HD6432351 Datasheet, PDF (215/989 Pages) Renesas Technology Corp – The H8S/2000 CPU has an internal 32-bit architecture, is provided with sixteen 16-bit general registers and a concise

7.1.4 Pin Configuration
Table 7-2 summarizes the DMAC pins.
In short address mode, external request transfer, single address transfer, and transfer end output
are not performed for channel A.
The DMA transfer acknowledge function is used in channel B single address mode in short
address mode.
When the DREQ pin is used, do not designate the corresponding port for output.
With regard to the DACK pins, setting single address transfer automatically sets the corresponding
port to output, functioning as a DACK pin.
With regard to the TEND pins, whether or not the corresponding port is used as a TEND pin can
be specified by means of a register setting.
Table 7-2 DMAC Pins
Channel Pin Name
0
DMA request 0
Symbol
DREQ0
DMA transfer acknowledge 0 DACK0
DMA transfer end 0
1
DMA request 1
TEND0
DREQ1
DMA transfer acknowledge 1 DACK1
DMA transfer end 1
TEND1
I/O
Input
Output
Output
Input
Output
Output
Function
DMAC channel 0 external
request
DMAC channel 0 single address
transfer acknowledge
DMAC channel 0 transfer end
DMAC channel 1 external
request
DMAC channel 1 single address
transfer acknowledge
DMAC channel 1 transfer end
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