AT89C5115-SISUM

Microcontrollers Overview

The AT89C5115-SISUM is an 8-bit microcontroller based on the 80C51 core architecture, manufactured by Microchip Technology. It features 16 KB of on-chip Flash memory for program storage and includes a dedicated 2 KB Bootloader Flash section. The device provides 256 bytes of internal RAM and 256 bytes of on-chip XRAM. Integrated peripherals include a 10-bit Analog-to-Digital Converter with eight multiplexed inputs, a Programmable Counter Array (PCA), three 16-bit timers/counters, and a full-duplex UART. The unit supports a maximum crystal frequency of 40 MHz, operates within a voltage range of 3 V to 5.5 V, and functions across an industrial temperature range of -40 °C to +85 °C.

Microcontrollers Feature Summary

• Integrates a 10-bit ADC with eight multiplexed analog input channels for signal acquisition.
• Includes a two-channel 16-bit Programmable Counter Array supporting PWM, high-speed output, and edge capture.
• Features a fully static design allowing clock frequencies down to DC without data loss.
• Provides power-saving capabilities through selectable Idle and Power-down modes.

Microcontrollers Applications

• Industrial control systems requiring A/D conversion and pulse width modulation.
• Consumer goods utilizing embedded logic and sensor interfacing.
• Alarm systems needing reliable monitoring and low-power operation.
• Motor control applications involving counting capabilities and high-speed I/O.

Microcontrollers Procurement Notes

Verify the specific package variant against the ordering suffix, as the datasheet lists SOIC28, SOIC24, PLCC28, and VQFP32 options. Confirm that the selected component matches the required pin configuration for the target PCB layout. Ensure environmental specifications align with the intended operating temperature range. Cross-reference the manufacturer's latest documentation to confirm current production status and any potential obsolescence notices before finalizing procurement plans.

Microcontrollers Selection Notes

Select this component when an 8051-compatible architecture is required alongside integrated analog conversion capabilities. The inclusion of a dedicated bootloader flash section facilitates firmware updates via serial programming interfaces. Consider the available I/O ports and timer resources to ensure sufficient peripheral coverage for the application. Evaluate the power consumption requirements against the available idle and power-down modes to optimize energy efficiency in battery-operated or low-power designs.

Microcontrollers Part Context

This device belongs to the AT89C51 series of low-pin-count 8-bit microcontrollers produced by Microchip Technology. It represents a Flash-based evolution of the standard 80C52 architecture, enhancing it with additional onboard memory and analog peripherals. The series is designed to offer a superset of standard 8052 features while maintaining binary compatibility with existing software codebases developed for the classic 8051 instruction set.

Microcontrollers Replacement Considerations

Compatible replacements within the same family include variants such as the AT89C51ED2, which offers expanded memory and I/O resources. Verify pin compatibility and register mapping when substituting with other members of the AT89C51 series to ensure seamless integration without hardware modifications.