r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 463

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

8.4.10
(1)
Figure 8.22 shows an example of transfer when ETEND output is enabled, and byte-size, single
address mode transfer (read) is performed from external 8-bit, 2-state access space to an external
device.
Figure 8.23 shows an example of transfer when ETEND output is enabled, and word-size, single
address mode transfer (read) is performed from external 8-bit, 2-state access space to an external
device.
φ
Address bus
RD
EDACK
ETEND
Single Address Mode (Read)
φ
Address bus
RD
EDACK
ETEND
Bus release
EXDMAC Bus Cycles (Single Address Mode)
Figure 8.23 Example of Single Address Mode (Word Read) Transfer
Figure 8.22 Example of Single Address Mode (Byte Read) Transfer
Bus release
DMA read
DMA read
Bus release
Bus release
DMA read
Bus release
DMA read
DMA read
Bus release
Rev. 1.00 Sep. 19, 2008 Page 435 of 1270
Bus release
Section 8 EXDMA Controller (EXDMAC)
DMA read
Last transfer cycle
transfer
cycle
Last
DMA read
Bus release
REJ09B0466-0100
Bus
release