R5F104LEAFB#10 Equivalent & Substitute Parts

Part Overview

The R5F104LEAFB#10 is a 16-bit embedded microcontroller from Renesas Electronics Corporation, part of the RL78/G14 series. This device integrates a 32MHz RL78 core processor with 64KB FLASH program memory, 4KB EEPROM, and 5.5KB RAM in a 64-pin LFQFP surface mount package (10x10mm footprint). The microcontroller provides comprehensive connectivity options including CSI, I2C, LINbus, and UART/USART interfaces, along with integrated peripherals such as DMA, LVD, POR, PWM, and WDT functionality. The device operates across a wide supply voltage range of 1.6V to 5.5V and supports an operating temperature range of -40°C to 85°C. With an active product status and ROHS3 compliance, the R5F104LEAFB#10 serves as a reliable solution for embedded control applications. Equivalent and substitute parts are identified based on matching core electrical specifications, memory configurations, and functional capabilities while accommodating variations in physical package dimensions and thermal grade designations.

Key Parameters

Parameter	Value
Manufacturer	Renesas Electronics Corporation
Series	RL78/G14
Core Processor	RL78
Core Size	16-Bit
Speed	32MHz
Program Memory Size	64KB (64K x 8)
Program Memory Type	FLASH
EEPROM Size	4K x 8
RAM Size	5.5K x 8
Voltage Supply (Vcc/Vdd)	1.6V ~ 5.5V
Data Converters	A/D 12x8/10b
Number of I/O	48
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)
REACH Status	REACH Unaffected
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the R5F104LEAFB#10 are identified based on strict electrical and functional equivalence within the RL78/G14 microcontroller family. All substitute parts maintain identical specifications for the following critical parameters:

Core Electrical Specifications:

16-bit RL78 core processor architecture
32MHz operating frequency
64KB FLASH program memory (64K x 8)
4KB EEPROM (4K x 8)
5.5KB RAM (5.5K x 8)
1.6V to 5.5V supply voltage range
12-bit analog-to-digital converter (12x8/10b)
48 I/O pins
Identical connectivity: CSI, I2C, LINbus, UART/USART
Identical peripherals: DMA, LVD, POR, PWM, WDT
Operating temperature range: -40°C to 85°C

Allowable Variations: Substitute parts differ only in physical package dimensions and thermal grade designations (indicated by the suffix #10 or #30). These variations do not affect electrical functionality or performance characteristics. The package dimension variations include 64-LFQFP (10x10mm), 64-LQFP (12x12mm), and 64-LQFP (14x14mm) footprints. All substitute parts maintain ROHS3 compliance, MSL Level 3 rating, and REACH Unaffected status.

Parameter Comparison

Parameter	R5F104LEAFB#10	R5F104LEAFA#30	R5F104LEAFB#30	R5F104LEAFP#10	R5F104LEAFP#30
Manufacturer	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics
Series	RL78/G14	RL78/G14	RL78/G14	RL78/G14	RL78/G14
Core Processor	RL78	RL78	RL78	RL78	RL78
Core Size	16-Bit	16-Bit	16-Bit	16-Bit	16-Bit
Speed	32MHz	32MHz	32MHz	32MHz	32MHz
Program Memory Size	64KB (64K x 8)	64KB (64K x 8)	64KB (64K x 8)	64KB (64K x 8)	64KB (64K x 8)
Program Memory Type	FLASH	FLASH	FLASH	FLASH	FLASH
EEPROM Size	4K x 8	4K x 8	4K x 8	4K x 8	4K x 8
RAM Size	5.5K x 8	5.5K x 8	5.5K x 8	5.5K x 8	5.5K x 8
Voltage Supply (Vcc/Vdd)	1.6V ~ 5.5V	1.6V ~ 5.5V	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	A/D 12x8/10b	A/D 12x8/10b
Number of I/O	48	48	48	48	48
Connectivity	CSI, I2C, LINbus, UART/USART	CSI, I2C, LINbus, UART/USART	CSI, I2C, LINbus, UART/USART	CSI, I2C, LINbus, UART/USART	CSI, I2C, LINbus, UART/USART
Peripherals	DMA, LVD, POR, PWM, WDT	DMA, LVD, POR, PWM, WDT	DMA, LVD, POR, PWM, WDT	DMA, LVD, POR, PWM, WDT	DMA, LVD, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	64-LQFP	64-LQFP	64-LQFP	64-LQFP	64-LQFP
Supplier Device Package	64-LFQFP (10x10)	64-LQFP (12x12)	64-LFQFP (10x10)	64-LQFP (14x14)	64-LQFP (14x14)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts for the R5F104LEAFB#10 maintain full electrical and functional equivalence within the RL78/G14 microcontroller family. Selection among these alternatives is determined by physical package requirements and PCB layout constraints rather than performance characteristics.

