ATMEGA649P-AUR Atmel, ATMEGA649P-AUR Datasheet - Page 20
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
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7. AVR Memories
7.1
8284A–AVR–10/10
In-System Reprogrammable Flash Program Memory
T h i s
ATmega169A/169PA/329A/329PA/3290A/3290PA/649A/649P/6490A/6490P. The AVR archi-
tecture has two main memory spaces, the Data Memory and the Program Memory space. In
addition, the ATmega169A/169PA/329A/329PA/3290A/3290PA/649A/649P/6490A/6490P fea-
tures an EEPROM Memory for data storage. All three memory spaces are linear.
The ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P contains
16/32/64K bytes On-chip In-System Reprogrammable Flash memory for program storage. Since
all AVR instructions are 16 or 32 bits wide, the Flash is organized as 8K x 16
(ATmega169A/169PA) and 16/32K x 16
(ATmega329A/ATmega329PA/ATmega3290A/ATmega3290PA/ATmega649A/ATmega649P/A
Tmega6490A/ATmega6490P). For software security, the Flash Program memory space is
divided into two sections, Boot Program section and Application Program section.
The Flash memory has an endurance of at least 10,000 write/erase cycles.
The ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P Program
Counter (PC) is 13/14/15 bits wide, thus addressing the 8/16/32K program memory locations.
The operation of Boot Program section and associated Boot Lock bits for software protection are
described in detail in
295.
downloading using the SPI pins or the JTAG interface.
Constant tables can be allocated within the entire program memory address space (see the LPM
– Load Program Memory instruction description).
Timing diagrams for instruction fetch and execution are presented in
ing” on page
Figure 7-1.
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
”Memory Programming” on page 311
s e c t i o n
17.
Program Memory Map
”Boot Loader Support – Read-While-Write Self-Programming” on page
d e s c r i b e s
Application Flash Section
Boot Flash Section
Program Memory
t h e
contains a detailed description on Flash data serial
d i f f e r e n t
0x0000
0x1FFF/0x3FFF/0x7FFF
m e m o r i e s
”Instruction Execution Tim-
i n
t h e
20
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