ATMEGA64A-ANR Atmel, ATMEGA64A-ANR Datasheet - Page 18
![IC MCU AVR 64K FLASH 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA64A-ANR
Manufacturer Part Number
ATMEGA64A-ANR
Description
IC MCU AVR 64K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets
1.ATMEGA64A-MUR.pdf
(21 pages)
2.ATMEGA64A-AU.pdf
(392 pages)
3.ATMEGA64A-AU.pdf
(3 pages)
Specifications of ATMEGA64A-ANR
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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7.2
8160C–AVR–07/09
SRAM Data Memory
Figure 7-1.
The ATmega64A supports two different configurations for the SRAM data memory as listed in
Table
Table 7-1.
Figure 7-2
The ATmega64A is a complex microcontroller with more peripheral units than can be supported
within the 64 locations reserved in the Opcode for the IN and OUT instructions. For the
Extended I/O space from 0x60 - 0xFF in SRAM, only the ST/STS/STD and LD/LDS/LDD instruc-
tions can be used. The Extended I/O space does not exist when the ATmega64A is in the
ATmega103 compatibility mode.
The first 4,352 data memory locations address both the Register File, the I/O memory, Extended
I/O memory, and the internal data SRAM. The first 32 locations address the Register File, the
next 64 location the standard I/O memory, then 160 locations of Extended I/O memory, and the
next 4,096 locations address the internal data SRAM.
Configuration
Normal mode
ATmega103 compatibility mode
7-1.
on
page 20
Program Memory Map
Memory Configurations
shows how the ATmega64A SRAM Memory is organized.
Application Flash Section
Boot Flash Section
Internal SRAM
Data Memory
4096
4000
$0000
$7FFF
External SRAM
Data Memory
up to 64K
up to 64K
ATmega64A
18
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