HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 243

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

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