ATMEGA2561V-8MI Atmel, ATMEGA2561V-8MI Datasheet - Page 45
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ATMEGA2561V-8MI
Manufacturer Part Number
ATMEGA2561V-8MI
Description
IC AVR MCU 256K 8MHZ 64-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA2561V-8MI
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
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)
1.8 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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA2561V-8MI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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9.6
2549M–AVR–09/10
Low Frequency Crystal Oscillator
Table 9-6.
Notes:
The device can utilize a 32.768 kHz watch crystal as clock source by a dedicated Low Fre-
quency Crystal Oscillator. The crystal should be connected as shown in
When this Oscillator is selected, start-up times are determined by the SUT Fuses and CKSEL0
as shown in
The Low-Frequency Crystal Oscillator provides an internal load capacitance, see
each XTAL/TOSC pin.
Table 9-7.
Device
Ceramic resonator, slowly
Ceramic resonator, slowly
ATmega640/1280/1281/2560
Ceramic resonator, BOD
Crystal Oscillator, slowly
Ceramic resonator, fast
Ceramic resonator, fast
Crystal Oscillator, BOD
Crystal Oscillator, fast
Oscillator Source /
Power Conditions
rising power
rising power
rising power
rising power
rising power
rising power
1. These options should only be used when not operating close to the maximum frequency of the
2. These options are intended for use with ceramic resonators and will ensure frequency stability
enabled
enabled
device, and only if frequency stability at start-up is not important for the application. These
options are not suitable for crystals.
at start-up. They can also be used with crystals when not operating close to the maximum fre-
quency of the device, and if frequency stability at start-up is not important for the application.
/2561
Table 9-8 on page
Start-up Times for the Full Swing Crystal Oscillator Clock Selection
Capacitance for Low Frequency Oscillator
32 kHz oscillator
Start-up Time from
Power-down and
46.
ATmega640/1280/1281/2560/2561
Power-save
System Osc.
Timer Osc.
16K CK
16K CK
16K CK
258 CK
258 CK
1K CK
1K CK
1K CK
Cap (Xtal1/Tosc1)
Additional Delay
14CK + 4.1 ms
14CK + 4.1 ms
14CK + 65 ms
14CK + 65 ms
14CK + 4.1 ms
14CK + 65 ms
(V
from Reset
CC
14CK
14CK
18 pF
6 pF
= 5.0V)
(2)
(1)
(2)
(1)
(2)
Figure 9-2 on page
Cap (Xtal2/Tosc2)
CKSEL0
0
0
0
0
1
1
1
1
8 pF
6 pF
Table 9-7
SUT1:0
00
01
10
11
00
01
10
11
43.
45
at
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