IDT71421SA20J IDT, Integrated Device Technology Inc, IDT71421SA20J Datasheet - Page 12

• Manufacturer Part Number: IDT71421SA20J
• Description: IC SRAM 16KBIT 20NS 52PLCC
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT71421SA20J

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 16K (2K x 8)
• Speed: 20ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 52-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 71421SA20J

DATA
Timing Waveform of Write with Port-to-Port Read and BUSY
NOTES:
1. To ensure that the earlier of the two ports wins. t
2. CE
3. OE = V
4. All timing is the same for the left and right ports. Port "A" may be either the left or right port. Port "B" is opposite from port "A".
Timing Waveform of Write with BUSY
NOTES:
1. t
2. BUSY is asserted on port "B" blocking R/W
3. t
4. All timing is the same for the left and right ports. Port "A" may be either the left or right port. Port "B" is opposite from port "A".
IDT71321SA/LA and IDT71421SA/LA
High Speed 2K x 8 Dual-Port Static RAM with Interrupts
DATA
ADDR
BUSY
WH
WB
ADDR
L
OUT"B"
must be met for both BUSY input (IDT71421, slave) or output (IDT71321, Master).
R/W
is only for the slave version (IDT71421).
= CE
IN "A"
IL
"B"
"B"
"A"
for the reading port.
"A"
R
= V
IL
BUSY
R/W
R/W
"B"
"B"
"A"
t
APS
(1)
"B"
, until BUSY
APS
is ignored for Slave (IDT71421).
"B"
t
WB
goes HIGH.
t
BAA
(3)
MATCH
t
WC
t
6.42
(2)
WP
12
(4)
t
WP
MATCH
t
VALID
Industrial and Commercial Temperature Ranges
DW
t
t
WDD
WH
t
BDA
(1)
t
DDD
2691 drw 11
t
DH
t
BDD
(2,3,4)
,
VALID
2691 drw 10