AT89C51ID2-SLRIM Equivalent & Substitute Parts

Part Overview

The AT89C51ID2-SLRIM is an 80C51-based 8-bit microcontroller manufactured by Microchip Technology, featuring 64KB FLASH program memory, 2KB EEPROM, and 2KB RAM. This device operates at 60MHz with a supply voltage range of 2.7V to 5.5V and integrates standard peripherals including I2C, SPI, UART/USART connectivity, along with POR, PWM, and WDT functions in a 44-PLCC surface mount package.

The AT89C51ID2-SLRIM is classified as obsolete. Locating direct replacements requires identifying substitute parts that maintain electrical and mechanical compatibility while offering improved availability and compliance status.

Substiute Parts

AT89C51ID2-SLRIM

Microchip TechnologyIn Stock: 848AT89C51ID2-SLRIM Datasheet

Current PartRFQ

AT89C51ID2-SLRUM

Microchip TechnologyIn Stock: 2722AT89C51ID2-SLRUM Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT89C51ID2-SLRIM is determined by strict equivalence across the following critical parameters:

• Core processor architecture (80C51)
• Memory configuration (64KB FLASH, 2KB EEPROM, 2KB RAM)
• Operating frequency (60MHz)
• Supply voltage range (2.7V ~ 5.5V)
• I/O count (34 pins)
• Peripheral set (I2C, SPI, UART/USART, POR, PWM, WDT)
• Operating temperature range (-40°C ~ 85°C)
• Physical package (44-PLCC, 16.6x16.6mm)

The AT89C51ID2-SLRUM meets all electrical and mechanical equivalence criteria and is classified as an active, direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The AT89C51ID2-SLRUM is the direct electrical and mechanical equivalent of the AT89C51ID2-SLRIM. Both devices share identical core processor architecture, memory configuration, operating frequency, supply voltage specifications, I/O count, peripheral set, and physical package dimensions.

The AT89C51ID2-SLRUM offers the following advantages:

• Active product status with confirmed availability
• ROHS3 compliance versus RoHS non-compliant status of the main part
• Verified programmability certification
• Available in Cut Tape and Digi-Reel packaging options

Selection of the AT89C51ID2-SLRUM is appropriate for new designs and production applications requiring current-generation components with regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the AT89C51ID2-SLRUM be used as a direct replacement for the AT89C51ID2-SLRIM?

A: Yes. Both parts are electrically and mechanically identical. They share the same 80C51 core processor, 64KB FLASH memory, 2KB EEPROM, 2KB RAM, 60MHz operating frequency, 2.7V to 5.5V supply voltage range, 34 I/O pins, and 44-PLCC package dimensions. Pin-for-pin and functional compatibility is confirmed.

Q: What is the difference between the AT89C51ID2-SLRIM and AT89C51ID2-SLRUM?

A: The primary differences are product status and compliance. The AT89C51ID2-SLRIM is obsolete and RoHS non-compliant. The AT89C51ID2-SLRUM is an active product with ROHS3 compliance and verified programmability. No electrical or mechanical differences exist.

Q: Are there packaging differences between these parts?

A: Both parts use the 44-PLCC (16.6x16.6mm) package. The AT89C51ID2-SLRUM is available in Cut Tape (CT) and Digi-Reel packaging options, providing flexibility for different procurement and assembly workflows.

Q: Is the AT89C51ID2-SLRUM suitable for new product designs?

A: Yes. The AT89C51ID2-SLRUM is an active product with current manufacturing status and ROHS3 compliance, making it appropriate for new designs and production applications.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by matching core processor (80C51), memory configuration (64KB FLASH, 2KB EEPROM, 2KB RAM), operating frequency (60MHz), supply voltage range (2.7V to 5.5V), I/O count (34), peripheral set (I2C, SPI, UART/USART, POR, PWM, WDT), operating temperature range (-40°C to 85°C), and physical package (44-PLCC, 16.6x16.6mm).