Rev. 1.0, 09/03, page 256 of 568
The CMF flag in TCSR_1 is set to 1 when a lower 8-bit compare-match occurs.
•
Counter clear specification
If the CCLR1 and CCLR0 bits in TCR_0 have been set for counter clear at compare-match,
the 16-bit counter (TCNT_0 and TCNT_1 together) is cleared when a 16-bit compare-
match occurs. The 16-bit counter (TCNT_0 and TCNT_1 together) is cleared even if
counter clear by the TMRI01 pin has also been set.
The settings of the CCLR1 and CCLR0 bits in TCR_1 are ignored. The lower 8 bits cannot
be cleared independently.
•
Pin output
Control of output from the TMO0 pin by bits OS3 to OS0 in TCSR_0 is in accordance with
the 16-bit compare-match conditions.
Control of output from the TMO1 pin by bits OS3 to OS0 in TCSR_1 is in accordance with
the lower 8-bit compare-match conditions.
11.6.2
Compare-Match Count Mode
When bits CKS2 to CKS0 in TCR_1 are B
′
100, TCNT_1 counts compare-match A for channel 0.
Channels 0 and 1 are controlled independently. Conditions such as setting of the CMF flag,
generation of interrupts, output from the TMO pin, and counter clearing are in accordance with the
settings for each channel.
11.7 Interrupt
Sources
11.7.1
Interrupt Sources and DTC Activation
The 8-bit timer can generate three types of interrupt: CMIA, CMIB, and OVI. Table 11.2 shows
the interrupt sources and priority. Each interrupt source can be enabled or disabled independently
by interrupt enable bits in TCR. Independent signals are sent to the interrupt controller for each
interrupt. It is also possible to activate the DTC by means of CMIA and CMIB interrupts.
Summary of Contents for H8S/2627
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