ATMEGA48PA-MNR Atmel, ATMEGA48PA-MNR Datasheet - Page 356

• Manufacturer Part Number: ATMEGA48PA-MNR
• Description: MCU AVR 4KB FLASH 20MHZ 28QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA48PA-MNR

• 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: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 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: *
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SPI, UART, I2C
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 23
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 85 C
• Processor To Be Evaluated: ATMEGA48A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

29.2.3
Example
8161D–AVR–10/09
ATmega88PA: Supply Current of IO Modules
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 356
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled
at V
to add 13.6% for the TIMER1, 26.3% for the ADC, and 21.5% for the SPI module. Reading from
Figure 29-52 on page 353
and F = 1MHz. The total current consumption in idle mode with TIMER1, ADC, and SPI enabled,
gives:
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
CC
= 2.0V and F = 1MHz. From
for other V
ATmega88PA: Additional Current Consumption for the different I/O modules
(absolute values)
ATmega88PA: Additional Current Consumption (percentage) in Active and Idle
mode
Typical numbers
3.0 uA
6.1 uA
5.2 uA
3.8 uA
Additional Current consumption
compared to Active with external
clock (see
351
351)
1.8%
3.9%
2.9%
2.1%
0.8%
3.5%
4.2%
1.5 uA
6.3 uA
5.2 uA
V
CC
and
I
= 2V, F = 1 MHz
CC
CC
, we find that the idle current consumption is ~0.027 mA at V
total
Figure 29-48 on page
and frequency settings than listed in
≈
Figure 29-47 on page
0.027 mA (1 + 0.136 + 0.263 + 0.215)
ATmega48PA/88PA/168PA/328P
Table 29-4 on page
⋅
21.3 uA
45.4 uA
35.2 uA
25.6 uA
9.8 uA
40.0 uA
48.7 uA
V
CC
= 3V, F = 4 MHz
”Power Reduction Register” on page 42
Additional Current consumption
compared to Idle with external
clock (see
353
354)
11.4%
24.4%
18.6%
13.6%
5.2%
21.5%
26.3%
356, third column, we see that we need
and
Figure 29-53 on page
≈
Table 29-3 on page
Figure 29-52 on page
0.043 mA
97.9 uA
219.0 uA
149.5 uA
110.0 uA
39.6 uA
199.6 uA
247.0 uA
V
CC
= 5V, F = 8 MHz
356.
Table 29-4
CC
= 2.0V
356
for