Microchip Technology, Inc. Microcontrollers AT87C54X2-SLRUM

The AT87C54X2-SLRUM is an 8-bit microcontroller from Quarktwin Technology Ltd., compatible with the 80C51 architecture. It operates at speeds of up to 40 MHz at 5V and 30 MHz at 3V, with an X2 speed improvement feature allowing for enhanced performance. The device includes 16KB of on-chip ROM/EPROM, 256 bytes of scratchpad RAM, and supports four 8-bit I/O ports. It features three 16-bit timer/counters, a hardware watchdog timer, and a full duplex enhanced UART for serial communication. The interrupt structure supports six sources with four-level priority, making it suitable for complex applications. Power management options include idle and power-down modes, and it operates within a supply voltage range of 2.7V to 5.5V. The microcontroller is available in various package types, including PLCC44, making it versatile for different design requirements. Temperature ranges for operation include commercial (0 to 70¬8C) and industrial (-40 to 85¬8C), catering to a wide range of applications.