參數(shù)資料
型號(hào): CYD18S72V
廠商: Cypress Semiconductor Corp.
英文描述: FLEx72 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM(FLEx72 3.3V 64K/128K/256K x 72同步雙端口RAM)
中文描述: FLEx72 3.3 64K/128K/256K × 72同步雙口RAM(FLEx72 3.3 64K/128K/256K × 72同步雙端口RAM)的
文件頁(yè)數(shù): 20/25頁(yè)
文件大?。?/td> 677K
代理商: CYD18S72V
Document #: 38-06069 Rev. *I
Page 20 of 25
CYD04S72V
CYD09S72V
CYD18S72V
Readback State of Address Counter or Mask Register
[41, 42, 43, 44]
Notes:
41.CE
= OE = BE0 – BE7 = LOW; CE
= R/W = CNTRST = MRST = HIGH.
42.Address in output mode. Host must not be driving address bus after t
CKLZ
in next clock cycle.
43.Address in input mode. Host can drive address bus after t
.
44.An * is the internal value of the address counter (or the mask register depending on the CNT/MSK level) being Read out on the address lines.
Switching Waveforms
(continued)
CNTEN
CLK
t
CH2
t
CL2
t
CYC2
ADDRESS
A
0
–A
17
ADS
A
n
Q
x-2
Q
x-1
Q
n
t
SA
t
HA
t
SAD
t
HAD
t
SCN
t
HCN
LOAD
EXTERNAL
ADDRESS
t
CD2
INTERNAL
ADDRESS
A
n+1
A
n+2
A
n
t
CKHZ
DATA
OUT
A
n*
Q
n+3
Q
n+1
Q
n+2
A
n+3
A
n+4
t
CKLZ
t
CA2
or t
CM2
READBACK
COUNTER
INTERNAL
ADDRESS
INCREMENT
EXTERNAL
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CYD09S72V FLEx72 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM(FLEx72 3.3V 64K/128K/256K x 72同步雙端口RAM)
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CYD18S72V-100BBXC 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:FLEx72⑩ 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM
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