ATTINY44-20SSUR Atmel, ATTINY44-20SSUR Datasheet - Page 186
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ATTINY44-20SSUR
Manufacturer Part Number
ATTINY44-20SSUR
Description
MCU AVR 4KB FLASH 20MHZ 14SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY24-20MU.pdf
(238 pages)
Specifications of ATTINY44-20SSUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, 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)
2.7 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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21.1.1
21.2
186
Active Supply Current
ATtiny24/44/84
Example
Table 21-2.
Calculate the expected current consumption in idle mode with USI, TIMER0, and ADC enabled
at V
add 6.1% for the USI, 10.4% for TIMER0, and 28.8% for the ADC. Reading from
page 189
total current consumption in idle mode with USI, TIMER0, and ADC enabled is therefore:
Figure 21-1. Active Supply Current vs. Low Frequency (0.1 - 1.0 MHz)
I
CCTOT
PRR bit
PRTIM1
PRTIM0
PRUSI
PRADC
CC
= 2.0V and f = 1MHz. From
≈
0,04mA
, we find that current consumption in idle mode at 2V and 1MHz is about 0.04mA. The
1.2
0.8
0.6
0.4
0.2
1
0
0
Additional Current Consumption (percentage) in Active and Idle mode
×
(
1
Current consumption additional to
active mode with external clock
(see
+
0.1
0,061
Figure 21-1
0.2
+
0,104
0.3
Table 21-2 on page
+
1.8 %
2.3 %
1.4 %
6.7 %
ACTIVE SUPPLY CURRENT vs. LOW FREQUENCY
and
0,288
Figure
0.4
)
Frequency (MHz)
≈
0,06mA
21-2)
0.5
(PRR=0xFF)
0.6
186, third column, we see that we need to
Current consumption additional to
idle mode with external clock
(see
0.7
Figure 21-6
0.8
0.9
10.4 %
28.8 %
8.0 %
6.1 %
and
Figure
1
5.5 V
5.0 V
4.5 V
4.0 V
3.3 V
2.7 V
1.8 V
8006K–AVR–10/10
Figure 21-6 on
21-7)
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