Chapter 9
16-bit Timer
IX
- 38
16-bit High-Precision PWM Output (with Continuously Variable Period/Duty)
9.7.2
Setup Example
High Precision PWM Output Setup Example
Here is an example that, using Timer 7, the PWM output waveform with the 1/4 duty cycle and 400 Hz is output
from TM7IO output pin. HCLK/2 (at f
HCLK
= 8 MHz) is selected as a clock source.
The setup procedure and its description are shown below.
Figure:9.7.4 Output Waveform of TM7IO output pin
Step
Setting
Register
Description
1
Disable the timer counter
TM7MD.TM7EN = 0
Disable the timer count operation.
2
Select the timer output pin
TMIOEN1.TM7OEN = 1
Select the timer output pin.
[Chapter 7 I/O Port]
3
P0DIR.P0DIR4 = 1
4
Set the timer mode register
TM7MD2.TM7PWM = 1
Select the PWM output.
5
TM7MD2.TM7BCR = 1
TM7MD2.T7PWMSL = 1
Select the TM7BC clear source and the duty determination
source of PWM output.
6
TM7MD1.TM7CK1-0 = 00
TM7MD1.TM7PS1-0 = 01
Select HCLK/2 as the count clock source.
7
Set the PWM cycle
TM7PR1 = 0x270F
Set the cycle PWM output.
Setup value: 10000 - 1 = 9999 (0x270F)
8
Set the "High" period of PWM
TM7PR2 = 0x09C3
Set the "High" period of PWM output.
Setup value: 10000 / 4 - 1 = 2499 (0x09C3)
9
Enable the timer counter
TM7MD1.TM7EN = 1
Enable the timer count operation.
TM7IO output
400 Hz
Содержание MN101L Series
Страница 1: ...Cover MICROCOMPUTER MN101L MN101LR05D 04D 03D 02D LSI User s Manual Pub No 21705 015E ...
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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 ...