ML620Q503/Q504 User's Manual
Chapter 28 Voltage Level Supervisor
FEUL620Q504 28-9
Figure 28-3 shows an example of the operation timing diagram when detecting with sampling and setting the
VLS reset issue.
①
Set ENVLS to “1” from the CPU to turn on the VLS.
②
The VLS analog output is stabilized.
③
V
DD
becomes lower than the specified threshold voltage (V
VLS
).
④
The ready flag (VLSRF) is set to “1” after T16KHZ2
φ
. At the same time, the voltage level
detection flag (VLSF) is set to “1” to issue a VLS reset because the VLS analog voltage is lower
than the threshold voltage (V
VLS
).
⑤
V
DD
returns to higher than the threshold voltage of rise (V
VLS
+H
VLS
).
⑥
Because it is judged that a VLS analog voltage sampled at T16KHZ is higher than the threshold
voltage (V
VLS
+H
VLS
), the voltage level detection flag (VLSF) is set to “0” to release the VLS reset.
⑦
Set ENVLS to “0” from the CPU to turn off the VLS.
Figure 28-3 Operation Timing Diagram When Detecting without Sampling and Setting VLS Reset
Issue
Sampling Clock
(T16KHZ)
①
↓
Stabilization
time
ENVLS
Threshold voltage
V
VLS
VLS analog output
V
SS
V
DD
Ready flag: VLSRF
↓
↓
↓
↓
Detection flag: VLSF
VLS reset
↓
↓
V
VLS
+H
VLS
(rise)
(fall)
②
③
④
⑤
⑥
⑦
Содержание LAPIS SEMICONDUCTOR ML620Q503
Страница 2: ...ML620Q503 Q504 User s Manual Issue Date Apr 16 2015 FEUL620Q504 01...
Страница 18: ...Chapter 1 Overview...
Страница 32: ...Chapter 2 CPU and Memory Space...
Страница 44: ...Chapter 3 Reset Function...
Страница 50: ...Chapter 4 Power Management...
Страница 70: ...Chapter 5 Interrupts...
Страница 134: ...Chapter 6 Clock Generation Circuit...
Страница 161: ...Chapter 7 Time Base Counter...
Страница 170: ...Chapter 8 Timers...
Страница 183: ...Chapter 9 Function Timer FTM...
Страница 231: ...Chapter 10 Watchdog Timer...
Страница 239: ...Chapter 11 Synchronous Serial Port SSIO...
Страница 251: ...Chapter 12 Synchronous Serial Port with FIFO SSIOF...
Страница 283: ...Chapter 13 UART...
Страница 303: ...Chapter 14 UART with FIFO UARTF...
Страница 327: ...Chapter 15 I2 C Bus Interface...
Страница 344: ...Chapter 16 Port XT...
Страница 350: ...Chapter 17 Port 0...
Страница 361: ...Chapter 18 Port 1...
Страница 368: ...Chapter 19 Port2...
Страница 379: ...Chapter 20 Port 3...
Страница 395: ...Chapter 21 Port 4...
Страница 410: ...Chapter 22 Port 5...
Страница 426: ...Chapter 23 Melody Driver...
Страница 439: ...Chapter 24 RC Oscillation type A D Converter RC ADC...
Страница 462: ...Chapter 25 Successive Approximation Type A D Converter SA ADC...
Страница 479: ...Chapter 26 Analog Comparator...
Страница 489: ...Chapter 27 Flash Memory Control...
Страница 505: ...Chapter 28 Voltage Level Supervisor VLS...
Страница 517: ...Chapter 29 LLD circuit...
Страница 519: ...Chapter 30 On Chip Debug Function...
Страница 522: ...Appendixes...
Страница 552: ...Revision History...