ATMEGA1281-16MU Atmel, ATMEGA1281-16MU Datasheet - Page 390

• Manufacturer Part Number: ATMEGA1281-16MU
• Description: IC MCU AVR 128K FLASH 64-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA1281-16MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-MLF®, 64-QFN
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 8 KB
• Interface Type: 2-Wire, SPI, UART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 54
• Number Of Timers: 6
• Operating Supply Voltage: 4.5 V to 5.5 V
• 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, ATAVRRZ541, ATAVRRAVEN, ATAVRRZRAVEN, ATAVRRZUSBSTICK, ATAVRISP2, ATAVRRZ201
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 channel
• For Use With: ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFPATAVRDB101 - MODULE DISPLAY LCD/RGB BACKLIGHT770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

31.2.1.1
2549M–AVR–09/10
Example 1
Table 31-2.
It is possible to calculate the typical current consumption based on the numbers from
on page 389
Calculate the expected current consumption in idle mode with USART0, TIMER1, and TWI
enabled at V
add 17% for the USART0, 24% for the TWI, and 10% for the TIMER1 module. Reading from
ure 31-6 on page
= 1 MHz. The total current consumption in idle mode with USART0, TIMER1, and TWI enabled,
gives:
I
CC
PRR bit
PRUSART3
PRUSART2
PRUSART1
PRUSART0
PRTWI
PRTIM5
PRTIM4
PRTIM3
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
total
≈
0.15mA
CC
for other V
Additional Current Consumption (percentage) in Active and Idle mode
•
= 2.0V and F = 1 MHz. From
Additional Current consumption
compared to Active with external clock
3.0%
3.0%
3.0%
3.0%
4.4%
1.8%
1.8%
1.8%
4.3%
1.8%
1.5%
3.3%
4.5%
(
387, we find that the idle current consumption is ~0.15 mA at V
1
+
0.17
CC
+
and frequency settings than listed in
0.24
+
ATmega640/1280/1281/2560/2561
0.10
)
≈
0.227mA
Table
31-2, third column, we see that we need to
Additional Current consumption
compared to Idle with external clock
17%
17%
17%
17%
24%
10%
10%
10%
23%
10%
8.0%
18%
24%
Table
31-2.
CC
= 2.0V and F
Table 31-1
Fig-
390