ATMEGA649A-AU Atmel, ATMEGA649A-AU Datasheet - Page 312

IC MCU AVR 64K FLASH 64TQFP

ATMEGA649A-AU

Manufacturer Part Number
ATMEGA649A-AU
Description
IC MCU AVR 64K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets

Specifications of ATMEGA649A-AU

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
Processor Series
ATmega
Core
AVR
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
SPI, USART
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
54
Number Of Timers
3
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA649A-AU
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATMEGA649A-AUR
Manufacturer:
Atmel
Quantity:
10 000
27.2
8284A–AVR–10/10
Fuse Bits
Table 27-2.
Notes:
The ATmega169A/169PA/329A/329PA/3290A/3290PA/649A/649P/6490A/6490P has three
Fuse bytes.
they are mapped into the Fuse bytes. Note that the fuses are read as logical zero, “0”, if they are
programmed.
Table 27-3.
Notes:
BODLEVEL2
BODLEVEL1
BODLEVEL0
RSTDISBL
BLB1 Mode
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
Extended Fuse Byte
1
2
3
4
1. Program the Fuse bits and Boot Lock bits before programming the LB1 and LB2.
2. “1” means unprogrammed, “0” means programmed
1. See
2. Port G, PG5 is input only. Pull-up is always on. See
Memory Lock Bits
(2)
Table 27-3 toTable 27-5
(1)
(1)
(1)
Lock Bit Protection Modes
Extended Fuse Byte
Table 28-17 on page 355
BLB12
1
1
0
0
7
6
5
4
2
2
1
0
Bit No
BLB11
1
0
0
1
Description
Brown-out Detector trigger level
Brown-out Detector trigger level
Brown-out Detector trigger level
External Reset Disable
Protection Type
No restrictions for SPM or LPM accessing the Boot Loader
section.
SPM is not allowed to write to the Boot Loader section.
SPM is not allowed to write to the Boot Loader section, and LPM
executing from the Application section is not allowed to read
from the Boot Loader section. If Interrupt Vectors are placed in
the Application section, interrupts are disabled while executing
from the Boot Loader section.
LPM executing from the Application section is not allowed to
read from the Boot Loader section. If Interrupt Vectors are
placed in the Application section, interrupts are disabled while
executing from the Boot Loader section.
describe briefly the functionality of all the fuses and how
for BODLEVEL Fuse decoding.
(1)(2)
(Continued)
”Alternate Functions of Port G” on page 85
Default Value
1
1
1
1
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
312

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