless of the power supply level selected for I/O and control signals (3.3V/2.5V). See page 5 for details.
AC Electrical Characteristics Over the
Operating Temperature and Supply Voltage(5)
Symbol
Parameter
70V631S10
Com'l Only
70V631S12
Com'l
& Ind
70V631S15
Com'l
Unit
Min.
Max.
Min.
Max.
Min.
Max.
READ CYCLE
tRC
Read Cycle Time
10
____
12
____
15
____
ns
tAA
Address Access Time
____
10
____
12
____
15
ns
tACE
Chip Enable Access Time(3)
____
10
____
12
____
15
ns
tABE
Byte Enable Access Time(3)
____
5
____
6
____
7ns
tAOE
Output Enable Access Time
____
5
____
6
____
7ns
tOH
Output Hold from Address Change
3
____
3
____
3
____
ns
tLZ
Output Low-Z Time(1,2)
0
____
0
____
0
____
ns
tHZ
Output High-Z Time(1,2)
0
4060
8
ns
tPU
Chip Enable to Power Up Time(2)
0
____
0
____
0
____
ns
tPD
Chip Disable to Power Down Time(2)
____
10
____
10
____
15
ns
tSOP
Semaphore Flag Update Pulse (OE or SEM)
____
4
____
6
____
8ns
tSAA
Semaphore Address Access Time
3
10
3
12
3
20
ns
5622 tbl 12
Symbol
Parameter
70V631S10
Com'l Only
70V631S12
Com'l
& Ind
70V631S15
Com'l
Unit
Min.
Max.
Min.
Max.
Min.
Max.
WRITE CYCLE
tWC
Write Cycle Time
10
____
12
____
15
____
ns
tEW
Chip Enable to End-of-Write(3)
8
____
10
____
12
____
ns
tAW
Address Valid to End-of-Write
8
____
10
____
12
____
ns
tAS
Address Set-up Time(3)
0
____
0
____
0
____
ns
tWP
Write Pulse Width
8
____
10
____
12
____
ns
tWR
Write Recovery Time
0
____
0
____
0
____
ns
tDW
Data Valid to End-of-Write
6
____
8
____
10
____
ns
tDH
Data Hold Time(4)
0
____
0
____
0
____
ns
tWZ
Write Enable to Output in High-Z(1,2)
____
4
____
4
____
4ns
tOW
Output Active from End-of-Write(1,2,4)
0
____
0
____
0
____
ns
tSWRD
SEM
Flag Write to Read Time
5
____
5
____
5
____
ns
tSPS
SEM
Flag Contention Window
5
____
5
____
5
____
ns
5622 tbl 13


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