TMS320F28068FPFPQ Equivalent & Substitute Parts

Part Overview

The TMS320F28068FPFPQ is a C28x C2000™ C28x Piccolo™ 32-bit single-core microcontroller manufactured by Texas Instruments. This device integrates 256KB FLASH program memory, 50K x 16 RAM, and operates at 90MHz with comprehensive connectivity options including CANbus, I2C, McBSP, SCI, SPI, and UART/USART interfaces. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Core Processor	C28x
Core Size	32-Bit Single-Core
Speed	90MHz
Program Memory Size	256KB (128K x 16)
Program Memory Type	FLASH
RAM Size	50K x 16
Voltage Supply (Vcc/Vdd)	1.71V ~ 1.995V
Data Converters	A/D 12x12b
Number of I/O	40
Connectivity	CANbus, I2C, McBSP, SCI, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, DMA, POR, PWM, WDT
Package Type	80-HTQFP (12x12)
Operating Temperature	-40°C ~ 125°C (TA)
Grade	Automotive
Qualification	AEC-Q100
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the TMS320F28068FPFPQ is determined by strict equivalence across the following critical parameters:

Core processor architecture (C28x)
Core configuration (32-Bit Single-Core)
Operating frequency (90MHz)
Program memory capacity and type (256KB FLASH)
RAM capacity (50K x 16)
Supply voltage range (1.71V ~ 1.995V)
I/O count (40 pins)
Connectivity suite (CANbus, I2C, McBSP, SCI, SPI, UART/USART)
Peripheral feature set (Brown-out Detect/Reset, DMA, POR, PWM, WDT)
Data converter specifications (A/D 12x12b)

The TMS320F28068FPNT qualifies as a direct substitute based on identical electrical and functional specifications. The primary distinction is the package format: the main part uses 80-HTQFP (12x12) with exposed pad, while the substitute uses 80-LQFP (12x12) without exposed pad. Both packages maintain the same pin count, pitch, and footprint compatibility for standard PCB layouts.

Parameter Comparison

Parameter	TMS320F28068FPFPQ	TMS320F28068FPNT	Compatibility
Manufacturer	Texas Instruments	Texas Instruments	Identical
Core Processor	C28x	C28x	Identical
Core Size	32-Bit Single-Core	32-Bit Single-Core	Identical
Speed	90MHz	90MHz	Identical
Program Memory	256KB (128K x 16) FLASH	256KB (128K x 16) FLASH	Identical
RAM Size	50K x 16	50K x 16	Identical
Voltage Supply	1.71V ~ 1.995V	1.71V ~ 1.995V	Identical
Data Converters	A/D 12x12b	A/D 12x12b	Identical
Number of I/O	40	40	Identical
Connectivity	CANbus, I2C, McBSP, SCI, SPI, UART/USART	CANbus, I2C, McBSP, SCI, SPI, UART/USART	Identical
Peripherals	Brown-out Detect/Reset, DMA, POR, PWM, WDT	Brown-out Detect/Reset, DMA, POR, PWM, WDT	Identical
Package Type	80-HTQFP (12x12)	80-LQFP (12x12)	Different package format
Operating Temperature	-40°C ~ 125°C (TA)	-40°C ~ 105°C (TA)	Main part supports extended range
Product Status	Obsolete	Active	Substitute is active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL Rating	3 (168 Hours)	3 (168 Hours)	Identical

Engineering Selection Recommendations

The TMS320F28068FPNT is the manufacturer-recommended substitute for the obsolete TMS320F28068FPFPQ. Both devices maintain identical electrical specifications, core architecture, memory configuration, and peripheral functionality. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

The primary consideration for selection is the package format difference. The TMS320F28068FPFPQ uses 80-HTQFP with exposed pad, while the TMS320F28068FPNT uses 80-LQFP without exposed pad. Both packages are 12x12mm with 80-pin configuration and maintain compatible pin assignments. PCB layout modifications may be required to accommodate the package transition, specifically regarding thermal management if the exposed pad was utilized in the original design.

The TMS320F28068FPFPQ supports an extended operating temperature range (-40°C to 125°C) compared to the substitute (-40°C to 105°C). Applications requiring operation above 105°C must retain the original part or identify alternative solutions.

Both parts maintain identical RoHS3 compliance and MSL ratings, ensuring regulatory and environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can TMS320F28068FPNT directly replace TMS320F28068FPFPQ in existing designs?

A: Electrical and functional replacement is direct. Package format differs (HTQFP vs. LQFP), requiring PCB layout evaluation. Pin assignments and electrical characteristics are identical.

Q: What is the difference between 80-HTQFP and 80-LQFP packages?

A: Both are 80-pin, 12x12mm packages with identical pitch and pin assignments. HTQFP includes an exposed thermal pad; LQFP does not. Thermal management strategy must be reassessed if the exposed pad was critical to the original design.

Q: Are there temperature range limitations with the substitute part?

A: The TMS320F28068FPNT operates from -40°C to 105°C, while the original part supports -40°C to 125°C. Applications requiring temperatures above 105°C cannot use the substitute without alternative solutions.

Q: Is the substitute part currently available?

A: Yes. The TMS320F28068FPNT is in active production status with current inventory availability, unlike the obsolete TMS320F28068FPFPQ.

Q: Do both parts have identical compliance certifications?

A: Yes. Both parts are ROHS3 compliant, AEC-Q100 qualified (where applicable), and carry identical MSL ratings of 3 (168 Hours).

Q: What are the key parameters that must match for substitution?

A: Core processor (C28x), core size (32-Bit Single-Core), speed (90MHz), program memory (256KB FLASH), RAM (50K x 16), supply voltage (1.71V ~ 1.995V), I/O count (40), connectivity suite, and peripheral features must all remain identical.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message