R5F100LFDFB#50 Equivalent & Substitute Parts

Part Overview

The R5F100LFDFB#50 is a 16-bit RL78/G13 microcontroller manufactured by Renesas Electronics Corporation, designed for embedded applications requiring 96KB flash memory and integrated connectivity interfaces. This device is currently in active production status with 978 units available in new original stock. Substitute parts are identified when design requirements permit flexibility in packaging or form factor while maintaining identical core functionality and electrical specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	R5F100LFDFB#50
Series	RL78/G13
Core Processor	RL78
Core Size	16-Bit
Speed	32MHz
Program Memory Size	96KB (96K x 8)
Program Memory Type	FLASH
EEPROM Size	8K x 8
RAM Size	8K 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
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	64-LQFP
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the R5F100LFDFB#50 is determined by strict equivalence across the following critical parameters:

Series and core processor (RL78/G13, RL78 core)
Core size (16-Bit)
Operating frequency (32MHz)
Memory configuration (96KB flash, 8KB EEPROM, 8KB RAM)
I/O count (48 pins)
Voltage supply range (1.6V ~ 5.5V)
Connectivity interfaces (CSI, I2C, LINbus, UART/USART)
Peripheral set (DMA, LVD, POR, PWM, WDT)
Data converter specifications (A/D 12x8/10b)
Operating temperature range (-40°C ~ 85°C)
Compliance certifications (ROHS3, REACH Unaffected)

The R5F100LFAFA#50 qualifies as a parametric equivalent substitute. Both devices share identical electrical specifications, memory architecture, and functional capabilities. The difference lies in packaging configuration: the main part uses 64-LFQFP (10x10) while the substitute uses 64-LQFP (12x12), and the substitute is supplied in Tape & Reel format versus the main part's standard packaging.

Parameter Comparison

Parameter	R5F100LFDFB#50	R5F100LFAFA#50	Match
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	96KB (96K x 8)	96KB (96K x 8)	✓
Program Memory Type	FLASH	FLASH	✓
EEPROM Size	8K x 8	8K x 8	✓
RAM Size	8K x 8	8K 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	✓
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	✓
Mounting Type	Surface Mount	Surface Mount	✓
Package / Case	64-LQFP	64-LQFP	✓
Supplier Device Package	64-LFQFP (10x10)	64-LQFP (12x12)	Different
Packaging Format	Standard	Tape & Reel (TR)	Different
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
Product Status	Active	Active	✓

Engineering Selection Recommendations

Both the R5F100LFDFB#50 and R5F100LFAFA#50 are active production devices from Renesas Electronics Corporation with identical ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on:

PCB layout constraints and available board space, as the 64-LFQFP (10x10) footprint differs from the 64-LQFP (12x12) footprint
Supply chain requirements, as the R5F100LFAFA#50 is available in higher volume (2006 units) in Tape & Reel format, suitable for automated assembly processes
Design documentation and schematic compatibility with the selected package variant

Both devices maintain identical electrical performance, memory specifications, and functional capabilities across all operating conditions within the specified temperature range.

Frequently Asked Questions (FAQ)

Q: Can R5F100LFAFA#50 be used as a direct replacement for R5F100LFDFB#50?

A: Yes, from an electrical and functional standpoint. Both devices are parametrically equivalent with identical core specifications, memory configuration, and peripheral sets. The primary consideration is PCB footprint compatibility, as the package dimensions differ (10x10 versus 12x12).

Q: What is the difference between the two package variants?

A: The R5F100LFDFB#50 uses a 64-LFQFP (10x10) package in standard format, while the R5F100LFAFA#50 uses a 64-LQFP (12x12) package supplied in Tape & Reel format. Both are 64-pin LQFP packages with different physical dimensions and supply configurations.

Q: Are there any electrical differences between these parts?

A: No. Both parts share identical voltage supply ranges (1.6V ~ 5.5V), operating temperature specifications (-40°C ~ 85°C), memory sizes, processing speed (32MHz), and all peripheral and connectivity features.

Q: Which part should be selected for high-volume production?

A: The R5F100LFAFA#50 in Tape & Reel format is optimized for automated assembly processes and is available in higher inventory volume (2006 units), making it suitable for high-volume manufacturing scenarios.

Q: Are both parts RoHS compliant?

A: Yes. Both the R5F100LFDFB#50 and R5F100LFAFA#50 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the Moisture Sensitivity Level for these devices?

A: Both devices have an MSL rating of 3 with a 168-hour floor life, indicating standard moisture handling requirements for surface mount assembly processes.

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