Z8F021APB020SC Equivalent & Substitute Parts

Part Overview

The Z8F021APB020SC is an 8-bit microcontroller from Zilog's eZ8 Encore!® XP® series, featuring 2KB FLASH program memory, 512 bytes of RAM, and 64 bytes of EEPROM. This device integrates essential peripherals including PWM, watchdog timer, brown-out detection, and UART/USART connectivity in an 8-DIP through-hole package.

The Z8F021APB020SC carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support legacy system maintenance and production requirements.

Key Parameters

Parameter	Value
Core Processor	eZ8
Core Size	8-Bit
Speed	20MHz
Program Memory Size	2KB (2K x 8)
Program Memory Type	FLASH
RAM Size	512 x 8
EEPROM Size	64 x 8
Voltage Supply (Vcc/Vdd)	2.7V ~ 3.6V
Number of I/O	6
Mounting Type	Through Hole
Package / Case	8-DIP (0.300", 7.62mm)
Operating Temperature	0°C ~ 70°C (TA)
Connectivity	IrDA, UART/USART
Peripherals	Brown-out Detect/Reset, LED, LVD, POR, PWM, WDT

Substitute Part Grouping Explanation

Substitution eligibility for the Z8F021APB020SC is determined by strict equivalence across the following critical parameters:

Core Architecture: eZ8 processor family
Memory Configuration: 2KB FLASH, 512 bytes RAM, 64 bytes EEPROM
Performance: 20MHz clock speed
Electrical Specifications: 2.7V ~ 3.6V supply voltage range
Physical Form Factor: 8-DIP through-hole package (0.300", 7.62mm)
Peripheral Set: IrDA, UART/USART, PWM, WDT, brown-out detection, LVD, POR, LED support
I/O Count: 6 I/O pins

The Z8F021APB020SG meets all substitution criteria as a direct functional equivalent within the eZ8 Encore!® XP® series.

Parameter Comparison

Parameter	Z8F021APB020SC	Z8F021APB020SG	Match
Manufacturer	Zilog	Zilog	✓
Series	Encore!® XP®	Encore!® XP®	✓
Core Processor	eZ8	eZ8	✓
Core Size	8-Bit	8-Bit	✓
Speed	20MHz	20MHz	✓
Program Memory Size	2KB (2K x 8)	2KB (2K x 8)	✓
Program Memory Type	FLASH	FLASH	✓
EEPROM Size	64 x 8	64 x 8	✓
RAM Size	512 x 8	512 x 8	✓
Voltage - Supply (Vcc/Vdd)	2.7V ~ 3.6V	2.7V ~ 3.6V	✓
Number of I/O	6	6	✓
Connectivity	IrDA, UART/USART	IrDA, UART/USART	✓
Peripherals	Brown-out Detect/Reset, LED, LVD, POR, PWM, WDT	Brown-out Detect/Reset, LED, LVD, POR, PWM, WDT	✓
Mounting Type	Through Hole	Through Hole	✓
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	✓
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	✓
Product Status	Obsolete	Active	Substitute is Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Substitute offers improved compliance

Engineering Selection Recommendations

The Z8F021APB020SG is a direct functional substitute for the Z8F021APB020SC. Both devices share identical electrical specifications, memory configuration, peripheral set, and physical packaging.

The primary distinction is product lifecycle status: the Z8F021APB020SC is Obsolete, while the Z8F021APB020SG maintains Active status. Additionally, the Z8F021APB020SG achieves ROHS3 compliance, whereas the Z8F021APB020SC is RoHS non-compliant. For new designs or production continuity, the Z8F021APB020SG is the appropriate selection.

Both parts carry identical REACH Unaffected and EAR99 ECCN classifications. Moisture sensitivity level is 1 (Unlimited) for both variants.

Frequently Asked Questions (FAQ)

Q: Can Z8F021APB020SG directly replace Z8F021APB020SC in existing designs?

A: Yes. The Z8F021APB020SG is functionally identical to the Z8F021APB020SC across all electrical, memory, peripheral, and physical parameters. No design modifications are required for direct substitution.

Q: What is the difference between Z8F021APB020SC and Z8F021APB020SG?

A: The devices are electrically and functionally equivalent. The primary differences are: (1) Z8F021APB020SC is Obsolete; Z8F021APB020SG is Active; (2) Z8F021APB020SC is RoHS non-compliant; Z8F021APB020SG is ROHS3 compliant; (3) Z8F021APB020SC is supplied in standard packaging; Z8F021APB020SG is supplied in Tube packaging.

Q: Are the package dimensions identical?

A: Yes. Both parts use 8-DIP through-hole packaging with identical dimensions of 0.300" (7.62mm). PCB footprints and mounting requirements are identical.

Q: Do both parts support the same operating voltage range?

A: Yes. Both Z8F021APB020SC and Z8F021APB020SG operate within the 2.7V ~ 3.6V supply voltage range and share identical operating temperature specifications of 0°C ~ 70°C (TA).

Q: Is firmware compatibility maintained between these parts?

A: Yes. Both devices use the identical eZ8 core processor, memory architecture, and peripheral configuration. Firmware developed for either part is compatible with the other without modification.

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