參數(shù)資料
型號: M30302M4-XXXFP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, MICROCONTROLLER, PQFP100
封裝: 14 X 20 MM, PLASTIC, QFP-100
文件頁數(shù): 148/177頁
文件大?。?/td> 2355K
代理商: M30302M4-XXXFP
Mitsubishi microcomputers
M16C / 30 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
DMAC
72
BCLK
Address
bus
RD signal
WR signal
Data
bus
CPU use
Source
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
Source
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
Source
Destination
Dummy
cycle
Dummy
cycle
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
Source
Destination
Dummy
cycle
Dummy
cycle
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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