ATMEGA644PA-MUR Atmel, ATMEGA644PA-MUR Datasheet - Page 333
ATMEGA644PA-MUR
Manufacturer Part Number
ATMEGA644PA-MUR
Description
IC MCU AVR 64K FLASH 44VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644PA-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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27.2
8272A–AVR–01/10
Speed Grades
Maximum frequency is depending on V
V
Figure 27-1. Maximum Frequency vs. V
164A/164PA/324A/324PA/644A/644PA/1284/1284P
CC
curve is linear between 1.8V < V
20 MHz
10 MHz
4 MHz
1.8V
2.7V
CC
CC.
< 2.7 and between 2.7V < V
CC
As shown in
,
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P
Safe Operating Area
Figure
27-1, the Maximum Frequency vs.
4.5V
CC
< 4.5.
5.5V
333
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