R5F64185DFD#2B Equivalent & Substitute Parts

Part Overview

The R5F64185DFD#2B is a 16/32-bit microcontroller from Renesas Electronics Corporation belonging to the M16C/R32C/100/118 series. This embedded IC operates at 50MHz with 384KB of FLASH program memory and is housed in a 144-LFQFP surface mount package. The device integrates CANbus, I2C, UART/USART connectivity alongside DMA, PWM, and watchdog timer peripherals, making it suitable for industrial and automotive embedded applications requiring real-time processing capabilities.

The R5F64185DFD#2B maintains Active product status with 940 units currently in stock. Identifying equivalent substitute parts becomes necessary when addressing supply chain constraints, inventory optimization, or when transitioning between product variants within the same microcontroller family that maintain identical electrical and mechanical specifications.

Substiute Parts

R5F64185DFD#2B

Renesas Electronics CorporationIn Stock: 1050R5F64185DFD#2B Datasheet

Current PartRFQ

R5F64175DFD#UB

Renesas Electronics CorporationIn Stock: 1150R5F64175DFD#UB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the R5F64185DFD#2B is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part R5F64175DFD#UB qualifies as a parametric equivalent based on the following matching criteria:

Electrical Equivalence Parameters:

• Identical core processor architecture (R32C/100)
• Matching core size (16/32-Bit)
• Identical operating frequency (50MHz)
• Equivalent program memory capacity (384KB FLASH)
• Matching EEPROM size (8K x 8)
• Matching RAM size (40K x 8)
• Identical supply voltage range (3V ~ 5.5V)
• Identical data converter specifications (A/D 34x10b; D/A 2x8b)
• Matching I/O count (120 pins)
• Identical connectivity interfaces (CANbus, EBI/EMI, I2C, IEBus, UART/USART)
• Identical peripheral set (DMA, LVD, PWM, WDT)
• Matching operating temperature range (-40°C ~ 85°C)

Mechanical Equivalence Parameters:

• Identical package type (144-LQFP)
• Identical supplier device package (144-LFQFP 20x20)
• Identical mounting type (Surface Mount)
• Matching MSL rating (3, 168 Hours)

Compliance Equivalence:

• Both parts maintain ROHS3 compliance
• Both parts are REACH Unaffected

The primary distinction between these parts lies in product status and series designation. The R5F64185DFD#2B belongs to the M16C/R32C/100/118 series and maintains Active status, while the R5F64175DFD#UB belongs to the M16C/R32C/100/117 series and carries Obsolete status. The packaging format differs (standard versus Tray), and the base product numbers differ (R5F64185 versus R5F64175), reflecting variant designations within the same microcontroller family.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: R5F64185DFD#2B

The R5F64185DFD#2B is the recommended primary selection for new designs and ongoing production. This part maintains Active product status from Renesas Electronics Corporation, ensuring continued availability, technical support, and long-term supply chain stability. The part carries full ROHS3 compliance and REACH Unaffected status, meeting current environmental and regulatory requirements for industrial and automotive embedded applications.

Substitute Selection: R5F64175DFD#UB

The R5F64175DFD#UB functions as a direct parametric equivalent for applications where the R5F64185DFD#2B is unavailable. This substitute maintains identical electrical specifications, memory configuration, peripheral set, and package dimensions. However, the R5F64175DFD#UB carries Obsolete product status, indicating that Renesas Electronics Corporation has discontinued active production and support. The part is available in Tray packaging format, whereas the primary part uses standard packaging.

Selection Criteria:

Use R5F64175DFD#UB only when R5F64185DFD#2B supply is constrained and existing inventory of the substitute part is confirmed available. Both parts satisfy ROHS3 compliance and REACH requirements. The identical MSL rating (3, 168 Hours) ensures equivalent moisture handling and storage requirements. The matching 144-LFQFP (20x20) package specification confirms direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can R5F64175DFD#UB replace R5F64185DFD#2B in existing designs?

A: Yes. The R5F64175DFD#UB provides complete electrical and mechanical equivalence. All core processor specifications, memory sizes, operating frequencies, supply voltages, connectivity interfaces, and peripheral functions are identical. The 144-LFQFP (20x20) package dimensions and pin configuration match exactly, enabling direct substitution without PCB redesign or firmware modification.

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

A: The primary differences are product status and series designation. The R5F64185DFD#2B belongs to the M16C/R32C/100/118 series and maintains Active status. The R5F64175DFD#UB belongs to the M16C/R32C/100/117 series and carries Obsolete status. The base product numbers differ (R5F64185 versus R5F64175), and packaging format differs (standard versus Tray). All electrical and mechanical specifications remain identical.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain ROHS3 compliance and REACH Unaffected status. Both carry identical Moisture Sensitivity Level (MSL) ratings of 3 with 168-hour exposure limits. Storage and handling requirements are equivalent.

Q: What does Obsolete product status mean for R5F64175DFD#UB?

A: Obsolete status indicates that Renesas Electronics Corporation has discontinued active production of this part. The R5F64175DFD#UB remains available through existing inventory channels but will not receive new manufacturing runs or technical updates. Use this part only when R5F64185DFD#2B supply is unavailable and existing stock is confirmed.

Q: Are the package dimensions identical?

A: Yes. Both parts use the 144-LFQFP (20x20) package specification with identical physical dimensions, pin pitch, and mounting requirements. Surface mount assembly processes and PCB footprints are directly compatible without modification.

Q: Can I use either part interchangeably in production?

A: The R5F64185DFD#2B is the preferred production choice due to Active status and ongoing manufacturer support. The R5F64175DFD#UB serves as a substitute for supply continuity only. Once R5F64185DFD#2B supply is restored, transition back to the primary part to maintain long-term supply chain stability.

Q: Do these parts have different firmware or programming requirements?

A: No. Both parts use the identical R32C/100 core processor architecture. Firmware, bootloader code, and programming procedures are fully compatible. No code modifications or reprogramming are required when substituting between these parts.

Q: What is the inventory status for each part?

A: The R5F64185DFD#2B has 940 units in stock. The R5F64175DFD#UB has 1133 units in stock. Verify current availability before finalizing component selection for production orders.