Equivalent & Substitute Parts for R5F64176DFB#UB

Part Overview

The R5F64176DFB#UB is a 16/32-bit microcontroller from Renesas Electronics Corporation's M16C/R32C/100/117 series, featuring 512KB FLASH memory and operating at 50MHz. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and production continuity. The part is housed in a 100-LFQFP package and supports multiple connectivity protocols including CANbus, I2C, and UART/USART interfaces.

Key Parameters

Parameter	Value
Core Processor	R32C/100
Core Size	16/32-Bit
Speed	50MHz
Program Memory Size	512KB (512K x 8)
Program Memory Type	FLASH
EEPROM Size	8K x 8
RAM Size	40K x 8
Voltage Supply (Vcc/Vdd)	3V ~ 5.5V
Number of I/O	84
Package / Case	100-LQFP
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the R5F64176DFB#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 (512KB FLASH)
EEPROM and RAM specifications (8K x 8 and 40K x 8 respectively)
Supply voltage range (3V ~ 5.5V)
I/O pin count (84)
Package form factor (100-LQFP)
Operating temperature range (-40°C ~ 85°C)
Connectivity and peripheral feature sets (CANbus, EBI/EMI, I2C, IEBus, UART/USART, DMA, LVD, PWM, WDT)

Identified substitutes maintain full parametric equivalence across all specified electrical and mechanical characteristics, ensuring direct functional replacement without design modification.

Parameter Comparison

Parameter	R5F64176DFB#UB (Main)	R5F64176DFB#U0	R5F64186PFB#2B
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation
Series	M16C/R32C/100/117	M16C/R32C/100/117	M16C/R32C/100/118
Core Processor	R32C/100	R32C/100	R32C/100
Core Size	16/32-Bit	16/32-Bit	16/32-Bit
Speed	50MHz	50MHz	50MHz
Program Memory Size	512KB (512K x 8)	512KB (512K x 8)	512KB (512K x 8)
Program Memory Type	FLASH	FLASH	FLASH
EEPROM Size	8K x 8	8K x 8	8K x 8
RAM Size	40K x 8	40K x 8	40K x 8
Voltage Supply (Vcc/Vdd)	3V ~ 5.5V	3V ~ 5.5V	3V ~ 5.5V
Number of I/O	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
Peripherals	DMA, LVD, PWM, WDT	DMA, LVD, PWM, WDT	DMA, LVD, PWM, WDT
Package / Case	100-LQFP	100-LQFP	100-LQFP
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

The R5F64176DFB#UB is obsolete and should be replaced with an active equivalent. Both substitute parts maintain full parametric compatibility with the original component.

R5F64176DFB#U0 is the direct variant substitute within the same M16C/R32C/100/117 series, offering identical electrical and mechanical specifications with active product status. This part is recommended as the primary replacement option.

R5F64186PFB#2B is a parametric equivalent from the M16C/R32C/100/118 series variant, providing identical core functionality, memory configuration, and interface capabilities. This part is recommended as an alternative when R5F64176DFB#U0 availability is constrained.

Both substitute parts carry ROHS3 compliance and MSL 3 rating, matching the original component's environmental and regulatory certifications.

Frequently Asked Questions (FAQ)

Q: Can R5F64176DFB#U0 be used as a direct replacement for R5F64176DFB#UB?

A: Yes. R5F64176DFB#U0 is a parametric equivalent with identical core processor, memory configuration, I/O count, voltage supply range, operating temperature, and package specifications. The primary difference is product status: R5F64176DFB#U0 is active while R5F64176DFB#UB is obsolete.

Q: What is the difference between R5F64176DFB#U0 and R5F64186PFB#2B?

A: Both parts are parametrically equivalent and functionally interchangeable. The difference lies in series designation: R5F64176DFB#U0 belongs to the M16C/R32C/100/117 series, while R5F64186PFB#2B belongs to the M16C/R32C/100/118 series. All electrical and mechanical parameters remain identical.

Q: Are there any package or pinout differences between these substitutes?

A: No. All three parts use the 100-LQFP (14x14) package with 84 I/O pins. Package dimensions, pin assignments, and mounting specifications are identical.

Q: Do the substitute parts support the same connectivity protocols?

A: Yes. Both R5F64176DFB#U0 and R5F64186PFB#2B support CANbus, EBI/EMI, I2C, IEBus, and UART/USART connectivity, with identical peripheral support including DMA, LVD, PWM, and WDT.

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

A: All three parts operate across -40°C to 85°C (TA), maintaining identical thermal specifications.

Q: Are compliance certifications identical across all three parts?

A: Yes. All parts are ROHS3 compliant, carry MSL 3 rating (168 hours), and are REACH unaffected, ensuring equivalent environmental and regulatory compliance.

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