MT42C4256C-10/883C AUSTIN [Austin Semiconductor], MT42C4256C-10/883C Datasheet - Page 24

• Manufacturer Part Number: MT42C4256C-10/883C
• Description: 256K X 4 VRAM 256K x 4 DRAM with 512K x 4 SAM
• Manufacturer: AUSTIN [Austin Semiconductor]

WRITE-CYCLE STATE TABLE
SMJ44C251B/MT42C4256
Rev. 0.1 12/03
Write Operation
Write-mask load/use, Write DQs to I/Os
Use previous write mask, Write DQs to I/Os
Load write mask on later of W\ fall and CAS\ fall
Austin Semiconductor, Inc.
CYCLE
FIGURE 14: Early-Write-Cycle Timing
H
H
1
L
L
24
2
L
L
L
L
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
STATE
H
H
3
L
L
Write Mask Valid Data
Don't Care
Don't Care
Don't Care Write Mask
4
SMJ44C251B
MT42C4256
Valid Data
Valid Data
VRAM
VRAM
VRAM
VRAM
VRAM
5