UPD78F1024GA-HAA-AX Equivalent & Substitute Parts

Part Overview

The UPD78F1024GA-HAA-AX is a 16-bit microcontroller from Renesas Electronics Corporation, part of the 78K0R/Kx3-L (USB) series. This device features 128KB of FLASH program memory, operates at 20MHz, and integrates USB connectivity alongside standard communication interfaces. The part is currently in active production status with 781 units available in stock.

Identifying equivalent and substitute parts becomes necessary when addressing supply chain constraints, design optimization requirements, or when transitioning between product generations within compatible architectural families.

Substiute Parts

UPD78F1024GA-HAA-AX

Renesas Electronics CorporationIn Stock: 846UPD78F1024GA-HAA-AX Datasheet

Current PartRFQ

R7FS128783A01CFL#AA1

Renesas Electronics CorporationIn Stock: 2067R7FS128783A01CFL#AA1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution analysis for the UPD78F1024GA-HAA-AX is based on the following critical parameters:

• Package Compatibility: Both main and substitute parts use 48-LQFP surface mount packaging, ensuring PCB layout compatibility
• Manufacturer Continuity: Both parts are manufactured by Renesas Electronics Corporation, maintaining supply chain consistency
• Compliance Standards: Both parts meet ROHS3 compliance and REACH unaffected status
• Connectivity Architecture: Both devices integrate USB connectivity with standard communication protocols (I2C, UART/USART)
• Core Peripherals: Both include DMA, LVD, POR, PWM, and WDT functionality

The identified substitute part R7FS128783A01CFL#AA1 represents a higher-performance alternative within the Renesas microcontroller portfolio, offering enhanced specifications while maintaining architectural compatibility at the package and interface level.

Parameter Comparison

Engineering Selection Recommendations

Both the UPD78F1024GA-HAA-AX and R7FS128783A01CFL#AA1 maintain active production status with ROHS3 compliance and REACH unaffected certification, ensuring regulatory alignment for current and future applications.

The UPD78F1024GA-HAA-AX remains the primary selection for designs requiring the 78K/0R architecture with established firmware and toolchain investments. This part offers 781 units in current inventory.

The R7FS128783A01CFL#AA1 serves as a substitute option for applications requiring enhanced performance specifications, including higher clock speed (32MHz vs. 20MHz), expanded memory resources (256KB FLASH and 24KB RAM vs. 128KB FLASH and 8KB RAM), and extended operating temperature range (-40°C to 105°C vs. -40°C to 85°C). This part has 1966 units in current inventory. Selection between these parts depends on application-specific performance and memory requirements rather than compliance or reliability considerations.

Frequently Asked Questions (FAQ)

Q: Can R7FS128783A01CFL#AA1 be used as a direct pin-for-pin replacement?

A: Both parts use 48-LQFP packaging with identical physical dimensions. However, the R7FS128783A01CFL#AA1 uses ARM® Cortex®-M0+ architecture while the UPD78F1024GA-HAA-AX uses 78K/0R architecture. Pin-level compatibility requires detailed pinout verification against specific application schematics. Firmware recompilation is necessary due to architectural differences.

Q: What are the key differences in memory configuration?

A: The UPD78F1024GA-HAA-AX provides 128KB FLASH and 8KB RAM. The R7FS128783A01CFL#AA1 provides 256KB FLASH, 24KB RAM, and includes 4KB EEPROM. Applications with larger code or data requirements benefit from the substitute part's expanded memory.

Q: Are both parts suitable for USB applications?

A: Both parts integrate USB connectivity. The UPD78F1024GA-HAA-AX is part of the 78K0R/Kx3-L (USB) series. The R7FS128783A01CFL#AA1 includes USB in its connectivity feature set. USB implementation details require consultation of respective device datasheets.

Q: What is the operating temperature difference impact?

A: The UPD78F1024GA-HAA-AX operates from -40°C to 85°C. The R7FS128783A01CFL#AA1 extends this to -40°C to 105°C. Applications requiring operation at elevated temperatures benefit from the substitute part's extended range.

Q: How do the supply voltage ranges compare?

A: The UPD78F1024GA-HAA-AX requires 1.8V to 3.6V. The R7FS128783A01CFL#AA1 accepts 1.6V to 5.5V, providing broader voltage compatibility for diverse power supply architectures.