ATMEGA644P-A15MZ Atmel, ATMEGA644P-A15MZ Datasheet - Page 338

• Manufacturer Part Number: ATMEGA644P-A15MZ
• Description: MCU AVR 64KB FLASH 16MHZ 44QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644P-A15MZ

• Package / Case: 44-VQFN Exposed Pad
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 32
• Eeprom Size: 2K x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Program Memory Size: 64KB (64K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: I²C, SPI, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

27. ATmega644P Typical Characteristics
338
ATmega164P/324P/644P
1.8
1.6
1.4
1.2
0.8
0.6
0.4
0.2
1
0
Figure 27-1. Active Supply Current vs. Frequency (0.1 - 1.0 MHz)
• The following charts show typical behavior. These figures are not tested during
• The power consumption in Power-down mode is independent of clock selection.
• The current consumption is a function of several factors such as: operating voltage, operating
• The current drawn from capacitive loaded pins may be estimated (for one pin) as C
• The parts are characterized at frequencies higher than test limits. Parts are not guaranteed to
• The difference between current consumption in Power-down mode with Watchdog Timer
0
manufacturing. All current consumption measurements are performed with all I/O pins
configured as inputs and with internal pull-ups enabled. A sine wave generator with rail-to-rail
output is used as clock source.
frequency, loading of I/O pins, switching rate of I/O pins, code executed and ambient
temperature. The dominating factors are operating voltage and frequency.
where C
I/O pin.
function properly at frequencies higher than the ordering code indicates.
enabled and Power-down mode with Watchdog Timer disabled represents the differential
current drawn by the Watchdog Timer.
0.1
L
= load capacitance, V
0.2
ACTIVE S UP P LY CURRENT vs . LOW FREQUENCY
0.3
0.4
CC
Fre que nc y (MHz )
= operating voltage and f = average switching frequency of
Te mpe ra ture = 125˚C
0.5
0.6
0.7
0.8
0.9
7674F–AVR–09/09
1
L
*
5.5 V
5.0 V
4.5 V
3.3 V
3.0 V
2.7 V
V
CC
*f