Datasheet

Table Of Contents
Section 10 16-Bit Timer Pulse Unit (TPU)
REJ09B0140-0900 Rev. 9.00 Page 333 of 846
Sep 16, 2010
H8S/2215 Group
10.6 Interrupts
10.6.1 Interrupt Source and Priority
There are three kinds of TPU interrupt source: TGR input capture/compare match, TCNT
overflow, and TCNT underflow. Each interrupt source has its own status flag and enable/disabled
bit, allowing generation of interrupt request signals to be enabled or disabled individually. When
an interrupt request is generated, the corresponding status flag in TSR is set to 1. If the
corresponding enable/disable bit in TIER is set to 1 at this time, an interrupt is requested. The
interrupt request is cleared by clearing the status flag to 0. Relative channel priorities can be
changed by the interrupt controller, but the priority order within a channel is fixed. For details, see
section 5, Interrupt Controller. Table 10.24 lists the TPU interrupt sources.
Table 10.24 TPU Interrupts
Channel Name Interrupt Source
Interrupt
Flag
DTC
Activation
DMAC
Activation Priority
*
TGI0A
TGRA_0 input
capture/compare match
TGFA Possible Possible High
TGI0B
TGRB_0 input
capture/compare match
TGFB Possible Not possible
TGI0C
TGRC_0 input
capture/compare match
TGFC Possible Not possible
TGI0D
TGRD_0 input
capture/compare match
TGFD Possible Not possible
0
TCI0V TCNT_0 overflow TCFV Not possible Not possible
TGI1A
TGRA_1 input
capture/compare match
TGFA Possible Possible
TGI1B
TGRB_1 input
capture/compare match
TGFB Possible Not possible
TCI1V TCNT_1 overflow TCFV Not possible Not possible
1
TCI1U TCNT_1 underflow TCFU Not possible Not possible
TGI2A
TGRA_2 input
capture/compare match
TGFA Possible Possible
TGI2B
TGRB_2 input
capture/compare match
TGFB Possible Not possible
2
TCI2V TCNT_2 overflow TCFV Not possible Not possible
TCI2U TCNT_2 underflow TCFU Not possible Not possible Low
Note: * This table shows the initial state immediately after a reset. The relative channel
priorities
can be changed by the interrupt controller.