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M16C/26 データシート(PDF) 78 Page - Renesas Technology Corp

部品番号 M16C/26
部品情報  16-BIT CMOS SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES
PDF  239 Pages
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メーカー  RENESAS [Renesas Technology Corp]
ホームページ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M16C/26 データシート(HTML) 78 Page - Renesas Technology Corp

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Renesas Technology Corp.
DMAC
72
M16C/26 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Under
development
Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative and subject to change.
Figure 1.11.5. Example of the transfer cycles for a source read
BCLK
Address
bus
RD signal
WR signal
Data
bus
CPU use
CPU use
CPU use
CPU use
Source
Source
Destination
Destination
Dummy
cycle
Dummy
cycle
(1) 8-bit transfers
16-bit transfers and the source address is even.
BCLK
Address
bus
RD signal
WR signal
Data
bus
CPU use
CPU use
CPU use
CPU use
Source
Source
Destination
Destination
Dummy
cycle
Dummy
cycle
(3) One wait is inserted into the source read under the conditions in (1)
BCLK
Address
bus
RD signal
WR signal
Data
bus
CPU use
CPU use
CPU use
CPU use
Source
Source
Destination
Destination
Dummy
cycle
Dummy
cycle
Source + 1
Source + 1
(2) 16-bit transfers and the source address is odd
BCLK
Address
bus
RD signal
WR signal
Data
bus
CPU use
CPU use
CPU use
CPU use
Source
Source
Destination
Destination
Dummy
cycle
Dummy
cycle
Source + 1
Source + 1
(4) One wait is inserted into the source read under the conditions in (2)
Note: The same timing changes occur with the respective conditions at the destination as at the source



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