 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
ATMEGA16 датащи(PDF) 211 Page - ATMEL Corporation |
|
|
|||||||||||||||||||||||||||||
ATMEGA16 датащи(HTML) 211 Page - ATMEL Corporation |
|
|
211 / 315 page  211 ATmega16(L) 2466E–AVR–10/02 Example: ADMUX = 0xED (ADC3 - ADC2, 10x gain, 2.56V reference, left adjusted result) Voltage on ADC3 is 300 mV, voltage on ADC2 is 500 mV. ADCR = 512 * 10 * (300 - 500) / 2560 = -400 = 0x270 ADCL will thus read 0x00, and ADCH will read 0x9C. Writing zero to ADLAR right adjusts the result: ADCL = 0x70, ADCH = 0x02. ADC Multiplexer Selection Register – ADMUX • Bit 7:6 – REFS1:0: Reference Selection Bits These bits select the voltage reference for the ADC, as shown in Table 82. If these bits are changed during a conversion, the change will not go in effect until this conversion is complete (ADIF in ADCSRA is set). The internal voltage reference options may not be used if an external reference voltage is being applied to the AREF pin. • Bit 5 – ADLAR: ADC Left Adjust Result The ADLAR bit affects the presentation of the ADC conversion result in the ADC Data Register. Write one to ADLAR to left adjust the result. Otherwise, the result is right adjusted. Changing the ADLAR bit will affect the ADC data register immediately, regard- Table 81. Correlation between Input Voltage and Output Codes VADCn Read code Corresponding Decimal Value V ADCm + VREF/GAIN 0x1FF 511 V ADCm + 0.999 VREF/GAIN 0x1FF 511 VADCm + 0.998 VREF/GAIN 0x1FE 510 ... ... ... V ADCm + 0.001 VREF/GAIN 0x001 1 VADCm 0x000 0 V ADCm - 0.001 VREF/GAIN 0x3FF -1 ... ... ... VADCm - 0.999 VREF/GAIN 0x201 -511 V ADCm - VREF/GAIN 0x200 -512 Bit 765 432 10 REFS1 REFS0 ADLAR MUX4 MUX3 MUX2 MUX1 MUX0 ADMUX Read/Write R/W R/W R/W R/W R/W R/W R/W R/W Initial Value 0 0 0 0 0 0 0 0 Table 82. Voltage Reference Selections for ADC REFS1 REFS0 Voltage Reference Selection 0 0 AREF, Internal Vref turned off 0 1 AVCC with external capacitor at AREF pin 10 Reserved 1 1 Internal 2.56V Voltage Reference with external capacitor at AREF pin |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
