DF36037GFZV Equivalent & Substitute Parts

Part Overview

The DF36037GFZV is a 16-bit H8/300H Tiny microcontroller manufactured by Renesas Electronics Corporation, featuring 56KB FLASH memory and a 64-LFQFP package. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, redesigns, and production continuity. The H8/300H architecture and specific peripheral configuration require careful evaluation when selecting substitute components to ensure system compatibility and performance requirements are maintained.

Substiute Parts

DF36037GFZV

Renesas Electronics CorporationIn Stock: 686DF36037GFZV Datasheet

Current PartRFQ

MC9S12P64VLH

NXP USA Inc.In Stock: 908MC9S12P64VLH Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DF36037GFZV is evaluated based on the following critical parameters:

Mandatory Compatibility Criteria:

• Core Size: 16-Bit architecture requirement
• Package Type: 64-LQFP (10x10) form factor for PCB compatibility
• Mounting Type: Surface Mount
• Program Memory Type: FLASH-based storage
• Voltage Supply Range: Overlap with 3V ~ 5.5V operating window
• Connectivity: CANbus, SCI support for communication protocols
• Peripherals: LVD, POR, PWM, WDT functional equivalence

Functional Equivalence Parameters:

• I/O Count: Minimum 45 pins for signal routing
• Data Converter: A/D conversion capability
• Operating Temperature: Support for -20°C ~ 75°C range
• Compliance: ROHS3 and REACH status alignment

The MC9S12P64VLH qualifies as a substitute based on matching package geometry, 16-bit core architecture, FLASH memory configuration, required connectivity protocols, and peripheral feature set. While architectural differences exist between the H8/300H and HCS12 cores, the electrical and mechanical parameters align within acceptable substitution boundaries for applications requiring equivalent I/O density, memory capacity, and communication interfaces.

Parameter Comparison

Engineering Selection Recommendations

The MC9S12P64VLH is an active-status substitute for the obsolete DF36037GFZV. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and legacy system support.

The MC9S12P64VLH provides enhanced specifications across multiple parameters: increased clock speed (32MHz vs. 20MHz), larger program memory (64KB vs. 56KB), expanded RAM (4K x 8 vs. 3K x 8), additional I/O pins (49 vs. 45), and improved A/D converter resolution (10x12b vs. 8x10b). The extended operating temperature range (-40°C ~ 105°C) accommodates broader environmental conditions compared to the original device (-20°C ~ 75°C).

Both devices share identical 64-LQFP package geometry, surface mount configuration, and core peripheral feature set (LVD, POR, PWM, WDT). Connectivity protocols include CANbus and SCI on both devices, with the substitute offering SPI in place of SSU.

Selection of the MC9S12P64VLH is appropriate for applications where the DF36037GFZV is no longer available and where the enhanced performance characteristics and active product status support long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the MC9S12P64VLH directly replace the DF36037GFZV without PCB modifications?

A: Both devices use the 64-LQFP (10x10) package with identical pin count and footprint geometry. PCB layout compatibility is maintained. However, architectural differences between the H8/300H and HCS12 cores require firmware evaluation and potential code adaptation to ensure functional equivalence in the target application.

Q: What are the key differences in memory configuration between these devices?

A: The DF36037GFZV provides 56KB program FLASH and 3KB RAM. The MC9S12P64VLH offers 64KB program FLASH, 4KB RAM, and includes 4KB EEPROM. Applications requiring the specific memory footprint of the original device must account for these differences in firmware allocation and data storage strategies.

Q: Are the connectivity protocols compatible between these microcontrollers?

A: Both devices support CANbus and SCI protocols. The DF36037GFZV includes SSU connectivity, while the MC9S12P64VLH provides SPI. Applications dependent on SSU functionality require alternative communication interface implementation or continued use of the original device if available.

Q: What is the impact of the speed difference (20MHz vs. 32MHz)?

A: The MC9S12P64VLH operates at 32MHz compared to the DF36037GFZV at 20MHz. This increased clock speed provides higher computational throughput but may require timing-sensitive firmware review to ensure compatibility with peripheral timing requirements and interrupt handling routines.

Q: How do the operating temperature ranges affect device selection?

A: The DF36037GFZV operates from -20°C to 75°C, while the MC9S12P64VLH supports -40°C to 105°C. Applications requiring extended temperature operation benefit from the substitute device's broader thermal range. Conversely, applications with temperature constraints within the original range are unaffected by this specification difference.

Q: Are both devices compliant with current regulatory requirements?

A: Both the DF36037GFZV and MC9S12P64VLH are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and use.