HD6433045 HITACHI [Hitachi Semiconductor], HD6433045 Datasheet - Page 242

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

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