參數(shù)資料
型號(hào)： M30240M4-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(yè)數(shù)： 81/125頁(yè)
文件大?。?/td> 753K
代理商： M30240M4-XXXFP
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Mitsubishi microcomputers
M16C / 24 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
61
CONFIDENTIAL
Preliminary Specifications REV.B
Specifications in this manual are tentative and subject to change
DMAC
DMAC register (2)
Figure 56:
DMAC register (3)
DMAi control register
Symbol
Address
When reset
DMiCON(i=0,1)
002C16, 003C16
00000X002
Bit name
Function
Bit symbol
Transfer unit bit select bit
b7
b6
b5
b4
b3
b2
b1
b0
0 : 16 bits
1 : 8 bits
DMBIT
RW
DMASL
DMAS
DMAE
Repeat transfer mode
select bit
0 : Single transfer
1 : Repeat transfer
DMA request bit (Note 1)
0 : DMA not requested
1 : DMA requested
0 : Disabled
1 : Enabled
0 : Fixed
1 : Forward
DMA enable bit
Source address direction
select bit (Note 3)
Destination address
direction select bit (Note 3)
0 : Fixed
1 : Forward
DSD
DAD
Nothing is assigned.
These bits can neither be set nor reset. When read, the value of these bits is “0”.
Note 1: DMA request can be cleared by resetting the bit.
Note 2: This bit can only be set to “0”.
Note 3: Source address direction select bit and destination address direction select bit
cannot be set to “1” simultaneously.
(Note 2)
b7
b0
b7
b0
(b8)
(b15)
Function
RW
Transfer counter
Set a value one less than the transfer count
Symbol
Address
When reset
TCR0
002916, 002816
Indeterminate
TCR1
003916, 003816
Indeterminate
DMAi transfer counter (i = 0, 1)
Transfer count
specification
000016 to FFFF16
b7
(b23)
b3
b0
b7
b0
b7
b0
(b8)
(b16)(b15)
(b19)
Function
RW
Source pointer
Stores the source address
Symbol
Address
When reset
SAR0
002216 to 002016
Indeterminate
SAR1
003216 to 003016
Indeterminate
DMAi source pointer (i = 0, 1)
Transfer count
specification
0000016 to FFFFF16
Nothing is assigned.
These bits can neither be set nor reset. When read, the value of these bits is “0”.
Symbol
Address
When reset
DAR0
002616 to 002416
Indeterminate
DAR1
003616 to 003416
Indeterminate
b3
b0
b7
b0
b7
b0
(b8)
(b15)
(b16)
(b19)
Function
RW
Destination pointer
Stores the destination address
DMAi destination pointer (i = 0, 1)
Transfer count
specification
0000016 to FFFFF16
b7
(b23)
Nothing is assigned.
These bits can neither be set nor reset. When read, the value of these bits is “0”.
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