Z8F012ASB020SC Equivalent & Substitute Parts

Part Overview

The Z8F012ASB020SC is an eZ8 Encore!® XP® 8-bit microcontroller manufactured by Zilog, featuring 1KB FLASH program memory, 256 bytes of RAM, and integrated peripherals including UART/USART connectivity, PWM, and analog-to-digital conversion. The device operates at 20MHz with a supply voltage range of 2.7V to 3.6V and is housed in an 8-SOIC surface mount package.

This part is currently listed as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or maintenance requirements for systems utilizing this microcontroller.

Key Parameters

Parameter	Value
Manufacturer	Zilog
Series	Encore!® XP®
Core Processor	eZ8
Core Size	8-Bit
Speed	20MHz
Program Memory Size	1KB (1K x 8)
Program Memory Type	FLASH
RAM Size	256 x 8
EEPROM Size	16 x 8
Voltage Supply (Vcc/Vdd)	2.7V ~ 3.6V
Number of I/O	6
Data Converters	A/D 4x10b
Connectivity	IrDA, UART/USART
Peripherals	Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Operating Temperature	0°C ~ 70°C (TA)

Substitute Part Grouping Explanation

Substitution eligibility for the Z8F012ASB020SC is determined by strict equivalence across the following critical parameters:

Base product number (Z8F012)
Core processor architecture (eZ8)
Core size (8-Bit)
Operating frequency (20MHz)
Program memory capacity and type (1KB FLASH)
RAM and EEPROM sizes (256 x 8 and 16 x 8 respectively)
Supply voltage range (2.7V ~ 3.6V)
I/O count (6 pins)
Peripheral feature set (Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT)
Data converter specification (A/D 4x10b)
Connectivity options (IrDA, UART/USART)
Package type and dimensions (8-SOIC)
Operating temperature range (0°C ~ 70°C)

The Z8F012ASB020SG meets all substitution criteria and is classified as a direct equivalent part.

Parameter Comparison

Parameter	Z8F012ASB020SC (Main)	Z8F012ASB020SG (Substitute)
Manufacturer	Zilog	Zilog
Series	Encore!® XP®	Encore!® XP®
Core Processor	eZ8	eZ8
Core Size	8-Bit	8-Bit
Speed	20MHz	20MHz
Program Memory Size	1KB (1K x 8)	1KB (1K x 8)
Program Memory Type	FLASH	FLASH
RAM Size	256 x 8	256 x 8
EEPROM Size	16 x 8	16 x 8
Voltage Supply (Vcc/Vdd)	2.7V ~ 3.6V	2.7V ~ 3.6V
Number of I/O	6	6
Data Converters	A/D 4x10b	A/D 4x10b
Connectivity	IrDA, UART/USART	IrDA, UART/USART
Peripherals	Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT	Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
Mounting Type	Surface Mount	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging	Not specified	Tube

Engineering Selection Recommendations

The Z8F012ASB020SG is a direct functional equivalent to the Z8F012ASB020SC. Both parts share identical electrical specifications, memory configurations, peripheral sets, and package geometry.

The primary distinction between these parts is product status and regulatory compliance. The Z8F012ASB020SC is obsolete, while the Z8F012ASB020SG maintains active product status. The Z8F012ASB020SG achieves ROHS3 compliance, whereas the Z8F012ASB020SC is RoHS non-compliant. For new designs or systems requiring regulatory compliance with current environmental standards, the Z8F012ASB020SG is the appropriate selection. For legacy system maintenance where the original part specification must be preserved, the Z8F012ASB020SC remains functionally interchangeable where inventory permits.

Frequently Asked Questions (FAQ)

Q: Can Z8F012ASB020SG replace Z8F012ASB020SC in existing designs?

A: Yes. Both parts are electrically and mechanically identical. They share the same core processor, memory configuration, peripheral set, operating frequency, supply voltage range, I/O count, and 8-SOIC package dimensions. Direct substitution is supported at the component level.

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

A: The Z8F012ASB020SG differs from the Z8F012ASB020SC in product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant). The Z8F012ASB020SG is supplied in tube packaging, while packaging information for the Z8F012ASB020SC is not specified. All functional and electrical parameters are identical.

Q: Are there any compatibility concerns with the 8-SOIC package?

A: No. Both parts use the identical 8-SOIC package with 0.154" (3.90mm) width. PCB footprints, solder reflow profiles, and handling procedures are fully compatible.

Q: Which part should be selected for new production?

A: The Z8F012ASB020SG should be selected for new production. It maintains active product status and meets current RoHS3 environmental compliance requirements. The Z8F012ASB020SC is obsolete and should be reserved for legacy system maintenance only.

Q: Are firmware or software modifications required when switching between these parts?

A: No. Both parts implement the identical eZ8 core processor architecture and peripheral feature set. Existing firmware compiled for the Z8F012ASB020SC will execute without modification on the Z8F012ASB020SG.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message