DF36034GFPV Equivalent & Substitute Parts

Part Overview

The DF36034GFPV is a 16-bit H8/300H Tiny microcontroller manufactured by Renesas Electronics Corporation, featuring 32KB FLASH memory, 2KB RAM, and a 20MHz clock speed in a 64-LFQFP package. This device is classified as obsolete, making equivalent substitute parts necessary for new designs, production continuity, and long-term system support. The part operates across a 3V to 5.5V supply range with integrated peripherals including CANbus, SCI, SSU connectivity, and support for PWM, WDT, LVD, and POR functions.

Key Parameters

Parameter	DF36034GFPV Value
Core Processor	H8/300H
Core Size	16-Bit
Clock Speed	20MHz
Program Memory Size	32KB (32K x 8)
Program Memory Type	FLASH
RAM Size	2K x 8
Voltage Supply Range	3V ~ 5.5V
Number of I/O	45
Package Type	64-LFQFP (10x10)
Mounting Type	Surface Mount
Operating Temperature	-20°C ~ 75°C
Product Status	Obsolete
RoHS Compliance	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the DF36034GFPV is determined by the following critical parameters:

Core Compatibility Parameters:

16-bit core processor architecture
32KB FLASH program memory capacity
2KB RAM minimum
64-pin LQFP package footprint (10x10mm)
Surface mount technology

Operational Parameters:

Supply voltage range compatibility (minimum 3V, maximum 5.5V overlap required)
Operating temperature range support
Peripheral feature set (CANbus, SCI, PWM, WDT, LVD, POR)

Compliance Parameters:

ROHS3 compliance
Active or available product status

The S9S12P32J0MLH meets these substitution criteria through matching core architecture, memory configuration, package footprint, and compliance certifications, while offering enhanced specifications in clock speed, I/O count, and temperature range.

Parameter Comparison

Parameter	DF36034GFPV	S9S12P32J0MLH	Compatibility Notes
Core Size	16-Bit	16-Bit	Matched
Program Memory Size	32KB (32K x 8)	32KB (32K x 8)	Matched
RAM Size	2K x 8	2K x 8	Matched
Clock Speed	20MHz	32MHz	Substitute offers higher performance
Number of I/O	45	49	Substitute provides additional I/O
Voltage Supply Range	3V ~ 5.5V	1.72V ~ 5.5V	Substitute supports extended lower voltage
Data Converters	A/D 8x10b	A/D 10x12b	Substitute offers higher resolution
EEPROM Size	—	4K x 8	Substitute includes EEPROM
Package Type	64-LFQFP (10x10)	64-LQFP (10x10)	Matched footprint and pin count
Operating Temperature	-20°C ~ 75°C	-40°C ~ 125°C	Substitute supports extended range
Connectivity	CANbus, SCI, SSU	CANbus, SCI, SPI	Core protocols matched; SSU vs SPI difference
Peripherals	LVD, POR, PWM, WDT	LVD, POR, PWM, WDT	Matched
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Matched
Product Status	Obsolete	Active	Substitute is actively manufactured

Engineering Selection Recommendations

The S9S12P32J0MLH is a qualified substitute for the DF36034GFPV based on the following engineering criteria:

Compliance & Availability: The DF36034GFPV is obsolete, limiting long-term procurement and support. The S9S12P32J0MLH maintains active production status with ROHS3 compliance, ensuring regulatory alignment and supply chain continuity.

Package & Footprint Compatibility: Both devices utilize 64-pin LQFP packages with identical 10x10mm footprints and surface mount technology, enabling direct PCB layout compatibility without redesign.

Memory & Core Architecture: Matching 16-bit core architecture, 32KB FLASH, and 2KB RAM ensure functional equivalence for firmware execution and memory allocation. The substitute's additional 4KB EEPROM provides enhanced non-volatile storage capability.

Peripheral Feature Set: Both devices support CANbus, SCI, PWM, WDT, LVD, and POR functions. The connectivity difference (SSU vs SPI) requires protocol-level evaluation based on system requirements.

Performance Enhancement: The S9S12P32J0MLH operates at 32MHz versus 20MHz, providing 60% higher processing speed. Extended operating temperature range (-40°C to 125°C) and lower minimum supply voltage (1.72V) expand application flexibility.

Voltage Supply Compatibility: The substitute's 1.72V to 5.5V range encompasses the original 3V to 5.5V specification, ensuring compatibility with existing power supply designs.

Frequently Asked Questions (FAQ)

Q: Can the S9S12P32J0MLH directly replace the DF36034GFPV without PCB modifications?

A: Yes, for physical integration. Both devices share identical 64-pin LQFP (10x10mm) footprints and surface mount technology. However, firmware validation is required to confirm protocol compatibility, particularly regarding SSU versus SPI connectivity differences.

Q: What are the key differences between these microcontrollers?

A: The S9S12P32J0MLH offers higher clock speed (32MHz vs 20MHz), additional I/O pins (49 vs 45), integrated EEPROM (4KB),

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