IDT71342LA20J IDT, Integrated Device Technology Inc, IDT71342LA20J Datasheet - Page 10

• Manufacturer Part Number: IDT71342LA20J
• Description: IC SRAM 32KBIT 20NS 52PLCC
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT71342LA20J

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 32K (4K 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: 71342LA20J

NOTE:
1. CE = V
Timing Waveform of Semaphore Condition
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 the point where R/W "
4. If t
Timing Waveform of Semaphore Read After Write Timing, Either Side
DATA
A
IDT71342SA/LA
High-Speed 4K x 8 Dual-Port Static RAM with Semaphore
0
SEM
R/W
- A
0R
OE
SPS
= D
2
0
is violated, the semaphore will fall positively to one side or the other, but there is no guarantee which side will obtain the flag.
IH
0L
for the duration of the above timing (both write and read cycle).
= V
SIDE
SIDE
IL
, CE
(2)
(2)
R
"A"
"B"
= CE
L
= V
t
A
A
AS
IH
0"A"
0"B"
, Semaphore Flag is released from both sides (reads as ones from both sides) at cycle start.
SEM
t
SEM
R/W
R/W
AW
- A
- A
VALID ADDRESS
2"B"
2"A"
"A"
"A"
"
"B"
B
t
"
t
WP
EW
DATA
Write Cycle
t
DW
A
" or SEM "
IN
t
WR
VALID
t
DH
A
" goes HIGH until R/W "
MATCH
MATCH
6.42
t
10
SWRD
t
SPS
B
" or SEM "
(1,3,4)
VALID ADDRESS
t
Industrial and Commercial Temperature Ranges
SAA
B
" goes HIGH.
(Read Cycle)
t
SOP
Test Cycle
t
SOP
t
ACE
2721 drw 13
t
AOE
DATA
VALID
OUT
t
OH
2721 drw 12
(1)