Atmega328p

 300
  • High-performance 8-bit AVR microcontroller

  • Fully compatible with Arduino Uno bootloader (when programmed)

  • 32KB Flash memory for program storage

  • Multiple digital I/O pins and analog inputs

  • Built-in timers, PWM channels, and serial interfaces

  • Low power consumption suitable for battery-powered designs

ATMEGA8L-8pu

 130
  • 8-bit AVR RISC architecture

  • Low-power “L” version suitable for energy-efficient applications

  • 8KB Flash program memory

  • Built-in 10-bit ADC for analog signal processing

  • Multiple digital I/O pins for flexible interfacing

  • Supports SPI, I2C (TWI), and USART communication

Atmel AT89C51

 120
  • 8-bit microcontroller based on 8051 architecture

  • 4KB Flash programmable and erasable memory

  • 32 programmable I/O lines

  • Two 16-bit timers/counters

  • Full-duplex UART serial communication

  • On-chip oscillator and clock circuitry

Atmel AT89C52

 110
  • 8-bit microcontroller based on industry-standard 8051 architecture

  • 8KB in-system programmable Flash memory

  • 32 programmable input/output lines

  • Three 16-bit timers/counters

  • Full-duplex UART serial communication

MAX485 IC

 60
  • Supports RS-485 and RS-422 standard communication

  • Low power consumption, suitable for battery-powered projects

  • High noise immunity for stable data transmission

  • Half-duplex communication with differential driver and receiver

  • Compact 8-pin package for easy PCB integration