IDT70261L20PF IDT, Integrated Device Technology Inc, IDT70261L20PF Datasheet - Page 10

• 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 Semaphore Read after Write Timing, Either Side
Timing Waveform of Semaphore Write Contention
NOTES:
1. D
2. All timing is the same for left and right ports. Port “A” may be either left or right port. Port “B” is the opposite from port “A”.
3. This parameter is measured from R/W"
4. If t
NOTES:
1. CE = V
2. "DATA
IDT70261S/L
High-Speed 16K x 16 Dual-Port Static RAM with Interrupt
OR
SPS
= D
is not satisfied, there is no guarantee which side will be granted the semaphore flag.
OUT
IH
OL
A
or UB and LB = V
SEM
R/W
VALID" represents all I/O's (I/O
= V
0
I/O
-A
OE
IL
2
0
, CE
SIDE
SIDE
R
= CE
(2)
(2)
L
IH
= V
"B"
for the duration of the above timing (both write and read cycle).
"A"
IH
, or both UB & LB = V
t
VALID ADDRESS
AS
A"
A
A
t
or SEM"
0"A"
0"B"
AW
0
-I/O
SEM
SEM
R/W
R/W
Write Cycle
-A
-A
15
t
) equal to the semaphore value.
t
2"A"
2"B"
A"
EW
WP
"A"
"A"
"B"
"B"
going HIGH to R/W"
DATA
IH
VALID
.
t
t
DW
WR
t
IN
DH
MATCH
t
B"
SWRD
or SEM"
6.42
MATCH
10
B"
VALID ADDRESS
t
t
SOP
going HIGH.
SPS
Read Cycle
t
SAA
t
ACE
Industrial and Commercial Temperature Ranges
t
AOE
DATA
(1,3,4)
VALID
OUT
(2)
3039 drw 10
t
OH
,
3039 drw 09
(1)