AT89C51ID2-SLRIM

Microcontrollers Overview

The AT89C51ID2-SLRIM is an 8-bit microcontroller based on the 80C52 architecture, manufactured by Microchip Technology. It features 64 Kbytes of on-chip Flash program/data memory and 2048 bytes of total RAM (256 bytes scratch pad plus 1792 bytes software-selectable XRAM). The device includes a 2048-byte EEPROM block for data storage. It supports industrial temperature ranges (-40°C to +85°C) and operates on a power supply of 2.7V to 5.5V. The component utilizes a VQFP44 package and provides 34 programmable I/O lines.

Microcontrollers Feature Summary

• Supports In-System Programming (ISP) using standard VCC power supply with integrated boot ROM for low-level flash programming routines.
• Integrates a Programmable Counter Array (PCA) capable of high-speed output, compare/capture, pulse width modulation, and watchdog timer functions.
• Includes dedicated hardware interfaces such as SPI (Master/Slave mode), Two-Wire Interface (I2C), and a full-duplex enhanced UART with a dedicated baud rate generator.
• Features dual oscillators allowing independent selection between high-frequency OSCA and low-frequency 32.768 kHz OSCB for optimized power management.

Microcontrollers Applications

• Motor control systems requiring pulse width modulation capabilities
• Alarm systems utilizing hardware watchdog and interrupt features
• Smart card readers leveraging ISP and secure memory access

Microcontrollers Procurement Notes

Verify that the ordering suffix corresponds to the specific package type and temperature grade required for your design. Confirm RoHS compliance status and check for any recent Product Change Notifications (PCNs) regarding marking or packaging updates before finalizing procurement orders.

Microcontrollers Selection Notes

Select this component when an 80C52-compatible core is needed alongside extended memory resources and advanced peripheral sets like PCA and SPI. Ensure the application benefits from the dual oscillator architecture for flexible clock management and requires in-system reprogrammability without external high-voltage programming supplies.

Microcontrollers Part Context

This part belongs to the AT89C51 series of high-performance CMOS flash microcontrollers. It retains full compatibility with the industry-standard 80C51 instruction set and pinout while adding significant enhancements such as expanded RAM, hardware watchdog, and multiple serial communication interfaces for complex embedded applications.

Microcontrollers Replacement Considerations

The AT89C51ID2-RLRUM is a confirmed substitute part number within the same family offering identical functional specifications.