r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 491

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

This LSI includes a data transfer controller (DTC). The DTC can be activated by an interrupt or
software, to transfer data.
Figure 9.1 shows a block diagram of the DTC.
9.1
•
•
1. Normal mode
2. Repeat mode
3. Block transfer mode
•
•
•
•
•
•
One operation transfers one byte or one word of data.
Memory address is incremented or decremented by 1 or 2.
From 1 to 65,536 transfers can be specified.
One operation transfers one byte or one word of data.
Memory address is incremented or decremented by 1 or 2.
Once the specified number of transfers (1 to 256) has ended, the initial state is restored, and
transfer is repeated.
One operation transfers one block of data.
The block size is 1 to 256 bytes or words.
From 1 to 65,536 transfers can be specified.
Either the transfer source or the transfer destination is designated as a block area.
Transfer possible over any number of channels
Three transfer modes
One activation source can trigger a number of data transfers (chain transfer)
Direct specification of 16-Mbyte address space possible
Activation by software is possible
Transfer can be set in byte or word units
A CPU interrupt can be requested for the interrupt that activated the DTC
Module stop mode can be set
Features
Section 9 Data Transfer Controller (DTC)
Rev. 1.00 Sep. 19, 2008 Page 461 of 1342
Section 9 Data Transfer Controller (DTC)
REJ09B0467-0100