參數(shù)資料
型號(hào)： UPD4218165L
廠商： NEC Corp.
英文描述： 3.3 V OPERATION 16 M-BIT DYNAMIC RAM 1 M-WORD BY 16-BIT, EDO, BYTE READ/WRITE MODE
中文描述： 3.3 V工作16 m位動(dòng)態(tài)隨機(jī)存儲(chǔ)器1個(gè)M字由16位，江戶，字節(jié)讀/寫(xiě)模式
文件頁(yè)數(shù)： 7/48頁(yè)
文件大?。?/td> 319K
代理商： UPD4218165L
μ
PD42S18165L, 4218165L
7
Cautions when using the hyper page mode (EDO)
1.
CAS access should be used to operate t
HPC
at the MIN. value.
2.
To make I/Os to Hi-Z in read cycle, it is necessary to control RAS, CAS, WE, OE as follows. The effective
specification depends on the state of each signal.
(1) Both RAS and CAS are inactive (at the end of read cycle)
WE: inactive, OE: active
t
OFC
is effective when RAS is inactivated before CAS is inactivated.
t
OFR
is effective when CAS is inactivated before RAS is inactivated.
The slower of t
OFC
and t
OFR
becomes effective.
(2) Both RAS and CAS are active or either RAS or CAS is active (in read cycle)
WE, OE: inactive ····· t
OEZ
is effective.
Both RAS and CAS are inactive or RAS is active and CAS is inactive (at the end of read cycle)
WE, OE: active and either t
RRH
or t
RCH
must be met ····· t
WEZ
and t
WPZ
are effective.
The faster of t
OEZ
and t
WEZ
becomes effective.
The faster of (1) and (2) becomes effective.
3.
In read cycle, the effective specification depends on the state of CAS signal when controlling data output
with the OE signal.
(1) CAS: inactive, OE: active ····· t
CHO
is effective.
(2) CAS, OE: active ····· t
OCH
is effective.
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PDF描述
UPD42S18165L 3.3 V OPERATION 16 M-BIT DYNAMIC RAM 1 M-WORD BY 16-BIT, EDO, BYTE READ/WRITE MODE
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD4218165LE-50 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:x16 EDO Page Mode DRAM
UPD4218165LE-60 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:x16 EDO Page Mode DRAM
UPD4218165LE-70 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:x16 EDO Page Mode DRAM
UPD4218165LG5-A50-7JF 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:x16 EDO Page Mode DRAM
UPD4218165LG5-A60 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:x16 EDO Page Mode DRAM
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