ATMEGA1284P-AU Atmel, ATMEGA1284P-AU Datasheet - Page 340

• Manufacturer Part Number: ATMEGA1284P-AU
• Description: MCU AVR 128K ISP FLASH 44-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA1284P-AU

• 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: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 16K 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: 44-TQFP, 44-VQFP
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 16 KB
• Interface Type: 2-Wire, SPI, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRRAVEN, ATAVRRZUSBSTICK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Package: 44TQFP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Rom Size: 4 KB
• Height: 1.05 mm
• Length: 10.1 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V
• Width: 10.1 mm
• Controller Family/series: AVR MEGA
• No. Of I/o's: 32
• Eeprom Memory Size: 4KB
• Ram Memory Size: 16KB
• Cpu Speed: 20MHz
• Rohs Compliant: Yes
• For Use With: ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK600 - DEV KIT FOR AVR/AVR32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

27.3
Example
8059D–AVR–11/09
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 46
Table 27-1.
Table 27-2.
It is possible to calculate the typical current consumption based on the numbers from
on page 340
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 27-7 on page 337
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.
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 in
Additional Current consumption
compared to Active with external
clock (see
334
V
CC
and
= 2V, F = 1 MHz
CC
, we find that the idle current consumption is ~0.075 mA at V
13.5 µA
3.0 µA
2.9 µA
7.5 µA
4.0 µA
6.0 µA
4.2 µA
1.7 µA
5.7 µA
Figure 27-2 on page
and frequency settings than listed in
Figure 27-1 on page
0.9%
0.9%
2.3%
1.1%
1.8%
1.2%
0.5%
3.0%
2.0%
Table 27-2 on page
V
CC
335)
= 3V, F = 4 MHz
19.2 µA
19.2 µA
49.3 µA
24.7 µA
39.7 µA
26.4 µA
11.6 µA
54.7 µA
40.6 µA
Additional Current consumption
compared to Idle with external
clock (see
337
”PRR0 – Power Reduction Register 0” on
340, third column, we see that we need
and
Figure 27-7 on page
Table 27-1 on page
Figure 27-6 on page
V
15.4%
12.1%
19.8%
13.2%
6.0%
6.0%
7.5%
8.0%
3.6%
CC
ATmega1284P
= 5V, F = 8 MHz
230.3 µA
105.5 µA
176.3 µA
113.7 µA
212.2 µA
87.7 µA
88.5 µA
54.3 µA
273 µA
337)
340.
Table 27-2
CC
= 2.0V
340