AT89C51RD2-RLTUM The Microchip AT89C51RD2-RLTUM is an 8-bit microcontroller featuring 64KB of Flash memory and operating at up to 40MHz. It offers 34 I/Os and standard communication interfaces.
Mfr Part #:

AT89C51RD2-RLTUM

Available from 2 distributors
Mfr Name: Microchip Technology
Microchip Technology
The Microchip AT89C51RD2-RLTUM is an 8-bit microcontroller featuring 64KB of Flash memory and operating at up to 40MHz. It offers 34 I/Os and standard communication interfaces.
✓ Total Stock: 3,470 pcs

AT89C51RD2-RLTUM Available from 2 distributors

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AT89C51RD2-RLTUM Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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AT89C51RD2-RLTUM Description

Short technical summary and product information.

The Microchip AT89C51RD2-RLTUM is a high-performance CMOS Flash version of the 80C51 microcontroller. It integrates 64KB of on-chip Flash program memory and 2KB of expanded RAM (XRAM).

 

This microcontroller operates at frequencies up to 40MHz in standard mode and 20MHz in X2 mode, with higher speeds achievable for internal code execution only. It features 34 I/O pins, three 16-bit timer/counters, and supports SPI and UART/USART connectivity. The device includes peripherals such as Power-on Reset (POR), Pulse Width Modulator (PWM), and a Watchdog Timer (WDT).

 

Designed for industrial applications, the AT89C51RD2-RLTUM operates over an industrial temperature range of -40°C to 85°C and supports a supply voltage range of 2.7V to 5.5V. It is available in a 44-VQFP package suitable for surface mount applications.

 

Key features include ISP (In-System Programming) capability, dual data pointers, and an enhanced UART with a dedicated baud rate generator. The AT89C51ED2 variant also offers 2048 bytes of EEPROM for data storage.

AT89C51RD2-RLTUM Quick Information

Product Type: Microcontroller
Series: AT89C51RD2/ED2
Canonical Name: AT89C51RD2-RLTUM 8-Bit Flash Microcontroller
Subcategory: 8-Bit Microcontroller

AT89C51RD2-RLTUM Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Lead Free

AT89C51RD2-RLTUM Features

  • 64KB on-chip Flash program memory.
  • Operates at up to 40MHz frequency.
  • Features 34 programmable I/O pins.
  • Includes SPI and UART communication interfaces.
  • Available in a 44-VQFP surface mount package.

AT89C51RD2-RLTUM Applications

  • Suitable for embedded control systems.
  • Ideal for industrial automation tasks.
  • Used in data acquisition systems.
  • Applicable in consumer electronics.

AT89C51RD2-RLTUM FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the AT89C51RD2-RLTUM?

The operating voltage range is 2.7V to 5.5V.

What is the operating temperature range of the AT89C51RD2-RLTUM?

The operating temperature range is -40°C to +85°C.

What package is the AT89C51RD2-RLTUM available in?

The AT89C51RD2-RLTUM is available in a 44-VQFP (10x10) package.

What is the maximum frequency of the AT89C51RD2-RLTUM?

The maximum frequency is 40 MHz for internal and external code execution, and 60 MHz for internal code execution only.

How much Flash memory does the AT89C51RD2-RLTUM have?

It has 64KB (64K x 8) of Flash program memory.

How many I/O pins does the AT89C51RD2-RLTUM have?

It has 34 I/O pins.

What communication interfaces does the AT89C51RD2-RLTUM support?

It supports SPI and UART interfaces.

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