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SMJ44C251B-12HJM Datasheet(PDF) 9 Page - Austin Semiconductor |
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SMJ44C251B-12HJM Datasheet(HTML) 9 Page - Austin Semiconductor |
9 / 57 page VRAM VRAM VRAM VRAM VRAM SMJ44C251B MT42C4256 Austin Semiconductor, Inc. SMJ44C251B/MT42C4256 Rev. 0.1 12/03 Austin Semiconductor, Inc. reserves the right to change products or specifications without notice. 9 FIGURE 1: EXAMPLE OF WRITE-PER-BIT OPERATIONS DQ Mask = H: Write to I/O enable = L: Write to I/O disable FIGURE 2: EXAMPLE BLOCK-WRITE DIAGRAM OPERATIONS NOTES: * W\ must be low during the block-write cycle. DQ0–DQ3 are latched on the later of W\ or CAS\ falling edge except in block 6 (see legend). LEGEND: 1. Refresh address 2. Row address 3. Block address (A2 –A8) 4. Color-register data 5. Column-mask data 6. DQ-mask data. DQ0–DQ3 are latched on the falling edge of RAS\. |
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