AT80C51RA2-RLTUM

Microcontrollers Overview

The AT80C51RA2-RLTUM is an 8-bit microcontroller based on the 80C52 architecture, manufactured by Microchip Technology. It features a high-speed CMOS core with up to 40 MHz operation at 5V and 30 MHz at 3V. The device includes 256 bytes of internal scratchpad RAM and 256 bytes of expanded RAM (XRAM). It supports four 8-bit I/O ports and offers three 16-bit timer/counters alongside a Programmable Counter Array. The unit operates within a voltage range of 2.7V to 5.5V and functions across commercial and industrial temperature ranges.

Microcontrollers Feature Summary

• High-Speed Architecture supporting X2 mode for doubled CPU performance
• Dual Data Pointer capability for optimized memory access
• Programmable Counter Array with PWM and Watchdog Timer functions
• Enhanced UART with framing error detection and automatic address recognition

Microcontrollers Applications

• Industrial control systems requiring robust interrupt handling
• Embedded applications utilizing multiprocessor communication via EUART
• Battery-powered devices benefiting from low power consumption modes
• Systems requiring precise timing through programmable clock outputs

Microcontrollers Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type and temperature grade. Confirm RoHS compliance status for the exact part number variant before procurement. Ensure the selected component matches the intended voltage supply requirements of the target application circuit design.

Microcontrollers Selection Notes

Select this model when dual data pointers are necessary for efficient block memory operations. Choose this variant if hardware watchdog functionality is required without external components. Consider this MCU for designs needing enhanced serial communication capabilities or flexible timer configurations with up/down counting modes.

Microcontrollers Part Context

This component belongs to the TS8xC51Rx2 family of high-performance 8-bit microcontrollers. It maintains full pin and instruction compatibility with standard 8051 architectures while introducing advanced peripheral sets. The device represents a modernized iteration designed to replace legacy ROM-based controllers in complex embedded environments.

Microcontrollers Replacement Considerations

Direct replacements include other members of the TS8xC51Rx2 series such as the TS80C51RD2 for increased RAM capacity. Cross-reference pinouts carefully when substituting with different package variants like PLCC or VQFP versions within the same family.