
ML62Q1000 Series User's Manual
Chapter 22 Voltage Level Supervisor
FEUL62Q1000
22-15
Figure 22-6 shows an example of the operation timing chart when the VLS0 interrupt output with sampling is specified.
Figure 22-6 Operation Timing Diagram When the VLS0 Interrupt Output with Sampling is specified
The operation shown in Figure 22-6 is described below:
(1)
Choose a detection voltage by the VLS0LV3 to VLS0LV0 bits of the VLS0LV register.
(2)
Choose "Sampling with HSCLK" or "Sampling with LSCLK" by the VLS0SM1 and VLS0SM0 bits of the
VLS0SMP register.
(3)
Write "0x02" or "0x03" to VLS0AMD[1:0] bits of VLS0MOD register in order to choose the supervisor mode.
(4)
Choose an operation function by the VLS0SEL1 and VLS0SEL0 bits of the VLS0MOD register.
(5)
Write "1" to the VLS0EN bit to enable VLS0 operation.
(6)
Wait until the comparison result of the VLS0 comparator is stabilized.
(7)
V
DD
becomes below the threshold voltage (V
VLSF
).
(8)
Once the comparison result of the VLS0 comparator is stabilized, the VLS0RF bit is set to "1" after three cycles of
the sampling clock.
(9)
If the comparison result of the VLS0 comparator is below the threshold voltage (V
VLSF
) and this condition
continues for the duration of three cycles or more of the sampling clock, the VLS0F bit is set to "1" and the VLS0
interrupt is generated.
(10)
The comparison result of the VLS0 comparator becomes equal to or above the threshold voltage (V
VLSR
).
(11)
If the comparison result of the VLS0 comparator is equal to or above the threshold voltage (V
VLSR
) and this
condition continues for the duration of three cycles or more of the sampling clock, the VLS0F bit is cleared to "0"
and the VLS0 interrupt is generated.
(12)
Write "0" to the VLS0EN bit to disable VLS0 operation.
[Note]
Ÿ
Entering the STOP/STOP-D mode is not allowed during the VLS0 stabilization time. If entering the
STOP/STOP-D mode after the supervisor mode is enabled, make sure that the VLS0RF bit is set to "1",
then enter the STOP/STOP-D mode.
Ÿ
When VLS0 is stopped (VLS0EN bit="0") while the VDD is lower than the specified threshold voltage
(VLS0F bit="1"), the VLS0 interrupt is generated.
(1)~(5)
↓
Stabilization
time
V
VLSF
V
SS
(6)
↓
(7)
↓
(8)
↓
(9)
↓
(10)
↓
(11)
↓
V
VLSR
(12)
↓
Sampling clock
VLS0EN bit
Threshold voltage (at rise)
VLS0 comparator
comparison result
V
DD
VLS0F
VLS0 interrupt
(at fall)
VLS0RF
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...