S908AB32AH3CFUE Equivalent & Substitute Parts Reference

Part Overview

The S908AB32AH3CFUE is an 8-bit microcontroller from the HC08 series manufactured by NXP USA Inc. This Surface Mount device integrates 32KB FLASH program memory, 1KB RAM, and 512 bytes EEPROM in a 64-QFP package. The microcontroller operates at 8MHz with a supply voltage range of 4.5V to 5.5V and includes integrated peripherals such as SCI, SPI connectivity, PWM, and an 8-channel 8-bit analog-to-digital converter.

The S908AB32AH3CFUE is designated as "Not For New Designs" by the manufacturer. This status indicates the product line is mature and no longer receiving active development support. Finding equivalent or substitute parts becomes necessary for ongoing production support, maintenance applications, or when original inventory becomes unavailable.

Substiute Parts

S908AB32AH3CFUE

NXP USA Inc.In Stock: 936S908AB32AH3CFUE Datasheet

Current PartRFQ

S908AB32AH3CFUE

NXP SemiconductorsIn Stock: 858S908AB32AH3CFUE Datasheet

Parametric EquivalentRFQ

S908AB32AH3CFUE

NXP SemiconductorsIn Stock: 858S908AB32AH3CFUE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S908AB32AH3CFUE is determined by strict parametric matching across core functional and physical attributes. The following parameters must align for a part to qualify as an equivalent or substitute:

Critical Matching Parameters:

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• RAM Size: 1K x 8
• EEPROM Size: 512 x 8
• Voltage Supply Range: 4.5V ~ 5.5V
• Data Converters: A/D 8x8b
• Number of I/O: 51
• Package / Case: 64-QFP (14x14)
• Mounting Type: Surface Mount

Allowable Variations:

• Manufacturer identity (NXP USA Inc. vs. NXP Semiconductors)
• Connectivity options (SCI, SPI vs. I2C, SCI, SPI)
• Oscillator Type (Internal vs. External, Internal)
• Product Status (Not For New Designs vs. Obsolete)
• RoHS and REACH compliance certifications
• Inventory availability

Parameter Comparison

Engineering Selection Recommendations

The substitute S908AB32AH3CFUE from NXP Semiconductors matches all critical electrical and mechanical parameters required for functional equivalence. Both parts share identical core processor architecture, memory configuration, I/O count, and package specifications.

Compliance Considerations:

The main part (NXP USA Inc.) carries ROHS3 compliance and REACH Unaffected status, indicating full environmental regulatory alignment. The substitute part (NXP Semiconductors) is marked as RoHS non-compliant with Vendor Undefined REACH status. Applications subject to RoHS3 or REACH regulatory requirements must use the main part or identify alternative solutions outside this substitute group.

Connectivity Variation:

The substitute part includes I2C connectivity in addition to SCI and SPI, providing expanded interface options. This represents a superset of the main part's connectivity features and does not restrict compatibility in applications utilizing only SCI and SPI protocols.

Oscillator Configuration:

The substitute part supports both External and Internal oscillator types, compared to Internal-only operation in the main part. This expanded oscillator flexibility does not impact applications designed for internal oscillation.

Product Status:

Both parts are designated outside active development cycles. The main part status is "Not For New Designs" while the substitute is marked "Obsolete." For production applications requiring long-term component availability, neither part is recommended for new design initiation.

Frequently Asked Questions (FAQ)

Q: Can the S908AB32AH3CFUE substitute from NXP Semiconductors replace the original part from NXP USA Inc. in existing designs?

A: Yes, for applications without RoHS3 or REACH compliance requirements. All critical electrical parameters, memory specifications, I/O configuration, and package dimensions are identical. The substitute part's additional I2C connectivity and flexible oscillator options do not create incompatibility.

Q: What is the significance of the RoHS compliance difference between the main and substitute parts?

A: RoHS3 compliance restricts the use of hazardous substances in electrical and electronic equipment. The main part meets ROHS3 standards; the substitute does not. Applications subject to RoHS3 regulations (EU markets, certain industries) must use the main part or identify alternative solutions.

Q: Are there any pin-level differences between these parts?

A: No. Both parts use the 64-QFP (14x14) package with 51 I/O pins. Pin assignments, electrical characteristics, and functional behavior are identical.

Q: Why does the substitute part list I2C connectivity when the main part does not?

A: The substitute part integrates I2C protocol support as an additional communication interface. This does not affect designs using only SCI and SPI protocols. The expanded connectivity represents a functional superset.

Q: What does "Obsolete" product status mean for the substitute part?

A: Obsolete status indicates the manufacturer has discontinued active production and support. Existing inventory may be available through authorized distributors, but long-term availability is not guaranteed. Both the main part ("Not For New Designs") and substitute part ("Obsolete") are outside active development support.

Q: Can I use the substitute part if my application requires internal oscillation only?

A: Yes. The substitute part supports both internal and external oscillator configurations. Applications designed for internal oscillation operate identically on the substitute part.