ATMEGA8A-MUR Atmel, ATMEGA8A-MUR Datasheet - Page 3
ATMEGA8A-MUR
Manufacturer Part Number
ATMEGA8A-MUR
Description
MCU AVR 8KB FLASH 16MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA8A-MU.pdf
(308 pages)
Specifications of ATMEGA8A-MUR
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
23
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K 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
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2. Overview
2.1
8159D–AVR–02/11
Block Diagram
The Atmel
RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega8A
achieves throughputs approaching 1 MIPS per MHz, allowing the system designer to optimize
power consumption versus processing speed.
Figure 2-1.
RESET
GND
VCC
®
AGND
AREF
AVR
Block Diagram
®
ATmega8A is a low-power CMOS 8-bit microcontroller based on the AVR
INSTRUCTION
INSTRUCTION
AVR CPU
PROGRAMMING
CONTROL
PROGRAM
PROGRAM
REGISTER
DECODER
COUNTER
FLASH
LINES
PORTC DIGITAL INTERFACE
MUX &
PORTC DRIVERS/BUFFERS
LOGIC
ADC
+
-
PC0 - PC6
REGISTERS
INTERFACE
INTERFACE
PURPOSE
REGISTER
GENERAL
POINTER
STATUS
STACK
COMP.
SRAM
ADC
ALU
SPI
X
Y
Z
OSCILLATOR
WATCHDOG
COUNTERS
INTERRUPT
MCU CTRL.
INTERNAL
& TIMING
EEPROM
TIMERS/
USART
TIMER
PORTB DIGITAL INTERFACE
PORTD DIGITAL INTERFACE
PORTD DRIVERS/BUFFERS
PORTB DRIVERS/BUFFERS
UNIT
TWI
PB0 - PB7
PD0 - PD7
OSCILLATOR
OSCILLATOR
ATmega8A
XTAL1
XTAL2
3
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