R5F21331CDFP#V2 Equivalent & Substitute Parts

Part Overview

The R5F21331CDFP#V2 is a 16-bit microcontroller from Renesas Electronics Corporation's R8C/3x/33C series, designed for embedded applications requiring compact flash memory and integrated connectivity interfaces. This device features 4KB of FLASH program memory, 512 bytes of RAM, and 4K x 8 EEPROM, operating at 20MHz with a supply voltage range of 1.8V to 5.5V. The part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Core Processor	R8C
Core Size	16-Bit
Operating Speed	20MHz
Program Memory Type	FLASH
Program Memory Size	4KB (4K x 8)
EEPROM Size	4K x 8
RAM Size	512 x 8
Supply Voltage Range	1.8V ~ 5.5V
Package Type	32-LQFP (7x7)
Number of I/O	27
Operating Temperature	-40°C ~ 85°C
Connectivity Interfaces	I2C, LINbus, SIO, SSU, UART/USART
Peripherals	POR, PWM, Voltage Detect, WDT
Data Converters	A/D 12x10b; D/A 2x8b
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the R5F21331CDFP#V2 is determined by strict equivalence across the following critical parameters:

Core Architecture: R8C 16-bit processor
Memory Configuration: 4KB FLASH program memory, 4K x 8 EEPROM, 512 x 8 RAM
Operating Frequency: 20MHz
Supply Voltage Range: 1.8V ~ 5.5V
Package: 32-LQFP (7x7)
I/O Count: 27 pins
Connectivity: I2C, LINbus, SIO, SSU, UART/USART
Peripheral Set: POR, PWM, Voltage Detect, WDT
Data Conversion: A/D 12x10b, D/A 2x8b
Temperature Range: -40°C ~ 85°C

The R5F21331CDFP#30 meets all specified electrical and mechanical parameters, differing only in product status classification and inventory availability.

Parameter Comparison

Parameter	R5F21331CDFP#V2 (Main)	R5F21331CDFP#30 (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Series	R8C/3x/33C	R8C/3x/33C
Core Processor	R8C	R8C
Core Size	16-Bit	16-Bit
Operating Speed	20MHz	20MHz
Program Memory Size	4KB (4K x 8)	4KB (4K x 8)
Program Memory Type	FLASH	FLASH
EEPROM Size	4K x 8	4K x 8
RAM Size	512 x 8	512 x 8
Supply Voltage Range	1.8V ~ 5.5V	1.8V ~ 5.5V
Number of I/O	27	27
Package Type	32-LQFP (7x7)	32-LQFP (7x7)
Connectivity Interfaces	I2C, LINbus, SIO, SSU, UART/USART	I2C, LINbus, SIO, SSU, UART/USART
Peripherals	POR, PWM, Voltage Detect, WDT	POR, PWM, Voltage Detect, WDT
Data Converters	A/D 12x10b; D/A 2x8b	A/D 12x10b; D/A 2x8b
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active
Inventory Status	1037 Pcs New Original In Stock	970 Pcs New Original In Stock

Engineering Selection Recommendations

The R5F21331CDFP#30 is a direct functional equivalent to the R5F21331CDFP#V2. Both parts are manufactured by Renesas Electronics Corporation and share identical electrical specifications, memory configurations, and peripheral sets. The primary distinction is product status: the R5F21331CDFP#V2 is classified as obsolete, while the R5F21331CDFP#30 maintains active status.

Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring equivalent environmental and regulatory performance. Selection between these parts should be based on availability and supply chain continuity requirements. The R5F21331CDFP#30 is recommended for new designs and ongoing production due to its active product status.

Frequently Asked Questions (FAQ)

Q: Are the R5F21331CDFP#V2 and R5F21331CDFP#30 pin-compatible?

A: Yes. Both parts use the 32-LQFP (7x7) package with 27 I/O pins and identical pinout configurations. Direct PCB substitution is possible without layout modifications.

Q: What is the difference between these two part numbers?

A: The parts are electrically and mechanically identical. The difference lies in the suffix designation (#V2 versus #30) and product lifecycle status. The R5F21331CDFP#V2 is obsolete, while the R5F21331CDFP#30 is active.

Q: Can I use R5F21331CDFP#30 as a replacement in existing designs?

A: Yes. The R5F21331CDFP#30 provides complete functional equivalence across all specified parameters, including memory size, operating frequency, supply voltage range, connectivity interfaces, and peripheral functionality.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical RoHS3 compliance, moisture sensitivity levels, and regulatory certifications.

Q: What should I consider when transitioning from the obsolete part?

A: Verify inventory availability of the R5F21331CDFP#30 for your production timeline. Both parts are electrically identical, so firmware and hardware designs require no modification.

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