R5F100LEGFB#50 Equivalent & Substitute Parts

Part Overview

The R5F100LEGFB#50 is a 16-bit microcontroller from Renesas Electronics Corporation's RL78/G13 series, designed for embedded applications requiring 64KB flash memory and integrated connectivity interfaces. This device operates at 32MHz with a supply voltage range of 2.4V to 5.5V and is housed in a 64-LFQFP (10x10) surface mount package. The part maintains Active product status and carries ROHS3 compliance with REACH unaffected designation. Substitute parts are identified when electrical specifications, memory configurations, and core functionality remain identical while packaging or mechanical parameters may differ.

Substiute Parts

R5F100LEGFB#50

Renesas Electronics CorporationIn Stock: 818R5F100LEGFB#50 Datasheet

Current PartRFQ

R5F100LEGFA#50

Renesas Electronics CorporationIn Stock: 1750R5F100LEGFA#50 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the R5F100LEGFB#50 is determined by strict equivalence across electrical and functional parameters. The following criteria establish valid substitutes:

Mandatory Matching Parameters:

• Core Processor: RL78
• Core Size: 16-Bit
• Speed: 32MHz
• Program Memory: 64KB FLASH
• EEPROM: 4K x 8
• RAM: 4K x 8
• Voltage Supply: 2.4V ~ 5.5V
• I/O Count: 48
• Connectivity: CSI, I2C, LINbus, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Data Converters: A/D 12x8/10b
• Operating Temperature: -40°C ~ 105°C
• Product Status: Active
• RoHS Compliance: ROHS3

Allowable Variations:

• Package form factor (LFQFP vs LQFP)
• Physical package dimensions (10x10 vs 12x12)
• Supplier device package designation

Parameter Comparison

Engineering Selection Recommendations

The R5F100LEGFA#50 qualifies as a direct electrical and functional equivalent to the R5F100LEGFB#50. Both devices maintain identical core specifications, memory configurations, connectivity interfaces, and peripheral sets. The distinction between these parts lies exclusively in physical package dimensions: the R5F100LEGFB#50 uses a 64-LFQFP (10x10) footprint, while the R5F100LEGFA#50 uses a 64-LQFP (12x12) footprint.

Selection between these equivalents depends on printed circuit board layout constraints and available board space. Both parts carry Active product status, ROHS3 compliance, and identical regulatory designations (REACH unaffected, ECCN 3A991A2, HTSUS 8542.31.0001). Moisture sensitivity levels are equivalent at MSL 3 (168 Hours), ensuring identical handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can R5F100LEGFA#50 replace R5F100LEGFB#50 in existing designs?

A: Electrical and functional replacement is valid. PCB layout modification is required due to different package footprints: 10x10mm versus 12x12mm. Pin configuration and signal assignments remain identical.

Q: What is the primary difference between these two part numbers?

A: The sole difference is the physical package form factor. The R5F100LEGFB#50 is packaged in 64-LFQFP (10x10), while the R5F100LEGFA#50 is packaged in 64-LQFP (12x12). All electrical specifications and functional capabilities are identical.

Q: Are there any compliance or regulatory differences?

A: No. Both parts carry identical RoHS3 compliance, REACH unaffected status, ECCN classification, and HTSUS codes. Moisture sensitivity levels and handling requirements are equivalent.

Q: Which part should be selected for space-constrained applications?

A: The R5F100LEGFB#50 with its 10x10mm footprint is suitable for applications requiring minimal board space. The R5F100LEGFA#50 with its 12x12mm footprint may be preferred when board layout allows for larger component spacing.

Q: Are pin assignments identical between these parts?

A: Yes. Both parts maintain 48 I/O pins with identical signal assignments, connectivity interfaces (CSI, I2C, LINbus, UART/USART), and peripheral configurations.