FS32K144MST0CLHT Equivalent & Substitute Parts

Part Overview

The FS32K144MST0CLHT is an ARM Cortex-M4F S32K microcontroller IC featuring 32-bit single-core architecture, 512KB FLASH memory, and 64-LQFP packaging. This part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The S32K series provides automotive-grade embedded processing with integrated connectivity options including CANbus, LINbus, SPI, I2C, and UART/USART interfaces.

Key Parameters

Parameter	FS32K144MST0CLHT
Manufacturer	NXP USA Inc.
Core Processor	ARM Cortex-M4F
Core Size	32-Bit Single-Core
Speed	64MHz
Program Memory	512KB FLASH (512K x 8)
EEPROM Size	4K x 8
RAM Size	64K x 8
I/O Count	58
Supply Voltage	2.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	64-LQFP (10x10)
Connectivity	CANbus, FlexIO, I2C, LINbus, SPI, UART/USART
Peripherals	POR, PWM, WDT
Data Converters	A/D 16x12b SAR; D/A 1x8b
Product Status	Obsolete
Moisture Sensitivity Level	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the FS32K144MST0CLHT is determined by the following critical parameters:

Core Architecture: ARM Cortex-M4F processor and 32-bit single-core configuration
Memory Configuration: 512KB FLASH, 4K x 8 EEPROM, 64K x 8 RAM
I/O Count: 58 I/O pins
Connectivity Suite: CANbus, FlexIO, I2C, LINbus, SPI, UART/USART
Peripheral Set: POR, PWM, WDT
Data Converters: A/D 16x12b SAR and D/A 1x8b
Package: 64-LQFP (10x10) form factor
Supply Voltage Range: 2.7V ~ 5.5V

Substitute parts must maintain identical or superior specifications across these parameters. Speed and operating temperature range variations are permitted when all other electrical and functional characteristics remain equivalent or enhanced.

Parameter Comparison

Parameter	FS32K144MST0CLHT (Main)	FS32K144HAT0MLHT (MFR Recommended)	FS32K144MNT0CLHT (Parametric Equivalent)
Manufacturer	NXP USA Inc.	NXP Semiconductors	NXP USA Inc.
Core Processor	ARM Cortex-M4F	ARM Cortex-M4F	ARM Cortex-M4F
Core Size	32-Bit Single-Core	32-Bit Single-Core	32-Bit Single-Core
Speed	64MHz	80MHz	64MHz
Program Memory	512KB FLASH	512KB FLASH	512KB FLASH
EEPROM Size	4K x 8	4K x 8	4K x 8
RAM Size	64K x 8	64K x 8	64K x 8
I/O Count	58	58	58
Supply Voltage	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C
Package Type	64-LQFP (10x10)	64-LQFP (10x10)	64-LQFP (10x10)
Connectivity	CANbus, FlexIO, I2C, LINbus, SPI, UART/USART	CANbus, FlexIO, I2C, LINbus, SPI, UART/USART	CANbus, FlexIO, I2C, LINbus, SPI, UART/USART
Peripherals	POR, PWM, WDT	POR, PWM, WDT	POR, PWM, WDT
Data Converters	A/D 16x12b SAR; D/A 1x8b	A/D 16x12b SAR; D/A 1x8b	A/D 16x12b SAR; D/A 1x8b
Product Status	Obsolete	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

FS32K144HAT0MLHT (MFR Recommended Substitute)

This part is the manufacturer-recommended substitute for the obsolete FS32K144MST0CLHT. It maintains all core electrical and functional parameters while offering enhanced operating temperature range (-40°C ~ 125°C versus -40°C ~ 85°C) and increased clock speed (80MHz versus 64MHz). The part carries Active product status and ROHS3 compliance certification, ensuring long-term availability and regulatory alignment. Packaging remains identical at 64-LQFP (10x10).

FS32K144MNT0CLHT (Parametric Equivalent)

This part provides direct parametric equivalence to the main part, maintaining identical speed (64MHz) and operating temperature range (-40°C ~ 85°C). It differs only in packaging format (Tray versus unspecified) and carries Active product status with ROHS3 compliance. This option is suitable for applications where the exact thermal and speed characteristics of the original part are required.

Both substitute parts are manufactured by NXP and maintain full compatibility with the S32K microcontroller ecosystem, including identical pin configuration, memory architecture, and peripheral integration.

Frequently Asked Questions (FAQ)

Q: Can FS32K144HAT0MLHT be used as a direct replacement for FS32K144MST0CLHT?

A: Yes. Both parts share identical core architecture, memory configuration, I/O count, connectivity options, and 64-LQFP package. The FS32K144HAT0MLHT offers enhanced specifications (80MHz speed and -40°C ~ 125°C operating range) while maintaining full backward compatibility.

Q: What is the difference between the two substitute parts?

A: FS32K144HAT0MLHT operates at 80MHz with extended temperature range (-40°C ~ 125°C), while FS32K144MNT0CLHT operates at 64MHz with standard temperature range (-40°C ~ 85°C). Both maintain identical memory, I/O, and connectivity specifications.

Q: Are the substitute parts pin-compatible with the original part?

A: Yes. All three parts use the 64-LQFP (10x10) package with 58 I/O pins in identical configuration.

Q: What is the significance of the Obsolete status for FS32K144MST0CLHT?

A: Obsolete status indicates the part is no longer manufactured or supported by NXP. Both substitute parts carry Active status, ensuring continued availability, technical support, and compliance with current regulatory standards.

Q: Do the substitute parts meet RoHS compliance?

A: Yes. Both FS32K144HAT0MLHT and FS32K144MNT0CLHT are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: Are there any differences in supply voltage or data converter specifications?

A: No. All three parts maintain identical supply voltage range (2.7V ~ 5.5V) and data converter configuration (A/D 16x12b SAR; D/A 1x8b).

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