HD6433045 HITACHI [Hitachi Semiconductor], HD6433045 Datasheet - Page 243

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HD6433045

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

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Figure 8-17 shows the timing when the DMAC is activated by level-sensitive low DREQ input in
normal mode.
ø
DREQ
Address
bus
RD
HWR
Figure 8-17 Timing of DMAC Activation by Low DREQ Level in Normal Mode
,
LWR
T
2
T
CPU cycle
1
Minimum 4 states
T
2
T
1
T
2
T
d
229
T
1
DMAC cycle
T
2
T
1
Next sampling point
T
2
T
1
T
2
CPU cycle
T
1
T
2
T
1

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