Z8F021ASB020SC Equivalent & Substitute Parts

Part Overview

The Z8F021ASB020SC is an eZ8 Encore!® XP® 8-bit microcontroller manufactured by Zilog, featuring 2KB FLASH program memory, 512 bytes of RAM, and 64 bytes of EEPROM. 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 operates at 20MHz with an internal oscillator and supports a supply voltage range of 2.7V to 3.6V in an 8-SOIC surface mount package.

The Z8F021ASB020SC is classified as obsolete. Locating equivalent or substitute components becomes necessary when original stock is depleted or when design requirements favor active production status and current compliance certifications.

Substiute Parts

Z8F021ASB020SC

ZilogIn Stock: 972Z8F021ASB020SC Datasheet

Current PartRFQ

Z8F021ASB020SG

ZilogIn Stock: 1080Z8F021ASB020SG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Z8F021ASB020SC is determined by strict equivalence across the following critical parameters:

• Core processor architecture (eZ8)
• Core size (8-Bit)
• Operating frequency (20MHz)
• Program memory capacity and type (2KB FLASH)
• RAM and EEPROM capacity (512 x 8 and 64 x 8 respectively)
• Supply voltage range (2.7V ~ 3.6V)
• I/O pin count (6)
• Package type and dimensions (8-SOIC)
• Connectivity features (IrDA, UART/USART)
• Peripheral feature set (Brown-out Detect/Reset, LED, LVD, POR, PWM, WDT)
• Operating temperature range (0°C ~ 70°C)

The Z8F021ASB020SG meets all these criteria and qualifies as a direct substitute. The primary distinction between these parts is packaging format (tube versus unspecified) and product status (active versus obsolete).

Parameter Comparison

Engineering Selection Recommendations

The Z8F021ASB020SG is a direct functional equivalent to the Z8F021ASB020SC. Selection between these parts should be based on the following factors:

Product Status: The Z8F021ASB020SG carries active product status, ensuring continued availability and manufacturer support. The Z8F021ASB020SC is obsolete, limiting future procurement options.

Compliance Certifications: The Z8F021ASB020SG is ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components in many jurisdictions. The Z8F021ASB020SC is RoHS non-compliant, which may restrict its use in applications subject to RoHS directives.

Packaging: The Z8F021ASB020SG is supplied in tube packaging, which is standard for production environments. Both parts are electrically and mechanically identical in all functional parameters.

For new designs or applications requiring current compliance certifications, the Z8F021ASB020SG is the appropriate selection. For legacy system maintenance where the original part number must be preserved, the Z8F021ASB020SC remains functionally equivalent if available inventory permits.

Frequently Asked Questions (FAQ)

Q: Are the Z8F021ASB020SC and Z8F021ASB020SG pin-compatible?

A: Yes. Both devices use the 8-SOIC package with identical pin assignments, dimensions (0.154" × 3.90mm width), and electrical characteristics. Direct PCB substitution is possible without layout modifications.

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

A: The Z8F021ASB020SG is the active production variant with ROHS3 compliance and tube packaging. The Z8F021ASB020SC is the obsolete variant with RoHS non-compliant status. All functional parameters, memory configurations, operating frequencies, and peripheral features are identical.

Q: Can I use the Z8F021ASB020SG in applications originally designed for the Z8F021ASB020SC?

A: Yes. The Z8F021ASB020SG is a direct substitute. It provides identical electrical performance, memory capacity, I/O configuration, and peripheral functionality. The active product status and improved compliance profile make it the preferred choice for new procurement.

Q: Are there any firmware or software compatibility issues between these parts?

A: No. Both parts use the same eZ8 core processor architecture and instruction set. Firmware compiled for the Z8F021ASB020SC will execute identically on the Z8F021ASB020SG without modification.

Q: What is the significance of the RoHS compliance difference?

A: ROHS3 compliance indicates the Z8F021ASB020SG meets current restrictions on hazardous substances in electrical and electronic equipment. This certification is required for many applications in regulated markets. The Z8F021ASB020SC, being RoHS non-compliant, may not be acceptable for new designs or applications subject to RoHS directives.

Q: Is the tube packaging of the Z8F021ASB020SG suitable for automated assembly?

A: Yes. Tube packaging is standard for automated pick-and-place assembly processes. Both parts are suitable for surface mount assembly on standard production equipment.