HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 251

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

7.1.4
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
Channel
0
1
Pin Configuration
Pin Name
DMA request 0
DMA transfer acknowledge 0 DACK0
DMA transfer end 0
DMA request 1
DMA transfer acknowledge 1 DACK1
DMA transfer end 1
DMAC Pins
Section 7 DMA Controller (Not Supported in the H8S/2321)
Symbol
DREQ0
TEND0
DREQ1
TEND1
Rev.6.00 Sep. 27, 2007 Page 221 of 1268
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
REJ09B0220-0600