參數(shù)資料
型號: CY7C006AV-20AC
廠商: CYPRESS SEMICONDUCTOR CORP
元件分類: DRAM
英文描述: 3.3V 4K/8K/16K/32K x 8/9 Dual-Port Static RAM
中文描述: 16K X 8 DUAL-PORT SRAM, 20 ns, PQFP64
封裝: 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, TQFP-64
文件頁數(shù): 11/20頁
文件大小: 301K
代理商: CY7C006AV-20AC
CY7C138AV/144AV/006AV
CY7C139AV/145AV/016AV
CY7C007AV/017AV
Document #: 38-06051 Rev. *A
Page 11 of 20
Notes:
37. CE = HIGH for the duration of the above timing (both write and read cycle).
38. I/O
= I/O
= LOW (request semaphore); CE
= CE
= HIGH.
39. Semaphores are reset (available to both ports) at cycle start.
40. If t
SPS
is violated, the semaphore will definitely be obtained by one side or the other, but which side will get the semaphore is unpredictable.
Switching Waveforms
(continued)
t
SOP
t
SAA
VALID ADRESS
VALID ADRESS
t
HD
DATA
IN
VALID
DATA
OUT
VALID
t
OHA
t
AW
t
HA
t
ACE
t
SOP
t
SCE
t
SD
t
SA
t
PWE
t
SWRD
t
DOE
WRITE CYCLE
READ CYCLE
OE
R/W
I/O
0
SEM
A
0
A
2
Semaphore Read After Write Timing, Either Side
[37]
MATCH
t
SPS
A
0L
A
2L
MATCH
R/W
L
SEM
L
A
0R
A
2R
R/W
R
SEM
R
Timing Diagram of Semaphore Contention
[38, 39, 40]
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CY7C006AV-25JC 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:3.3V 4K/8K/16K/32K x 8/9 Dual-Port Static RAM