DF38004FP4V Equivalent & Substitute Parts

Part Overview

The DF38004FP4V is an 8-bit H8/300L microcontroller manufactured by Renesas Electronics Corporation, featuring 32KB FLASH memory and a 64-LQFP package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and system maintenance. The part operates at 4MHz with a supply voltage range of 1.8V to 5.5V and includes integrated peripherals such as LCD driver, PWM, and watchdog timer functionality.

Substiute Parts

DF38004FP4V

Renesas Electronics CorporationIn Stock: 1169DF38004FP4V Datasheet

Current PartRFQ

R5F10WLCAFB#50

Renesas Electronics CorporationIn Stock: 2621R5F10WLCAFB#50 Datasheet

SimilarRFQ

S9S12P32J0MLH

NXP USA Inc.In Stock: 8300S9S12P32J0MLH Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DF38004FP4V are selected based on the following critical parameters that determine functional compatibility:

Matching Parameters:

• Package / Case: 64-LQFP (10x10) form factor
• Program Memory Size: 32KB (32K x 8) FLASH
• Mounting Type: Surface Mount
• RoHS Compliance: ROHS3 Compliant
• Moisture Sensitivity Level: 3 (168 Hours)

Allowable Variations:

• Core Size: Upgrade from 8-bit to 16-bit architecture
• Speed: Higher operating frequency acceptable
• RAM Size: Equal or greater capacity
• Voltage Supply Range: Overlapping or extended range
• Data Converters: Equal or greater resolution and channel count
• Peripherals: Equal or superset of integrated functions
• Operating Temperature: Extended range acceptable
• Product Status: Active status preferred for long-term availability

The substitute parts listed below meet these criteria while providing enhanced capabilities suitable for legacy system replacement and new design implementations.

Parameter Comparison

Engineering Selection Recommendations

R5F10WLCAFB#50 (Renesas RL78/L13): This substitute maintains Renesas ecosystem continuity with active product status. The 16-bit RL78 core provides enhanced processing capability while preserving the 32KB FLASH and 64-LQFP package compatibility. Extended operating temperature range (-40°C to 85°C) and additional EEPROM (4K x 8) support broader application requirements. The RL78/L13 series offers superior peripheral integration including DMA, LVD, and POR functions. Recommended for applications requiring Renesas platform consistency and long-term supply assurance.

S9S12P32J0MLH (NXP HCS12): This substitute provides the highest performance specification with 32MHz operation and extended temperature range (-40°C to 125°C). The HCS12 core delivers 16-bit processing with enhanced I/O count (49 pins) and superior analog conversion (10x12-bit A/D). CANbus connectivity and SPI support expand communication options. Recommended for applications demanding maximum processing performance, extended temperature operation, and multi-protocol communication requirements.

Both substitutes maintain ROHS3 compliance, identical package form factor, and equivalent FLASH memory capacity. Selection depends on ecosystem preference (Renesas vs. NXP), performance requirements, and temperature operating range specifications.

Frequently Asked Questions (FAQ)

Q: Can the R5F10WLCAFB#50 directly replace the DF38004FP4V without firmware modification?

A: The R5F10WLCAFB#50 shares the 64-LQFP package and 32KB FLASH memory, enabling pin-compatible hardware substitution. However, the architectural transition from 8-bit H8/300L to 16-bit RL78 requires firmware porting. Instruction set, peripheral register mapping, and interrupt handling differ between architectures. Firmware recompilation and functional testing are necessary.

Q: What are the key differences in peripheral functionality between these substitutes?

A: The DF38004FP4V includes LCD driver, PWM, and WDT. The R5F10WLCAFB#50 adds DMA, LVD, and POR capabilities while maintaining LCD and PWM support. The S9S12P32J0MLH provides LVD, POR, PWM, and WDT but excludes LCD driver functionality. Application-specific peripheral requirements determine suitability.

Q: Are all three parts compatible with the same PCB layout?

A: Yes. All three microcontrollers use the 64-LQFP (10x10) package with identical pin pitch and footprint. PCB layout and land pattern remain unchanged. However, pin function assignments differ between architectures, requiring schematic and firmware updates.

Q: Which substitute offers the best long-term availability?

A: Both R5F10WLCAFB#50 and S9S12P32J0MLH carry active product status, ensuring continued manufacturing and supply. The DF38004FP4V is obsolete. For production continuity, either active substitute is preferable, with selection based on ecosystem and performance requirements.

Q: What is the impact of the extended operating temperature range on reliability?

A: The S9S12P32J0MLH supports -40°C to 125°C operation, compared to the DF38004FP4V range of -20°C to 75°C. Extended temperature capability enables deployment in industrial and automotive environments. The R5F10WLCAFB#50 provides -40°C to 85°C range, suitable for industrial applications. Temperature rating selection depends on end-use environment specifications.

Q: Do the substitute parts require different power supply filtering or decoupling?

A: All three parts operate within overlapping voltage supply ranges (1.6V to 5.5V minimum across all devices). Standard decoupling practices for 64-pin microcontrollers apply uniformly. Refer to individual device datasheets for specific power distribution network recommendations, as peripheral integration density may influence current transient characteristics.