h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 200

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 8 Data Transfer Controller (DTC)
8.8
8.8.1
DTC operation can be disabled or enabled using the module stop control register. The initial
setting is for DTC operation to be enabled. Register access is disabled by setting module stop
mode. Note that module stop mode cannot be set during DTC being activated. For details, refer to
section 21, Power-Down Modes.
8.8.2
The MRA, MRB, SAR, DAR, CRA, and CRB registers are all located in on-chip RAM. When the
DTC is used, the RAME bit in SYSCR must not be cleared to 0.
8.8.3
For DTCE bit setting, use bit manipulation instructions such as BSET and BCLR. If all interrupts
are masked, multiple activation sources can be set at one time (only at the initial setting) by
writing data after executing a dummy read on the relevant register.
Rev. 2.00 Dec. 05, 2005 Page 162 of 724
REJ09B0200-0200
Usage Notes
Module Stop Mode Setting
On-Chip RAM
DTCE Bit Setting