h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 214
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h8s-2161b
Manufacturer Part Number
h8s-2161b
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2161B.pdf
(845 pages)
- Current page: 214 of 845
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Section 7 Data Transfer Controller (DTC)
7.5.5
An interrupt request is issued to the CPU when the DTC has completed the specified number of
data transfers, or a data transfer for which the DISEL bit was set to 1. In the case of interrupt
activation, the interrupt set as the activation source is generated. These interrupts to the CPU are
subject to CPU mask level and priority level control by the interrupt controller.
In the case of software activation, a software-activated data transfer end interrupt (SWDTEND) is
generated.
When the DISEL bit is 1 and one data transfer has been completed, or the specified number of
transfers have been completed, after data transfer ends, the SWDTE bit is held at 1 and an
SWDTEND interrupt is generated. The interrupt handling routine will then clear the SWDTE bit
to 0.
When the DTC is activated by software, an SWDTEND interrupt is not generated during a data
transfer wait or during data transfer even if the SWDTE bit is set to 1.
7.5.6
Rev. 3.00 Mar 21, 2006 page 160 of 788
REJ09B0300-0300
DTC activation
request
DTC request
Address
Figure 7.9 DTC Operation Timing (Example in Normal Mode or Repeat Mode)
Interrupts
Operation Timing
Vector read
Transfer information
read
Data transfer
Read Write
Transfer information
write
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