參數(shù)資料
型號(hào): MB8117800A-60
廠商: Electronic Theatre Controls, Inc.
英文描述: 2 M X 8 BIT FAST PAGE MODE DYNAMIC RAM
中文描述: 2的MX 8位快速頁(yè)面模式動(dòng)態(tài)隨機(jī)存儲(chǔ)器
文件頁(yè)數(shù): 16/27頁(yè)
文件大?。?/td> 580K
代理商: MB8117800A-60
16
MB8117800A-60/-70
A
0
to A
10
CAS
V
IH
V
IL
V
IH
V
IL
WE
V
OH
V
OL
RAS
V
IH
V
IL
V
IH
V
IL
DQ
(Output)
V
IH
V
IL
DQ
(Input)
“H” or “L”
DESCRIPTION
The read-modify-write cycle is executed by changing WE from High to Low after the data appears on the DQ pins. In the read-modify-
write cycle, OE must be changed from Low to High after the memory access time.
Fig. 8 – READ-MODIFY-WRITE CYCLE
V
IH
V
IL
OE
ROW
ADD
COL
ADD
VALID
DATA IN
VALID
HIGH-Z
t
RWC
t
RAS
t
AR
t
CRP
t
RCD
t
RP
t
RAD
t
ASR
t
RAH
t
ASC
t
CAH
t
RWD
t
RCS
t
AWD
t
CWD
t
CWL
t
RWL
t
WP
t
DH
t
DS
t
DZC
t
OED
t
CAC
t
AA
t
RAC
HIGH-Z
t
ON
t
OEA
t
ON
t
OEH
t
OEZ
t
DZO
t
OH
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