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Chapter 10
16-bit Inverter Timer/Counter R
User’s Manual U16580EE3V1UD00
Figure 10-34:
Examples when Peak Interrupts and Valley Interrupts Occur Alternately (2/2)
(c) when TRnCMS = 1, TRnRDE = x (anytime rewrite)
10.7.3 Interrupt thinning out function during counter saw tooth wave operation
The operations related to the interrupt thinning out function during counter saw tooth wave operation
(PWM mode, PWM mode with dead time) are indicated below.
•
The interrupt subject to thinning out is INTTRnCD (peak interrupt). The saw tooth wave
operation occurs upon a match between the TRnCCR0 register and counter occurs.
•
TRnOPT1 register bit TRnICE is used to enable INTTRnCD interrupt output and to specify
thinning out count targets.
•
The TRnOPT1 register bit TRnIOE setting is invalid. INTTRnOD interrupt output is prohibited.
•
TRnOPT1 register bit TRnRDE is used to specify reload thinning out Yes/No.
•
If thinning out Yes is specified, reload is executed at the same timing as interrupt output
following thinning out.
•
If thinning out No is specified, reload is executed at the reload timing after write access to the
TRnCCR1 register.
Caution:
When write access is performed to the TRnOPT1 register, the internal thinning out
counter is cleared when the register value is updated. Therefore, the interrupt
interval may temporarily become longer than expected.
To prevent this, it is recommended to set TRnCSM = 0 and TRnRDE = 1, and to
change the interrupt thinning out count with the reloaded setting according to
interrupt thinning out. Using this method, the interrupt interval is kept the same as
the setting value.
Counter
INTTRnCD
INTTRnOD
TRnIDS4 to 0
TRnID4 to 0
Instantly reflected
Interrupt thinning
out counter
Clear
* Instantly reflected after rewrite. The reload timing is ignored.
* The clear timing is transfer to the buffer, not register rewrite.
00
01 02
02
04
00
01
02
03
04
00
01
02
00
04
00
01
02 03 04
Содержание MuPD70F3187
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Страница 192: ...192 Chapter 5 Memory Access Control Function μPD70F3187 only User s Manual U16580EE3V1UD00 MEMO ...
Страница 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Страница 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Страница 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
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Страница 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Страница 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Страница 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Страница 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Страница 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
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