A000003 Arduino, A000003 Datasheet - Page 5

• Manufacturer Part Number: A000003
• Description: MCU, MPU & DSP Development Tools MINI
• Manufacturer: Arduino
• Series: -r
• Type: MCUr

Specifications of A000003

• Processor To Be Evaluated: Atmega328
• Processor Series: ATmega
• Data Bus Width: 8 bit
• Interface Type: USB, RS-232
• Operating Supply Voltage: 7 V to 9 V
• Contents: Board
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: ATmega168

2. Overview
2.1
2545S–AVR–07/10
Block Diagram
The ATmega48/88/168 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced
RISC architecture. By executing powerful instructions in a single clock cycle, the
ATmega48/88/168 achieves throughputs approaching 1 MIPS per MHz allowing the system
designer to optimize power consumption versus processing speed.
Figure 2-1.
The AVR core combines a rich instruction set with 32 general purpose working registers. All the
32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent
registers to be accessed in one single instruction executed in one clock cycle. The resulting
Block Diagram
Generation
PORT D (8)
Watchdog
Watchdog
Oscillator
Oscillator
8bit T/C 0
8bit T/C 2
USART 0
Circuits /
EEPROM
Timer
Clock
PD[0..7]
POR / BOD &
Supervision
PORT B (8)
16bit T/C 1
Analog
Power
RESET
Comp.
Flash
PB[0..7]
SPI
CPU
debugWIRE
PORT C (7)
A/D Conv.
Bandgap
PROGRAM
Internal
SRAM
PC[0..6]
LOGIC
TWI
ATmega48/88/168
6
ADC[6..7]
2
AVCC
XTAL[1..2]
AREF
GND
RESET
5