ATAVRMC321 Atmel, ATAVRMC321 Datasheet - Page 146
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ATAVRMC321
Manufacturer Part Number
ATAVRMC321
Description
KIT EVAL MOTOR CTRL LOW COST
Manufacturer
Atmel
Series
AVR®r
Specifications of ATAVRMC321
Main Purpose
Power Management, Motor Control
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
ATtinyx61
Primary Attributes
3-Ph BLDC, Brushed DC, Stepper Motor- Controller Board
Secondary Attributes
Includes ATAVRMC300 Power Driver Board
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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ATtiny261/461/861
Figure 15-3. ADC Prescaler
When initiating a single ended conversion by setting the ADSC bit in ADCSRA, the conversion
starts at the following rising edge of the ADC clock cycle.
A normal conversion takes 13 ADC clock cycles. The first conversion after the ADC is switched
on (ADEN in ADCSRA is set) takes 25 ADC clock cycles in order to initialize the analog circuitry,
as shown in
Figure 15-4. ADC Timing Diagram, First Conversion (Single Conversion Mode)
The actual sample-and-hold takes place 1.5 ADC clock cycles after the start of a normal conver-
sion and 13.5 ADC clock cycles after the start of an first conversion. See
conversion is complete, the result is written to the ADC Data Registers, and ADIF is set. In Sin-
gle Conversion mode, ADSC is cleared simultaneously. The software may then set ADSC again,
and a new conversion will be initiated on the first rising ADC clock edge.
Cycle Number
ADC Clock
ADEN
ADSC
ADIF
ADCH
ADCL
Figure 15-4
1
2
MUX and REFS
Update
ADEN
START
below.
12
ADPS0
ADPS1
ADPS2
13
CK
14
15
Sample & Hold
16
Reset
First Conversion
17
7-BIT ADC PRESCALER
18
ADC CLOCK SOURCE
19
20
21
22
Conversion
Complete
23
24
25
Figure
Sign and MSB of Result
Next
Conversion
1
LSB of Result
15-5. When a
2588E–AVR–08/10
2
MUX and REFS
Update
3
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