SM55161A Datasheet, PDF (37/64 Pages) Austin Semiconductor – 262144 x 16 BIT VRAM MULTIPORT VIDEO RAM

Austin Semiconductor, Inc.
VRAM
SM55161A
Production
FIGURE 30: READ-WRITE/READ-MODIFY-WRITE-CYCLE TIMING
TABLE 9: READ-WRITE/READ-MODIFY-WRITE-CYCLE STATE TABLE
CYCLE
Write operation (nonmasked)
Write operation with nonpersistent write-per-bit
Write operation with persistent write-per-bit
STATE
1
2
3
H
Don't Care Valid Data
L
Write Mask Valid Data
L
Don't Care Valid Data
SMJ55161A
Rev. 1.6 03/05
37
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