The AT89C51RD2T-RLTUM from Microchip is an 8-bit Microcontroller (MCU), based on the popular 8051 core. It features 8 KB of Flash memory, 1 KB of RAM, 16 ports, three 16-bit timer/counters, and a 4-level interrupt controller. It is capable of up to 12 MIPS performance and a maximum clock frequency of 49 MHz. It also supports on-chip I2C serial communication and external interrupt(s). The AT89C51RD2T-RLTUM is housed in a 44-pin LQFP package and operates at a temperature range of -40 to +85°C. This Microcontroller is ideal for applications such as consumer electronics, security systems, home automation, and industrial automation.