ATmega164A Atmel Corporation, ATmega164A Datasheet - Page 506
ATmega164A
Manufacturer Part Number
ATmega164A
Description
Manufacturer
Atmel Corporation
Specifications of ATmega164A
Flash (kbytes)
16 Kbytes
Pin Count
44
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
32
Ext Interrupts
32
Usb Speed
No
Usb Interface
No
Spi
3
Twi (i2c)
1
Uart
2
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
No
Crypto Engine
No
Sram (kbytes)
1
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
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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29.7.3
Example
8272C–AVR–06/11
Supply Current of I/O 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
page 48
Table 29-13. Additional Current Consumption for the different I/O modules (absolute values)
Table 29-14. Additional Current Consumption (percentage) in Active and Idle mode
It is possible to calculate the typical current consumption based on the numbers from
12 on page 480
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled
at V
to add 8.0% for the TIMER1, 19.8% for the ADC, and 13.2% for the SPI module. Reading from
Figure 29-301 on page 504
and F = 1MHz. The total current consumption in idle mode with TIMER1, ADC, and SPI enabled,
gives:
PRR bit
PRUSART1
PRUSART0
PRTWI
PRTIM3
PRTIM2
PRTIM1
PRTIM0
PRADC
PRSPI
PRR bit
PRUSART1
PRUSART0
PRTWI
PRTIM3
PRTIM2
PRTIM1
PRTIM0
PRTADC
PRSPI
CC
= 2.0V and F = 1MHz. From
for details.
ATmega164A/PA/324A/PA/644A/PA/1284/P
for other V
Typical numbers in
Additional Current consumption
compared to Active with external
clock (see
and
V
CC
Figure 29-296 on page
, we find that the idle current consumption is ~0.075mA at V
= 2V, F = 1MHz
CC
13.5µA
3.0µA
2.9µA
7.5µA
4.0µA
6.0µA
4.2µA
1.7µA
5.7µA
and frequency settings than listed in
Figure 29-295 on page 501
Table 29-12 on page
0.9%
0.9%
2.3%
1.1%
1.8%
1.2%
0.5%
3.0%
2.0%
501)
V
CC
= 3V, F = 4MHz
”PRR0 – Power Reduction Register 0” on
19.2µA
19.2µA
49.3µA
24.7µA
39.7µA
26.4µA
11.6µA
54.7µA
40.6µA
480, third column, we see that we need
Additional Current consumption
compared to Idle with external clock
(see
Figure 29-301 on page
Figure 29-300 on page 503
Table 29-11 on page
15.4%
12.1%
19.8%
13.2%
V
6.0%
6.0%
7.5%
8.0%
3.6%
CC
= 5V, F = 8MHz
230.3µA
105.5µA
176.3µA
113.7µA
212.2µA
87.7µA
88.5µA
54.3µA
273µA
504)
Table 29-
CC
480.
= 2.0V
and
506
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