Renesas Electronics RL78/G13 R5F100LCDFB#50 Equivalent & Substitute Parts

Part Overview

The R5F100LCDFB#50 is a 16-bit RL78/G13 microcontroller manufactured by Renesas Electronics Corporation, featuring 32KB FLASH program memory, 4KB EEPROM, and 2KB RAM. This device operates at 32MHz with integrated connectivity options including CSI, I2C, LINbus, and UART/USART interfaces, along with peripheral functions such as DMA, LVD, POR, PWM, and WDT. The part is actively produced and ROHS3 compliant, making it suitable for embedded control applications requiring reliable 16-bit processing capabilities. Equivalent substitute parts are identified based on matching core electrical specifications and mechanical compatibility within the RL78/G13 product line.

Key Parameters

Parameter	Value
Manufacturer Part Number	R5F100LCDFB#50
Series	RL78/G13
Core Processor	RL78
Core Size	16-Bit
Speed	32MHz
Program Memory Size	32KB (32K x 8)
Program Memory Type	FLASH
EEPROM Size	4K x 8
RAM Size	2K x 8
Number of I/O	48
Voltage Supply (Vcc/Vdd)	1.6V ~ 5.5V
Data Converters	A/D 12x8/10b
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	64-LQFP
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Equivalent substitute parts for the R5F100LCDFB#50 are identified based on strict parameter matching within the RL78/G13 microcontroller family. The substitution criteria are defined by the following key parameters:

Core Processor: RL78 (identical architecture)
Core Size: 16-Bit (identical processing capability)
Speed: 32MHz (identical clock frequency)
Program Memory Size: 32KB FLASH (identical code storage)
EEPROM Size: 4K x 8 (identical non-volatile data storage)
RAM Size: 2K x 8 (identical volatile memory)
Number of I/O: 48 (identical I/O pin count)
Voltage Supply Range: 1.6V ~ 5.5V (identical operating voltage)
Data Converters: A/D 12x8/10b (identical analog capability)
Operating Temperature: -40°C ~ 85°C (identical thermal range)
Connectivity: CSI, I2C, LINbus, UART/USART (identical interface support)
Peripherals: DMA, LVD, POR, PWM, WDT (identical peripheral functions)
Mounting Type: Surface Mount (identical assembly method)
RoHS Status: ROHS3 Compliant (identical environmental compliance)

Variations in packaging format (Tape & Reel vs. standard packaging) and physical package dimensions (10x10mm vs. 12x12mm LQFP footprint) do not affect electrical equivalence but may impact PCB layout and supply chain logistics.

Parameter Comparison

Parameter	R5F100LCDFB#50	R5F100LCAFA#50	R5F100LCAFB#50
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation
Series	RL78/G13	RL78/G13	RL78/G13
Core Processor	RL78	RL78	RL78
Core Size	16-Bit	16-Bit	16-Bit
Speed	32MHz	32MHz	32MHz
Program Memory Size	32KB (32K x 8)	32KB (32K x 8)	32KB (32K x 8)
Program Memory Type	FLASH	FLASH	FLASH
EEPROM Size	4K x 8	4K x 8	4K x 8
RAM Size	2K x 8	2K x 8	2K x 8
Number of I/O	48	48	48
Voltage Supply (Vcc/Vdd)	1.6V ~ 5.5V	1.6V ~ 5.5V	1.6V ~ 5.5V
Data Converters	A/D 12x8/10b	A/D 12x8/10b	A/D 12x8/10b
Oscillator Type	Internal	Internal	Internal
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	64-LQFP	64-LQFP	64-LQFP
Supplier Device Package	64-LFQFP (10x10)	64-LQFP (12x12)	64-LFQFP (10x10)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts—R5F100LCDFB#50, R5F100LCAFA#50, and R5F100LCAFB#50—are electrically equivalent microcontrollers within the RL78/G13 family. Selection between these parts is determined by packaging and supply chain requirements rather than functional capability.

R5F100LCDFB#50 and R5F100LCAFB#50 share identical physical package dimensions (64-LFQFP 10x10mm), making them directly interchangeable at the PCB layout level. R5F100LCAFA#50 uses a larger 64-LQFP (12x12mm) footprint and requires PCB redesign if substitution is necessary.

All parts maintain active product status with ROHS3 compliance and REACH unaffected designation, confirming suitability for current production and regulatory requirements. Moisture sensitivity level (MSL 3, 168 hours) is identical across all variants, requiring equivalent handling and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can R5F100LCAFA#50 be used as a direct replacement for R5F100LCDFB#50 on an existing PCB?

A: No. While electrically equivalent, R5F100LCAFA#50 uses a 64-LQFP (12x12mm) package compared to the 64-LFQFP (10x10mm) package of R5F100LCDFB#50. PCB footprint redesign is required.

Q: Are R5F100LCDFB#50 and R5F100LCAFB#50 pin-compatible?

A: Yes. Both parts use the 64-LFQFP (10x10mm) package with identical pin assignments, electrical specifications, and memory configurations. They are directly interchangeable without PCB modification.

Q: What is the difference between the packaging designations in the part numbers?

A: The suffix designations (LCDFB vs. LCAFA vs. LCAFB) indicate different packaging formats and supply chain configurations. LCDFB and LCAFB use 10x10mm LQFP packages; LCAFA uses a 12x12mm LQFP package. Tape & Reel (TR) packaging is available for LCAFA and LCAFB variants.

Q: Do all three parts support the same connectivity interfaces?

A: Yes. All variants support identical connectivity: CSI, I2C, LINbus, and UART/USART, along with identical peripheral functions including DMA, LVD, POR, PWM, and WDT.

Q: Are there any differences in memory specifications between these parts?

A: No. All three parts feature identical memory: 32KB FLASH program memory, 4KB EEPROM, and 2KB RAM.

Q: What is the operating voltage range for these microcontrollers?

A: All three parts operate within the voltage range of 1.6V to 5.5V (Vcc/Vdd), supporting both low-power and standard voltage applications.

Q: Are these parts suitable for industrial temperature applications?

A: Yes. All variants operate across the temperature range of -40°C to 85°C (TA), meeting industrial and extended temperature requirements.

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