Chapter 12
Real Time Clock (RTC)
XII - 18
RTC Operation
Alarm Interrupt Setup Example
The following is an example to generate the Alarm 0 interrupt at 10:23 on Saturday with the RTC function.
Set the initial time to "01:01:00 (Thursday)" in 24-hour display mode.
The setup procedure and the description of each step are shown below.
Step
Setting
Symbol
Description
1
RTC stops
RTCCTR
Set the CLKEN bit to "0".
2
Alarm interrupt disabled
RTCAL0IRQ
Set the AL0IRQSET bit to "0".
3
Display mode setting
RTCCTR
Set the HDMD bit to "0".
4
Clock data setting
-
Set the clock data to "01:01:00 (Thursday)" using the
following registers.
RTCWD
Set it to "0x04".
RTCHD
Set it to "0x01".
RTCMID
Set it to "0x01".
5
Alarm interrupt enabled
RTCAL0IRQ
Set the AL0IRQSET bit to "1".
6
Alarm detection enabled
RTCAL0IRQ
Set the AL0IRQWEN, AL0IRQHEN, and AL0IRQMIEN
bits to "1".
7
Alarm time setting
-
Set the alarm time to "10:23 (Saturday)" using the fol-
lowing registers.
AL0IRQW
Set it to "0x6".
AL0IRQH
Set it to "0x10".
AL0IRQMI
Set it to "0x23".
8
All maskable interrupts disabled
PSW *
Set the IE bit to "0".
9
Interrupt level setting
PERI0ICR *
Set the PERI0LV1-0 bits to "00".
Clear the corresponding interrupt request bit of
PERI0DT register, if it may have already been set.
Refer to [3.1.5 Set up procedure for Interrupt control
register for peripheral function group]
10
Alarm 0 Interrupt enabled
PERI0EN *
Set the PERI0EN5 bit to "1".
Refer to [Chapter 3 Interrupts]
11
Maskable interrupts enabled
PSW *
Set the IE bit to "1".
12
RTC starts
RTCCTR
Set the CLKEN bit to "1".
The RTC starts.
* For PSW, refer to [Chapter 2 CPU].
For PERI0ICR and PERI0EN, refer to [Chapter 3 Interrupts]
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 ...