ATMEGA2561-16AI Atmel, ATMEGA2561-16AI Datasheet - Page 371
ATMEGA2561-16AI
Manufacturer Part Number
ATMEGA2561-16AI
Description
IC AVR MCU 256K 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA2561-16AI
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
256KB (128K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Manufacturer
Quantity
Price
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30.3
30.3.1
Table 30-1.
Notes:
30.3.2
30.4
2549M–AVR–09/10
Factory Calibration
User Calibration
Clock Characteristics
1. Voltage range for ATmega640V/1281V/1280V/2561V/2560V.
2. Voltage range for ATmega640/1281/1280/2561/2560.
External Clock Drive
Calibrated Internal RC Oscillator Accuracy
External Clock Drive Waveforms
Calibration Accuracy of Internal RC Oscillator
Figure 30-5. External Clock Drive Waveforms
Table 30-2.
7.3 MHz - 8.1 MHz
Symbol
1/t
Δ
t
t
t
t
t
CHCX
CLCX
CLCH
CHCL
CLCL
t
CLCL
CLCL
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
External Clock Drive
V
IL1
V
IH1
1.8V - 5.5V
2.7V - 5.5V
ATmega640/1280/1281/2560/2561
V
V
3V
Min.
CC
500
200
200
CC
0
= 1.8V - 5.5V
(1)
(2)
Max.
2.0
2.0
2
2
V
Min.
CC
125
Temperature
50
50
-40°C - 85°C
0
= 2.7V - 5.5V
25°C
Max.
1.6
1.6
8
2
V
Min.
62.5
CC
25
25
0
Calibration Accuracy
= 4.5V - 5.5V
Max.
±10%
0.5
0.5
±1%
16
2
Units
MHz
ns
μs
%
371
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