PCF51JF128VHS Equivalent & Substitute Parts

Part Overview

The PCF51JF128VHS is a 32-bit single-core Coldfire V1 microcontroller manufactured by NXP USA Inc., featuring 128KB FLASH memory, 32KB RAM, and 50MHz operation. This device integrates comprehensive connectivity options including EBI/EMI, I2C, SPI, UART/USART, and USB OTG interfaces, with 31 I/O pins and integrated data conversion capabilities (9x12-bit A/D, 1x12-bit D/A).

The PCF51JF128VHS carries an Obsolete product status. Identifying equivalent substitute parts is essential for ongoing system support, design continuity, and procurement planning when original inventory becomes unavailable.

Key Parameters

Parameter	Value
Core Processor	Coldfire V1
Core Size	32-Bit Single-Core
Speed	50MHz
Program Memory Size	128KB (128K x 8)
Program Memory Type	FLASH
RAM Size	32K x 8
Voltage Supply (Vcc/Vdd)	1.71V ~ 3.6V
Number of I/O	31
Data Converters	A/D 9x12b; D/A 1x12b
Connectivity	EBI/EMI, I2C, SPI, UART/USART, USB OTG
Peripherals	DMA, I2S, LVD, POR, PWM
Operating Temperature	-40°C ~ 105°C (TA)
Package / Case	44-VFLGA Exposed Pad
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the PCF51JF128VHS is determined by strict equivalence across the following critical parameters:

Core processor architecture (Coldfire V1)
Core configuration (32-Bit Single-Core)
Operating frequency (50MHz)
Memory configuration (128KB FLASH, 32KB RAM)
I/O pin count (31)
Data converter specifications (A/D 9x12b; D/A 1x12b)
Connectivity interfaces (EBI/EMI, I2C, SPI, UART/USART, USB OTG)
Package type (44-VFLGA Exposed Pad)
Voltage supply range (1.71V ~ 3.6V)
Operating temperature range (-40°C ~ 105°C)
Compliance certifications (ROHS3, REACH Unaffected)

The MCF51JF128VHS qualifies as a direct substitute based on complete parameter alignment across all electrical and mechanical specifications.

Parameter Comparison

Parameter	PCF51JF128VHS (Main)	MCF51JF128VHS (Substitute)	Match Status
Manufacturer	NXP USA Inc.	NXP USA Inc.	Identical
Core Processor	Coldfire V1	Coldfire V1	Identical
Core Size	32-Bit Single-Core	32-Bit Single-Core	Identical
Speed	50MHz	50MHz	Identical
Program Memory Size	128KB (128K x 8)	128KB (128K x 8)	Identical
Program Memory Type	FLASH	FLASH	Identical
RAM Size	32K x 8	32K x 8	Identical
Voltage Supply (Vcc/Vdd)	1.71V ~ 3.6V	1.71V ~ 3.6V	Identical
Number of I/O	31	31	Identical
Data Converters	A/D 9x12b; D/A 1x12b	A/D 9x12b; D/A 1x12b	Identical
Connectivity	EBI/EMI, I2C, SPI, UART/USART, USB OTG	EBI/EMI, I2C, SPI, UART/USART, USB OTG	Identical
Operating Temperature	-40°C ~ 105°C (TA)	-40°C ~ 105°C (TA)	Identical
Package / Case	44-VFLGA Exposed Pad	44-VFLGA Exposed Pad	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL Rating	3 (168 Hours)	3 (168 Hours)	Identical
Product Status	Obsolete	Active	Substitute is Active
Oscillator Type	Internal	External	Differs
Peripherals	DMA, I2S, LVD, POR, PWM	DMA, I2S, LVD, POR, PWM, WDT	Substitute includes WDT

Engineering Selection Recommendations

The MCF51JF128VHS is a direct functional equivalent to the PCF51JF128VHS. Both devices share identical electrical specifications, memory configuration, I/O architecture, and package form factor. The substitute part maintains full ROHS3 compliance and REACH unaffected status, meeting the same regulatory requirements as the original part.

The primary distinction is product lifecycle status: the PCF51JF128VHS is classified as Obsolete, while the MCF51JF128VHS maintains Active status with confirmed inventory availability. This status difference makes the MCF51JF128VHS the appropriate selection for new designs and ongoing production support.

Secondary differences include oscillator configuration (Internal vs. External) and peripheral integration (WDT addition in the substitute). These variations do not affect functional equivalence for applications designed around the original part specifications.

Frequently Asked Questions (FAQ)

Q: Can MCF51JF128VHS be used as a direct replacement for PCF51JF128VHS in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all critical parameters: core processor, memory configuration, I/O count, voltage supply range, operating temperature, and package type. The MCF51JF128VHS is pin-compatible and functionally equivalent.

Q: What is the significance of the Obsolete status on the PCF51JF128VHS?

A: Obsolete status indicates the part is no longer manufactured or supported by NXP USA Inc. The MCF51JF128VHS, with Active status, represents the current production equivalent and is the recommended selection for procurement and design continuity.

Q: Are there differences in oscillator configuration between these parts?

A: Yes. The PCF51JF128VHS features an Internal oscillator, while the MCF51JF128VHS uses an External oscillator. This difference does not affect functional equivalence if your application design accommodates external oscillator requirements.

Q: Does the MCF51JF128VHS include additional peripherals?

A: The MCF51JF128VHS includes a Watchdog Timer (WDT) peripheral not listed in the PCF51JF128VHS specification. This addition does not compromise compatibility and provides enhanced system monitoring capability.

Q: Are both parts compliant with environmental and regulatory standards?

A: Yes. Both the PCF51JF128VHS and MCF51JF128VHS are ROHS3 compliant and REACH unaffected. Both carry MSL rating 3 (168 Hours), meeting identical moisture sensitivity requirements.

Q: What is the package compatibility between these parts?

A: Both parts use the 44-VFLGA Exposed Pad package with identical 5x5mm form factor and surface mount configuration. PCB layouts and footprints are directly compatible.

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