TMS320F28068MPFPQ Equivalent & Substitute Parts

Part Overview

The TMS320F28068MPFPQ is a C28x C2000™ C28x Piccolo™ Microcontroller IC featuring 32-bit single-core architecture operating at 90MHz with 256KB FLASH memory. This device is classified as Obsolete, necessitating identification of active equivalent parts for new designs and production continuity. The part is qualified to AEC-Q100 automotive standards and complies with ROHS3 and REACH 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)
Mounting Type	Surface Mount
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 TMS320F28068MPFPQ is determined by equivalence in 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)
Peripheral set (CANbus, I2C, McBSP, SCI, SPI, UART/USART)
I/O count (40 pins)
Data converter specifications (A/D 12x12b)

The TMS320F28068MPNT qualifies as a direct substitute based on identical electrical specifications and functional capability. The primary difference is packaging format and product status transition from obsolete to active.

Parameter Comparison

Parameter	TMS320F28068MPFPQ	TMS320F28068MPNT	Match
Core Processor	C28x	C28x	✓
Core Size	32-Bit Single-Core	32-Bit Single-Core	✓
Speed	90MHz	90MHz	✓
Program Memory Size	256KB (128K x 16)	256KB (128K x 16)	✓
Program Memory Type	FLASH	FLASH	✓
RAM Size	50K x 16	50K x 16	✓
Voltage Supply (Vcc/Vdd)	1.71V ~ 1.995V	1.71V ~ 1.995V	✓
Data Converters	A/D 12x12b	A/D 12x12b	✓
Number of I/O	40	40	✓
Connectivity	CANbus, I2C, McBSP, SCI, SPI, UART/USART	CANbus, I2C, McBSP, SCI, SPI, UART/USART	✓
Peripherals	Brown-out Detect/Reset, DMA, POR, PWM, WDT	Brown-out Detect/Reset, DMA, POR, PWM, WDT	✓
Package Type	80-HTQFP (12x12)	80-LQFP (12x12)	Different
Mounting Type	Surface Mount	Surface Mount	✓
Operating Temperature	-40°C ~ 125°C (TA)	-40°C ~ 105°C (TA)	Partial
Grade	Automotive	Not specified	Different
Product Status	Obsolete	Active	Different
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
MSL Rating	3 (168 Hours)	3 (168 Hours)	✓

Engineering Selection Recommendations

The TMS320F28068MPNT is the manufacturer-recommended substitute for the obsolete TMS320F28068MPFPQ. Both devices share identical electrical specifications, memory configuration, and peripheral functionality, ensuring functional compatibility at the circuit level.

Selection considerations based on provided specifications:

The TMS320F28068MPNT is in active production status, ensuring long-term availability and supply chain continuity.
Both parts comply with ROHS3 and REACH requirements with identical MSL ratings.
Package format differs: HTQFP versus LQFP. PCB layout and footprint modifications are required for the substitute.
Operating temperature range differs: the substitute supports -40°C to 105°C versus -40°C to 125°C for the original. Applications requiring operation above 105°C require evaluation against the substitute's thermal specifications.
Automotive grade qualification is specified for the original part only. Applications requiring AEC-Q100 certification must confirm qualification status of the substitute through Texas Instruments documentation.

Frequently Asked Questions (FAQ)

Q: Can TMS320F28068MPNT directly replace TMS320F28068MPFPQ in existing designs?

A: Electrical and functional replacement is direct. PCB layout modification is required due to package format change from 80-HTQFP to 80-LQFP. Both packages are 12x12mm with 80 pins, but pin pitch and footprint geometry differ.

Q: What is the difference between HTQFP and LQFP packaging?

A: HTQFP (Heat Transfer Quad Flat Pack) includes an exposed thermal pad for enhanced heat dissipation. LQFP (Low-profile Quad Flat Pack) is a standard quad flat pack without exposed pad. Thermal performance characteristics differ; thermal analysis is required for applications with high power dissipation.

Q: Are there temperature range limitations with the substitute?

A: The substitute operates from -40°C to 105°C, compared to -40°C to 125°C for the original. Applications requiring operation above 105°C must be re-evaluated or alternative parts must be sourced.

Q: Is the substitute qualified to AEC-Q100?

A: AEC-Q100 qualification is specified for the original TMS320F28068MPFPQ. Qualification status of the TMS320F28068MPNT must be confirmed through Texas Instruments technical documentation for automotive applications.

Q: What is the inventory status of both parts?

A: TMS320F28068MPFPQ: 833 pieces in stock (obsolete status). TMS320F28068MPNT: 1005 pieces in stock (active status). The substitute offers superior supply availability.

Q: Are firmware or software modifications required?

A: No firmware modifications are required. Both devices share identical core processor architecture, memory configuration, and peripheral interfaces. Existing firmware is compatible without modification.

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