R5F104LEAFB#30 represents the highest inventory availability (102,196 units) and shares the identical 64-LFQFP (10x10mm) package footprint as the primary part, differing only in thermal grade designation (#30 versus #10). This part provides direct form-factor compatibility with existing PCB designs.

R5F104LEAFA#30 offers a 64-LQFP (12x12mm) package footprint, suitable for applications requiring a slightly larger physical envelope while maintaining the same electrical specifications and pin count.

R5F104LEAFP#10 and R5F104LEAFP#30 provide a 64-LQFP (14x14mm) package footprint, accommodating designs with more generous PCB spacing requirements. Both variants maintain identical electrical performance.

All substitute parts carry active product status, ROHS3 compliance, MSL Level 3 rating, and REACH Unaffected designation, ensuring regulatory and environmental compliance equivalent to the primary part. Component selection should be based on PCB layout compatibility, available inventory, and thermal grade requirements specific to the application.

Frequently Asked Questions (FAQ)

Q: What is the primary difference between R5F104LEAFB#10 and its substitutes?

A: The primary differences are physical package dimensions and thermal grade designations. All parts share identical electrical specifications, memory configurations, processor architecture, and functional capabilities. The suffix (#10 or #30) indicates thermal grade, while the package code (LEAFB, LEAFA, LEAFP) specifies the physical footprint dimensions.

Q: Can R5F104LEAFB#30 be used as a direct replacement for R5F104LEAFB#10?

A: Yes. Both parts use the identical 64-LFQFP (10x10mm) package footprint and share all electrical specifications. The thermal grade designation (#30 versus #10) does not affect functional compatibility or performance characteristics.

Q: What are the package dimension differences among the substitute parts?

A: R5F104LEAFB#10 and R5F104LEAFB#30 use 64-LFQFP (10x10mm) footprint. R5F104LEAFA#30 uses 64-LQFP (12x12mm) footprint. R5F104LEAFP#10 and R5F104LEAFP#30 use 64-LQFP (14x14mm) footprint. All maintain 64-pin configuration and identical electrical specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 compliance certification, matching the environmental and regulatory status of the primary R5F104LEAFB#10 part.

Q: What is the moisture sensitivity level for these microcontrollers?

A: All parts maintain MSL Level 3 rating with a 168-hour floor life specification, indicating identical moisture handling and storage requirements.

Q: Can I use a larger package footprint substitute on a PCB designed for the 10x10mm package?

A: No. PCB layout and footprint compatibility must be maintained. Larger package variants (12x12mm or 14x14mm) require corresponding PCB design modifications and cannot be used as direct drop-in replacements on boards designed for the 10x10mm footprint.

Q: Are the memory specifications identical across all substitute parts?

A: Yes. All substitute parts provide 64KB FLASH program memory, 4KB EEPROM, and 5.5KB RAM with identical organization (64K x 8, 4K x 8, and 5.5K x 8 respectively).

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

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

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

A: All parts operate across the temperature range of -40°C to 85°C (TA), providing identical thermal performance specifications.

Q: Are there any differences in supply voltage requirements?

A: No. All substitute parts operate across the identical supply voltage range of 1.6V to 5.5V (Vcc/Vdd).

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