E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 251

• Manufacturer Part Number: E62655RUSB
• Description: EMULATOR BASE H8S/2655R W/USB
• Manufacturer: Renesas Electronics America
• Type: Microcontrollerr

Specifications of E62655RUSB

• Contents: E6000 Emulator Unit and 4 Logic Probes
• For Use With/related Products: H8S/2655R
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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 DACK
DMA transfer end 0
DMA request 1
DMA transfer acknowledge 1 DACK
DMA transfer end 1
DMAC Pins
Symbol
DREQ
TEND
DREQ
TEND
0
1
0
1
0
1
Rev. 5.00 Sep 14, 2006 page 221 of 1060
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
Section 7 DMA Controller
REJ09B0331-0500