TMS320F28334PTPQ Equivalent & Substitute Parts

Part Overview

The TMS320F28334PTPQ is a 32-bit single-core C28x Delfino microcontroller from Texas Instruments, operating at 150MHz with 256KB FLASH memory and 34K x 16 RAM. This device is classified as Obsolete, making identification of equivalent and substitute parts essential for ongoing system support and new design implementations. The part is qualified to AEC-Q100 automotive standards and features comprehensive connectivity options including CANbus, I2C, SPI, and UART/USART interfaces.

Substiute Parts

TMS320F28334PTPQ

Texas InstrumentsIn Stock: 1100TMS320F28334PTPQ Datasheet

Current PartRFQ

TMS320F28334PGFA

Texas InstrumentsIn Stock: 90204TMS320F28334PGFA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TMS320F28334PTPQ is determined by strict equivalence across the following critical parameters:

Core Architecture & Performance: The substitute must maintain identical C28x core processor architecture, 32-bit single-core configuration, and 150MHz operating speed to ensure software compatibility and performance parity.

Memory Configuration: Program memory must be 256KB FLASH (128K x 16) and RAM must be 34K x 16 to support existing firmware and application requirements without modification.

Electrical Specifications: Supply voltage range of 1.805V ~ 1.995V and A/D converter specification of 16x12b must be maintained for circuit compatibility.

Connectivity & Peripherals: All interface options (CANbus, EBI/EMI, I2C, McBSP, SCI, SPI, UART/USART) and peripheral functions (DMA, POR, PWM, WDT) must be present.

I/O Count: 88 I/O pins are required for pinout compatibility.

Package & Mounting: Surface mount configuration in 176-pin LQFP package family (24x24mm) is required for PCB compatibility.

Environmental & Compliance: Automotive grade with AEC-Q100 qualification and ROHS3 compliance must be maintained.

Parameter Comparison

Engineering Selection Recommendations

The TMS320F28334PGFA is the manufacturer-recommended substitute for the obsolete TMS320F28334PTPQ. Both devices are manufactured by Texas Instruments and share identical core architecture, memory configuration, electrical specifications, and connectivity features.

Product Status Consideration: The TMS320F28334PTPQ is classified as Obsolete, while the TMS320F28334PGFA is Active production. For new designs and ongoing system support, the TMS320F28334PGFA is the appropriate selection.

Compliance & Certification: Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical ECCN and HTSUS classifications, ensuring regulatory equivalence.

Operating Temperature Range: The main part supports -40°C ~ 125°C, while the substitute supports -40°C ~ 85°C. Applications requiring operation above 85°C must evaluate this specification difference against system requirements.

Moisture Sensitivity: The substitute exhibits improved moisture sensitivity characteristics (MSL 3 vs. MSL 4), providing enhanced reliability in humid storage and handling environments.

Package Compatibility: Both devices use 176-pin LQFP packages in 24x24mm form factor. The main part specifies 176-HLQFP with exposed pad, while the substitute specifies 176-LQFP. PCB layout compatibility should be confirmed for exposed pad thermal management requirements.

Frequently Asked Questions (FAQ)

Q: Can TMS320F28334PGFA directly replace TMS320F28334PTPQ in existing designs?

A: Yes. Both devices share identical core processor architecture, memory configuration, electrical specifications, I/O count, and peripheral features. No firmware or software modifications are required. PCB layout should be reviewed to confirm compatibility with package specifications.

Q: What is the primary reason for substitution?

A: The TMS320F28334PTPQ is Obsolete. The TMS320F28334PGFA is the active production equivalent from Texas Instruments, ensuring long-term availability and supply chain continuity.

Q: Are there operating temperature limitations with the substitute?

A: The substitute operates from -40°C to 85°C, compared to the main part's -40°C to 125°C range. Applications requiring operation above 85°C must evaluate this specification against system thermal requirements.

Q: What is the difference between 176-HLQFP and 176-LQFP packages?

A: Both are 176-pin LQFP packages in 24x24mm form factor. The HLQFP variant includes an exposed pad for thermal management. PCB layout compatibility should be confirmed based on thermal design requirements.

Q: Are compliance certifications equivalent?

A: Yes. Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical ECCN and HTSUS classifications.

Q: What is the inventory status of each part?

A: TMS320F28334PTPQ has 1,045 pieces in stock (Obsolete status). TMS320F28334PGFA has 90,100 pieces in stock (Active production), providing superior availability for new orders and long-term supply assurance.

Q: Does moisture sensitivity affect part selection?

A: The substitute has improved moisture sensitivity (MSL 3 with 168-hour floor life vs. MSL 4 with 72-hour floor life). This provides enhanced reliability in humid environments and extended handling windows during assembly operations.