ATTINY44A-MMHR Atmel, ATTINY44A-MMHR Datasheet - Page 128
ATTINY44A-MMHR
Manufacturer Part Number
ATTINY44A-MMHR
Description
MCU AVR 4KB FLASH 20MHZ 20QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY44A-MMHR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
12
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 128 of 286
- Download datasheet (10Mb)
15. Analog Comparator
15.1
128
Analog Comparator Multiplexed Input
ATtiny24A/44A/84A
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 can trigger a separate inter-
rupt, exclusive to the Analog Comparator. The user can select Interrupt triggering on comparator
output rise, fall or toggle. A block diagram of the comparator and its surrounding logic is shown
in
Figure 15-1.
Notes:
See
The ADC Power Reduction bit, PRADC, must be disabled in order to use the ADC input multi-
plexer. This is done by clearing the PRADC bit in the Power Reduction Register, PRR. See
“PRR – Power Reduction Register” on page 37
When the Analog to Digital Converter (ADC) is configurated as single ended input channel, it is
possible to select any of the ADC[7:0] pins to replace the negative input to the Analog Compara-
tor. 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
ADCSRB) is set and the ADC is switched off (ADEN in ADCSRA is zero), MUX[1:0] in ADMUX
select the input pin to replace the negative input to the analog comparator, as shown in
Figure
ADC MULTIPLEXER
Figure 1-1 on page 2
REFERENCE
ACME
ADEN
OUTPUT
BANDGAP
1. See
15-1.
(1)
ACBG
Table 15-1 on page
Analog Comparator Block Diagram
and
Table 10-9 on page 66
129.
for more details.
for Analog Comparator pin placement.
ACIC
8183C–AVR–03/11
To T/C1 Capture
Trigger MUX
Table
Related parts for ATTINY44A-MMHR
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
Part Number:
Description:
IC MCU AVR 4K FLASH 20MHZ 14SOIC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU AVR 4K FLASH 20MHZ 20QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 4KB FLASH 20MHZ 14SOIC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU AVR 4K FLASH 20MHZ 14PDIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 4KB FLASH 20MHZ 15UFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 4KB FLASH 20MHZ 20QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 4KB FLASH 20MHZ 20VQFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU AVR 4KB FLASH 20MHZ 14SOI
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 2KB FLASH 20MHZ 16-UFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 2KB FLASH 20MHZ 14-SOIC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
8-bit Microcontrollers - MCU 4KB FL 256B EE 256B SRAM 20MHz Hi +125C
Manufacturer:
Atmel
Part Number:
Description:
8-bit Microcontrollers - MCU 4KB FL 256B EE 256B SRAM 20MHz Hi +125C
Manufacturer:
Atmel