ATMEGA32A-MNR Atmel, ATMEGA32A-MNR Datasheet - Page 206
![IC MCU AVR 32K 16MHZ 44VQFN](/photos/12/13/121316/313-44-qfn_sml.jpg)
ATMEGA32A-MNR
Manufacturer Part Number
ATMEGA32A-MNR
Description
IC MCU AVR 32K 16MHZ 44VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA32A-MU.pdf
(353 pages)
Specifications of ATMEGA32A-MNR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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21. Analog Comparator
21.1
21.2
8155C–AVR–02/11
Overview
Analog Comparator Multiplexed Input
The Analog Comparator compares the input values on the positive pin AIN0 and negative pin
AIN1. When the voltage on the positive pin AIN0 is higher than the voltage on the negative pin
AIN1, the Analog Comparator Output, ACO, is set. The comparator’s output can be set to trigger
the Timer/Counter1 Input Capture function. In addition, the comparator can trigger a separate
interrupt, exclusive to the Analog Comparator. The user can select Interrupt triggering on com-
parator output rise, fall or toggle. A block diagram of the comparator and its surrounding logic is
shown in
Figure 21-1. Analog Comparator Block Diagram
Notes:
It is possible to select any of the ADC7:0 pins to replace the negative input to the Analog Com-
parator. The ADC multiplexer is used to select this input, and consequently, the ADC must be
switched off to utilize this feature. If the Analog Comparator Multiplexer Enable bit (ACME in
SFIOR) is set and the ADC is switched off (ADEN in ADCSRA is zero), MUX2:0 in ADMUX
select the input pin to replace the negative input to the Analog Comparator, as shown in
ADC MULTIPLEXER
1. See
2. Refer to
REFERENCE
ACME
Figure
ADEN
OUTPUT
BANDGAP
placement.
Table 21-1 on page
21-1.
(1)
ACBG
Figure 1-1 on page 2
206.
and
Table 12-6 on page 59
(2)
for Analog Comparator pin
ATmega32A
Table
206
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