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H8/3028F 数据表(PDF) 270 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) 270 Page - Renesas Technology Corp

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Rev. 2.00, 09/03, page 240 of 890
7.4.14
DMAC States in Reset State, Standby Modes, and Sleep Mode
When the chip is reset or enters software standby mode, the DMAC is initialized and halts.
DMAC operations continue in sleep mode. Figure 7.24 shows the timing of a cycle-steal transfer
in sleep mode.
φ
Address bus
RD
HWR LWR
,
2
Td
T
T2
1
T2
T
d
T1
T
2
T1
T
2
T
1
T
CPU cycle
DMAC cycle
DMAC cycle
Sleep mode
d
T
Figure 7.24 Timing of Cycle-Steal Transfer in Sleep Mode



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