IDT70261L20PF IDT, Integrated Device Technology Inc, IDT70261L20PF Datasheet - Page 11

• Manufacturer Part Number: IDT70261L20PF
• Description: IC SRAM 256KBIT 20NS 100TQFP
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT70261L20PF

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 256K (16K x 16)
• Speed: 20ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 70261L20PF

AC Electrical Characteristics Over the
Operating Temperature and Supply Voltage Range
NOTES:
1. Port-to-port delay through RAM cells from writing port to reading port, refer to "Timing Wave form of Write with Port-to-Port Read and BUSY (M/S = V
2. To ensure that the earlier of the two ports wins.
3. t
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 numbers indicates power rating (S or L).
PORT-TO-PORT DELAY TIMING
PORT-TO-PORT DELAY TIMING
BUSY TIMING (M/S=V
t
t
t
t
t
t
t
BUSY TIMING (M/S=V
t
t
t
t
BUSY TIMING (M/S=V
t
t
t
t
t
t
t
BUSY TIMING (M/S=V
t
t
t
t
BAA
BDA
BAC
BDC
APS
BDD
WH
WB
WH
WDD
DDD
BAA
BDA
BAC
BDC
APS
BDD
WH
WB
WH
WDD
DDD
IDT70261S/L
High-Speed 16K x 16 Dual-Port Static RAM with Interrupt
Symbol
Symbol
BDD
is a calculated parameter and is the greater of 0, t
BUSY Access Time from Address Match
BUSY Disable Time from Address Not Matched
BUSY Acce ss Time from Chip Enable Low
BUSY Acce ss Time from Chip Enable High
Arbitration Priority Set-up Time
BUSY Disable to Valid Data
Write Hold After BUSY
BUSY Input to Write
Write Hold After BUSY
Write Pulse to Data Delay
Write Data Valid to Read Data Delay
BUSY Access Time from Address Match
BUSY Disable Time from Address Not Matched
BUSY Acce ss Time from Chip Enable Low
BUSY Acce ss Time from Chip Enable High
Arbitration Priority Set-up Time
BUSY Disable to Valid Data
Write Hold After BUSY
BUSY Input to Write
Write Hold After BUSY
Write Pulse to Data Delay
Write Data Valid to Read Data Delay
IH
IL
IH
IL
)
)
)
)
(4)
(4)
(5)
(5)
(5)
(5)
(1)
(1)
(3)
(3)
Parameter
(2)
(2)
(1)
(1)
WDD
Parameter
– t
WP
(actual), or t
6.42
DDD
11
– t
DW
(actual).
Min.
____
____
____
____
____
____
____
12
12
Com'l Only
5
0
70261X15
Industrial and Commercial Temperature Ranges
Max.
____
____
____
____
15
15
15
15
18
30
25
(6,7)
Min.
Min.
____
____
____
____
____
____
____
____
____
____
____
____
____
____
15
15
25
25
Com'l & Ind
5
0
Com'l Only
5
0
70261X20
70261X35
Max.
Max.
____
____
____
____
____
____
____
____
20
20
20
17
30
45
30
20
20
20
20
35
60
45
Min.
Min.
____
____
____
____
____
____
____
____
____
____
____
____
____
____
17
17
25
25
Com'l & Ind
5
0
Com'l Only
5
0
70261X25
70261X55
Max.
Max.
____
____
____
____
____
____
____
____
20
20
20
17
30
50
35
45
40
40
35
40
80
65
IH
3039 tbl 14a
3039 tbl 14b
)".
Unit
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns