ATMEGA644A-MUR Atmel, ATMEGA644A-MUR Datasheet - Page 466
![IC MCU AVR 64K FLASH 44VQFN](/photos/12/13/121316/313-44-qfn_sml.jpg)
ATMEGA644A-MUR
Manufacturer Part Number
ATMEGA644A-MUR
Description
IC MCU AVR 64K FLASH 44VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644A-MUR
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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8272A–AVR–01/10
Figure 28-233.ATmega644A: Watchdog Oscillator Frequency vs. V
Figure 28-234.ATmega644A: Calibrated 8 MHz RC Oscillator vs. V
164A/164PA/324A/324PA/644A/644PA/1284/1284P
119
118
117
116
115
114
113
112
111
110
109
108
8.4
8.2
7.8
7.6
7.4
7.2
8
1.5
2
2
2.5
2.5
3
3
3.5
V
V
CC
CC
3.5
(V)
(V)
4
4
4.5
4.5
CC
CC
5
5
5.5
5.5
-40 °C
-40 °C
85 °C
25 °C
25 °C
85 °C
466
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