M30622ECTFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30622ECTFP Datasheet - Page 78
M30622ECTFP
Manufacturer Part Number
M30622ECTFP
Description
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Manufacturer
MITSUBISHI [Mitsubishi Electric Semiconductor]
Datasheet
1.M30622ECTFP.pdf
(184 pages)
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DMAC
Figure 1.16.5. Example of the transfer cycles for a source read
Note 1: The same timing changes occur with the respective conditions at the destination as at the source.
Note 2: M30623(80-pin package), in case of access to the external bus area, can be used only when 8-bit bus mode.
(1) 8-bit transfers
(4) One wait is inserted into the source read under the conditions in (2)
(2) 16-bit transfers and the source address is odd
(3) One wait is inserted into the source read under the conditions in (1)
BCLK
WR signal
BCLK
WR signal
BCLK
WR signal
BCLK
WR signal
Address
bus
RD signal
Data
bus
Address
bus
RD signal
Data
bus
Address
bus
RD signal
Data
bus
Address
bus
RD signal
Data
bus
16-bit transfers from even address and the source address is even.
(When 16-bit data is transferred on an 8-bit data bus, there are two destination write cycles).
Transferring 16-bit data on an 8-bit data bus (In this case, there are also two destination write cycles).
CPU use
CPU use
CPU use
CPU use
CPU use
CPU use
CPU use
CPU use
Source
Source
Source
Source
Source
Source
Destination
Source + 1
Source
Source
Destination
Source + 1
Destination
Destination
Dummy
cycle
Destination
Destination
Dummy
cycle
Source + 1
78
Source + 1
Dummy
cycle
Dummy
cycle
Dummy
cycle
Dummy
cycle
Destination
Destination
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
CPU use
CPU use
Dummy
cycle
CPU use
Dummy
cycle
CPU use
CPU use
CPU use
CPU use
Mitsubishi microcomputers
CPU use
M16C / 62T Group
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