參數(shù)資料
型號(hào)： μPD4265165
廠商： NEC Corp.
英文描述： 64 M-Bit Dynamic Ram(64M 動(dòng)態(tài)存儲(chǔ)器)
中文描述： 64 m位動(dòng)態(tài)隨機(jī)存儲(chǔ)器（6400動(dòng)態(tài)存儲(chǔ)器）
文件頁(yè)數(shù)： 5/48頁(yè)
文件大?。?/td> 535K
代理商： ΜPD4265165
μ
PD42S65165, 4265165
5
Input/Output Pin Functions
The
μ
PD42S65165, 4265165 have input pins RAS, UCAS, LCAS, WE, OE, A0 to A11 and input/output pins
I/O1 to I/O16.
Pin name
RAS
(Row address strobe)
UCAS, LCAS
(Upper, Lower column
address strobe)
A0 to A11
(Address inputs)
WE
(Write enable)
OE
(Output enable)
I/O1 to I/O16
(Data inputs/outputs)
Input/Output
Function
Input
RAS activates the sense amplifier by latching a row address and selecting a
corresponding word line.
It refreshes memory cell array of one line selected by the row address.
It also selects the following function.
CAS before RAS self refresh, CAS before RAS refresh
Input
UCAS, LCAS activates data input/output circuit by latching column address
and selecting a digit line connected with the sense amplifier.
Input
Address bus.
Input total 22-bit of address signal, upper 12-bit and lower 10-bit in sequence
(address multiplex method).
Therefore, one word is selected from 4,194,304-word by 16-bit memory cell
array.
In actual operation, latch row address by specifying row address and
activating RAS.
Then, switch the address bus to column address and activate CAS.
Each address is taken into the device when RAS and CAS are activated.
Therefore, the address input setup time (t
ASR
, t
ASC
) and hold time (t
RAH
, t
CAH
)
are specified for the activation of RAS and CAS.
Input
Write control signal.
Write operation is executed by activating RAS, CAS and WE.
Input
Read control signal.
Read operation can be executed by activating RAS, CAS and OE.
If WE is activated during read operation, OE is to be ineffective in the
device.
Therefore, read operation cannot be executed.
Input/Output
16-bit data bus.
I/O1 to I/O16 are used to input/output data.
相關(guān)PDF資料
PDF描述
μPD42S65165 64 M-Bit Dynamic Ram(64M 動(dòng)態(tài)存儲(chǔ)器)
μPD42S17805 16M- bit CMOS dynamic RAMs(16M CMOS 動(dòng)態(tài)RAM)
μPD4217805 16 M BIT DYNAMIC RAM 2 M WORD BY 8 BIT,EDO
μPD42S65405 16,777,216 Words by 4 Bits CMOS Dynamic RAMs(64M 動(dòng)態(tài)RAM)
μPD4264405 16,777,216 Words by 4 Bits CMOS Dynamic RAMs(64M 動(dòng)態(tài)RAM)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PD42-CAMG13 制造商:P-TEC 制造商全稱(chēng):P-tec Corporation 功能描述:Three Digit 7 Segment 0.56” Display
PD42-CAMO12 制造商:P-TEC 制造商全稱(chēng):P-tec Corporation 功能描述:Three Digit 7 Segment 0.56” Display
PD42-CAMR21 制造商:P-TEC 制造商全稱(chēng):P-tec Corporation 功能描述:Three Digit 7 Segment 0.56” Display
PD42-CAMR24 制造商:P-TEC 制造商全稱(chēng):P-tec Corporation 功能描述:Three Digit 7 Segment 0.56” Display
PD42-CAMY01 制造商:P-TEC 制造商全稱(chēng):P-tec Corporation 功能描述:Three Digit 7 Segment 0.56” Display
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*