Datasheet
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11.4.2 Example of DMA Transfer between External RAM and External Device with
DACK
In this example, an external request, serial address mode transfer with external memory as the
transfer source and an external device with DACK as the transfer destination is executed using
DMAC channel 1.
Table 11.8 indicates the transfer conditions and the setting values of each of the registers.
Table 11.8 Transfer Conditions and Register Set Values for Transfer between External
RAM and External Device with DACK
Transfer Conditions Register Value
Transfer source: external RAM SAR1 H'00400000
Transfer destination: external device with DACK DAR1 (access by DACK)
Transfer count: 32 times DMATCR1 H'00000020
Transfer source address: decremented CHCR1 H'00002269
Transfer destination address: (setting ineffective)
Transfer request source: external pin (DREQ1) edge
detection
Bus mode: burst
Transfer unit: word
No interrupt request generation at end of transfer
Channel priority ranking: 2 > 0 > 1 > 3 DMAOR H'0201
11.4.3 Example of DMA Transfer between A/D Converter and On-Chip Memory
(Address Reload On) (Excluding A Mask)
In this example, the on-chip A/D converter channel 0 is the transfer source and on-chip memory is
the transfer destination, and the address reload function is on.
Table 11.9 indicates the transfer conditions and the setting values of each of the registers.