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M16C/62M データシート(PDF) 93 Page - Renesas Technology Corp

部品番号 M16C/62M
部品情報  16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES
PDF  615 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/62M データシート(HTML) 93 Page - Renesas Technology Corp

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Mitsubishi microcomputers
M16C / 62A Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
DMAC
1-74
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
Transferring 16-bit data on an 8-bit data bus (In this case, there are also two destination cycles).
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)
(When 16-bit data is transferred on an 8-bit data bus, there are two destination cycles).
Note: The same timing changes occur with the respective conditions at the destination as at the source.
Figure 1.13.5. Example of the transfer cycles for a source read



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