R5F101LEDFB#X0 Equivalent & Substitute Parts

Part Overview

The R5F101LEDFB#X0 is a 16-bit RL78/G13 microcontroller manufactured by Renesas Electronics Corporation, featuring 64KB FLASH memory, 4KB RAM, and 48 I/O pins in a 64-LQFP package. This device integrates multiple communication interfaces (CSI, I2C, LINbus, UART/USART) and peripheral functions (DMA, LVD, POR, PWM, WDT) suitable for embedded control applications.

The R5F101LEDFB#X0 carries an Obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for systems utilizing this microcontroller.

Key Parameters

Parameter	Value
Series	RL78/G13
Core Processor	RL78
Core Size	16-Bit
Speed	32MHz
Program Memory Size	64KB (64K x 8)
Program Memory Type	FLASH
RAM Size	4K x 8
Number of I/O	48
Voltage Supply (Vcc/Vdd)	1.6V ~ 5.5V
Data Converters	A/D 12x8/10b
Connectivity	CSI, I2C, LINbus, UART/USART
Peripherals	DMA, LVD, POR, PWM, WDT
Package / Case	64-LQFP
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C (TA)

Substitute Part Grouping Explanation

Substitution eligibility for the R5F101LEDFB#X0 is determined by strict equivalence across the following critical parameters:

Series and Core Processor: Must be RL78/G13 with RL78 core
Memory Configuration: 64KB FLASH and 4KB RAM (exact match required)
I/O Count: 48 pins minimum
Package Type: 64-LQFP form factor
Electrical Specifications: Voltage supply range 1.6V ~ 5.5V, operating temperature -40°C ~ 85°C
Connectivity and Peripherals: CSI, I2C, LINbus, UART/USART; DMA, LVD, POR, PWM, WDT

The R5F101LEDFB#50 qualifies as a direct substitute based on identical electrical, functional, and mechanical specifications. The primary distinction is product status: R5F101LEDFB#50 maintains Active status, ensuring ongoing availability and support.

Parameter Comparison

Parameter	R5F101LEDFB#X0 (Main)	R5F101LEDFB#50 (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Series	RL78/G13	RL78/G13
Core Processor	RL78	RL78
Core Size	16-Bit	16-Bit
Speed	32MHz	32MHz
Program Memory Size	64KB (64K x 8)	64KB (64K x 8)
Program Memory Type	FLASH	FLASH
RAM Size	4K x 8	4K x 8
Number of I/O	48	48
Voltage Supply (Vcc/Vdd)	1.6V ~ 5.5V	1.6V ~ 5.5V
Data Converters	A/D 12x8/10b	A/D 12x8/10b
Connectivity	CSI, I2C, LINbus, UART/USART	CSI, I2C, LINbus, UART/USART
Peripherals	DMA, LVD, POR, PWM, WDT	DMA, LVD, POR, PWM, WDT
Package / Case	64-LQFP	64-LQFP
Mounting Type	Surface Mount	Surface Mount
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Product Status	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)
ECCN	3A991A2	3A991A2
HTSUS	8542.31.0001	8542.31.0001

Engineering Selection Recommendations

The R5F101LEDFB#50 is the appropriate substitute for the obsolete R5F101LEDFB#X0. Both devices are manufactured by Renesas Electronics Corporation and maintain identical electrical, functional, and mechanical specifications. The R5F101LEDFB#50 provides the following advantages:

Product Status: Active status ensures continued availability, technical support, and supply chain stability
Compliance: Both parts maintain ROHS3 compliance and identical regulatory classifications (ECCN, HTSUS)
Handling Requirements: Identical Moisture Sensitivity Level (MSL 3, 168 Hours) ensures compatible storage and assembly procedures
Pin Compatibility: Identical 64-LQFP package and I/O configuration enable direct PCB-level substitution without design modification

No design changes, firmware modifications, or board layout adjustments are required when transitioning from R5F101LEDFB#X0 to R5F101LEDFB#50.

Frequently Asked Questions (FAQ)

Q: Can R5F101LEDFB#50 be used as a direct replacement for R5F101LEDFB#X0?

A: Yes. Both parts are electrically and mechanically identical. The R5F101LEDFB#50 can be substituted without design modifications, firmware changes, or PCB layout adjustments.

Q: What is the difference between R5F101LEDFB#X0 and R5F101LEDFB#50?

A: The primary difference is product status. R5F101LEDFB#X0 is classified as Obsolete, while R5F101LEDFB#50 maintains Active status. All technical specifications, memory configurations, I/O counts, and package types are identical.

Q: Are there any compatibility concerns with the 64-LQFP package?

A: No. Both parts use the identical 64-LQFP (10x10) package with 48 I/O pins. Pin assignments, electrical characteristics, and mounting requirements are identical.

Q: Do both parts have the same moisture sensitivity requirements?

A: Yes. Both R5F101LEDFB#X0 and R5F101LEDFB#50 carry MSL 3 (168 Hours) classification, requiring identical storage, handling, and assembly procedures.

Q: Are regulatory and compliance certifications identical?

A: Yes. Both parts maintain ROHS3 compliance and carry identical ECCN (3A991A2) and HTSUS (8542.31.0001) classifications.

Q: Can firmware developed for R5F101LEDFB#X0 run on R5F101LEDFB#50?

A: Yes. Both devices feature identical RL78 core processors, memory configurations, and peripheral sets. Firmware compatibility is assured without modification.

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