
ML62Q1000 Series User's Manual
Chapter 8 16-Bit Timer
FEUL62Q1000 8-26
8.3.2.4
About Interrupt Request in 8-Bit Timer Mode
In the 8-bit timer mode, the same interrupt requests (TMnINT) are used for the upper side 8-bit timer and the lower side
8-bit timer.
When the upper side 8-bit timer count value matches the TMHnDH register value, or lower side 8-bit timer count value
matches the TMHnDL register value, an interrupt request is generated if any interrupt request has not been generated for
neither the upper nor lower side 8-bit timer. Table 8-3 shows interrupt request generation conditions in the 8-bit timer
mode.
Table 8-3 Interrupt Request Generation Conditions in 8-Bit Timer Mode.
Condition
Interrupt request
(TMnINT)
State of timer counting
State of TMHnIS register
THnHIS
THnLIS
Upper side 8-bit timer count value
matches TMHnDH register value
0
0
Generated
0
1
Not generated
1
0
1
1
Lower side 8-bit timer count value
matches TMHnDL register value
0
0
Generated
0
1
Not generated
1
0
1
1
If an 8-bit timer interrupt of the other side is generated while interrupt processing is in progress, the unprocessed
interrupt request can be generated again after resuming the main process by writing "1" to the THnIR bit of the
TMHnICL register prior to resuming the main process. Figure 8-9 shows an example of the interrupt process in the 8-bit
timer mode.
8-bit timer mode
operation start
Lower side 8-bit timer
Interrupt process
Lower side 8-bit timer
interrupt status clear
Upper side 8-bit timer
Interrupt process
Upper side 8-bit timer
interrupt status clear
Occur unhandled interrupt
requests
End
Timer interrupt
occurrence
Timer stop
THnLIC=1;
THnHIC=1;
THnIR=1;
Interrupt process
Lower side 8-bit timer
interrupt status confirmation
TMHnISL=1 ?
Yes.
No.
No.
Yes.
Upper side 8-bit timer
interrupt status confirmation
TMHnISH=1 ?
Figure 8-9 Example of Interrupt Process in 8-Bit Timer Mode
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...