ATMEGA644A-AU Atmel, ATMEGA644A-AU Datasheet - Page 490
![IC MCU AVR 64K FLASH 44TQFP](/photos/6/70/67042/313-44-tqfp_sml.jpg)
ATMEGA644A-AU
Manufacturer Part Number
ATMEGA644A-AU
Description
IC MCU AVR 64K FLASH 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644A-AU
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
Company:
Part Number:
ATMEGA644A-AU
Manufacturer:
Atmel
Quantity:
135
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8272A–AVR–01/10
Figure 28-278.ATmega644PA: BOD Threshold vs. Temperature (V
Figure 28-279.ATmega644PA: Calibrated Bandgap Voltage vs. V
164A/164PA/324A/324PA/644A/644PA/1284/1284P
1.086
1.084
1.082
1.078
1.076
1.074
1.072
1.068
1.066
1.08
1.07
1.84
1.83
1.82
1.81
1.79
1.78
1.77
1.76
1.8
1.5
-50
-40
-30
2
-20
2.5
-10
0
3
10
Temperature (°C)
20
V
Rising Vcc
Falling Vcc
CC
3.5
(V)
30
40
4
50
60
4.5
CC
70
BOT
= 1.8V)
80
5
90
100
5.5
85 °C
-40 °C
25 °C
490
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