參數(shù)資料
型號: M37920FCCHP
廠商: Mitsubishi Electric Corporation
英文描述: Single Chip 16 Bits CMOS Microcomputer(16位單片機(jī))
中文描述: 單片微機(jī)16位的CMOS(16位單片機(jī))
文件頁數(shù): 74/158頁
文件大?。?/td> 1261K
代理商: M37920FCCHP
M37920FCCGP, M37920FCCHP
M37920FGCGP, M37920FGCHP
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER FLASH MEMORY VERSION
MITSUBISHI MICROCOMPUTERS
74
Fig. 68 Bit configuration of DMA
i
control register
7
0
6
0
5
4
3
2
1
0
DMA0 control register
DMA1 control register
DMA2 control register
DMA3 control register
DMA request source select bits
0 0 0 0 : Do not select.
0 0 0 1 : External source (DMAREQ
i
)
0 0 1 0 : Software DMA source
0 0 1 1 : Timer A0
0 1 0 0 : Timer A1
0 1 0 1 : Timer A2
0 1 1 0 : Timer A3
0 1 1 1 : Timer A4
1 0 0 0 : Timer B0
1 0 0 1 : Timer B1
1 0 1 0 : Timer B2
1 0 1 1 : UART0 receive
1 1 0 0 : UART0 transmit
1 1 0 1 : UART1 receive
1 1 1 0 : UART1 transmit
1 1 1 1 : A-D conversion
Address
CE
16
DE
16
EE
16
FE
16
Edge sense/Level sense select bit
(Note 1)
(Used when both of the external source and burst transfer mode are selected.)
0 : Edge sense (Rising edge)
1 : Level sense (
L
level)
DMAACK
i
validity bit
(Note 2)
0 : Invalid. Pin DMAACK
i
functions as a programmable I/O port pin.
1 : Valid. Functions as pin DMAACK
i
are valid.
Notes 1:
Be sure to fix this bit to
0
in any of the following cases:
When the external source is selected by using bits 0 to 3
In the cycle steal transfer mode
Level sense can be selected only when both of the external source and burst transfer mode are selected.
2:
DMA3 is not equipped with the DMAACK output function. For the DMA3 control register, be sure to clear this bit to
0
.
The value is
0
at reading.
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