ATMEGA64A-MN Atmel, ATMEGA64A-MN Datasheet - Page 385

• Manufacturer Part Number: ATMEGA64A-MN
• Description: IC MCU AVR 64K FLASH 8QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64A-MN

• 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

Table of Contents
1
2
3
4
5
6
7
8
8160C–AVR–07/09
Features ..................................................................................................... 1
Pin Configuration ..................................................................................... 2
Overview ................................................................................................... 3
Resources ................................................................................................. 7
Data Retention .......................................................................................... 7
About Code Examples ............................................................................. 8
AVR CPU Core .......................................................................................... 9
AVR Memories ........................................................................................ 17
System Clock and Clock Options ......................................................... 37
2.1
2.2
2.3
6.1
6.2
6.3
6.4
6.5
6.6
6.7
7.1
7.2
7.3
7.4
7.5
7.6
8.1
8.2
8.3
8.4
8.5
8.6
8.7
Block Diagram ...................................................................................................3
ATmega103 and ATmega64A Compatibility .....................................................4
Pin Descriptions .................................................................................................5
Overview ............................................................................................................9
ALU – Arithmetic Logic Unit .............................................................................10
Status Register ................................................................................................10
Stack Pointer ...................................................................................................13
Instruction Execution Timing ...........................................................................13
Reset and Interrupt Handling ...........................................................................14
Interrupt Response Time .................................................................................16
In-System Reprogrammable Flash Program Memory .....................................17
SRAM Data Memory ........................................................................................18
EEPROM Data Memory ..................................................................................21
I/O Memory ......................................................................................................22
External Memory Interface ..............................................................................23
Register Description ........................................................................................30
Clock Systems and their Distribution ...............................................................37
Clock Sources .................................................................................................38
Default Clock Source .......................................................................................38
Crystal Oscillator .............................................................................................39
Low-frequency Crystal Oscillator .....................................................................40
External RC Oscillator .....................................................................................41
Calibrated Internal RC Oscillator .....................................................................42
ATmega64A
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