Equivalent & Substitute Parts for R5F64179DFB#UB

Part Overview

The R5F64179DFB#UB is a 16/32-bit microcontroller from Renesas Electronics Corporation, part of the M16C/R32C/100/117 series. This device features a 50MHz R32C/100 core with 1MB FLASH memory, 63K x 8 RAM, and 8K x 8 EEPROM, packaged in a 100-LFQFP form factor. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Core Processor	R32C/100
Core Size	16/32-Bit
Speed	50MHz
Program Memory Size	1MB (1M x 8) FLASH
RAM Size	63K x 8
EEPROM Size	8K x 8
Voltage Supply (Vcc/Vdd)	3V ~ 5.5V
Package / Case	100-LQFP (14x14)
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C (TA)
Number of I/O	84
Connectivity	CANbus, EBI/EMI, I2C, IEBus, UART/USART
Peripherals	DMA, LVD, PWM, WDT
Data Converters	A/D 26x10b; D/A 2x8b
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the R5F64179DFB#UB is determined by strict equivalence across the following critical parameters:

Core processor architecture (R32C/100)
Core size (16/32-Bit)
Operating frequency (50MHz)
Program memory capacity and type (1MB FLASH)
RAM and EEPROM capacity (63K x 8 and 8K x 8 respectively)
Supply voltage range (3V ~ 5.5V)
Package form factor (100-LQFP, 14x14mm)
I/O count (84 pins)
Peripheral set (CANbus, EBI/EMI, I2C, IEBus, UART/USART, DMA, LVD, PWM, WDT)
Data converter specifications (A/D 26x10b; D/A 2x8b)
Operating temperature range (-40°C ~ 85°C)
Compliance certifications (ROHS3, MSL 3)

Substitute parts must maintain identical electrical and mechanical specifications across all parameters listed above. Variations in product status or packaging codes do not affect functional substitutability when all technical parameters remain constant.

Parameter Comparison

Parameter	R5F64179DFB#UB (Main)	R5F64189DFB#UB	R5F64179PFB#2C	R5F64189DFB#U0
Manufacturer	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics
Core Processor	R32C/100	R32C/100	R32C/100	R32C/100
Core Size	16/32-Bit	16/32-Bit	16/32-Bit	16/32-Bit
Speed	50MHz	50MHz	50MHz	50MHz
Program Memory	1MB FLASH	1MB FLASH	1MB FLASH	1MB FLASH
RAM Size	63K x 8	63K x 8	63K x 8	63K x 8
EEPROM Size	8K x 8	8K x 8	8K x 8	8K x 8
Voltage Supply	3V ~ 5.5V	3V ~ 5.5V	3V ~ 5.5V	3V ~ 5.5V
Package / Case	100-LQFP (14x14)	100-LQFP (14x14)	100-LQFP (14x14)	100-LQFP (14x14)
Number of I/O	84	84	84	84
Connectivity	CANbus, EBI/EMI, I2C, IEBus, UART/USART	CANbus, EBI/EMI, I2C, IEBus, UART/USART	CANbus, EBI/EMI, I2C, IEBus, UART/USART	CANbus, EBI/EMI, I2C, IEBus, UART/USART
Peripherals	DMA, LVD, PWM, WDT	DMA, LVD, PWM, WDT	DMA, LVD, PWM, WDT	DMA, LVD, PWM, WDT
Data Converters	A/D 26x10b; D/A 2x8b	A/D 26x10b; D/A 2x8b	A/D 26x10b; D/A 2x8b	A/D 26x10b; D/A 2x8b
Operating Temperature	-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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active	Active	Active
Series	M16C/R32C/100/117	M16C/R32C/100/118	M16C/R32C/100/117	M16C/R32C/100/118

Engineering Selection Recommendations

All three substitute parts—R5F64189DFB#UB, R5F64179PFB#2C, and R5F64189DFB#U0—maintain complete electrical and mechanical equivalence to the R5F64179DFB#UB across all specified parameters. The primary distinction lies in product status and series designation.

R5F64179PFB#2C and R5F64189DFB#U0 are classified as active products, providing assured long-term availability and manufacturing support. R5F64189DFB#UB is also active and represents the M16C/R32C/100/118 series variant, which differs only in internal revision level while maintaining identical external specifications.

All substitute candidates comply with ROHS3 requirements and carry MSL 3 ratings. Selection among these equivalents should be based on procurement availability, lead time requirements, and design documentation compatibility with the specific series variant.

Frequently Asked Questions (FAQ)

Q: Can R5F64189DFB#UB replace R5F64179DFB#UB in production designs?

A: Yes. Both devices share identical electrical specifications, core architecture, memory configuration, I/O count, peripheral set, and package form factor. The difference in series designation (100/118 versus 100/117) reflects internal revision levels that do not affect functional compatibility. R5F64189DFB#UB is an active product, providing better long-term availability.

Q: What is the difference between R5F64179PFB#2C and R5F64179DFB#UB?

A: These parts are parametrically equivalent. Both belong to the M16C/R32C/100/117 series and maintain identical core specifications. The suffix variation (#2C versus #UB) indicates different packaging codes or distribution channels. R5F64179PFB#2C is an active product.

Q: Are all substitute parts pin-compatible with the original R5F64179DFB#UB?

A: Yes. All substitute parts use the 100-LQFP (14x14mm) package with 84 I/O pins. Pin assignments, voltage requirements, and signal characteristics remain identical across all listed equivalents.

Q: Can I use R5F64189DFB#U0 as a direct replacement?

A: Yes. R5F64189DFB#U0 is electrically and mechanically equivalent to R5F64179DFB#UB. It belongs to the M16C/R32C/100/118 series and is an active product with full manufacturing support.

Q: Why is the original R5F64179DFB#UB marked as obsolete?

A: Product obsolescence reflects Renesas Electronics' lifecycle management. Active equivalents with identical specifications remain available for design continuity and production support.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All listed substitutes are ROHS3 compliant with MSL 3 ratings (168 hours), matching the original part's compliance profile.

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