FS32K144UST0VLHT Equivalent & Substitute Parts

Part Overview

The FS32K144UST0VLHT is an ARM Cortex-M4F S32K microcontroller IC manufactured by NXP USA Inc. This 32-bit single-core device operates at 112MHz with 512KB FLASH memory and is housed in a 64-LQFP (10x10) surface mount package. The main part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. Substitute parts within the S32K144 family maintain identical core functionality and electrical specifications while differing in packaging configuration and product status.

Key Parameters

Parameter	Value
Manufacturer	NXP USA Inc.
Series	S32K
Core Processor	ARM Cortex-M4F
Core Size	32-Bit Single-Core
Speed	112MHz
Program Memory Size	512KB (512K x 8) FLASH
EEPROM Size	4K x 8
RAM Size	64K x 8
Number of I/O	58
Voltage Supply (Vcc/Vdd)	2.7V ~ 5.5V
Data Converters	A/D 16x12b SAR; D/A 1x8b
Connectivity	CANbus, FlexIO, I2C, LINbus, SPI, UART/USART
Peripherals	POR, PWM, WDT
Operating Temperature	-40°C ~ 105°C (TA)
Package / Case	64-LQFP (10x10)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the FS32K144UST0VLHT are determined by strict equivalence across the following critical parameters:

Core Electrical Equivalence: All substitute parts maintain identical processor architecture (ARM Cortex-M4F), clock speed (112MHz), memory configuration (512KB FLASH, 64KB RAM, 4KB EEPROM), I/O count (58), voltage supply range (2.7V ~ 5.5V), data converter specifications (A/D 16x12b SAR, D/A 1x8b), connectivity options (CANbus, FlexIO, I2C, LINbus, SPI, UART/USART), and peripheral set (POR, PWM, WDT).

Package Compatibility: All substitute parts use the identical 64-LQFP (10x10) surface mount package, ensuring PCB footprint and pinout compatibility.

Temperature Range: All parts operate across the same temperature range (-40°C ~ 105°C), maintaining thermal specifications for equivalent application environments.

Compliance Standards: All parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence.

Differentiating Factors: Substitutes differ in product status (active vs. obsolete), packaging configuration (tray vs. unspecified), and moisture sensitivity level (MSL 1 vs. MSL 3), which do not affect electrical or mechanical compatibility but impact supply chain availability and handling requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Packaging	MSL	Inventory (Pcs)	Core Processor	Speed (MHz)	FLASH (KB)	RAM (KB)	Package	RoHS
FS32K144UST0VLHT	NXP USA Inc.	Obsolete	-	1	1009	ARM Cortex-M4F	112	512	64	64-LQFP	ROHS3
FS32K144UAT0VLHR	NXP USA Inc.	Active	Tray	3	1030	ARM Cortex-M4F	112	512	64	64-LQFP	ROHS3
FS32K144UAT0VLHT	NXP USA Inc.	Active	-	3	16860	ARM Cortex-M4F	112	512	64	64-LQFP	ROHS3
FS32K144UFT0VLHT	NXP USA Inc.	Active	Tray	3	811	ARM Cortex-M4F	112	512	64	64-LQFP	ROHS3
FS32K144UIT0VLHT	NXP USA Inc.	Active	Tray	3	1552	ARM Cortex-M4F	112	512	64	64-LQFP	ROHS3
FS32K144ULT0VLHT	NXP USA Inc.	Active	Tray	3	1215	ARM Cortex-M4F	112	512	64	64-LQFP	ROHS3
FS32K144URT0VLHT	NXP USA Inc.	Active	-	3	1542	ARM Cortex-M4F	112	512	64	64-LQFP	ROHS3

Engineering Selection Recommendations

Primary Recommendation: FS32K144UAT0VLHT is the preferred substitute for the obsolete FS32K144UST0VLHT. This part maintains active product status with the highest inventory availability (16,860 units), ensuring long-term supply continuity. It provides identical electrical and mechanical specifications with MSL 3 moisture sensitivity rating suitable for standard handling and storage protocols.

Secondary Recommendations: FS32K144URT0VLHT and FS32K144ULT0VLHT are alternative active substitutes with adequate inventory levels (1,542 and 1,215 units respectively) and equivalent electrical performance. Both maintain the same 64-LQFP package footprint and operating specifications.

Supply Chain Consideration: All substitute parts carry active product status from NXP USA Inc., ensuring ongoing manufacturing support and availability. The obsolete status of the original FS32K144UST0VLHT necessitates transition to one of the active alternatives for new production and long-term design support.

Compliance Assurance: All substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and distribution.

Frequently Asked Questions (FAQ)

Q: Are all substitute parts electrically identical to the FS32K144UST0VLHT?

A: Yes. All substitute parts maintain identical core processor architecture (ARM Cortex-M4F), clock frequency (112MHz), memory configuration (512KB FLASH, 64KB RAM, 4KB EEPROM), I/O count (58), voltage supply range (2.7V ~ 5.5V), data converter specifications, connectivity options, and peripheral set. They are direct functional equivalents.

Q: Will substitute parts fit the same PCB footprint?

A: Yes. All substitute parts use the 64-LQFP (10x10) surface mount package with identical pinout and mechanical dimensions. No PCB redesign is required.

Q: What is the difference between MSL 1 and MSL 3 ratings?

A: MSL (Moisture Sensitivity Level) indicates moisture absorption limits during storage and handling. MSL 1 allows unlimited shelf life, while MSL 3 requires reflow within 168 hours of package opening. For standard manufacturing environments with proper moisture control, MSL 3 parts present no compatibility issues.

Q: Why is the original part listed as obsolete?

A: Product obsolescence reflects NXP's lifecycle management. Active substitute parts within the S32K144 family provide equivalent functionality with ongoing manufacturing support and supply availability.

Q: Can I use parts with different packaging configurations (tray vs. unspecified)?

A: Yes. Packaging configuration affects only handling, storage, and supply chain logistics. It does not impact electrical performance or PCB compatibility. Component functionality remains identical regardless of packaging type.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory standards for electronic components.

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