AT90LS8535-4AI datasheet(71/127 Pages) ATMEL

tên linh kiện	AT90LS8535-4AI

Giải thích chi tiết về linh kiện	8-bit Microcontroller with 8K Bytes In-System Programmable Flash

PDF	127 Pages

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nhà sản xuất	ATMEL [ATMEL Corporation]

Trang chủ	http://www.atmel.com

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AT90S/LS8535

1041H–11/01

Figure 48. ADC Timing Diagram, Single Conversion

Figure 49. ADC Timing Diagram, Free Running Conversion

ADC Noise Canceler

Function

The ADC features a noise canceler that enables conversion during Idle Mode to reduce

noise induced from the CPU core. To make use of this feature, the following procedure

should be used:

Make sure that the ADC is enabled and is not busy converting. Single Conver-

sion Mode must be selected and the ADC conversion complete interrupt must be

enabled.

ADEN = 1

ADSC = 0

ADFR = 0

ADIE = 1

Table 26. ADC Conversion Time

Condition

Sample and Hold (Cycles

from Start of Conversion)

Conversion

Time (Cycles)

Conversion

Time (µs)

Extended Conversion

125 - 500

Normal Conversion

130 - 520

Sign and MSB of result

LSB of result

ADC clock

ADSC

ADIF

ADCH

ADCL

Cycle number

One Conversion

Next Conversion

Sample & hold

MUX and REFS

update

Conversion

complete

MUX and REFS

update

Sign and MSB of result

LSB of result

ADC clock

ADSC

ADIF

ADCH

ADCL

Cycle number

One Conversion

Next Conversion

Conversion

complete

Sample & hold

MUX and REFS

update

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