ATMEGA88A-MMH Atmel, ATMEGA88A-MMH Datasheet - Page 362
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ATMEGA88A-MMH
Manufacturer Part Number
ATMEGA88A-MMH
Description
IC MCU AVR 8K FLASH 28QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA88A-MMH
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K 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
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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29.2.3
29.2.3.1
8271C–AVR–08/10
ATmega48PA: Supply Current of IO Modules
Example
The tables and formulas below can be used to calculate the additional current consumption for
the different I/O modules in Active and Idle mode. The enabling or disabling of the I/O modules
are controlled by the Power Reduction Register. See
details.
Table 29-3.
Table 29-4.
It is possible to calculate the typical current consumption based on the numbers from
on page 362
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled
at V
to add 11.2% for the TIMER1, 22.1% for the ADC, and 17.6% for the SPI module. Reading from
Figure 29-53 on page 359
and F = 1MHz. The total current consumption in idle mode with TIMER1, ADC, and SPI enabled,
gives:
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
I
CC
CC
total
= 2.0V and F = 1MHz. From
≈
0.028 mA (1 + 0.112 + 0.221 + 0.176)
for other V
ATmega48PA: Additional Current Consumption for the different I/O modules
(absolute values)
ATmega48PA: Additional Current Consumption (percentage) in Active and Idle
mode
⋅
Typical numbers
2.9 uA
6.0 uA
5.0 uA
3.6 uA
Additional Current consumption
compared to Active with external
clock (see
357
357)
1.8%
3.9%
2.9%
2.1%
0.8%
3.3%
4.2%
1.4 uA
6.1 uA
5.0 uA
V
CC
and
= 2V, F = 1 MHz
CC
, we find that the idle current consumption is ~0.028 mA at V
Figure 29-49 on page
and frequency settings than listed in
Figure 29-48 on page
Table 29-4 on page
20.7 uA
44.8 uA
34.5 uA
24.4 uA
9.5 uA
38.0 uA
47.4 uA
≈
V
0.042 mA
CC
= 3V, F = 4 MHz
”Power Reduction Register” on page 42
Additional Current consumption
compared to Idle with external
clock (see
359
360)
11.4%
20.6%
15.7%
11.2%
4.2%
17.6%
22.1%
362, third column, we see that we need
and
Figure 29-54 on page
Table 29-3 on page
Figure 29-53 on page
97.4 uA
219.7 uA
141.3 uA
107.7 uA
38.4 uA
190.4 uA
244.7 uA
V
CC
= 5V, F = 8 MHz
362.
Table 29-4
CC
= 2.0V
362
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