Z8F021APJ020EC Equivalent & Substitute Parts

Part Overview

The Z8F021APJ020EC 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 operates at 20MHz with a supply voltage range of 2.7V to 3.6V and integrates peripherals including PWM, watchdog timer, brown-out detection, and UART/USART connectivity. The part is currently classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations.

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	25
Mounting Type	Through Hole
Package / Case	28-DIP (0.600", 15.24mm)
Operating Temperature	-40°C ~ 105°C (TA)
Connectivity	IrDA, UART/USART
Peripherals	Brown-out Detect/Reset, LED, LVD, POR, PWM, WDT

Substitute Part Grouping Explanation

Substitution of the Z8F021APJ020EC 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
Operating Frequency: 20MHz
Supply Voltage Range: 2.7V ~ 3.6V
I/O Count: 25 pins
Package Type: 28-DIP form factor
Peripheral Set: IrDA, UART/USART, PWM, WDT, brown-out detection, LVD, POR, LED support
Temperature Range: -40°C to 105°C

The Z8F021APJ020EG2156 meets all these criteria and is classified as a direct substitute. The primary distinction between the main part and its substitute is product status and compliance certification.

Parameter Comparison

Parameter	Z8F021APJ020EC	Z8F021APJ020EG2156
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
RAM Size	512 x 8	512 x 8
EEPROM Size	64 x 8	64 x 8
Voltage Supply (Vcc/Vdd)	2.7V ~ 3.6V	2.7V ~ 3.6V
Number of I/O	25	25
Mounting Type	Through Hole	Through Hole
Package / Case	28-DIP (0.600", 15.24mm)	28-DIP (0.600", 15.24mm)
Operating Temperature	-40°C ~ 105°C (TA)	-40°C ~ 105°C (TA)
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
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging	-	Tube

Engineering Selection Recommendations

The Z8F021APJ020EG2156 is the direct functional equivalent of the Z8F021APJ020EC. Selection between these parts should be based on the following factors:

For New Designs and Active Projects: The Z8F021APJ020EG2156 is the appropriate choice. This part carries Active product status, ensuring ongoing manufacturer support and availability. It meets ROHS3 compliance requirements, satisfying modern environmental and regulatory standards for electronic components.

For Legacy System Maintenance: The Z8F021APJ020EC remains available in inventory (1135 units) for applications requiring exact part matching with existing assemblies. However, the Z8F021APJ020EG2156 provides identical electrical and mechanical functionality with improved compliance posture.

Compliance Considerations: The Z8F021APJ020EG2156 is ROHS3 compliant, whereas the Z8F021APJ020EC is RoHS non-compliant. Both parts carry REACH Unaffected status and EAR99 ECCN classification. Moisture sensitivity level is identical at MSL 1 (Unlimited) for both variants.

Frequently Asked Questions (FAQ)

Q: Can Z8F021APJ020EG2156 replace Z8F021APJ020EC in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all functional parameters: core processor, memory configuration, operating frequency, supply voltage, I/O count, package type, and peripheral set. Pin-for-pin compatibility is guaranteed.

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

A: The primary differences are product status and compliance certification. Z8F021APJ020EG2156 is Active with ROHS3 compliance, while Z8F021APJ020EC is Obsolete and RoHS non-compliant. Packaging differs (Tube vs. unspecified), but electrical specifications are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the 28-DIP (0.600", 15.24mm) package with identical pinout and 25 I/O pins. Through-hole mounting is standard for both variants.

Q: Which part should be selected for new production?

A: Z8F021APJ020EG2156 is the recommended selection for new designs and ongoing production. Active product status ensures continued availability and manufacturer support. ROHS3 compliance aligns with current regulatory requirements.

Q: Is firmware compatibility maintained between these parts?

A: Yes. Identical core processor architecture (eZ8), memory configuration, and peripheral set ensure complete firmware compatibility. No code modifications are required when transitioning between these parts.

Q: What is the inventory status for each part?

A: Z8F021APJ020EC has 1135 units in stock. Z8F021APJ020EG2156 has 899 units in stock. Both are available as new original components.

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