Z8F042APH020SC Equivalent & Substitute Parts

Part Overview

The Z8F042APH020SC is an eZ8 Encore!® XP® 8-bit microcontroller manufactured by Zilog, featuring 4KB FLASH program memory, 1KB RAM, and 128 bytes EEPROM. This device integrates 17 I/O pins, operates at 20MHz, and includes integrated peripherals such as PWM, temperature sensor, watchdog timer, and brown-out detection. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Substiute Parts

Z8F042APH020SC

ZilogIn Stock: 737Z8F042APH020SC Datasheet

Current PartRFQ

Z8F042APH020SG2156

ZilogIn Stock: 1067Z8F042APH020SG2156 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Z8F042APH020SC is determined by strict equivalence across the following critical parameters:

• Processor Architecture: eZ8 core processor
• Memory Configuration: 4KB FLASH, 1KB RAM, 128 bytes EEPROM
• Performance: 20MHz clock speed
• I/O Count: 17 I/O pins
• Voltage Range: 2.7V ~ 3.6V supply
• Package: 20-DIP (0.300", 7.62mm) form factor
• Peripheral Set: Identical feature set including PWM, temperature sensor, watchdog timer, and communication interfaces

The Z8F042APH020SG2156 meets all substitution criteria as a direct equivalent, with identical electrical and functional specifications. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The Z8F042APH020SG2156 is the direct substitute for the obsolete Z8F042APH020SC. Both parts share identical electrical specifications, memory configuration, and peripheral functionality. Selection between these parts is determined by regulatory and compliance requirements:

• Z8F042APH020SC: Suitable for legacy system maintenance where RoHS compliance is not mandated and existing inventory is available.
• Z8F042APH020SG2156: Recommended for new designs and systems requiring ROHS3 compliance. This part maintains active product status with Zilog, ensuring continued availability and technical support.

The transition from the obsolete variant to the active substitute presents no functional or electrical incompatibility. Pin configuration, memory organization, and peripheral behavior remain identical across both part numbers.

Frequently Asked Questions (FAQ)

Q: Are Z8F042APH020SC and Z8F042APH020SG2156 pin-compatible?

A: Yes. Both parts use the 20-DIP (0.300", 7.62mm) package with identical pin assignments. Direct socket substitution is possible without PCB modification.

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

A: The Z8F042APH020SG2156 is the active production variant with ROHS3 compliance, while the Z8F042APH020SC is classified as obsolete. Electrical and functional specifications are identical.

Q: Can firmware developed for Z8F042APH020SC run on Z8F042APH020SG2156?

A: Yes. Both parts implement the same eZ8 processor architecture, memory organization, and peripheral set. Firmware compatibility is maintained without modification.

Q: Does the packaging format differ between these parts?

A: The Z8F042APH020SC is supplied in standard packaging, while Z8F042APH020SG2156 is supplied in tube packaging. Both use the same 20-DIP form factor.

Q: Are there voltage or temperature rating differences?

A: No. Both parts operate within 2.7V to 3.6V supply range and 0°C to 70°C operating temperature specifications.

Q: Which part should be selected for new designs?

A: Z8F042APH020SG2156 is recommended for new designs due to active product status and ROHS3 compliance certification.