参数资料
型号: ML60851CTB
厂商: LAPIS SEMICONDUCTOR CO LTD
元件分类: 总线控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP44
封装: 10 X 10 MM, 0.80 MM PITCH, PLASTIC, TQFP-44
文件页数: 49/68页
文件大小: 442K
代理商: ML60851CTB
ML60851C
Semiconductor
52/67
PEDL60851C-02
DMA Transfer Timing (1)
ML60851C to Memory (Single Transfer, Single Address Mode)
Parameter
Symbol
Condition
Note
DREQ Disable Time
t1
DREQ Enable Time
t2
DACK Hold Time
t3
Read Data Delay Time
t4
1
Unit
ns
Max.
Min.
—20
0
25
Data Hold Time
t5
ns
Recovery Time
t6
2
ns
63
ns
Load 20 pF
8-bit DMA
16-bit DMA
0
105
63
25
—3
4
Notes: 1. When in Single Address mode, CS and A7:A0 are ignored.
t1 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 t2 by setting the DMA interval register (DMAINTVL).
t1
t2
t5
t4
DREQ
DACK
RD
DOUT
t3
t6
DATA OUT
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