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H8/3028F 数据表(PDF) 263 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) 263 Page - Renesas Technology Corp

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Rev. 2.00, 09/03, page 233 of 890
Figure 7.17 shows the timing when the DMAC is activated by level-sensitive low
DREQ input in
normal mode.
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 7.17 Timing of DMAC Activation by Low
DREQ
DREQ
DREQ
DREQ Level in Normal Mode



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