D12320VF25IV Datasheet, PDF (325/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 7 DMA Controller (Not Supported in the H8S/2321)
Single Address Mode (Write): Figure 7.29 shows a transfer example in which TEND output is
enabled and byte-size single address mode transfer (write) is performed from an external device to
external 8-bit, 2-state access space.
φ
Address bus
HWR
LWR
DACK
TEND
DMA write
DMA write
DMA write
DMA
DMA write dead
Bus
release
Bus
release
Bus
release
Bus Last transfer Bus
release cycle
release
Figure 7.29 Example of Single Address Mode (Byte Write) Transfer
Rev.6.00 Sep. 27, 2007 Page 293 of 1268
REJ09B0220-0600