ATMEGA324PA-PU Atmel, ATMEGA324PA-PU Datasheet - Page 348

MCU AVR 32KB FLASH 40PDIP

ATMEGA324PA-PU

Manufacturer Part Number
ATMEGA324PA-PU
Description
MCU AVR 32KB FLASH 40PDIP
Manufacturer
Atmel
Series
AVR® ATmegar

Specifications of ATMEGA324PA-PU

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
32
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K 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
40-DIP (0.600", 15.24mm)
Controller Family/series
AVR MEGA
No. Of I/o's
32
Eeprom Memory Size
1KB
Ram Memory Size
2KB
Cpu Speed
20MHz
Rohs Compliant
Yes
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
28.1.3
Example
8272A–AVR–01/10
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 49
Table 28-1.
Table 28-2.
It is possible to calculate the typical current consumption based on the numbers from
on page 374
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled
at V
to add 8.8% for the TIMER1, 20.9% for the ADC, and 13.8% for the SPI module. Reading from
Figure 28-55 on page
and F = 1MHz. The total current consumption in idle mode with TIMER1, ADC, and SPI enabled,
gives:
164A/164PA/324A/324PA/644A/644PA/1284/1284P
PRR bit
PRUSART1
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRADC
PRSPI
PRR bit
PRUSART1
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRADC
PRSPI
CC
= 2.0V and F = 1MHz. From
for details.
for other V
Additional Current Consumption for the different I/O modules (absolute values)
Additional Current Consumption (percentage) in Active and Idle mode
Typical numbers
Additional Current consumption
compared to Active with external
clock (see
369
369)
V
CC
I
CC
371, we find that the idle current consumption is ~0.073 mA at V
and
= 2V, F = 1 MHz
CC
total
11.7 µA
3.1 µA
2.9 µA
6.1 µA
5.9 µA
3.7 µA
1.4 µA
5.1 µA
Figure 28-51 on page
and frequency settings than listed in
Figure 28-50 on page
0.073 mA (1+ 0.088 + 0.209 + 0.138)
1.5
1.5
3.2
2.9
1.8
0.7
4.4
2.9
%
%
%
%
%
%
%
%
Table 28-4 on page
V
CC
= 3V, F = 4 MHz
20.9 µA
21.6 µA
40.1 µA
26.1 µA
55.5 µA
37.9 µA
9.4 µA
44 µA
Additional Current consumption
compared to Idle with external
clock (see
371
372)
”PRR – Power Reduction Register” on
374, third column, we see that we need
and
Figure 28-56 on page
Table 28-3 on page
Figure 28-55 on page
0.105 mA
V
15.4
14.0
20.9
13.8
7.4
7.5
8.8
3.1
CC
%
%
%
%
= 5V, F = 8 MHz
%
%
%
%
205.8 µA
113.2 µA
249.5 µA
195.5 µA
96.7 µA
38.8 µA
101 µA
182 µA
374.
Table 28-4
CC
= 2.0V
348

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