參數(shù)資料
型號: KM4132G271B
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: 128K x 32bit x 2 Banks Synchronous Graphic RAM LVTTL
中文描述: 128K的x 32位× 2銀行同步圖形RAM的LVTTL
文件頁數(shù): 19/51頁
文件大?。?/td> 1033K
代理商: KM4132G271B
KM4132G271B
CMOS SGRAM
- 19
Rev. 2.4 (May 1998)
1) Write Mask (BL=4)
2. DQM Operation
WR
D
0
D
1
D
3
D
0
D
1
D
3
CLK
CMD
DQMi
Note 1
DQ(CL2)
DQ(CL3)
Masked by DQM
2) Read Mask (BL=4)
RD
Q
0
Q
2
Q
3
Q
1
Q
2
Q
3
Masked by DQM
Hi-Z
DQM to Data-in Mask = 0CLK
DQM to Data-out Mask = 2CLK
Hi-Z
3) DQM with Clock Suspended (Full Page Read)
Note 2
RD
CLK
CMD
CKE
DQ(CL2)
DQ(CL3)
Q
0
Q
4
Q
7
Q
8
Q
2
Q
3
Q
6
Q
7
Q
1
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
DQM
*Note :
1. There are 4 DQMi(i=0~3).
Each DQMi masks 8 DQi
s.(1 Byte, 1 Pixel for 8 bpp)
2. DQM makes data out Hi-Z after 2 clocks which should masked by CKE " L".
Q
6
Q
5
1) Clock Suspended During Write (BL=4)
1. CLOCK Suspend
WR
D
0
D
1
D
2
D
3
D
0
D
1
D
2
D
3
CLK
CMD
CKE
Internal
CLK
DQ(CL2)
DQ(CL3)
Masked by CKE
2) Clock Suspended During Read (BL=4)
D
0
Q
1
Not Written
BASIC FEATURE AND FUNCTION DESCRIPTIONS
RD
Q
0
Q
2
Q
0
Q
1
Q
2
Q
3
Masked by CKE
Q
3
Suspended Dout
Note : CKE to CLK disable/enable=1 clock
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