R5F104LEGFP#30 Equivalent & Substitute Parts

Part Overview

The R5F104LEGFP#30 is a 16-bit microcontroller from Renesas Electronics Corporation's RL78/G14 series, featuring 64KB FLASH memory, 5.5KB RAM, and 4KB EEPROM. This embedded microcontroller operates at 32MHz with integrated connectivity options including CSI, I2C, LINbus, and UART/USART interfaces. The device is housed in a 64-LQFP (14x14mm) surface mount package and is rated for operation across -40°C to 105°C. The product maintains Active status with ROHS3 compliance and REACH unaffected classification. Equivalent substitute parts are identified based on matching core electrical specifications and functional capabilities while accommodating package form factor variations within the RL78/G14 series.

Substiute Parts

R5F104LEGFP#30

Renesas Electronics CorporationIn Stock: 1042R5F104LEGFP#30 Datasheet

Current PartRFQ

R5F104LEGFA#30

Renesas Electronics CorporationIn Stock: 1202R5F104LEGFA#30 Datasheet

Parametric EquivalentRFQ

R5F104LEGFB#30

Renesas Electronics CorporationIn Stock: 4218R5F104LEGFB#30 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the R5F104LEGFP#30 are identified from the RL78/G14 microcontroller series based on electrical and functional parameter equivalence. All substitute parts maintain identical core specifications including 16-bit processor architecture, 32MHz operating speed, 64KB FLASH memory capacity, 5.5KB RAM, 4KB EEPROM, 48 I/O pins, and complete peripheral feature sets (DMA, LVD, POR, PWM, WDT). Connectivity interfaces remain consistent across all variants: CSI, I2C, LINbus, and UART/USART. Supply voltage range, data converter specifications, oscillator type, operating temperature range, and compliance certifications (ROHS3, REACH unaffected) are identical across all listed parts.

Substitution is permitted based on package form factor variations within the 64-pin LQFP family. The primary differentiator among substitute parts is the physical package dimension, which affects printed circuit board layout and thermal characteristics but does not alter electrical functionality or pin configuration. All parts share the same base product number R5F104 and maintain Active product status with equivalent MSL ratings.

Parameter Comparison

Engineering Selection Recommendations

All three parts—R5F104LEGFP#30, R5F104LEGFA#30, and R5F104LEGFB#30—are functionally equivalent microcontrollers within the RL78/G14 series and maintain Active product status. Selection between these parts is determined by printed circuit board layout requirements and available board space, as the primary distinction is package footprint dimension.

The R5F104LEGFP#30 in 64-LQFP (14x14mm) configuration provides the largest package footprint and is suitable for applications with standard PCB layout constraints. The R5F104LEGFA#30 in 64-LQFP (12x12mm) offers a reduced footprint for space-constrained designs while maintaining the same pin pitch and electrical characteristics. The R5F104LEGFB#30 in 64-LFQFP (10x10mm) provides the most compact form factor for applications requiring minimal board area.

All parts comply with ROHS3 standards and maintain REACH unaffected status, ensuring regulatory compliance across industrial and commercial applications. Moisture sensitivity level remains constant at MSL 3 (168 hours) across all variants. Selection should be based on PCB design requirements and available component placement area rather than electrical performance, as all parts deliver identical functional capabilities.

Frequently Asked Questions (FAQ)

Q: Are R5F104LEGFP#30, R5F104LEGFA#30, and R5F104LEGFB#30 electrically interchangeable?

A: Yes. All three parts are electrically equivalent with identical core processor architecture, clock speed, memory configuration, I/O count, and peripheral feature sets. The only difference is the physical package dimension, which affects PCB layout but not electrical function.

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

A: The primary difference is package form factor. R5F104LEGFP#30 uses 64-LQFP (14x14mm), R5F104LEGFA#30 uses 64-LQFP (12x12mm), and R5F104LEGFB#30 uses 64-LFQFP (10x10mm). All maintain 64-pin configuration with identical pin assignments.

Q: Can I substitute R5F104LEGFB#30 for R5F104LEGFP#30 on an existing PCB?

A: Direct PCB substitution is not possible without redesign. The different package dimensions require different footprint layouts. However, the electrical functionality is identical, so firmware and application code require no modification.

Q: Do all three parts have the same memory specifications?

A: Yes. All parts feature 64KB FLASH program memory, 5.5KB RAM, and 4KB EEPROM. Memory organization and access characteristics are identical across all variants.

Q: Are the connectivity interfaces identical across all three parts?

A: Yes. All parts include CSI, I2C, LINbus, and UART/USART connectivity interfaces with identical functional specifications.

Q: What is the operating temperature range for all substitute parts?

A: All parts operate across -40°C to 105°C (TA), providing identical thermal performance specifications.

Q: Do all parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, with identical moisture sensitivity level (MSL 3, 168 hours).

Q: Which part should I select for a space-constrained application?

A: R5F104LEGFB#30 in 64-LFQFP (10x10mm) provides the smallest footprint. Selection should be based on available PCB area and layout requirements, as all parts deliver identical electrical performance.

Q: Is firmware compatibility maintained across all three parts?

A: Yes. Firmware developed for any one of these parts operates identically on the others without modification, as the processor core, instruction set, and peripheral architecture are identical.

Q: What supply voltage range do all parts support?

A: All parts support 2.4V to 5.5V supply voltage range, enabling operation across diverse power supply configurations.