UPD70F3914GF(R)-GAS-AX Equivalent & Substitute Parts

Part Overview

The UPD70F3914GF(R)-GAS-AX is a 32-bit single-core V850E1 microcontroller manufactured by Renesas Electronics Corporation. This device integrates 384KB of FLASH program memory, 24KB of RAM, and operates at 100MHz with a 1.35V to 1.65V supply voltage range. The microcontroller features 55 I/O pins, integrated DMA, LVD, POR, PWM, and WDT peripherals, along with multiple communication interfaces including CSI, I2C, and UART/USART.

The UPD70F3914GF(R)-GAS-AX has reached obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support long-term product maintenance and production requirements.

Substiute Parts

UPD70F3914GF(R)-GAS-AX

Renesas Electronics CorporationIn Stock: 773UPD70F3914GF(R)-GAS-AX Datasheet

Current PartRFQ

R5F56514ADFP#30

Renesas Electronics CorporationIn Stock: 1287R5F56514ADFP#30 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UPD70F3914GF(R)-GAS-AX is evaluated based on the following critical parameters:

Core Architecture & Performance: The substitute must maintain 32-bit single-core processing capability with compatible instruction set architecture to support existing firmware without major modifications.

Memory Configuration: Program memory capacity of 384KB or greater ensures existing code can be accommodated. RAM size of 24KB or greater supports the same application workload.

Operating Voltage: The substitute must operate within or encompass the 1.35V to 1.65V supply range, or provide compatible voltage regulation options.

Package & Pin Count: The 100-LQFP package with 55 I/O pins establishes the physical and electrical interface requirements. Substitutes must maintain compatible pin assignments for critical functions.

Peripheral Set: Presence of DMA, LVD, POR, PWM, and WDT peripherals is required for functional equivalence.

Compliance & Status: RoHS3 compliance and active product status ensure long-term availability and regulatory alignment.

The R5F56514ADFP#30 qualifies as a substitute based on its 32-bit single-core architecture, enhanced memory capacity (512KB FLASH, 256KB RAM), compatible 100-LQFP package, presence of required peripherals, and active product status from the same manufacturer.

Parameter Comparison

Engineering Selection Recommendations

The R5F56514ADFP#30 is the qualified substitute for the UPD70F3914GF(R)-GAS-AX based on the following engineering criteria:

Product Status: The R5F56514ADFP#30 maintains active product status, ensuring continued availability, manufacturing support, and long-term supply chain stability compared to the obsolete UPD70F3914GF(R)-GAS-AX.

Regulatory Compliance: Both devices are ROHS3 compliant and carry identical ECCN and HTSUS classifications, confirming equivalent regulatory standing and export compliance.

Memory Headroom: The R5F56514ADFP#30 provides 512KB FLASH and 256KB RAM, exceeding the original 384KB FLASH and 24KB RAM specifications. This additional memory capacity supports firmware expansion and enhanced functionality without architectural constraints.

Performance Enhancement: The 120MHz operating speed of the R5F56514ADFP#30 exceeds the 100MHz specification of the original part, providing performance margin for demanding applications.

Peripheral Compatibility: Both devices integrate the required DMA, LVD, POR, PWM, and WDT peripherals, maintaining functional equivalence for control and monitoring applications.

Package Compatibility: Both devices use 100-pin LQFP packages with compatible physical dimensions (14x14mm), supporting direct PCB layout compatibility with minimal redesign.

Frequently Asked Questions (FAQ)

Q: Can the R5F56514ADFP#30 directly replace the UPD70F3914GF(R)-GAS-AX without firmware modification?

A: The R5F56514ADFP#30 uses a different processor core (RXv2 versus V850E1) and instruction set architecture. Firmware recompilation and validation are required. However, the enhanced memory capacity and peripheral set support equivalent or improved functionality.

Q: What are the key differences in supply voltage between these devices?

A: The UPD70F3914GF(R)-GAS-AX operates at 1.35V to 1.65V, while the R5F56514ADFP#30 operates at 2.7V to 3.6V. Power supply redesign is necessary to accommodate the higher voltage requirement of the substitute part.

Q: Are the pin assignments identical between these two devices?

A: Both devices use 100-pin LQFP packages, but pin assignments differ due to different processor cores and peripheral configurations. PCB layout modifications and signal routing adjustments are required.

Q: Does the R5F56514ADFP#30 support the same communication interfaces?

A: The R5F56514ADFP#30 provides expanded connectivity including CANbus, EBI/EMI, Ethernet, I2C, LINbus, MMC/SD, QSPI, SCI, SPI, UART/USART, and USB. The original UPD70F3914GF(R)-GAS-AX supports CSI, I2C, and UART/USART. The substitute offers greater interface flexibility.

Q: What is the moisture sensitivity level difference?

A: The UPD70F3914GF(R)-GAS-AX has MSL 1 (unlimited shelf life), while the R5F56514ADFP#30 has MSL 3 (168 hours). The substitute requires more stringent moisture control during storage and handling.

Q: Is the R5F56514ADFP#30 available in the same packaging format?

A: Both devices use 100-pin LQFP packages with 14x14mm dimensions. The R5F56514ADFP#30 is supplied in Tray packaging, while the original part packaging is not specified. Packaging format compatibility depends on assembly process requirements.