Chapter 6
Power Supply Voltage Detection
VI - 2
Overview
6.1
Overview
6.1.1
Power Supply Voltage Detection Overview
This LSI has the power supply voltage detector (PSVD) to detect power supply voltage and generate interrupt.
PSVD compares the power supply voltage (V
DD30
) and the detection voltage (V
LVI
), and generates the interrupt
(LVIIRQ) when the level of V
DD30
crosses that of V
LVI
. V
LVI
can be changed between from 1.1 V to 2.9 V with
the LVICTR0 register.
PSVD operates regardless of the value of the CPU control register.
Figure:6.1.1 Power Supply Detection Waveform
V
LVI
- Power supply voltage detection function is OFF (LVION=0)
(1) Though power supply voltage (at falling) falls below the detection voltage (V
LVI
), the interrupt request is not generated and the LVIOUT bit is not cleared.
(2) Though power supply voltage (at rising) exceeds the detection voltage (V
LVI
), the interrupt request is not generated and the LVIOUT bit is not cleared.
- Power supply voltage detection function is ON (LVION=1)
(3) As power supply voltage (at falling) falls below the detection detection voltage (V
LVI
), the interrupt request is generated and the LVIOUT bit is cleared.
(4) As power supply voltage (at rising) exceeds the detection voltage (V
LVI
), the interrupt request is generated and the LVIOUT bit is set.
Interrupt request
(1) (2)
(3)
(4)
LVION
bit
Power supply
voltage (V
DD30
)
LVION set
LVIOUT
bit
Содержание MN101L Series
Страница 1: ...Cover MICROCOMPUTER MN101L MN101LR05D 04D 03D 02D LSI User s Manual Pub No 21705 015E ...
Страница 2: ......
Страница 8: ......
Страница 10: ......
Страница 11: ...Contents Contents 0 ...
Страница 22: ... Contents 11 ...
Страница 23: ...I Chapter 1 Overview 1 ...
Страница 62: ...Chapter 1 Overview I 40 Cautions for Circuit Setup ...
Страница 63: ...II Chapter 2 CPU 2 ...
Страница 94: ...Chapter 2 CPU II 32 Reset ...
Страница 95: ...III Chapter 3 Interrupts 3 ...
Страница 143: ...IV Chapter 4 Clock Mode Voltage Control 4 ...
Страница 175: ...V Chapter 5 Watchdog Timer WDT 5 ...
Страница 180: ...Chapter 5 Watchdog Timer WDT V 6 Operation ...
Страница 181: ...VI Chapter 6 Power Supply Voltage Detection 6 ...
Страница 189: ...VII Chapter 7 I O Port 7 ...
Страница 248: ...Chapter 7 I O Port VII 60 Port 8 ...
Страница 249: ...VIII Chapter 8 8 bit Timer 8 ...
Страница 282: ...Chapter 8 8 bit Timer VIII 34 8 bit Timer Cascade Connection ...
Страница 283: ...IX Chapter 9 16 bit Timer 9 ...
Страница 346: ...Chapter 9 16 bit Timer IX 64 IGBT Output with Dead Time ...
Страница 347: ...X Chapter 10 General Purpose Time Base Free Running Timer 10 ...
Страница 361: ...XI Chapter 11 RTC Time Base Timer RTC TBT 11 ...
Страница 371: ...XII Chapter 12 Real Time Clock RTC 12 ...
Страница 389: ...XIII Chapter 13 Serial Interface 13 ...
Страница 458: ...Chapter 13 Serial Interface XIII 70 IIC Communication ...
Страница 459: ...XIV Chapter 14 DMA Controller 14 ...
Страница 472: ...Chapter 14 DMA Controller XIV 14 DMA Data Transfer ...
Страница 473: ...XV Chapter 15 Buzzer 15 ...
Страница 479: ...XVI Chapter 16 A D Converter ADC 16 ...
Страница 493: ...XVII Chapter 17 LCD 17 ...
Страница 530: ...Chapter 17 LCD XVII 38 LCD Display Examples ...
Страница 531: ...XVIII Chapter 18 ReRAM 18 ...
Страница 538: ...Chapter 18 ReRAM XVIII 8 Command Library ...
Страница 539: ...XIX Chapter 19 On Board Debugger 19 ...
Страница 542: ...Chapter 19 On Board Debugger XIX 4 List of on board debugging functions ...
Страница 543: ...XX Chapter 20 Appendix 20 ...
Страница 555: ...Chapter 20 Appendix Instruction map XX 13 ...