參數(shù)資料
型號(hào): ML60851DTB
廠商: LAPIS SEMICONDUCTOR CO LTD
元件分類: 總線控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP44
封裝: 10 X 10 MM, 0.80 MM PITCH, PLASTIC, TQFP-44
文件頁數(shù): 55/84頁
文件大?。?/td> 394K
代理商: ML60851DTB
FEDL60851D-01
1Semiconductor
ML60851D
58/83
DMA Transfer Timing (6)
Memory to ML60851D (Single Transfer, Dual Address Mode)
Parameter
Symbol
Condition
Min.
Max.
Unit
Note
DREQ Disable Time
t
1
Load 20 pF
20
ns
DREQ Enable Time
t
2
—63
ns
4
FIFO Access Time
t
3
FIFO WRITE
42
ns
1
Write Data Setup Time
t
4
30
ns
Write Data Hold Time
t
5
2—
ns
8-bit DMA
63
ns
2
Recovery Time
t
6
16-bit DMA
105
ns
3
Notes: 1. When in Dual Address mode, the DACK is ignored.
t
1 and t3 are defined depending on CS or WR which becomes active last.
Refer to WRITE Timing (1) for Address Setup Time and Address Hold Time.
2. 3-clock time of oscillation clock (clock period: 21 ns)
3. 5-clock time of oscillation clock (clock period: 21 ns)
4. It is possible to increase t
2 by setting the DMA interval register (DMAINTVL).
A7:A0
DREQ
CS
t
1
t
2
t
6
t
3
t
4
t
5
WR
DIN
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