ATMEGA649-16MI Atmel, ATMEGA649-16MI Datasheet - Page 385
ATMEGA649-16MI
Manufacturer Part Number
ATMEGA649-16MI
Description
IC AVR MCU FLASH 64K 5V 64QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA649-16MI
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
53
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-MLF®, 64-QFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Table of Contents
2552K–AVR–04/11
1
2
3
4
5
6
7
8
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 4
Resources ................................................................................................. 9
Data Retention .......................................................................................... 9
About Code Examples ............................................................................. 9
AVR CPU Core ........................................................................................ 10
AVR ATmega329/3290/649/6490 Memories ......................................... 18
System Clock and Clock Options ......................................................... 26
2.1
2.2
2.3
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
7.1
7.2
7.3
7.4
7.5
8.1
8.2
8.3
8.4
8.5
8.6
Block Diagram ...................................................................................................4
Comparison between ATmega329, ATmega3290, ATmega649 and
ATmega6490 6
Pin Descriptions .................................................................................................6
Overview ..........................................................................................................10
Architectural Overview .....................................................................................10
ALU – Arithmetic Logic Unit .............................................................................11
AVR Status Register ........................................................................................12
General Purpose Register File ........................................................................13
Stack Pointer ...................................................................................................14
Instruction Execution Timing ...........................................................................15
Reset and Interrupt Handling ...........................................................................15
In-System Reprogrammable Flash Program Memory .....................................18
SRAM Data Memory ........................................................................................19
EEPROM Data Memory ..................................................................................20
I/O Memory ......................................................................................................21
Register Description ........................................................................................22
Clock Systems and their Distribution ...............................................................26
Clock Sources .................................................................................................27
Crystal Oscillator .............................................................................................28
Low-frequency Crystal Oscillator .....................................................................29
Calibrated Internal RC Oscillator .....................................................................29
External Clock .................................................................................................31
ATmega329/3290/649/6490
i
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