Z8F081ASB020SC Equivalent & Substitute Parts

Part Overview

The Z8F081ASB020SC is an eZ8 Encore!® XP® 8-bit microcontroller manufactured by Zilog, featuring 8KB FLASH program memory, 1KB RAM, and a 20MHz core processor. This device integrates IrDA and UART/USART connectivity with peripheral functions including brown-out detection, LED control, low voltage detection, power-on reset, PWM, and watchdog timer capabilities. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs.

Substiute Parts

Z8F081ASB020SC

ZilogIn Stock: 956Z8F081ASB020SC Datasheet

Current PartRFQ

Z8F081ASB020EG

ZilogIn Stock: 1151Z8F081ASB020EG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Z8F081ASB020SC is determined by strict equivalence across the following critical parameters:

• Core processor architecture (eZ8)
• Core size (8-Bit)
• Program memory capacity (8KB FLASH)
• RAM capacity (1K x 8)
• Operating speed (20MHz)
• Supply voltage range (2.7V ~ 3.6V)
• Connectivity interfaces (IrDA, UART/USART)
• Peripheral feature set (Brown-out Detect/Reset, LED, LVD, POR, PWM, WDT)
• Package type (8-SOIC)
• I/O pin count (6)

The Z8F081ASB020EG meets all electrical and mechanical substitution criteria. Differences in product status, operating temperature range, packaging format, and compliance certifications do not affect functional interchangeability within the specified parameter constraints.

Parameter Comparison

Engineering Selection Recommendations

The Z8F081ASB020EG is the direct functional equivalent for Z8F081ASB020SC applications. Selection between these parts should be based on the following criteria:

For new designs and systems requiring current regulatory compliance, the Z8F081ASB020EG is the appropriate choice. This part maintains active product status with Zilog, carries ROHS3 compliance certification, and provides an extended operating temperature range of -40°C to 105°C compared to the original 0°C to 70°C specification. Both parts are REACH unaffected and carry identical ECCN and HTSUS classifications.

For legacy system maintenance where the original Z8F081ASB020SC is no longer available, the Z8F081ASB020EG provides pin-for-pin and functional compatibility with identical electrical characteristics, memory configuration, and peripheral integration. The extended temperature range of the substitute part does not introduce incompatibility in applications originally specified for the narrower 0°C to 70°C range.

Frequently Asked Questions (FAQ)

Q: Are Z8F081ASB020SC and Z8F081ASB020EG pin-compatible?

A: Yes. Both parts use the 8-SOIC package with identical pinout, 6 I/O pins, and electrical interface specifications. Direct socket substitution is possible without PCB modification.

Q: What is the difference between the two part numbers?

A: The primary differences are product status (obsolete vs. active), operating temperature range (0°C–70°C vs. -40°C–105°C), RoHS compliance status (non-compliant vs. ROHS3 compliant), and packaging format (unspecified vs. tube). All functional and electrical parameters are identical.

Q: Can Z8F081ASB020EG replace Z8F081ASB020SC in existing applications?

A: Yes. The substitute part meets all electrical and mechanical requirements for functional equivalence. The extended operating temperature range and improved compliance status present no compatibility issues for applications originally designed for the narrower temperature specification.

Q: Are there any firmware or software changes required when switching between these parts?

A: No. Both parts use the identical eZ8 core processor, instruction set, memory architecture, and peripheral configuration. Existing firmware and software require no modification.

Q: What is the significance of the different packaging formats?

A: Z8F081ASB020SC packaging is unspecified, while Z8F081ASB020EG is supplied in tube format. This affects handling and storage procedures but does not impact electrical performance or functionality.

Q: Why is Z8F081ASB020SC classified as obsolete?

A: Zilog has transitioned this product to end-of-life status. Z8F081ASB020EG represents the active equivalent within the Encore!® XP® series and is the recommended part for ongoing procurement and new designs.