DF36109GHV Equivalent & Substitute Parts

Part Overview

The DF36109GHV is a 16-bit H8/300H Tiny Microcontroller manufactured by Renesas Electronics Corporation, featuring 128KB FLASH memory and a 20MHz clock speed in a 100-LFQFP package. This device is classified as obsolete, making equivalent and substitute parts necessary for new designs and production continuity. The part operates across a 3V to 5.5V supply range with integrated peripherals including I2C, SCI connectivity, PWM, watchdog timer, and low-voltage detection.

Substiute Parts

DF36109GHV

Renesas Electronics CorporationIn Stock: 1113DF36109GHV Datasheet

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AT32UC3C1128C-AUT

Microchip TechnologyIn Stock: 2294AT32UC3C1128C-AUT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DF36109GHV is determined by the following critical parameters:

• Program Memory Capacity: 128KB FLASH memory is the primary matching criterion
• Package Form Factor: 100-pin QFP package (14x14mm) ensures mechanical and electrical compatibility
• Supply Voltage Range: 3V to 5.5V operation maintains compatibility with existing power distribution
• I/O Pin Count: Minimum 79 I/O pins required for functional equivalence
• Connectivity Interfaces: I2C and serial communication support
• Peripheral Set: PWM, watchdog timer, and voltage detection capabilities

The AT32UC3C1128C-AUT meets these substitution criteria through equivalent memory capacity, matching package dimensions, compatible voltage range, and comparable I/O availability. While the substitute features a 32-bit architecture and higher clock speed, these represent functional enhancements rather than incompatibilities for applications designed around the DF36109GHV specification.

Parameter Comparison

Engineering Selection Recommendations

The AT32UC3C1128C-AUT is an active product from Microchip Technology and represents a viable substitute for the obsolete DF36109GHV. Both devices maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring equivalent handling and storage requirements.

Selection of the AT32UC3C1128C-AUT is supported by:

• Active Product Status: Ensures long-term availability and supply chain continuity
• Regulatory Compliance: Both parts maintain ROHS3 and REACH compliance
• Memory Equivalence: Identical 128KB FLASH capacity
• Package Compatibility: Both use 100-pin QFP packages with 14x14mm footprint
• Voltage Compatibility: Matching 3V to 5.5V supply range
• Enhanced Capabilities: The substitute provides additional I/O pins (81 vs 79), expanded connectivity options, and broader operating temperature range (-40°C to 85°C vs -20°C to 75°C)

Frequently Asked Questions (FAQ)

Q: Can the AT32UC3C1128C-AUT directly replace the DF36109GHV in existing designs?

A: Direct replacement requires verification of firmware compatibility and instruction set differences. The DF36109GHV uses the H8/300H architecture while the AT32UC3C1128C-AUT uses the AVR32 architecture. Pin-to-pin compatibility exists for the 100-pin QFP package, but software migration is necessary.

Q: What are the key differences in memory architecture?

A: Both devices provide 128KB FLASH program memory. The AT32UC3C1128C-AUT offers significantly larger RAM (32K x 8 vs 5K x 8), which may reduce design constraints for buffer-intensive applications.

Q: Are the package dimensions identical?

A: Both parts use 100-pin QFP packages with 14x14mm footprints. The DF36109GHV uses LFQFP while the AT32UC3C1128C-AUT uses TQFP. These variants maintain compatible pitch and pin spacing for PCB layout purposes.

Q: What is the operating temperature difference impact?

A: The AT32UC3C1128C-AUT operates across -40°C to 85°C compared to the DF36109GHV range of -20°C to 75°C. This extended range provides greater flexibility for industrial and automotive applications.

Q: How do the connectivity options differ?

A: The DF36109GHV provides I2C and SCI interfaces. The AT32UC3C1128C-AUT includes these plus CANbus, Ethernet, IrDA, LINbus, SPI, UART/USART, and USB. Additional connectivity requires no additional components but demands firmware implementation.

Q: Are there data converter differences?

A: The DF36109GHV includes 16-channel 10-bit analog-to-digital conversion. The AT32UC3C1128C-AUT provides 16-channel 12-bit A/D plus 4-channel 12-bit D/A conversion, offering higher resolution and additional functionality.