參數(shù)資料
型號: CY7C017AV-25JC
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: 32K X 9 DUAL-PORT SRAM, 25 ns, PQCC68
封裝: PLASTIC, LCC-68
文件頁數(shù): 9/20頁
文件大?。?/td> 301K
代理商: CY7C017AV-25JC
CY7C138AV/144AV/006AV
CY7C139AV/145AV/016AV
CY7C007AV/017AV
Document #: 38-06051 Rev. *A
Page 9 of 20
Switching Waveforms
Notes:
24. R/W is HIGH for read cycles.
25. Device is continuously selected CE = V
IL
. This waveform cannot be used for semaphore reads.
26. OE = V
.
27. Address valid prior to or coincident with CE transition LOW.
28. To access RAM, CE = V
IL
, SEM = V
IH
. To access semaphore, CE = V
IH
, SEM = V
IL
.
t
RC
t
AA
t
OHA
DATA VALID
PREVIOUS DATA VALID
DATA OUT
ADDRESS
t
OHA
Read Cycle No. 1 (Either Port Address Access)
[24, 25, 26]
t
ACE
t
LZOE
t
DOE
t
HZOE
t
HZCE
DATA VALID
t
LZCE
t
PU
t
PD
I
SB
I
CC
DATA OUT
OE
CE
CURRENT
Read Cycle No. 2 (Either Port CE/OE Access)
[24, 27, 28]
DATA OUT
t
RC
ADDRESS
t
AA
t
OHA
CE
t
LZCE
t
ABE
t
HZCE
t
ACE
t
LZCE
Read Cycle No. 3 (Either Port)
[24, 26, 27, 28]
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