R5F571MFDDFB#10 Equivalent & Substitute Parts

Part Overview

The R5F571MFDDFB#10 is a 32-bit single-core microcontroller from Renesas Electronics Corporation's RX71M series, operating at 240MHz with 2MB FLASH memory. This embedded IC is designed for applications requiring advanced connectivity options including CANbus, Ethernet, USB OTG, and multiple serial interfaces. The part is currently in active production status with 967 units available in stock. Identifying equivalent substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain component availability across manufacturing cycles.

Key Parameters

Parameter	Value
Manufacturer Part Number	R5F571MFDDFB#10
Manufacturer	Renesas Electronics Corporation
Series	RX71M
Core Processor	RXv2
Core Size	32-Bit Single-Core
Speed	240MHz
Program Memory Size	2MB (2M x 8)
Program Memory Type	FLASH
EEPROM Size	64K x 8
RAM Size	512K x 8
Package / Case	144-LQFP
Supplier Device Package	144-LFQFP (20x20)
Voltage - Supply (Vcc/Vdd)	2.7V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute parts for the R5F571MFDDFB#10 are identified based on strict parametric equivalence within the RX71M microcontroller series. The substitution logic is based on the following critical parameters that must remain identical:

Processor Architecture: RXv2 core
Memory Configuration: 2MB FLASH, 64K EEPROM, 512K RAM
Clock Speed: 240MHz
Package Type: 144-LQFP (20x20mm)
I/O Count: 111 pins
Connectivity Suite: CANbus, EBI/EMI, Ethernet, I2C, MMC/SD, QSPI, SCI, SPI, SSI, USB OTG
Peripheral Set: DMA, LVD, POR, PWM, WDT
Data Converters: A/D 29x12b, D/A 2x12b
Supply Voltage Range: 2.7V ~ 3.6V
Operating Temperature Range: -40°C ~ 85°C
Compliance: ROHS3 Compliant, REACH Unaffected

Parts meeting all these parameters are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Parameter	R5F571MFDDFB#10	R5F571MFCDFB#10
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Series	RX71M	RX71M
Core Processor	RXv2	RXv2
Core Size	32-Bit Single-Core	32-Bit Single-Core
Speed	240MHz	240MHz
Program Memory Size	2MB (2M x 8)	2MB (2M x 8)
Program Memory Type	FLASH	FLASH
EEPROM Size	64K x 8	64K x 8
RAM Size	512K x 8	512K x 8
Number of I/O	111	111
Connectivity	CANbus, EBI/EMI, Ethernet, I2C, MMC/SD, QSPI, SCI, SPI, SSI, USB OTG	CANbus, EBI/EMI, Ethernet, I2C, MMC/SD, QSPI, SCI, SPI, SSI, USB OTG
Peripherals	DMA, LVD, POR, PWM, WDT	DMA, LVD, POR, PWM, WDT
Data Converters	A/D 29x12b; D/A 2x12b	A/D 29x12b; D/A 2x12b
Oscillator Type	Internal	Internal
Voltage - Supply (Vcc/Vdd)	2.7V ~ 3.6V	2.7V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount
Package / Case	144-LQFP	144-LQFP
Supplier Device Package	144-LFQFP (20x20)	144-LFQFP (20x20)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Active	Active

Engineering Selection Recommendations

The R5F571MFCDFB#10 is a direct parametric equivalent to the R5F571MFDDFB#10. Both parts are manufactured by Renesas Electronics Corporation within the RX71M series and share identical electrical specifications, memory configurations, connectivity features, and package dimensions.

Selection Criteria:

Both parts maintain active production status, ensuring long-term availability and supply chain stability
Both parts comply with ROHS3 and REACH regulations, meeting environmental and regulatory requirements
Identical moisture sensitivity levels (MSL 3) require equivalent handling and storage protocols
Pin-to-pin compatibility is confirmed through identical I/O count (111 pins) and package type (144-LFQFP 20x20mm)
Firmware and software compatibility is maintained across both parts due to identical processor architecture, memory layout, and peripheral configuration

Selection between these parts should be based on current inventory availability and procurement lead times. The R5F571MFCDFB#10 currently has higher inventory (1197 units) compared to the R5F571MFDDFB#10 (967 units).

Frequently Asked Questions (FAQ)

Q: Are R5F571MFDDFB#10 and R5F571MFCDFB#10 pin-compatible?

A: Yes. Both parts use the 144-LFQFP (20x20mm) package with 111 I/O pins in identical pin configurations. PCB layouts designed for one part are directly compatible with the other.

Q: Can firmware developed for R5F571MFDDFB#10 run on R5F571MFCDFB#10?

A: Yes. Both parts feature identical RXv2 processor architecture, 2MB FLASH memory, 512K RAM, and 64K EEPROM. Firmware compiled for one part executes without modification on the other.

Q: What is the difference between R5F571MFDDFB#10 and R5F571MFCDFB#10?

A: These parts are parametric equivalents with identical electrical and mechanical specifications. The difference in part numbers reflects manufacturing lot or date code variations within Renesas Electronics Corporation's production process.

Q: Are there any connectivity differences between these parts?

A: No. Both parts provide identical connectivity options: CANbus, EBI/EMI, Ethernet, I2C, MMC/SD, QSPI, SCI, SPI, SSI, and USB OTG.

Q: Do both parts require the same supply voltage?

A: Yes. Both parts operate within the identical supply voltage range of 2.7V to 3.6V (Vcc/Vdd).

Q: Are the operating temperature ranges the same?

A: Yes. Both parts operate across the identical temperature range of -40°C to 85°C (TA).

Q: What is the moisture sensitivity level for both parts?

A: Both parts have MSL 3 rating with a 168-hour floor life. Identical moisture handling and storage protocols apply to both parts.

Q: Can I use these parts interchangeably in production?

A: Yes. Both parts are direct substitutes with identical form, fit, and function. Design validation performed on one part applies to the other.

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