Microchip Technology, Inc. Microcontrollers AT89C51RB2-RLRUM

The AT89C51RB2-RLRUM is an 8-bit microcontroller compatible with the 80C52 architecture, featuring a high-performance Flash memory of 16K bytes. It operates at speeds up to 60 MHz under specific voltage conditions, with a dual data pointer and a robust interrupt system that includes nine sources and four priority levels. The microcontroller includes three 16-bit timer/counters, 256 bytes of internal RAM, and an additional 1024 bytes of expandable RAM (XRAM) that can be software-selected. It supports in-system programming (ISP) and offers a variety of interfaces, including SPI and a full duplex enhanced UART, making it suitable for multiprocessor communication. The device also features power control modes to reduce consumption, including idle and power-down modes. The AT89C51RB2-RLRUM is available in multiple package options, including PDIL40, PLCC44, and VQFP44, and operates within a temperature range of 0 to +70¬8C for commercial applications and -40¬8C to +85¬8C for industrial applications. This microcontroller is ideal for applications requiring pulse width modulation, high-speed I/O, and counting capabilities, such as motor control and alarm systems.