參數(shù)資料
型號(hào): ML60852A
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: PLASTIC, QFP-44
文件頁數(shù): 71/82頁
文件大?。?/td> 370K
代理商: ML60852A
FEDL60852A-03
1Semiconductor
ML60852A
72/81
DMA Transfer Timing (1)
ML60852A to Memory (Single Transfer, Single 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)
DACK Hold Time
t
3
0—
ns
Read Data Delay Time
t
4
Load 20 pF
46
ns
(1)
Data Hold Time
t
5
0—
ns
8-bit DMA
63
ns
(2)
Recovery Time
t
6
16-bit DMA
105
ns
(3)
Notes: (1) When in Single Address mode,
CS and A6: A0 are ignored.
t
1 and t4 are defined depending on DACK or RD which becomes active last.
(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).
DACK
DATA OUT
,4-3
DOUT
4,
t4
t3
t5
t6
t2
t1
DREQ
RD
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