ATAVRMC321 Atmel, ATAVRMC321 Datasheet - Page 143
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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15.3
2588E–AVR–08/10
Operation
Figure 15-1. Analog to Digital Converter Block Schematic
The ADC converts an analog input voltage to a 10-bit digital value through successive approxi-
mation. The minimum value represents GND and the maximum value represents the voltage on
V
The voltage reference for the ADC may be selected by writing to the REFS2:0 bits in ADCSRB
and ADMUX registers. The VCC supply, the AREF pin or an internal 1.1V / 2.56V voltage refer-
ence may be selected as the ADC voltage reference. Optionally the internal 1.1V / 2.56V voltage
ADC10
AGND
CC
ADC9
ADC8
ADC7
ADC6
ADC5
ADC4
ADC3
ADC2
ADC1
ADC0
AREF
VCC
, the voltage on the AREF pin or an internal 1.1V / 2.56V voltage reference.
8-BIT DATA BUS
INTERNAL 2.56/1.1V
INTERNAL 1.1V
TEMPERATURE
REFERENCE
REFERENCE
SENSOR
REGISTER B (ADCSRB)
ADC CTRL. & STATUS
INPUT
POS.
MUX
INPUT
NEG.
MUX
ADC MULTIPLEXER
MUX DECODER
SELECT (ADMUX)
DIFFERENTIAL SELECTION
SINGLE ENDED /
+
-
GAIN
AMPLIFIER
10-BIT DAC
REGISTER A (ADCSRA)
ADC CTRL. & STATUS
MUX
ADC CONVERSION
COMPLETE IRQ
CONVERSION LOGIC
PRESCALER
SAMPLE & HOLD
COMPARATOR
+
15
-
ADC DATA REGISTER
MULTIPLEXER OUTPUT
(ADCH/ADCL)
ADC
143
0
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