ATmega48PA Atmel Corporation, ATmega48PA Datasheet - Page 413
ATmega48PA
Manufacturer Part Number
ATmega48PA
Description
Manufacturer
Atmel Corporation
Specifications of ATmega48PA
Flash (kbytes)
4 Kbytes
Pin Count
32
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
23
Ext Interrupts
24
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
0.5
Eeprom (bytes)
256
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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30.4.3
30.4.3.1
8271D–AVR–05/11
ATmega88PA: 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 30-7.
Table 30-8.
It is possible to calculate the typical current consumption based on the numbers from
for other V
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled
at V
for the TIMER1, 26.3% for the ADC, and 21.5% for the SPI module. Reading from
on page
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
I
CC
CC
total
= 2.0V and F = 1MHz. From
≈
410, we find that the idle current consumption is ~0.027 mA at V
0.027 mA (1 + 0.136 + 0.263 + 0.215)
CC
and frequency settings than listed in
ATmega88PA: Additional Current Consumption for the different I/O modules
(absolute values)
ATmega88PA: Additional Current Consumption (percentage) in Active and Idle
mode
⋅
Typical numbers
3.0uA
6.1uA
5.2uA
3.8uA
Additional Current consumption
compared to Active with external
clock (see
407
408)
1.8%
3.9%
2.9%
2.1%
0.8%
3.5%
4.2%
1.5uA
5.2uA
6.3uA
V
ATmega48A/PA/88A/PA/168A/PA/328/P
CC
and
= 2V, F = 1MHz
Figure 30-143 on page
Figure 30-142 on page
Table
30-8, third column, we see that we need to add 13.6%
21.3uA
45.4uA
35.2uA
25.6uA
9.8uA
40.0uA
48.7uA
≈
V
0.043 mA
CC
= 3V, F = 4MHz
Table
”Power Reduction Register” on page 43
Additional Current consumption
compared to Idle with external
clock (see
410
410)
11.4%
24.4%
18.6%
13.6%
5.2%
21.5%
26.3%
30-7.
and
Figure 30-148 on page
Figure 30-147 on page
97.9uA
219.0uA
149.5uA
110.0uA
39.6uA
199.6uA
247.0uA
V
CC
= 5V, F = 8MHz
CC
= 2.0V and F =
Figure 30-147
Table 30-8
413
for
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