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M16C/26 датащи(PDF) 74 Page - Renesas Technology Corp

номер детали M16C/26
подробное описание детали  16-BIT CMOS SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES
PDF  239 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
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M16C/26 датащи(HTML) 74 Page - Renesas Technology Corp

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DMAC
68
M16C/26 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Under
development
Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative and subject to change.
DMA0 request cause select register
Symbol
Address
When reset
DM0SL
03B816
0016
Function
Bit symbol
b7
b6
b5
b4
b3
b2
b1
b0
DMA request cause
select bit
DSEL0
RW
DSEL1
DSEL2
DSEL3
Nothing is assigned.
In an attempt to write to these bits, write 0 . The value, if read, turns out to be 0 .
Software DMA
request bit
If software trigger is selected, a
DMA request is generated by
setting this bit to 1 (When read,
the value of this bit is always 0 )
DSR
b3 b2 b1 b0
0 0 0 0 : Falling edge of INT0 pin
0 0 0 1 : Software trigger
0 0 1 0 : Timer A0
0 0 1 1 : Timer A1
0 1 0 0 : Timer A2
0 1 0 1 : Timer A3
0 1 1 0 : Timer A4 (DMS=0)
/two edges of INT0 pin (DMS=1)
0 1 1 1 : Timer B0 (DMS=0)
1 0 0 0 : Timer B1 (DMS=0)
1 0 0 1 : Timer B2 (DMS=0)
1 0 1 0 : UART0 transmit
1 0 1 1 : UART0 receive
1 1 0 0 : UART2 transmit
1 1 0 1 : UART2 receive
1 1 1 0 : A-D conversion
1 1 1 1 : UART1 transmit
Bit name
DMA request cause
expansion select bit
DMS
0 : Normal
1 : Expanded cause
Figure 1.11.2. DMAC register (1)



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