R5F3650KCDFB#V0 Equivalent & Substitute Parts

Part Overview

The R5F3650KCDFB#V0 is a 16-bit M16C/60 microcontroller manufactured by Renesas Electronics Corporation, featuring 384KB Flash memory, 31KB RAM, and 8KB EEPROM. This device operates at 32MHz with a supply voltage range of 2.7V to 5.5V and is housed in a 100-LFQFP package. The part is currently classified as Obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Manufacturer	Renesas Electronics Corporation
Series	M16C™ M16C/60/65C
Core Processor	M16C/60
Core Size	16-Bit
Speed	32MHz
Program Memory Size	384KB (384K x 8) FLASH
EEPROM Size	8K x 8
RAM Size	31K x 8
Voltage Supply (Vcc/Vdd)	2.7V ~ 5.5V
Data Converters	A/D 26x10b; D/A 2x8b
Number of I/O	85
Package / Case	100-LQFP
Operating Temperature	-40°C ~ 85°C (TA)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the R5F3650KCDFB#V0 is determined by strict equivalence across the following critical parameters:

Core Processor & Architecture: M16C/60 16-bit processor at 32MHz
Memory Configuration: 384KB Flash, 31KB RAM, 8KB EEPROM
Electrical Specifications: 2.7V to 5.5V supply voltage range
Peripheral Set: EBI/EMI, I2C, SIO, UART/USART connectivity; DMA, LVD, POR, PWM, WDT peripherals
I/O Count: 85 I/O pins
Package: 100-LFQFP (14x14mm)
Data Converters: A/D 26x10b; D/A 2x8b

The identified substitute parts maintain identical electrical and functional specifications while differing only in product status and manufacturing date codes.

Parameter Comparison

Parameter	R5F3650KCDFB#V0	R5F3650KCDFB#30	R5F3650KDFB#3A
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation
Series	M16C™ M16C/60/65C	M16C™ M16C/60/65C	M16C™ M16C/60/65
Core Processor	M16C/60	M16C/60	M16C/60
Core Size	16-Bit	16-Bit	16-Bit
Speed	32MHz	32MHz	32MHz
Program Memory Size	384KB (384K x 8) FLASH	384KB (384K x 8) FLASH	384KB (384K x 8) FLASH
EEPROM Size	8K x 8	8K x 8	8K x 8
RAM Size	31K x 8	31K x 8	31K x 8
Voltage Supply (Vcc/Vdd)	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V
Data Converters	A/D 26x10b; D/A 2x8b	A/D 26x10b; D/A 2x8b	A/D 26x10b; D/A 2x8b
Number of I/O	85	85	85
Connectivity	EBI/EMI, I2C, SIO, UART/USART	EBI/EMI, I2C, SIO, UART/USART	EBI/EMI, I2C, SIO, UART/USART
Peripherals	DMA, LVD, POR, PWM, WDT	DMA, LVD, POR, PWM, WDT	DMA, LVD, POR, 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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	Not specified
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

For applications currently using the R5F3650KCDFB#V0, transition to either R5F3650KCDFB#30 or R5F3650KDFB#3A is supported by identical electrical and functional parameters. Both substitute parts are classified as Active products, ensuring continued availability and manufacturing support.

R5F3650KCDFB#30 is recommended as the primary substitute due to explicit ROHS3 compliance and MSL 3 rating documentation, maintaining full regulatory alignment with the original part. R5F3650KDFB#3A provides an alternative active source with equivalent core specifications, though compliance documentation is not specified in the available data.

Selection between active substitutes should be based on procurement availability, inventory levels, and supply chain requirements rather than technical differentiation.

Frequently Asked Questions (FAQ)

Q: Are these parts pin-compatible with the R5F3650KCDFB#V0?

A: Yes. All substitute parts use the 100-LFQFP (14x14mm) package with identical pinout and I/O configuration (85 I/O pins).

Q: Can I use these substitutes in existing PCB designs without modification?

A: Yes. The substitute parts maintain identical electrical specifications, memory configuration, and peripheral functionality. No PCB redesign is required.

Q: What is the difference between the three part numbers?

A: The parts differ only in product status and manufacturing date codes. The R5F3650KCDFB#V0 is Obsolete, while R5F3650KCDFB#30 and R5F3650KDFB#3A are Active products. All three are functionally and electrically equivalent.

Q: Are there any compliance differences between the substitutes?

A: R5F3650KCDFB#30 explicitly documents ROHS3 compliance and MSL 3 rating. R5F3650KDFB#3A does not include these specifications in available documentation. For applications requiring regulatory compliance verification, R5F3650KCDFB#30 is the documented choice.

Q: What is the MSL rating and why does it matter?

A: MSL 3 indicates the part can be stored for up to 168 hours at specified humidity levels before soldering. This affects handling and storage procedures during manufacturing. R5F3650KCDFB#30 explicitly specifies MSL 3; R5F3650KDFB#3A does not provide this specification.

Q: Can I mix these parts in the same production run?

A: Yes, provided your quality and compliance requirements are met. All three parts are functionally equivalent. However, if regulatory documentation is required, use only parts with explicit compliance certifications.

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