R5F101LEDFA#X0 Equivalent & Substitute Parts

Part Overview

The R5F101LEDFA#X0 is a 16-bit microcontroller from Renesas Electronics Corporation's RL78/G13 series, featuring 64KB FLASH memory, 4KB RAM, and 48 I/O pins in a 64-LQFP package. This part is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications. Substitute parts must maintain identical electrical specifications and package compatibility to ensure direct replacement without design modifications.

Substiute Parts

R5F101LEDFA#X0

Renesas Electronics CorporationIn Stock: 768R5F101LEDFA#X0 Datasheet

Current PartRFQ

R5F101LEDFA#50

Renesas Electronics CorporationIn Stock: 825R5F101LEDFA#50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the R5F101LEDFA#X0 is determined by strict equivalence across the following critical parameters:

• Manufacturer & Series: Must be Renesas Electronics Corporation RL78/G13 series
• Core Architecture: 16-bit RL78 processor at 32MHz
• Memory Configuration: 64KB FLASH and 4KB RAM
• I/O Count: 48 pins minimum
• Package: 64-LQFP (12x12) surface mount
• Voltage Range: 1.6V ~ 5.5V supply compatibility
• Environmental Compliance: ROHS3 compliance and MSL 3 rating

The R5F101LEDFA#50 qualifies as a direct substitute based on identical electrical and mechanical specifications. The primary distinction is product status: the original part is obsolete, while the substitute is active in production.

Parameter Comparison

Engineering Selection Recommendations

The R5F101LEDFA#50 is the appropriate substitute for the obsolete R5F101LEDFA#X0. Both parts maintain identical electrical specifications, memory configuration, I/O architecture, and package dimensions. The substitute part is currently in active production status, ensuring availability for new designs and replacement inventory.

Both parts comply with ROHS3 standards and carry MSL 3 moisture sensitivity ratings, meeting environmental and reliability requirements for industrial and commercial applications. The substitute part includes additional compliance documentation (REACH Unaffected, ECCN 3A991A2, HTSUS 8542.31.0001), supporting regulatory and export requirements.

No design modifications, firmware changes, or PCB layout adjustments are required when transitioning from the main part to the substitute. Pin configuration, electrical characteristics, and functional performance remain identical.

Frequently Asked Questions (FAQ)

Q: Can R5F101LEDFA#50 be used as a direct replacement for R5F101LEDFA#X0?

A: Yes. Both parts are identical in electrical specifications, memory configuration, I/O count, package type, and operating parameters. The only difference is product status: the original is obsolete while the substitute is active.

Q: Are there any pin configuration differences between these parts?

A: No. Both parts use the 64-LQFP (12x12) package with 48 I/O pins in identical pin assignments. PCB layouts and schematics require no modification.

Q: What is the significance of the part number suffix (#X0 vs #50)?

A: The suffix indicates manufacturing date code or packaging variant. The electrical and functional specifications remain identical regardless of suffix designation.

Q: Do both parts support the same voltage range?

A: Yes. Both parts operate across 1.6V to 5.5V supply voltage range, maintaining compatibility with existing power supply designs.

Q: Are there any temperature operating range differences?

A: No. Both parts operate across -40°C to 85°C ambient temperature range, suitable for industrial and extended commercial applications.

Q: What is the MSL rating and why does it matter?

A: Both parts carry MSL 3 rating with 168-hour moisture sensitivity limits. This specification governs storage conditions and reflow soldering procedures. No differences exist between the parts.

Q: Is firmware compatibility maintained between these parts?

A: Yes. Identical RL78 core architecture, clock speed, memory organization, and peripheral configuration ensure complete firmware compatibility without recompilation or modification.