Chapter 16
A/D Converter (ADC)
XVI
- 8
Operation
16.3 Operation
The following shows the procedures for setting ADC circuit.
1. Set the analog input terminal.
Set the analog input terminal by ANEN0.
* Be sure to set Analog input control register before applying analog voltage to the terminals.
2. Select the analog input terminal.
Select the analog input pin from AN7 to AN0 by setting the ANCTR1.ANCHS2 to 0.
3. Select the A/D conversion clock.
Select the A/D conversion clock by setting the ANCTR0.ANCK2-0. Set the conversion clock (T
ADCLK
)
between 750 ns and 100
µ
s
depending on the resonator to be used.
4. Set the sample hold time.
Set the sample hold time by the ANCTR0.ANSH1-0.
Select the appropriate value based on the analog impedance.
* The steps of (2) to (4) can be performed in random order. The steps of (3) and (4) can be
operated simultaneously.
5. Set the A/D resistor ladder.
Set the ANCTR0.ANLADE to "1" to apply current to the resistor ladder so that ADC will be in standby condi-
tion.
6. Select the ADC activation factor, then start A/D conversion.
Set the ANCTR2.ANST to "1" to enable the ADC or set the ANCTR2.ANSTSEL1-0 to "01" or "10" to enable
the ADC by external trigger factor.
7. A/D conversion.
A/D conversion is compared and determined sequentially by MSB after the sampling in the sample hold time
(which is set in the step (4)).
8. Complete A/D conversion.
After A/D conversion is completed, the result of the conversion is stored in ANBUF0 and ANBUF1, A/D con-
version interrupt is generated and the ANCTR2.ANST is cleared to "0".
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 ...