R5F104MFGFB#V0 Equivalent & Substitute Parts

Part Overview

The R5F104MFGFB#V0 is a 16-bit RL78/G14 microcontroller manufactured by Renesas Electronics Corporation, featuring 96KB FLASH memory, 12KB RAM, and 8KB EEPROM in an 80-LQFP package. This part is classified as obsolete, making identification of suitable substitutes essential for ongoing design support and production continuity. The RL78/G14 series provides integrated connectivity options including CSI, I2C, LINbus, and UART/USART interfaces, along with peripheral functions such as DMA, PWM, and watchdog timer capabilities.

Key Parameters

Parameter	Value
Manufacturer	Renesas Electronics Corporation
Series	RL78/G14
Core Processor	RL78
Core Size	16-Bit
Speed	32MHz
Program Memory Size	96KB (96K x 8) FLASH
RAM Size	12K x 8
EEPROM Size	8K x 8
Package Type	80-LQFP (12x12)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the R5F104MFGFB#V0 is determined by the following critical parameters:

Manufacturer & Series: Both parts must be Renesas Electronics Corporation RL78/G14 microcontrollers to ensure instruction set compatibility and peripheral architecture alignment
Core Architecture: 16-bit RL78 core processor is mandatory for software compatibility
Memory Configuration: Program memory (96KB FLASH), RAM (12KB), and EEPROM (8KB) must match exactly
Clock Speed: 32MHz operation is required
Package: 80-LQFP (12x12) form factor ensures PCB layout compatibility
Mounting Type: Surface mount technology must be maintained
Compliance: RoHS3 compliance and MSL rating must be equivalent or superior

The R5F104MFGFB#30 qualifies as a direct substitute based on these parameters. Both parts share identical core specifications, memory architecture, and package configuration. The primary distinction is packaging format (tape/reel versus bulk) and product status (active versus obsolete).

Parameter Comparison

Parameter	R5F104MFGFB#V0	R5F104MFGFB#30	Match Status
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation	Identical
Series	RL78/G14	RL78/G14	Identical
Core Processor	RL78	RL78	Identical
Core Size	16-Bit	16-Bit	Identical
Speed	32MHz	32MHz	Identical
Program Memory	96KB FLASH	96KB FLASH	Identical
RAM Size	12K x 8	12K x 8	Identical
EEPROM Size	8K x 8	8K x 8	Identical
Connectivity	CSI, I2C, LINbus, UART/USART	CSI, I2C, LINbus, UART/USART	Identical
Peripherals	DMA, LVD, POR, PWM, WDT	DMA, LVD, POR, PWM, WDT	Identical
Number of I/O	64	74	Substitute has additional I/O
Voltage Supply Range	1.6V ~ 5.5V	2.4V ~ 5.5V	Substitute has narrower range
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	Identical
Package	80-LQFP (12x12)	80-LQFP (12x12)	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL Rating	3 (168 Hours)	3 (168 Hours)	Identical
Product Status	Obsolete	Active	Substitute is active
Packaging Format	Bulk	Tray	Different packaging

Engineering Selection Recommendations

The R5F104MFGFB#30 is a valid substitute for the obsolete R5F104MFGFB#V0 based on the following engineering criteria:

Functional Compatibility: Both parts implement identical RL78/G14 core architecture, memory configuration, and peripheral set. Software compiled for the R5F104MFGFB#V0 executes without modification on the R5F104MFGFB#30.

Physical Compatibility: Identical 80-LQFP (12x12) package and surface mount configuration ensure direct PCB layout compatibility without redesign.

Compliance Status: Both parts maintain ROHS3 compliance and equivalent MSL ratings, satisfying environmental and reliability requirements.

Operational Considerations: The R5F104MFGFB#30 features a narrower supply voltage range (2.4V ~ 5.5V versus 1.6V ~ 5.5V). Designs operating below 2.4V require verification of actual circuit requirements before substitution. The R5F104MFGFB#30 provides 74 I/O pins compared to 64 on the original part, offering additional functionality without creating incompatibility.

Availability: The R5F104MFGFB#30 maintains active product status with current manufacturing support, addressing the obsolescence of the original part.

Frequently Asked Questions (FAQ)

Q: Can the R5F104MFGFB#30 replace the R5F104MFGFB#V0 in existing designs?

A: Yes. Both parts share identical core processor architecture, memory configuration, clock speed, and package format. Existing firmware requires no modification. Verify that your circuit operates within the R5F104MFGFB#30 supply voltage range of 2.4V ~ 5.5V.

Q: What is the difference in I/O pin count between these parts?

A: The R5F104MFGFB#V0 provides 64 I/O pins, while the R5F104MFGFB#30 provides 74 I/O pins. This difference does not affect compatibility; the additional pins expand available functionality without impacting existing pin assignments.

Q: Are there supply voltage considerations for substitution?

A: The original part supports 1.6V ~ 5.5V operation, while the substitute supports 2.4V ~ 5.5V. If your design operates below 2.4V, confirm that the R5F104MFGFB#30 meets your minimum voltage requirements before implementation.

Q: What packaging formats are available for these parts?

A: The R5F104MFGFB#V0 is supplied in bulk packaging, while the R5F104MFGFB#30 is supplied in tray packaging. Both use identical 80-LQFP (12x12) component packages suitable for automated assembly.

Q: Are both parts RoHS compliant?

A: Yes. Both the R5F104MFGFB#V0 and R5F104MFGFB#30 are ROHS3 compliant with MSL rating 3 (168 hours), meeting environmental and reliability standards.

Q: What is the product status difference?

A: The R5F104MFGFB#V0 is classified as obsolete, while the R5F104MFGFB#30 maintains active product status with ongoing manufacturing support from Renesas Electronics Corporation.

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