Datasheet > MSM548332

MSM548332

更新时间： 2022-12-13 04:56:09

品牌	Logo	应用领域
冲电气 - OKI		存储
页数	文件大小	规格书
23页	244K
描述
278,400-Word x 12-Bit Field Memory

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MSM548332 数据手册

¡ Semiconductor

MSM548332

WRITE RELATED

WCLK : Write Clock

WCLKisawritecontrolclockinput. SynchronizedwithWCLK'srisingedge, serialwriteaccessinto

write ports is executed when WE is high and IE is high.

AccordingtoWCLKclocks,theinternalcounterfortheserialaddressisincrementedautomatically.

Inawriteaddresssetcycle, allthewriteaddresseswhichwereinputfromWXADarestoredinto

internal address registers synchronously with WCLK. In this address set cycle, WADE/RX must be

held high and WR/TR must be held low.

In the write address reset cycle, various write address reset modes can be set synchronously with

WCLK. These reset cycles replace complicated serial address control with simple reset cycle control

which requires only one WCLK cycle. It greatly facilitates memory access.

WE : Write Enable

WE is a write enable clock input. WE enables or disables both internal write address pointers and

data-inbuffers.WhenWEishigh,theinternalwriteaddresspointerisincrementedsynchronously

with WCLK. When WE is low, even if WCLK is input, the internal write address pointer is not

incremented.

DIN0-11 : Data-Ins

DIN0-11 are serial data-ins. Corresponding data-in-buffers are masked by IE.

WR/TR : Write Reset/Write Transfer

WR/TR is a write reset control input. Write address reset modes are defined when WR/TR level is

high according to the "FUNCTION TABLE for write".

When the write operation on a line is terminated, be sure to perform a write transfer operation by

WR/TR in order to store the written data in the write register to corresponding memory cells.

WXINC : Write X Address Increment

WXINCisawriteXaddress(orlineaddress)incrementcontrolinput.Inthewriteaddressresetcycle,

defined by WR/TR high, the write X address (or line address) is incremented when WXINC and

WADE/RX are high.

WADE/RX : Write Address Enable/Write X Address Reset Logic Function

WADE/RX is a dual functional control input. WADE, one of the two functions of WADE/RX, is a

write address enable input. In the write address reset cycle, defined by WR/TR high, X address (or

lineaddress)inputfromWXADislatchedintointernalwriteXaddressregistersynchronouslywith

WCLK.

WXAD : Write X Address

WXAD is a write X address (or line address) input. WXAD specifies line address. 9 bits of write X

address data are input serially from WXAD.

IE : Input Enable

IE is an input enable which controls the write operation. When IE is high, the input operation is

enabled. When IE is low, the write operation is masked. When WE signal is high, and IE low, the

internalserialwriteaddresspointerisincrementedontherisingedgeofWCLKwithoutactualwrite

operations. This function facilitates picture in picture function in a TV system.

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与MSM548332相关器件

型号	品牌	描述	获取价格	数据表
MSM548333	OKI	240,384-Word x 8-bit + 240,384-Word x 4-bit Triple Port type Field Memory	获取价格
MSM548512D-10GS	OKI	Pseudo Static RAM, 512KX8, 100ns, CMOS, PDSO32, 0.525 INCH, PLASTIC, SSOP-32	获取价格
MSM548512D-10RS	OKI	Pseudo Static RAM, 512KX8, 100ns, CMOS, PDIP32, 0.600 INCH, PLASTIC, DIP-32	获取价格
MSM548512D-12GS	OKI	Pseudo Static RAM, 512KX8, 120ns, CMOS, PDSO32, 0.525 INCH, PLASTIC, SSOP-32	获取价格
MSM548512D-12RS	OKI	Pseudo Static RAM, 512KX8, 120ns, CMOS, PDIP32, 0.600 INCH, PLASTIC, DIP-32	获取价格
MSM548512D-80RS	OKI	Pseudo Static RAM, 512KX8, 80ns, CMOS, PDIP32, 0.600 INCH, PLASTIC, DIP-32	获取价格

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