參數(shù)資料
型號: M30240MC-XXXFP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, MICROCONTROLLER, PQFP80
封裝: 0.80 MM PITCH, PLASTIC, QFP-80
文件頁數(shù): 84/125頁
文件大小: 753K
代理商: M30240MC-XXXFP
Mitsubishi microcomputers
M16C / 24 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
63
CONFIDENTIAL
Preliminary Specifications REV.B
Specifications in this manual are tentative and subject to change
DMAC
Figure 57:
Example of the transfer cycle for a source read
CLKout
Address
bus
Data
bus
CPU use
Source
Destination
Dummy
cycle
Dummy
cycle
(1) 8-bit transfers
16-bit transfers from even address and the source address is even.
CLKout
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)
CLKout
Address
bus
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 two destination write cycles).
CLKout
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 write cycles).
Note: The same timing changes occur with the respective conditions at the destination as at the source.
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