R5F104ACDSP#X0 Equivalent & Substitute Parts

Part Overview

The R5F104ACDSP#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 30-LSSOP surface mount package. This part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement continuity. Substitute parts must maintain identical electrical specifications, memory configuration, and package compatibility to ensure direct replacement capability.

Key Parameters

Parameter	Specification
Core Processor	RL78
Core Size	16-Bit
Speed	32MHz
Program Memory Size	32KB (32K x 8)
Program Memory Type	FLASH
EEPROM Size	4K x 8
RAM Size	4K x 8
Number of I/O	21
Voltage Supply (Vcc/Vdd)	1.6V ~ 5.5V
Data Converters	A/D 8x8/10b
Connectivity	CSI, I2C, LINbus, UART/USART
Peripherals	DMA, LVD, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	30-LSSOP (0.240", 6.10mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution for the R5F104ACDSP#X0 is determined by strict equivalence across all electrical and mechanical parameters. The following criteria define valid substitutes:

Identical core processor (RL78) and core size (16-Bit)
Matching clock speed (32MHz)
Identical memory configuration: 32KB FLASH program memory, 4KB EEPROM, 4KB RAM
Same number of I/O pins (21)
Identical voltage supply range (1.6V ~ 5.5V)
Matching data converter specification (A/D 8x8/10b)
Identical connectivity interfaces (CSI, I2C, LINbus, UART/USART)
Identical peripheral set (DMA, LVD, POR, PWM, WDT)
Same operating temperature range (-40°C ~ 85°C)
Identical package type and dimensions (30-LSSOP)
Matching RoHS and MSL compliance levels

The identified substitutes differ only in product status (active vs. obsolete) and packaging designations, with no variation in functional or electrical specifications.

Parameter Comparison

Parameter	R5F104ACDSP#X0	R5F104ACDSP#50	R5F104ACASP#50
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation
Series	RL78/G14	RL78/G14	RL78/G14
Core Processor	RL78	RL78	RL78
Core Size	16-Bit	16-Bit	16-Bit
Speed	32MHz	32MHz	32MHz
Program Memory Size	32KB (32K x 8)	32KB (32K x 8)	32KB (32K x 8)
Program Memory Type	FLASH	FLASH	FLASH
EEPROM Size	4K x 8	4K x 8	4K x 8
RAM Size	4K x 8	4K x 8	4K x 8
Number of I/O	21	21	21
Voltage Supply (Vcc/Vdd)	1.6V ~ 5.5V	1.6V ~ 5.5V	1.6V ~ 5.5V
Data Converters	A/D 8x8/10b	A/D 8x8/10b	A/D 8x8/10b
Connectivity	CSI, I2C, LINbus, UART/USART	CSI, I2C, LINbus, UART/USART	CSI, I2C, LINbus, UART/USART
Peripherals	DMA, LVD, POR, PWM, WDT	DMA, LVD, POR, PWM, WDT	DMA, LVD, POR, PWM, WDT
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
Package / Case	30-LSSOP (0.240", 6.10mm Width)	30-LSSOP (0.240", 6.10mm Width)	30-LSSOP (0.240", 6.10mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

Both R5F104ACDSP#50 and R5F104ACASP#50 are direct functional equivalents to the obsolete R5F104ACDSP#X0. Selection between these active alternatives should be based on:

R5F104ACDSP#50: This part maintains the identical part number designation with only the packaging suffix changed from #X0 to #50. It carries active product status and ROHS3 compliance with REACH Unaffected certification. Current inventory availability is 1092 units.

R5F104ACASP#50: This part represents a parametric equivalent with identical electrical and mechanical specifications. It also carries active product status, ROHS3 compliance, and REACH Unaffected certification. Current inventory availability is 758 units.

Both parts satisfy all compliance requirements and provide equivalent functionality for direct replacement applications. Selection may be influenced by inventory availability and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can R5F104ACDSP#50 or R5F104ACASP#50 directly replace R5F104ACDSP#X0 in existing designs?

A: Yes. Both substitute parts maintain identical electrical specifications, memory configuration, I/O count, connectivity interfaces, and 30-LSSOP package dimensions. No circuit modifications are required for direct substitution.

Q: What is the difference between R5F104ACDSP#50 and R5F104ACASP#50?

A: Both parts are parametrically equivalent with identical core specifications. The difference lies in the part number designation (ACDSP vs. ACASP), which reflects different packaging or distribution variants from Renesas Electronics Corporation. All functional and electrical parameters remain identical.

Q: Why is the original R5F104ACDSP#X0 marked as obsolete?

A: Obsolete status indicates the part is no longer in active production. The active equivalents R5F104ACDSP#50 and R5F104ACASP#50 provide continued access to this microcontroller architecture with current manufacturing support and compliance certifications.

Q: Are there any compatibility concerns with the 30-LSSOP package?

A: No. All three parts use the identical 30-LSSOP package with 0.240" width and 6.10mm dimensions. PCB footprints, solder reflow profiles, and handling procedures remain unchanged.

Q: What compliance certifications apply to the substitute parts?

A: Both R5F104ACDSP#50 and R5F104ACASP#50 are ROHS3 compliant with MSL 3 (168 Hours) moisture sensitivity rating. R5F104ACDSP#50 carries REACH Unaffected certification, as does R5F104ACASP#50.

Q: Can I use either substitute interchangeably, or should I select one over the other?

A: Both substitutes are functionally interchangeable. Selection may be based on inventory availability, lead time, or supply chain preference. No technical differentiation exists between the two options.

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