ATMEGA644A-MU Atmel, ATMEGA644A-MU Datasheet - Page 523
ATMEGA644A-MU
Manufacturer Part Number
ATMEGA644A-MU
Description
IC MCU AVR 64K FLASH 44VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644A-MU
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
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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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28.7.13
8272A–AVR–01/10
Current Consumption in Reset and Reset Pulsewidth
Figure 28-341.ATmega1284: Watchdog Timer Current vs. V
Figure 28-342.ATmega1284: Reset Supply Current vs. Low Frequency (0.1 - 1.0 MHz)
164A/164PA/324A/324PA/644A/644PA/1284/1284P
0.08
0.06
0.04
0.02
8.5
7.5
6.5
5.5
4.5
3.5
2.5
1.5
0.1
0
1.5
0
0.1
2
0.2
2.5
0.3
3
0.4
Frequency (MHz)
V
CC
0.5
3.5
(V)
0.6
4
0.7
CC
4.5
0.8
5
0.9
5.5
1
-40 °C
25 °C
85 °C
5.5 V
5.0 V
4.5 V
4.0 V
3.3 V
2.7 V
1.8 V
523
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