NEC PD703114 User Manual page 211

(Relationship Between STINTn Bit Setting and CUL Bit Change): PWM Mode 1 (Asymmetric Triangular Wave)
TM0CEn bit
CM0n3
TM0n count value
0000H
INTTM0n INTTM0n INTTM0n INTTM0n
STINTn = 1
INTCM0n3 INTCM0n3 INTCM0n3 INTCM0n3
CUL02 to CUL00 bits
TM0CEn bit
CM0n3
TM0n count value
0000H
STINTn = 1
CUL02 to CUL00 bits
Interrupt culling
TM0CEn bit
CM0n3
TM0n count value
0000H
STINTn = 1
CUL02 to CUL00 bits
Interrupt culling
Caution If, in TM0n, to realize the INTTM0n and INTCM0n3 culling function, the culling ratio is set to a
value other than 1/1 by bits CUL02 to CUL00 and counting is started, the subsequent interrupt
output sequence will differ due to the set value of the STINTn bit at count start.
Remark n = 0, 1
CHAPTER 9 TIMER/COUNTER FUNCTION
Figure 9-6. Interrupt Culling Ratio Change Timing
INTTM0n
000 001
Interrupt culling
1/1 cycle
INTTM0n INTTM0n
INTCM0n3 INTCM0n3
001
1/2 cycle
INTTM0n
INTCM0n3 INTCM0n3
001
1/2 cycle
User's Manual U15195EJ5V0UD
INTTM0n INTTM0n
INTCM0n3 INTCM0n3 INTCM0n3
Interrupt culling
1/2 cycle
INTTM0n
INTCM0n3
010
Interrupt culling
1/4 cycle
INTTM0n
INTCM0n3
010
Interrupt culling
1/4 cycle
INTTM0n
INTCM0n3
010
Interrupt culling
1/4 cycle
INTTM0n INTTM0n INTTM0n INTTM0n
INTCM0n3 INTCM0n3 INTCM0n3
000
Interrupt culling
1/1 cycle
INTTM0n INTTM0n INTTM0n INTTM0n INTTM0n
INTCM0n3 INTCM0n3 INTCM0n3
000
Interrupt culling
1/1 cycle
INTCM0n3
INTCM0n3
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