Chapter 4
Clock/ Mode/ Voltage Control
Voltage Control
IV - 29
4.3.4
Operation
Voltage Transition of VDD18 by Program
Figure:4.3.1 shows the example of voltage transition of VDD18 by program.
When SLOW mode, the PWCTR0.VDDLV1-0 are set to change the output voltage, VDD18 and achieve low-
power consumption or high-speed operation depending on the operating frequency.
Voltage transition cannot be set in NORMAL mode. It is also impossible to change the voltage from 1.3 V to 1.8
V and from 1.8 V to 1.3 V. After updating the PWCTR0.VDDLV1-0, CPU clock is halted for the time set in the
PWCTR1.PWUPTM2-0 while the voltage is boosted during i) and iii) shown in the Figure:4.3.1. Although CPU
clock is not halted while the voltage is stepped down during ii) and iv) shown in the Figure:4.3.1, it does not affect
the operation.
Figure:4.3.1 Voltage Transition of VDD18 by Program
The setting example to change VDD18 from 1.1 V to 1.8 V at iii) in Figure:4.3.1 is shown below.
CPU outage in voltage transition: 32/f
SCLK
(f
SCLK
= 32.768 kHz, 977
µ
s)
..
Be sure to execute the setting in SLOW mode.
..
Step
Setting
Register name
Description
1
Set CPU outage in voltage transition
PWCTR1
Set PWUPTM2-0 to "011".
2
Set output voltage, VDD18
PWCTR0
Set VDDLV1-0 to "10".
3
NOP instruction
-
Insert 3 NOP instructions.
4
Transition to NORMAL mode
CPUM
Set to "00000111".
1.1 V
1.3 V
1.1 V
V
DD30
10 MHz
MAX operating speed
Power ON
40 kHz
40 kHz
40 kHz
VDD30
VDD18 output voltage
VDD18 output
1.8 V
Operating mode
SLOW
NORMAL
SLOW
i)
ii)
iii)
iv)
1 MHz
1.8 V
1.1 V
SLOW
NORMAL
1.3 V
1.1 V
00
01
00
VDDLV1-0
10
00
CPU idle time
CPU idle time
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 ...