ATMEGA649P-AUR Atmel, ATMEGA649P-AUR Datasheet - Page 353
ATMEGA649P-AUR
Manufacturer Part Number
ATMEGA649P-AUR
Description
IC MCU AVR 64KB FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA649P-AUR
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
54
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
64-TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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28.4
28.4.1
Table 28-12. Calibration Accuracy of Internal RC Oscillator
Notes:
28.4.2
28.4.3
8284A–AVR–10/10
Factory Calibration
User Calibration
Clock Characteristics
1. Voltage range for ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P.
Calibrated Internal RC Oscillator Accuracy
External Clock Drive Waveforms
External Clock Drive
Figure 28-3. External Clock Drive Waveforms
Table 28-13. External Clock Drive
Symbol
1/t
t
t
t
t
t
Δ
CLCL
CHCX
CLCX
CLCH
CHCL
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
t
CLCL
CLCL
7.3 - 8.1 MHz
Frequency
8.0 MHz
Parameter
Oscillator
Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period
from one clock
cycle to the next
V
IL1
V
IH1
1.8V - 5.5V
V
3V
1000
Min.
400
400
V
CC
0
CC
=1.8-5.5V
(1)
Max.
2.0
2.0
4
2
Min.
100
V
Temperature
40
40
-40°C - 85°C
0
CC
=2.7-5.5V
25°C
Max.
1.6
1.6
10
2
Min.
V
50
20
20
0
CC
Calibration Accuracy
=4.5-5.5V
Max.
±10%
0.5
0.5
±1%
20
2
Units
MHz
ns
μs
%
353
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