R5F104LCAFB#50 Equivalent & Substitute Parts

Part Overview

The R5F104LCAFB#50 is a 16-bit RL78/G14 microcontroller manufactured by Renesas Electronics Corporation, featuring 32KB FLASH memory, 4KB EEPROM, and 4KB RAM in a 64-LQFP package. This embedded microcontroller 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 device is actively produced and ROHS3 compliant, making it suitable for industrial and embedded applications requiring reliable 16-bit processing capabilities. Substitute parts become necessary when specific package configurations, inventory availability, or design layout requirements necessitate alternative form factors while maintaining identical electrical and functional specifications.

Substiute Parts

R5F104LCAFB#50

Renesas Electronics CorporationIn Stock: 989R5F104LCAFB#50 Datasheet

Current PartRFQ

R5F104LCAFA#50

Renesas Electronics CorporationIn Stock: 1840R5F104LCAFA#50 Datasheet

Parametric EquivalentRFQ

R5F104LCAFP#50

Renesas Electronics CorporationIn Stock: 2130R5F104LCAFP#50 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the R5F104LCAFB#50 are determined by strict electrical and functional equivalence within the RL78/G14 microcontroller family. All substitute parts maintain identical core specifications: 16-bit RL78 processor architecture, 32MHz operating frequency, 32KB FLASH program memory, 4KB EEPROM, 4KB RAM, 48 I/O pins, and identical connectivity and peripheral feature sets. The primary distinction among substitute parts lies in the physical package footprint dimensions, which vary while maintaining the 64-LQFP pin count and Surface Mount mounting type. Substitution is valid when the PCB layout and mechanical constraints of the target application accommodate the alternative package dimensions. All substitute parts share identical electrical characteristics, voltage supply range (1.6V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and compliance certifications (ROHS3, REACH Unaffected).

Parameter Comparison

Engineering Selection Recommendations

All three parts—R5F104LCAFB#50, R5F104LCAFA#50, and R5F104LCAFP#50—are active products manufactured by Renesas Electronics Corporation with identical ROHS3 compliance and REACH Unaffected status. Selection between these parts is determined solely by PCB layout requirements and mechanical constraints related to package footprint dimensions. The R5F104LCAFB#50 features a 10x10mm footprint, the R5F104LCAFA#50 features a 12x12mm footprint, and the R5F104LCAFP#50 features a 14x14mm footprint. All parts maintain identical electrical performance, memory configuration, and functional capabilities. Choose the substitute part whose package dimensions align with available PCB space and design layout specifications. Inventory availability differs among the three variants, with R5F104LCAFP#50 offering the highest stock level at 2032 pieces.

Frequently Asked Questions (FAQ)

Q: Can R5F104LCAFA#50 or R5F104LCAFP#50 be used as direct replacements for R5F104LCAFB#50?

A: Yes, both parts are direct electrical and functional equivalents. The only difference is the physical package footprint dimension. Substitution is valid if the PCB layout accommodates the larger package size. All three parts share identical pin configurations, electrical specifications, and functional capabilities.

Q: What is the primary difference between these substitute parts?

A: The sole difference is the package footprint dimension. R5F104LCAFB#50 uses a 10x10mm footprint, R5F104LCAFA#50 uses a 12x12mm footprint, and R5F104LCAFP#50 uses a 14x14mm footprint. All maintain 64-LQFP pin count and Surface Mount mounting type.

Q: Are there any electrical or performance differences between these parts?

A: No. All three parts feature identical 16-bit RL78 processor architecture, 32MHz clock speed, 32KB FLASH memory, 4KB EEPROM, 4KB RAM, 48 I/O pins, and identical connectivity and peripheral feature sets. Voltage supply range, operating temperature range, and all functional specifications are identical.

Q: Do all substitute parts have the same compliance certifications?

A: Yes. All three parts are ROHS3 compliant and REACH Unaffected. Moisture Sensitivity Level (MSL) is 3 (168 Hours) for all variants.

Q: Which part should I select if I have limited PCB space?

A: Select R5F104LCAFB#50 with the 10x10mm footprint for minimum board space requirements. If additional space is available, R5F104LCAFA#50 (12x12mm) or R5F104LCAFP#50 (14x14mm) are equally valid from an electrical standpoint.

Q: Are there inventory considerations when selecting a substitute?

A: Yes. Current inventory levels differ: R5F104LCAFB#50 has 920 pieces, R5F104LCAFA#50 has 1761 pieces, and R5F104LCAFP#50 has 2032 pieces. If immediate availability is critical, R5F104LCAFP#50 offers the highest stock level.