參數(shù)資料
型號(hào): CYD04S72V-167BBC
廠商: CYPRESS SEMICONDUCTOR CORP
元件分類: DRAM
英文描述: FLEx72 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM
中文描述: 64K X 72 DUAL-PORT SRAM, 4 ns, PBGA484
封裝: 23 X 23 MM, 1 MM, ROHS COMPLIANT, MO-192, FBGA-484
文件頁(yè)數(shù): 21/26頁(yè)
文件大?。?/td> 470K
代理商: CYD04S72V-167BBC
PRELIMINARY
CYD04S72V
CYD09S72V
CYD18S72V
Document #: 38-06069 Rev. *D
Page 21 of 26
Left_Port (L_Port) Write to Right_Port (R_Port) Read
[44, 45, 46]
Notes:
44. CE
= OE = ADS = CNTEN = BE0 – BE7 = LOW; CE
= CNTRST = MRST = CNT/MSK = HIGH.
45. This timing is valid when one port is writing, and other port is reading the same location at the same time. If t
CCS
is violated, indeterminate data will be Read out.
46. If t
CCS
< minimum specified value, then R_Port will Read the most recent data (written by L_Port) only (2 * t
CYC2
+ t
) after the rising edge of R_Port's clock.
If t
CCS
> minimum specified value, then R_Port will Read the most recent data (written by L_Port) (t
CYC2
+ t
CD2
) after the rising edge of R_Port's clock.
Switching Waveforms
(continued)
t
SA
t
HA
t
SW
t
HW
t
CH2
t
CL2
t
CYC2
CLK
L
R/W
L
A
n
D
n
t
CKHZ
t
HD
t
SA
A
n
t
HA
Q
n
t
DC
t
CCS
t
SD
t
CKLZ
t
CH2
t
CL2
t
CYC2
t
CD2
L_PORT
ADDRESS
L_PORT
DATA
IN
CLK
R
R/W
R
R_PORT
ADDRESS
R_PORT
DATA
OUT
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CYD09S72V-133BBC FLEx72 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM
CYD09S72V-133BBI FLEx72 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM
CYD09S72V-167BBC FLEx72 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM
CYD18S72V-100BBC FLEx72 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM
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