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H8/3028F 数据表(PDF) 9 Page - Renesas Technology Corp

部件名 H8/3028F
功能描述  Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
PDF  923 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

H8/3028F 数据表(HTML) 9 Page - Renesas Technology Corp

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Rev. 2.00, 09/03, page ix of xxx
Item
Page
Revision (See Manual for Details)
7.4.8 DMAC Bus
Cycle
Figure 7.17 Timing of
DMAC Activation by
Low
DREQ Level in
Normal Mode
233
Figure amended
DREQ
RD
HWR
φ
LWR
,
T2
T1
T2
T1
T2
Td
T1
T2
T1
T2
T1
T2
T1
T2
T1
CPU cycle
DMAC cycle
CPU cycle
Minimum 4 states
Next sampling point
Address
bus
Figure 7.18 Timing of
DMAC Activation by
Falling Edge of
DREQ
in Block Transfer Mode
234
Figure amended
φ
DREQ
RD
HWR
TEND
T1
T2
T1
T2
T1
T2
T1
T2
T1
T2
T1
T2
Td
T1
T2
DMAC cycle
DMAC cycle
CPU cycle
Next sampling
Minimum 4 states
End of 1 block transfer
LWR
,
Address
bus
7.4.9 Multiple-Channel
Operation
Figure 7.19 Timing of
Multiple-Channel
Operations
236
Figure amended
φ
RD
T1
T2
T1
T2
Td
T1
T2
T1 T2
T1
T2
Td
T1
T2
T1
T2
,
DMAC cycle
(channel 1)
CPU
cycle
DMAC cycle
(channel 0A)
CPU
cycle
DMAC cycle
(channel 1)
Address
bus
HWR
LWR



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