IDT70261L20PF IDT, Integrated Device Technology Inc, IDT70261L20PF Datasheet - Page 12

• 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

Timing Waveform of Write with Port-to-Port Read and BUSY (M/S = V
NOTES:
1. To ensure that the earlier of the two ports wins. t
2. CE
3. OE = V
4. If M/S = V
5. All timing is the same for left and right ports. Port "A" may be either the left or right port. Port "B" is the port opposite from port "A".
Timing Waveform of Write with BUSY (M/S = V
NOTES:
1. t
2. BUSY is asserted on port "B" blocking R/W
3. t
DATA
IDT70261S/L
High-Speed 16K x 16 Dual-Port Static RAM with Interrupt
DATA
WH
WB
ADDR
ADDR
BUSY
L
must be met for both BUSY input (SLAVE) and output (MASTER).
is only for the “SLAVE” version.
= CE
R/W
OUT "B"
IN "A"
IL
for the reading port.
R
"A"
"A"
"B"
"B"
IL
= V
(slave), BUSY is an input. Then for this example BUSY
IL.
t
APS
BUSY
(1)
R/W
R/W
"A"
"B"
"B"
"B"
, until BUSY
APS
is ignored for M/S = V
t
WB
"B"
(3)
goes HIGH.
t
BAA
"A"
= V
MATCH
IH
IL
t
6.42
WC
t
and BUSY
(SLAVE).
12
WP
(2)
"B"
input is shown above.
t
WP
Industrial and Commercial Temperature Ranges
t
MATCH
DW
IL
t
WDD
)
VALID
t
WH
(1)
t
3039 drw 12
DDD
(3)
t
BDA
,
t
DH
IH
3039 drw 11
)
t
BDD
(2,4,5)
VALID