ATMEGA88P-20MUR Atmel, ATMEGA88P-20MUR Datasheet - Page 352

• Manufacturer Part Number: ATMEGA88P-20MUR
• Description: MCU AVR 8KB FLASH 20MHZ 32QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA88P-20MUR

• 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): 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

Example
29.2.4
8025L–AVR–7/10
Power-down Supply Current
Table 29-4.
It is possible to calculate the typical current consumption based on the numbers from
on page 351
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled
at V
to add 17.0% for the TIMER1, 17.6% for the ADC, and 17.5% for the SPI module. Reading from
Figure 29-52 on page 349
and F = 1MHz. The total current consumption in idle mode with TIMER1, ADC, and SPI enabled,
gives:
Figure 29-57. Power-Down Supply Current vs. V
PRR bit
PRTIM1
PRTIM0
PRSPI
PRADC
CC
= 2.0V and F = 1MHz. From
1.8
1.6
1.4
1.2
0.8
0.6
0.4
0.2
2
1
0
for other V
1.5
Additional Current Consumption (percentage) in Active and Idle mode
Additional Current consumption
compared to Active with external
clock (see
346
347)
2.8%
0.8%
3.0%
2.9%
and
I
2
CC
CC
, we find that the idle current consumption is ~0.055 mA at V
total
Figure 29-48 on page
and frequency settings than listed in
≈
Figure 29-47 on page
0.055 mA (1 + 0.170 + 0.176 + 0.175)
2.5
Table 29-4 on page
⋅
3
V
CC
3.5
(V)
CC
(Watchdog Timer Disabled).
ATmega48P/88P/168P
Additional Current consumption
compared to Idle with external
clock (see
349
349)
17.0%
4.6%
17.5%
17.6%
4
351, third column, we see that we need
and
Figure 29-53 on page
≈
4.5
Table 29-3 on page
Figure 29-52 on page
0.084 mA
5
5.5
-40 °C
85 °C
25 °C
351.
Table 29-4
CC
= 2.0V
352