ATMEGA644A-AUR Atmel, ATMEGA644A-AUR Datasheet - Page 539
![IC MCU AVR 64K FLASH 44TQFP](/photos/6/70/67042/313-44-tqfp_sml.jpg)
ATMEGA644A-AUR
Manufacturer Part Number
ATMEGA644A-AUR
Description
IC MCU AVR 64K FLASH 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644A-AUR
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-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 539 of 581
- Download datasheet (27Mb)
8272A–AVR–01/10
Figure 28-371.ATmega1284P: I/O Pin Input Threshold vs. V
Figure 28-372.ATmega1284P: I/O Pin Input Hysteresis vs. V
164A/164PA/324A/324PA/644A/644PA/1284/1284P
0.55
0.45
0.35
0.25
0.6
0.5
0.4
0.3
2.5
1.5
0.5
2
1
0
1.5
1.5
2
2
2.5
2.5
3
3
V
V
CC
CC
3.5
3.5
(V)
(V)
4
4
CC
CC
(V
4.5
4.5
IL
, I/O Pin Read as ‘0’)
5
5
5.5
5.5
-40 °C
-40 °C
85 °C
25 °C
85 °C
25 °C
539
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