M30240ECFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30240ECFP Datasheet - Page 67

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M30240ECFP

Manufacturer Part Number
M30240ECFP
Description
M30240 Group Specification
Manufacturer
MITSUBISHI [Mitsubishi Electric Semiconductor]
Datasheet
Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
DMAC
Figure 1.57: Example of the transfer cycle for a source read
(1) 8-bit transfers
(2) 16-bit transfers and the source address is odd
(3) One wait is inserted into the source read under the conditions in (1)
(4) One wait is inserted into the source read under the conditions in (2)
CLKout
Address
bus
Data
bus
CLKout
Address
bus
Data
bus
CLKout
Address
bus
RD signal
WR signal
Data
bus
CLKout
Address
bus
RD signal
WR 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).
Note: The same timing changes occur with the respective conditions at the destination as at the source.
Transferring 16-bit data on an 8-bit data bus (In this case, there are 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
1-67
Destination
Destination
Dummy
cycle
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Destination
Destination
Dummy
cycle
Source + 1
Source + 1
Dummy
cycle
Dummy
cycle
Dummy
cycle
Dummy
cycle
Destination
Destination
CPU use
CPU use
Dummy
cycle
Mitsubishi microcomputers
CPU use
CPU use
Dummy
cycle
CPU use
CPU use
M30240 Group
CPU use
CPU use

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