ATMEGA649-16MI Atmel, ATMEGA649-16MI Datasheet - Page 329
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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28.4
28.4.1
Table 28-2.
Notes:
28.4.2
28.4.3
2552K–AVR–04/11
Factory Calibration
User
Calibration
Clock Characteristics
1. Voltage range for ATmega329V/3290V/649V/6490V.
2. Voltage range for ATmega329/3290/649/6490.
Calibrated Internal RC Oscillator Accuracy
External Clock Drive Waveforms
External Clock Drive
Calibration Accuracy of Internal RC Oscillator
Figure 28-3. External Clock Drive Waveforms
Table 28-3.
Symbol
1/t
t
t
t
t
t
Δ
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
7.3 - 8.1MHz
Frequency
8.0MHz
Parameter
Oscillator
Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period
from one clock
cycle to the next
V
External Clock Drive
IL1
V
IH1
1.8V - 5.5V
2.7V - 5.5V
1000
Min.
V
400
400
CC
0
V
3V
CC
=1.8-5.5V
(1)
(2)
Max.
2.0
2.0
4
2
ATmega329/3290/649/6490
Min.
V
125
50
50
0
CC
=2.7-5.5V
Temperature
-40°C - 85°C
25°C
Max.
1.6
1.6
8
2
Min.
62.5
V
25
25
CC
0
=4.5-5.5V
Calibration Accuracy
Max.
0.5
0.5
16
2
±10%
±1%
Units
MHz
ns
ns
ns
μs
μs
%
329
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