R5F101GFDNA#U0 Equivalent & Substitute Parts

Part Overview

The R5F101GFDNA#U0 is a 16-bit RL78/G13 microcontroller manufactured by Renesas Electronics Corporation, featuring 96KB FLASH memory, 8KB RAM, and 34 I/O pins in a 48-HWQFN (7x7) surface mount package. This device operates at 32MHz with an internal oscillator and supports multiple communication protocols including CSI, I2C, LINbus, and UART/USART.

The R5F101GFDNA#U0 has reached obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this microcontroller.

Substiute Parts

R5F101GFDNA#U0

Renesas Electronics CorporationIn Stock: 792R5F101GFDNA#U0 Datasheet

Current PartRFQ

R5F100GFGNA#20

Renesas Electronics CorporationIn Stock: 1790R5F100GFGNA#20 Datasheet

DirectRFQ

R5F100GFGNA#00

Renesas Electronics CorporationIn Stock: 1034R5F100GFGNA#00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the R5F101GFDNA#U0 are identified based on strict electrical and mechanical parameter compatibility within the RL78/G13 microcontroller family. The substitution logic is based on the following criteria:

Core Compatibility Parameters:

• Identical series designation (RL78/G13)
• Identical core processor architecture (RL78)
• Identical core size (16-Bit)
• Identical operating frequency (32MHz)
• Identical program memory capacity (96KB FLASH)
• Identical RAM capacity (8K x 8)
• Identical I/O count (34 pins)
• Identical peripheral feature set (DMA, LVD, POR, PWM, WDT)
• Identical connectivity protocols (CSI, I2C, LINbus, UART/USART)
• Identical data converter configuration (A/D 10x8/10b)
• Identical package form factor (48-HWQFN 7x7)
• Identical mounting technology (Surface Mount)

Acceptable Parameter Variations:

• Voltage supply range expansion (original: 1.6V ~ 5.5V; substitutes: 2.4V ~ 5.5V)
• Operating temperature range extension (original: -40°C ~ 85°C; substitutes: -40°C ~ 105°C)
• Product status transition from obsolete to active
• Packaging format variation (Tray or Tape & Reel)
• Compliance certifications (RoHS3, REACH Unaffected)

The substitute parts R5F100GFGNA#20 and R5F100GFGNA#00 maintain full functional and electrical equivalence to the R5F101GFDNA#U0 while offering improved availability and extended operational specifications.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

Both R5F100GFGNA#20 and R5F100GFGNA#00 are direct functional equivalents to the R5F101GFDNA#U0. These substitute parts maintain identical core architecture, memory configuration, I/O count, and peripheral feature sets, enabling direct replacement in existing designs without firmware or hardware modifications.

Product Status Advantage:

The substitute parts hold active product status with Renesas Electronics Corporation, ensuring continued availability, technical support, and manufacturing continuity. This contrasts with the obsolete status of the R5F101GFDNA#U0, which presents supply chain risk and limits access to manufacturer resources.

Compliance and Certification:

Both substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original part does not specify RoHS compliance status. This compliance alignment supports long-term design sustainability and regulatory adherence.

Operating Specifications:

The substitute parts extend the operating temperature range to -40°C ~ 105°C, compared to the original -40°C ~ 85°C specification. The minimum supply voltage increases from 1.6V to 2.4V. These parameter changes represent operational enhancements suitable for extended temperature applications while maintaining compatibility with standard 5V and 3.3V supply designs.

Packaging Options:

R5F100GFGNA#20 is supplied in Tray packaging, suitable for manual assembly and small-volume production. R5F100GFGNA#00 is supplied in Tape & Reel format, optimized for automated pick-and-place assembly and high-volume manufacturing. Selection between these variants depends on production methodology and volume requirements.

Frequently Asked Questions (FAQ)

Q: Are R5F100GFGNA#20 and R5F100GFGNA#00 pin-for-pin compatible with R5F101GFDNA#U0?

A: Yes. Both substitute parts use the identical 48-HWQFN (7x7) package with 34 I/O pins in the same physical configuration. No PCB layout modifications are required for substitution.

Q: Will existing firmware compiled for R5F101GFDNA#U0 execute on the substitute parts?

A: Yes. The substitute parts implement the identical RL78 core processor architecture with matching instruction set, memory organization, and peripheral register definitions. Firmware compiled for the original part executes without modification on the substitute parts.

Q: What is the difference between R5F100GFGNA#20 and R5F100GFGNA#00?

A: Both parts are electrically and functionally identical. The difference is packaging format: R5F100GFGNA#20 is supplied in Tray packaging for manual assembly, while R5F100GFGNA#00 is supplied in Tape & Reel format for automated assembly. Selection depends on production volume and assembly methodology.

Q: Can designs operating at 1.6V minimum supply voltage use the substitute parts?

A: No. The substitute parts specify a minimum supply voltage of 2.4V, compared to 1.6V for the original part. Designs requiring operation below 2.4V cannot use these substitutes. Designs operating at 2.4V or higher are compatible.

Q: Are the substitute parts suitable for high-temperature applications?

A: Yes. The substitute parts extend the maximum operating temperature to 105°C, compared to 85°C for the original part. This enables use in elevated temperature environments within the specified -40°C ~ 105°C range.

Q: What is the moisture sensitivity level for the substitute parts?

A: Both substitute parts maintain MSL 3 (168 Hours) rating, identical to the original part. Standard moisture control procedures during storage and handling apply.

Q: Do the substitute parts include EEPROM memory?

A: Yes. The substitute parts include 8K x 8 EEPROM, whereas the original part specification does not list EEPROM capacity. This represents an additional feature in the substitute parts.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both substitute parts are ROHS3 compliant. The original part does not specify RoHS compliance status. This compliance alignment supports regulatory requirements for new designs and manufacturing processes.