Renesas Electronics R5F104FCAFP#X0 RL78/G14 Microcontroller Equivalent & Substitute Parts

Part Overview

The R5F104FCAFP#X0 is a 16-bit RL78/G14 microcontroller manufactured by Renesas Electronics Corporation, featuring 32KB FLASH program memory, 4KB EEPROM, and 4KB RAM in a 44-LQFP surface mount package. This device is classified as obsolete product status, making identification of equivalent and substitute parts essential for ongoing design support, production continuity, and system maintenance.

The RL78/G14 series operates across a wide supply voltage range of 1.6V to 5.5V with an internal oscillator and integrated peripherals including UART/USART, I2C, CSI, and LINbus connectivity. The microcontroller integrates 31 I/O pins, 10-bit analog-to-digital conversion, and standard embedded system peripherals such as watchdog timer, power-on reset, and low-voltage detection.

Substiute Parts

R5F104FCAFP#X0

Renesas Electronics CorporationIn Stock: 1135R5F104FCAFP#X0 Datasheet

Current PartRFQ

R5F104FCAFP#50

Renesas Electronics CorporationIn Stock: 920R5F104FCAFP#50 Datasheet

DirectRFQ

R5F104FCDFP#50

Renesas Electronics CorporationIn Stock: 964R5F104FCDFP#50 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the R5F104FCAFP#X0 are identified based on strict electrical and mechanical parameter equivalence within the RL78/G14 microcontroller family. The substitution logic is based on the following key parameters that must remain constant:

• Core processor architecture (RL78)
• Core size (16-Bit)
• Operating frequency (32MHz)
• Program memory capacity (32KB FLASH)
• EEPROM capacity (4K x 8)
• RAM capacity (4K x 8)
• I/O pin count (31)
• Supply voltage range (1.6V ~ 5.5V)
• Package type (44-LQFP 10x10)
• Peripheral set (CSI, I2C, LINbus, UART/USART, DMA, LVD, POR, PWM, WDT)
• Data converter specification (A/D 10x8/10b)
• Operating temperature range (-40°C ~ 85°C)
• RoHS compliance (ROHS3)
• MSL rating (3)

Variations in packaging format (tube versus tape & reel) and product status (obsolete versus active) do not affect functional or electrical equivalence. The identified substitutes maintain identical electrical characteristics and pinout compatibility.

Parameter Comparison

Engineering Selection Recommendations

The R5F104FCAFP#X0 is classified as obsolete product status. For new designs and production continuity, R5F104FCAFP#50 and R5F104FCDFP#50 are functionally equivalent alternatives, both carrying active product status from Renesas Electronics Corporation.

R5F104FCAFP#50 is a direct substitute with identical part number prefix and differs only in packaging format (tape & reel versus tube) and product status (active). This part maintains full electrical and mechanical compatibility with the original design.

R5F104FCDFP#50 is a parametric equivalent within the RL78/G14 family, offering identical electrical specifications, memory configuration, peripheral set, and package type. The part number variation reflects internal Renesas product line differentiation but does not affect functional compatibility in applications designed for the R5F104FCAFP#X0.

Both substitute parts comply with ROHS3 requirements and maintain the same MSL rating of 3 (168 Hours), ensuring compatibility with standard surface mount assembly processes. Active product status provides assured long-term availability and manufacturing support from Renesas Electronics Corporation.

Frequently Asked Questions (FAQ)

Q: Can R5F104FCAFP#50 be used as a direct replacement for R5F104FCAFP#X0?

A: Yes. R5F104FCAFP#50 is a direct substitute with identical electrical specifications, pinout, memory configuration, and peripheral set. The difference in packaging format (tape & reel versus tube) does not affect functional compatibility. Both parts are mechanically and electrically interchangeable in the same PCB design.

Q: What is the difference between R5F104FCAFP#50 and R5F104FCDFP#50?

A: Both parts are parametric equivalents with identical core specifications, memory capacity, I/O count, and peripheral functionality. The part number variation reflects internal Renesas product line differentiation. From an engineering perspective, both parts provide equivalent performance and compatibility in applications designed for the R5F104FCAFP#X0.

Q: Why is the original R5F104FCAFP#X0 marked as obsolete?

A: Product obsolescence is a standard lifecycle designation by manufacturers. Renesas Electronics Corporation has transitioned this part to end-of-life status. Active alternatives (R5F104FCAFP#50 and R5F104FCDFP#50) provide continued access to equivalent RL78/G14 microcontroller functionality with assured long-term availability.

Q: Are there any differences in compliance or certifications between the main part and substitutes?

A: All three parts comply with ROHS3 requirements and carry identical MSL ratings of 3 (168 Hours). R5F104FCAFP#50 and R5F104FCDFP#50 include REACH Unaffected status documentation. Compliance and environmental certifications are equivalent across all parts.

Q: Can these parts be used interchangeably in existing production?

A: Yes. R5F104FCAFP#50 and R5F104FCDFP#50 maintain identical pinout, electrical characteristics, memory organization, and peripheral configuration. No PCB redesign or firmware modification is required for substitution. Packaging format differences (tube versus tape & reel) affect only component handling and assembly logistics, not electrical performance.

Q: What is the significance of the #X0 and #50 suffixes in the part numbers?

A: These suffixes denote packaging and distribution format designations by Renesas Electronics Corporation. #X0 indicates tube packaging, while #50 indicates tape & reel packaging. The suffixes do not affect electrical specifications or functional compatibility.