Chapter 6
Power Supply Voltage Detection
Setting Example
VI - 7
6.3
Setting Example
6.3.1
PSVD Setting Example
Mode Transition Operation with PSVD
The following procedure shows that CPU transits from STOP to NORMAL mode when VDD30 exceeds 2.0 V.
Setup Procedure
Description
(1) Disable all maskable interrupts.
PSW
bp6: MIE = 0
(1) Clear the MIE bit of PSW to disable all maskable
interrupts. To change the interrupt control registers, this
step must be performed.
(2) Set the detection voltage
LVICTR0 (0x03F66)
bp4 to 0: LV4 to LV0 = 01100
(2) Set the LV4 to 0 bits of LVICTR0 to "01100" to set the
level of power supply voltage detection to 2.0 V.
(3) Enable power supply detection function
LVICTR1 (0x03F67)
bp0: LVION = 1
(3) Set the LVION bit of LVICTR1 to "1" to enable the power
supply voltage detection function.
(4) Wait for power supply voltage detection
function activation
wait 1.5 ms
(4) Wait for the power supply voltage function activation
time (1.5 ms) or more.
(5) Clear the interrupt request bit
PERI1DT (0x03FDF)
(5) Clear the interrupt request bits by reading PERI1DT and
writing the read value to PERI1DT.
Refer to [3.1.4 Group Interrupt Control Register Setup].
(6) Set the interrupt level
PERI1ICR (0x03FFE)
bp7 to 6: PERI1LV1 to 0
PSW
bp5 to 4: IM1 to IM0
(6) Set the interrupt level by the PERI1LV1 to 0 bits of
PERI1ICR. If the interrupt mask level of PSW needs to
change, set the IM1 to IM0 bits of PSW.
(7) Enable interrupt
PERI1EN (0x03FDE)
bp0: PERI1EN0 = 1
(7) Set the PERI1EN0 bit of PERI1EN to enable interrupt.
(8) Enable all maskable interrupts
PSW
bp6: MIE = 1
(8) Set the MIE bit of PSW to enable maskable interrupts.
(9) Check power supply voltage
LVICTR1 (0x03F76)
bp1: LVIOUT = 0?
(9) Monitor the LVIOUT bit of LVICTR1 periodically.
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 ...