r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 440

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 8 EXDMA Controller (EXDMAC)
Rev. 1.00 Sep. 19, 2008 Page 410 of 1342
REJ09B0467-0100
Transfer from external memory to external device with DACK
Transfer from external device with DACK to external memory
φ
Address bus
RD
WR
EDACK
Data bus
ETEND
φ
Address bus
RD
WR
EDACK
Data bus
ETEND
Figure 8.4 Example of Timing in Single Address Mode
EXDMA cycle
EXDMA cycle
EDSAR
EDDAR
Address to external memory space
RD signal to external memory space
Data output from external memory
Address to external memory space
WR signal to external memory space
Data output from external device
with DACK