ATMEGA649-16MI Atmel, ATMEGA649-16MI Datasheet - Page 388
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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ATmega329/3290/649/6490
18 SPI – Serial Peripheral Interface ......................................................... 158
19 USART0 ................................................................................................. 168
20 USI – Universal Serial Interface .......................................................... 195
21 Analog Comparator ............................................................................. 207
22 Analog to Digital Converter ................................................................ 211
17.10
17.11
18.1
18.2
18.3
18.4
18.5
19.1
19.2
19.3
19.4
19.5
19.6
19.7
19.8
19.9
19.10
19.11
20.1
20.2
20.3
20.4
20.5
21.1
21.2
21.3
22.1
22.2
22.3
Timer/Counter Prescaler ...............................................................................152
Register Description ......................................................................................153
Features ........................................................................................................158
Overview ........................................................................................................158
SS Pin Functionality ......................................................................................163
Data Modes ...................................................................................................164
Register Description ......................................................................................165
Features ........................................................................................................168
Overview ........................................................................................................168
Clock Generation ...........................................................................................169
Frame Formats ..............................................................................................172
USART Initialization .......................................................................................173
Data Transmission – The USART Transmitter ..............................................175
Data Reception – The USART Receiver .......................................................177
Asynchronous Data Reception ......................................................................181
Multi-processor Communication Mode ..........................................................185
Examples of Baud Rate Setting .....................................................................186
Register Description ......................................................................................190
Features ........................................................................................................195
Overview ........................................................................................................195
Functional Descriptions .................................................................................196
Alternative USI Usage ...................................................................................202
Register Descriptions ....................................................................................203
Overview ........................................................................................................207
Analog Comparator Multiplexed Input ...........................................................208
Register Description ......................................................................................209
Features ........................................................................................................211
Operation .......................................................................................................212
Starting a Conversion ....................................................................................213
2552K–AVR–04/11
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