ATMEGA644V-10MU Atmel, ATMEGA644V-10MU Datasheet - Page 332

• Manufacturer Part Number: ATMEGA644V-10MU
• Description: IC AVR MCU FLASH 64K 44-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644V-10MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K 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-VQFN Exposed Pad
• Package: 44QFN EP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 10 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 32
• Interface Type: JTAG/SPI/TWI/USART
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Processor Series: ATMEGA64x
• Core: AVR8
• Data Ram Size: 4 KB
• Maximum Clock Frequency: 20 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• For Use With: ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Example
27.4
332
Power-down Supply Current
ATmega644
Table 27-2.
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 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 27-6 on page
= 1 MHz. The total current consumption in idle mode with USART0, TIMER1, and TWI enabled,
gives:
Figure 27-11. Power-down Supply Current vs. V
I
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
CC
total
≈
0.11mA
CC
2.5
1.5
0.5
3
2
1
0
CC
and frequency settings than listed in
1.5
Additional Current Consumption (percentage) in Active and Idle mode
= 2.0V and F = 1 MHz. From
•
(
329, we find that the idle current consumption is ~0.11 mA at V
1
Additional Current consumption
compared to Active with external
clock (see
326
3.0%
4.4%
4.3%
1.8%
1.5%
3.3%
4.5%
+
0.117
and
2
Figure 27-2 on page
+
Figure 27-1 on page
0.24
2.5
+
0.10
WATCHDOG TIMER DISABLED
)
3
≈
0.166mA
V
Table
327)
CC
3.5
(V)
CC
Table
(Watchdog Timer Disabled)
27-2, third column, we see that we need to
Additional Current consumption
compared to Idle with external
clock (see
329
17%
24%
23%
10%
8.0%
18%
24%
4
27-2.
and
Figure 27-7 on page
4.5
Figure 27-6 on page
5
5.5
CC
329)
-40°C
2593N–AVR–07/10
85°C
25°C
= 2.0V and F
Table 27-1
Fig-