
ML62Q1000 Series User's Manual
Chapter 22 Voltage Level Supervisor
FEUL62Q1000
22-12
22.3.1.1 Reset Output
Figure 22-3 shows the operation timing chart when the VLS0 reset output without sampling is specified.
Figure 22-3 Operation Timing Chart When the VLS0 Reset Output without Sampling is specified
The operation shown in Figure 22-3 is described below:
(1)
Choose a detection voltage by the VLS0LV3 to VLS0LV0 bits of the VLS0LV register.
(2)
Choose "without sampling" 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)
Set the VLS0EN bit of the VLS0CON register to "1" (VLS0 starts operation in the supervisor mode).
(6)
After approximately 300 μs (approx. 300 μs + sampling clock cycle x 3 when sampling is enabled) passed, the
detection result of VLS0 becomes stabilized and the VLS0RF bit of the VLSCON register is set to "1" (value of the
voltage level supervisor bit (VLS0F) is read in software) (*
1
).
(7)
When the power voltage (V
DD
) becomes below the threshold voltage V
VLSF
, the VLS0F bit is set to "1" to generate
the VLS0 interrupt or VLS0 reset.
(8)
If V
DD
becomes equal to or above the threshold voltage (V
VLSR
), the VLS0F bit is cleared to "0" to release the VLS0
reset.
(9)
Write "0" to the VLS0EN bit to disable VLS0 operation.
*
1
: VLS0F bit/interrupt/reset is masked until the VLS0RF bit becomes "1".
(1)~(5)
↓
Stabilization
time
V
VLSF
V
SS
(6)
↓
(7)
↓
(8)
↓
(9)
↓
V
VLSR
VLS0EN bit
Threshold voltage (at rise)
VLS0 comparator
comparison result
V
DD
VLS0RF
VLS0F
VLS0 reset
(at fall)
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...