ATMEGA64-16MJ Atmel, ATMEGA64-16MJ Datasheet - Page 18

• Manufacturer Part Number: ATMEGA64-16MJ
• Description: IC MCU AVR 64K 5V 16MHZ 64-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64-16MJ

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• 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): 4.5 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: Lead free / RoHS Compliant

AVR Memories
In-System
Reprogrammable
Flash Program
Memory
2490Q–AVR–06/10
This section describes the different memories in the ATmega64. The AVR architecture has two
main memory spaces, the Data Memory and the Program Memory space. In addition, the
ATmega64 features an EEPROM Memory for data storage. All three memory spaces are linear
and regular.
The ATmega64 contains 64 Kbytes On-chip In-System Reprogrammable Flash memory for pro-
gram storage. Since all AVR instructions are 16 bits or 32 bits wide, the Flash is organized as
32K x 16. 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 ATmega64 Pro-
gram Counter (PC) is 15 bits wide, thus addressing the 32K program memory locations. The
operation of Boot Program section and associated Boot Lock bits for software protection are
described in detail in
“Memory Programming” on page 290
SPI, JTAG, or Parallel Programming mode.
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 8. Program Memory Map
14.
“Boot Loader Support – Read-While-Write Self-programming” on page
Application Flash Section
Boot Flash Section
contains a detailed description on Flash programming in
$0000
$7FFF
“Instruction Execution Tim-
ATmega64(L)
277.
18