h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 226

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 7 Data Transfer Controller [H8S/2138 Group]
Source flag cleared
Clear
control
Clear
DTCER
Clear request
Select
On-chip
DTC
supporting
module
IRQ interrupt
Interrupt
request
Interrupt controller
CPU
DTVECR
Interrupt mask
Figure 7.3 Block Diagram of DTC Activation Source Control
When an interrupt has been designated a DTC activation source, existing CPU mask level and
interrupt controller priorities have no effect. If there is more than one activation source at the same
time, the DTC is activated in accordance with the default priorities.
Rev. 4.00 Jun 06, 2006 page 172 of 1004
REJ09B0301-0400