IDT7133SA/LA,IDT7143SA/LA
High-Speed 2K x 16 Dual-Port RAM
Military, Industrial and Commercial Temperature Ranges
AC Electrical Characteristics Over the
OperatingTemperatureandSupplyVoltage(6)
7133X20
7133X25
7143X25
Com'l, Ind
& Military
7133X35
7143X35
Com'l, Ind
& Military
7143X20
Com'l Only
Symbol
Parameter
Min.
Max.
Min.
Max.
Min.
Max.
Unit
BUSY TIMING (For MASTER 71V33)
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
t
BAA
BDA
BAC
BDC
WDD
DDD
BDD
APS
WH
20
20
20
17
40
30
20
20
20
20
50
35
30
30
25
25
60
45
ns
ns
ns
ns
ns
ns
ns
ns
ns
BUSY Access Time from Address
BUSY Disable Time from Address
t
t
BUSY Access Time from Chip Enable
BUSY Disable Time from Chip Enable
t
(1)
t
Write Pulse to Data Delay
t
Write Data Valid to Read Data Delay(1)
BUSY Disable to Valid Data(2)
Arbitration Priority Set-up Time(3)
Write Hold After BUSY(5)
t
25
30
35
____
____
____
t
5
5
5
____
____
____
t
20
20
25
BUSY INPUT TIMING (For SLAVE 71V43)
____
____
____
____
____
____
BUSY Input to Write(4)
t
WB
WH
WDD
DDD
0
0
0
ns
ns
ns
t
Write Hold After BUSY(5)
20
20
25
(1)
____
____
____
t
Write Pulse to Data Delay
40
30
50
35
60
45
Write Data Valid to Read Data Delay(1)
ns
____
____
____
t
2746 tbl 12a
7133X45
7133X55
7143X55
Com'l, Ind
& Military
7133X70/90
7143X45
Com'l &
Military
7143X70/90
Com'l &
Military
Symbol
BUSY TIMING (For MASTER 71V33)
Parameter
Min.
Max.
Min.
Max.
Min.
Max.
Unit
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
t
BAA
BDA
BAC
BDC
WDD
DDD
BDD
APS
WH
40
40
30
25
80
55
40
40
35
30
80
55
45/45
45/45
35/35
30/30
90/90
70/70
ns
ns
ns
ns
ns
ns
ns
ns
ns
BUSY Access Time from Address
BUSY Disable Time from Address
t
t
BUSY Access Time from Chip Enable
BUSY Disable Time from Chip Enable
t
(1)
t
Write Pulse to Data Delay
t
Write Data Valid to Read Data Delay(1)
BUSY Disable to Valid Data(2)
Arbitration Priority Set-up Time(3)
Write Hold After BUSY(5)
t
40
40
40/40
____
____
____
t
5
5
5/5
____
____
____
t
30
30
30/30
BUSY INPUT TIMING (For SLAVE 71V43)
____
____
____
____
____
____
BUSY Input to Write(4)
Write Hold After BUSY(5)
t
WB
WH
WDD
DDD
0
0
0/0
ns
ns
ns
t
30
30
30/30
(1)
____
____
____
t
Write Pulse to Data Delay
80
55
80
55
90/90
70/70
Write Data Valid to Read Data Delay(1)
ns
____
____
____
t
2746 tbl 12b
NOTES:
1. Port-to-port delay through RAM cells from writing port to reading port, refer to “Timing Waveform of Write with Port-to-Port Read and Busy".
2. tBDD is calculated parameter and is greater of 0, tWDD - tWP (actual) or tDDD - tDW (actual).
3. To ensure that the earlier of the two ports wins.
4. To ensure that the write cycle is inhibited on port "B" during contention on port "A".
5. To ensure that a write cycle is completed on port "B" after contention on port "A".
6. 'X' in part number indicates power rating (SA or LA).
6.42
10