參數(shù)資料
型號(hào)： SMX55161A-80HKCI
廠商： AUSTIN SEMICONDUCTOR INC
元件分類： DRAM
英文描述： 256K X 16 VIDEO DRAM, 80 ns, CDFP64
封裝： CERAMIC, FP-64
文件頁(yè)數(shù)： 42/64頁(yè)
文件大?。?/td> 1223K
代理商： SMX55161A-80HKCI
VRAM
SM55161A
Production
Austin Semiconductor, Inc.
AustinSemiconductor,Inc.reservestherighttochangeproductsorspecificationswithoutnotice.
47
SMJ55161A
Rev. 1.6
03/05
COLUMN MASK DATA
TABLE 13: BLOCK-WRITE-CYCLE STATE TABLE
Write-mask data 0: I/O write disable
1: I/O write enable DQ
Column-mask data DQi – DQi + 7 0: column-write disable
(i = 0,8) 1: column-write enable
12
3
Block-write operation (nonmasked)
H
Don't Care
Valid Data
Block-write operation with nonpersistent write-per-bit
L
Write Mask
Valid Data
Block-write operation with persistent write-per-bit
L
Don't Care
Valid Data
CYCLE
STATE
DQ0-15
COLUMN MASK DATA
DQ0
Column 0 (A0 = 0, A1 = 0, A2 = 0)
DQ1
Column 1 (A0 = 1, A1 = 0, A2 = 0)
DQ2
Column 2 (A0 = 0, A1 = 1, A2 = 0)
DQ3
Column 3 (A0 = 1, A1 = 1, A2 = 0)
DQ4
Column 4 (A0 = 0, A1 = 0, A2 = 1)
DQ5
Column 5 (A0 = 1, A1 = 0, A2 = 1)
DQ6
Column 6 (A0 = 0, A1 = 1, A2 = 1)
DQ7
Column 7 (A0 = 1, A1 = 1, A2 = 1)
DQ8
Column 0 (A0 = 0, A1 = 0, A2 = 0)
DQ9
Column 1 (A0 = 1, A1 = 0, A2 = 0)
DQ10
Column 2 (A0 = 0, A1 = 1, A2 = 0)
DQ11
Column 3 (A0 = 1, A1 = 1, A2 = 0)
DQ12
Column 4 (A0 = 0, A1 = 0, A2 = 1)
DQ13
Column 5 (A0 = 1, A1 = 0, A2 = 1)
DQ14
Column 6 (A0 = 0, A1 = 1, A2 = 1)
DQ15
Column 7 (A0 = 1, A1 = 1, A2 = 1)
Lower Byte
Upper Byte
Low: Mask
High: No Mask
Low: Mask
High: No Mask
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