ATTINY44A-MMHR Atmel, ATTINY44A-MMHR Datasheet - Page 137
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
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8183C–AVR–03/11
this mode, the sample-and-hold takes place two ADC clock cycles after the rising edge on the
trigger source signal. Three additional CPU clock cycles are used for synchronization logic.
Figure 16-6.
In Free Running mode, a new conversion will be started immediately after the conversion com-
pletes, while ADSC remains high. See
Figure 16-7.
Cycle Number
ADC Clock
Trigger
Source
ADATE
ADIF
ADCH
ADCL
Prescaler
Reset
Cycle Number
ADC Clock
ADSC
ADIF
ADCH
ADCL
ADC Timing Diagram, Auto Triggered Conversion
ADC Timing Diagram, Free Running Conversion
MUX and REFS
Update
1
Conversion
Complete
2
One Conversion
12
3
Sample &
Hold
4
13
Figure
5
14
6
16-7.
7
One Conversion
Next Conversion
1
Sign and MSB of Result
LSB of Result
8
9
2
MUX and REFS
Update
ATtiny24A/44A/84A
10
Conversion
Complete
3
11
Sample & Hold
12
4
13
Sign and MSB of Result
LSB of Result
Next Conversion
1
Prescaler
Reset
2
137
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