HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 242

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HD6433044

Manufacturer Part Number
HD6433044
Description
(HD64 Series) Hitachi Single-Chip Microcomputer
Manufacturer
Hitachi Semiconductor
Datasheet

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Figure 8-16 shows the timing when the DMAC is activated by the falling edge of DREQ in normal
mode.
ø
DREQ
Address
bus
RD
HWR
Figure 8-16 Timing of DMAC Activation by Falling Edge of DREQ in Normal Mode
,
LWR
T
2
T
CPU cycle
1
Minimum 4 states
T
2
T
1
T
2
T
d
228
T
1
DMAC cycle
T
2
T
1
Next sampling point
T
2
T
1
CPU
cycle
T
2
T
DMAC cycle
d
T
1
T
2

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