h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 229

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

Figure 7.26 shows an example of transfer when TEND output is enabled, and longword-size,
single address mode transfer (read) is performed from external 16-bit, 2-state access space to an
external device.
Single Address Mode (Write): Figure 7.27 shows an example of transfer when 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.
Figure 7.28 shows an example of transfer when TEND output is enabled, and word-size, single
address mode transfer (write) is performed from an external device to external 8-bit, 2-state access
space.
Address bus
φ
Address bus
Figure 7.26 Example of Single Address Mode (Longword Read) Transfer
φ
Figure 7.27 Example of Single Address Mode (Byte Write) Transfer
release
Bus release
Bus
DMA write
DMA read
Bus release
release
DMA write
Bus
Bus release
DMA read
DMA write
Bus release
Rev. 2.00, 03/04, page 197 of 534
release
Bus
DMA write
transfer
Last transfer cycle
cycle
Last
DMA read
Bus release
release
Bus