Chapter 8
8-bit Timer
8-bit Timer Cascade Connection
VIII - 33
8.8.2
Setup Example
Timer Operation Setup Example of 16-bit Cascade Connection
Here is an example of the timer function that the 16-bit timer, Timer 0 connected with Timer 1 in cascade connec-
tion, generates a periodic interrupt.
An interrupt occurs every 2500 cycles (1 ms) by selecting SYSCLK/2 (at f
SYSCLK
= 5 MHz) as a clock source.
The setup procedure and the description of each step are shown below.
Step
Setting
Register
Description
1
Disable the timer counter
(Upper 8 bits timer)
(Lower 8 bits timer)
TM0MD.TM0EN = 0
TM1MD.TM1EN = 0
Disable the timer count operation.
2
Disable the interrupt
(Upper 8 bits timer)
(Lower 8 bits timer)
TM0ICR.TM0IE = 0
TM1ICR.TM1IE = 0
Disable the timer interrupt.
2
Set the timer mode register
(Lower 8 bits timer)
TM0MD.TM0PWM = 0
TM0MD.TM0MOD = 0
Select the timer normal operation.
3
Set the cascade connection
TM1MD.TM1CAS = 1
Select the cascade connection.
3
Set the clock source
(Lower 8 bits timer)
TM0MD.TM0CK1-0 = 01
Select the prescaler as the clock source.
4
Set the prescaler
(Lower 8 bits timer)
CK0MD.TM0PSC1-0 = X0
CK0MD.TM0BAS = 1
Select SYSCLK/2.
6
Set the interrupt cycle
TM0OC = 0xC3
TM1OC = 0x09
Set the interrupt generation cycle.
Setup value: 2500 -1 (0x09C3)
6
Set the interrupt level
(Upper 8 bits timer)
TM1ICR.TM1LV1-0
Refer to [3.1.3 Maskable Interrupt Control Register Setup].
8
Enable the interrupt
(Upper 8 bits timer)
TM1ICR.TM1IE = 1
9
Enable the timer counter
(Lower 8 bits timer)
TM0MD.TM0EN = 1
Enable the timer count operation.
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 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 ...