Z8674312FSC Equivalent & Substitute Parts

Part Overview

The Z8674312FSC is an 8-bit microcontroller from Zilog's Z8® series, featuring 8KB OTP program memory, 236 x 8 bytes of RAM, and 32 I/O pins in a 44-LQFP surface mount package. This device operates at 12MHz with an internal oscillator and supports EBI/EMI connectivity with integrated Power-On Reset (POR) and Watchdog Timer (WDT) peripherals.

The Z8674312FSC is classified as obsolete. Identifying equivalent substitute parts is necessary for design continuity, system maintenance, and procurement of replacement units for existing applications.

Substiute Parts

Z8674312FSC

ZilogIn Stock: 679Z8674312FSC Datasheet

Current PartRFQ

Z8674312ASG

ZilogIn Stock: 1117Z8674312ASG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Z8674312FSC is determined by strict equivalence across the following critical parameters:

• Core Architecture: Z8 processor core (8-bit)
• Memory Configuration: 8KB OTP program memory, 236 x 8 RAM
• Clock Speed: 12MHz operation
• I/O Count: 32 pins
• Package: 44-LQFP (10x10) surface mount
• Voltage Range: 4.6V ~ 5.5V supply compatibility
• Peripherals: POR and WDT functionality
• Connectivity: EBI/EMI support

The Z8674312ASG meets all these criteria and qualifies as a direct functional equivalent. Substitution is valid when the replacement part maintains identical electrical specifications, memory organization, pin configuration, and operational characteristics.

Parameter Comparison

Engineering Selection Recommendations

The Z8674312ASG is the direct substitute for the Z8674312FSC. Both parts are functionally identical across all electrical and mechanical specifications. The primary distinction is product lifecycle status and regulatory compliance.

The Z8674312FSC is obsolete and non-compliant with RoHS3 standards. The Z8674312ASG is currently active in production and meets ROHS3 compliance requirements, making it the preferred selection for new designs and replacement applications requiring modern regulatory adherence.

Both parts share identical MSL ratings, REACH status, and export classifications. Packaging differs only in supplier format (FSC uses standard packaging; ASG uses tray packaging), which does not affect functional compatibility or electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the Z8674312ASG directly replace the Z8674312FSC in existing designs?

A: Yes. The Z8674312ASG is electrically and mechanically identical to the Z8674312FSC. All pin assignments, voltage specifications, memory organization, clock speed, and peripheral functionality are equivalent. Direct substitution is valid without circuit modification.

Q: What is the difference between the FSC and ASG part numbers?

A: The difference is limited to packaging format and product status. The FSC variant is obsolete; the ASG variant is active production. Both use identical die and core specifications. The ASG variant also carries ROHS3 compliance certification, whereas the FSC does not.

Q: Are there any compatibility concerns with the 44-LQFP package?

A: No. Both parts use the identical 44-LQFP (10x10) surface mount package with matching pin configurations, pitch, and mechanical dimensions. PCB footprints and assembly processes are interchangeable.

Q: Does the MSL rating differ between these parts?

A: No. Both the Z8674312FSC and Z8674312ASG carry an MSL rating of 3 (168 Hours), indicating identical moisture sensitivity and storage requirements.

Q: Which part should be selected for new designs?

A: The Z8674312ASG should be selected for new designs. It is in active production, meets current RoHS3 compliance standards, and ensures long-term availability and regulatory alignment.