HD6433045 HITACHI [Hitachi Semiconductor], HD6433045 Datasheet - Page 244

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HD6433045

Manufacturer Part Number
HD6433045
Description
Hitachi Single-Chip Microcomputer
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet

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Figure 8-18 shows the timing when the DMAC is activated by the falling edge of DREQ in block
transfer mode.
Figure 8-18 Timing of DMAC Activation by Falling Edge of DREQ in Block Transfer Mode
ø
DREQ
Address
bus
RD
HWR
TEND
,
LWR
T
1
T
2
T
1
DMAC cycle
T
2
T
1
T
2
End of 1 block transfer
230
T
1
T
2
T
1
Next sampling
Minimum 4 states
CPU cycle
T
2
T
1
T
2
T
d
DMAC cycle
T
1
T
2

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