MSM54V25632A-XXAGBK4 查看數據表（PDF） - Oki Electric Industry

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MSM54V25632A-XXAGBK4

131,072-Word x 32-Bit x 2-Bank Synchronous Graphics RAM

Oki Electric Industry 

¡ Semiconductor

Block Write Function

Color Register

I/O Mask

Column Mask

11001110

11111010

10010011

8 Column ¥ 8 DQ

Column 7

Column 6

Column 5

Column 4

Column 3

Column 2

Column 1

Column 0

11001*1*

11001*1*

********

********

11001*1*

********

********

11001*1*

MSM54V25632A

Note : Location "*" can not be loaded.

Remark: 1. This diagram shows only for DQ0 - 7. The other DQ is similar as this.

Column Mask

DQ0 - 7 : Column Mask for DQ0 - 7

DQ8 - 15 : Column Mask for DQ8 - 15

DQ16 - 23: Column Mask for DQ16 - 23

DQ24 - 31: Column Mask for DQ24 - 31

Write per Bit

Mask data = Mask Register + DQMi

DQMi is prior to data of Mask Register.

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