DF36034GFZV Equivalent & Substitute Parts

Part Overview

The DF36034GFZV is a 16-bit H8/300H Tiny microcontroller manufactured by Renesas Electronics Corporation, featuring 32KB FLASH memory, 2KB RAM, and a 20MHz operating frequency in a 64-LFQFP package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support, redesigns, and production continuity. The part integrates CANbus, SCI, and SSU connectivity with 45 I/O pins, suitable for embedded control applications requiring moderate processing capability and integrated communication interfaces.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution of the DF36034GFZV is determined by the following critical parameters:

Core Architecture & Memory Configuration: Both main and substitute parts must maintain 16-bit core architecture with 32KB FLASH and 2KB RAM minimum to preserve firmware compatibility and functional equivalence.
Package Compatibility: The 64-LQFP (10x10) package footprint is mandatory for direct PCB-level substitution without layout redesign.
Voltage Supply Range: Operating voltage must overlap with or exceed the 3V ~ 5.5V range to ensure compatibility with existing power supply designs.
I/O Pin Count: Minimum 45 I/O pins required to maintain interface connectivity.
Connectivity Interfaces: CANbus and SCI support are essential for system communication requirements.
Compliance Standards: RoHS3 compliance and REACH unaffected status ensure regulatory alignment.

The S9S12P32J0MLH from NXP USA Inc. qualifies as a substitute based on matching core memory specifications, package footprint, voltage compatibility, and regulatory compliance, despite architectural differences between the H8/300H and HCS12 cores.

Parameter Comparison

Parameter	DF36034GFZV (Renesas)	S9S12P32J0MLH (NXP)
Core Processor	H8/300H	HCS12
Core Size	16-Bit	16-Bit
Operating Speed	20MHz	32MHz
Program Memory	32KB FLASH	32KB FLASH
RAM	2K x 8	2K x 8
EEPROM	Not specified	4K x 8
Supply Voltage	3V ~ 5.5V	1.72V ~ 5.5V
Number of I/O	45	49
Data Converters	A/D 8x10b	A/D 10x12b
Connectivity	CANbus, SCI, SSU	CANbus, SCI, SPI
Peripherals	LVD, POR, PWM, WDT	LVD, POR, PWM, WDT
Operating Temperature	-20°C ~ 75°C	-40°C ~ 125°C
Package Type	64-LFQFP (10x10)	64-LQFP (10x10)
Product Status	Obsolete	Active
RoHS Compliance	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

The S9S12P32J0MLH serves as an active substitute for the obsolete DF36034GFZV based on the following engineering criteria:

Product Status Alignment: The substitute part maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete main part.
Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying current environmental and safety requirements.
Memory Equivalence: Identical 32KB FLASH and 2KB RAM configuration preserves firmware compatibility at the memory level.
Package Footprint: Both parts use 64-LQFP (10x10) surface mount packages, enabling direct PCB substitution without layout modifications.
Voltage Supply Compatibility: The substitute part's 1.72V ~ 5.5V range encompasses the original 3V ~ 5.5V specification, ensuring compatibility with existing power supply designs.
Interface Capability: Both parts provide CANbus and SCI connectivity required for system communication, with the substitute offering SPI in place of SSU.
Peripheral Feature Parity: Matching LVD, POR, PWM, and WDT peripherals maintain functional equivalence for system control and monitoring.

Selection of the S9S12P32J0MLH requires firmware architecture assessment due to core processor differences between H8/300H and HCS12 instruction sets.

Frequently Asked Questions (FAQ)

Q: Can the S9S12P32J0MLH directly replace the DF36034GFZV without PCB modifications?

A: Yes, both parts use identical 64-LQFP (10x10) package footprints, enabling direct PCB-level substitution. However, firmware recompilation for the HCS12 architecture is required.

Q: What are the key differences between these parts?

A: The main differences are processor architecture (H8/300H vs. HCS12), operating speed (20MHz vs. 32MHz), I/O count (45 vs. 49 pins), and connectivity interface options (SSU vs. SPI). Memory configuration and package footprint remain identical.

Q: Is the substitute part's higher operating speed compatible with the original design?

A: The 32MHz capability of the S9S12P32J0MLH is backward compatible with designs requiring 20MHz operation. System timing and peripheral configurations must be validated during firmware porting.

Q: Does the substitute part provide additional memory capacity?

A: The S9S12P32J0MLH includes 4KB EEPROM, which is not present in the DF36034GFZV. Program FLASH and RAM remain equivalent at 32KB and 2KB respectively.

Q: Are there voltage supply considerations when substituting?

A: The substitute part's lower minimum voltage (1.72V vs. 3V) provides greater flexibility. Existing 3V ~ 5.5V power supply designs remain fully compatible.

Q: What connectivity differences should be considered?

A: Both parts support CANbus and SCI. The original part includes SSU connectivity, while the substitute provides SPI. System communication requirements must be evaluated against available interfaces.

Q: Are moisture sensitivity levels equivalent?

A: Yes, both parts maintain MSL 3 (168 Hours) rating, requiring identical handling and storage protocols.

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