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AT89C51ED2-RDTUM

MCHPAT89C51ED2-RDTUM

Microchip Technology
80C51 89C Microcontroller IC 8-Bit 60MHz 64KB (64K x 8) FLASH 64-VQFP (10x10)
Active699 in stock
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Overview

The AT89C51ED2-RDTUM is a high-performance 8-bit CMOS microcontroller based on the classic 80C51 architecture, optimized for speeds up to 60MHz. It features 64KB of Flash memory with In-System Programming (ISP) capabilities and includes a dedicated 2KB EEPROM for non-volatile data storage. This device is designed for legacy system upgrades and industrial control applications that require 5V logic compatibility and a robust, well-documented instruction set.

Why Choose This Part

The microcontroller provides a significant performance boost through its X2 mode, allowing the CPU to run at twice the speed of standard 8051 cores at the same external crystal frequency. It simplifies hardware design by integrating an internal baud rate generator and a power monitor to handle brown-out conditions. The 2KB of integrated EEPROM and 64KB of Flash provide ample space for complex firmware and persistent configuration data without requiring external memory chips.

Applications

Industrial Process Control
Utilizing the 50 I/O pins and hardware watchdog timer for managing automated machinery and sensor monitoring.
Legacy System Modernization
Drop-in performance upgrade for older 8051-based designs that require more Flash memory or faster execution via X2 mode.
Embedded Communication Gateways
Using the enhanced full-duplex UART and SPI interface to bridge legacy serial protocols with modern peripheral sensors.
Keyboard and User Interface Controllers
Leveraging the integrated keyboard interrupt interface and PWM outputs for panel control and status indication.

Key Specifications

Speed 60MHz
RAM Size 2K x 8
Core Size 8-Bit
EEPROM Size 2K x 8
Peripherals POR, PWM, WDT
Connectivity SPI, UART/USART
Mounting Type Surface Mount
Number of I/O 50
Core Processor 80C51
Package / Case 64-LQFP
Oscillator Type External
Program Memory Size 64KB (64K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 64-VQFP (10x10)
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V

Getting Started

Development for this part typically involves using the Keil C51 development tools or the open-source SDCC compiler. Programming can be performed via the integrated Boot ROM using FLIP (Flexible In-system Programmer) software over the UART interface. For hardware debugging, engineers often use 8051-compatible JTAG emulators or traditional ROM-emulation techniques.

AT89C51ED2 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number I/O Pins Package Stock
AT89C51ED2-RDTUM (this part) 50 LQFP-64 699
AT89C51ED2-SLSUM 34 LCC-44 203