DS80C320-FCG Equivalent & Substitute Parts

Part Overview

The DS80C320-FCG is an 8051-based 8-bit microcontroller IC manufactured by Analog Devices Inc./Maxim Integrated. This ROMless device operates at 25MHz with 256 x 8 bytes of RAM and 32 I/O pins in a 44-MQFP surface mount package. The part is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure drop-in replacement capability.

Substiute Parts

DS80C320-FCG

Analog Devices Inc./Maxim IntegratedIn Stock: 1494DS80C320-FCG Datasheet

Current PartRFQ

DS80C320-FCG+

Analog Devices Inc./Maxim IntegratedIn Stock: 782DS80C320-FCG+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS80C320-FCG is determined by strict equivalence across the following critical parameters:

• Core Architecture: 8051 processor family
• Memory Configuration: ROMless architecture with 256 x 8 RAM
• Clock Speed: 25MHz operation
• I/O Count: 32 I/O pins
• Power Supply: 4.5V to 5.5V operating range
• Package Format: 44-QFP surface mount configuration
• Connectivity Interfaces: EBI/EMI, SIO, UART/USART support
• Integrated Peripherals: Power-Fail Reset and Watchdog Timer

The DS80C320-FCG+ qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility. The primary distinction is product status and packaging format, not functional capability.

Parameter Comparison

Engineering Selection Recommendations

The DS80C320-FCG+ is the direct functional equivalent of the DS80C320-FCG. Both devices share identical electrical and mechanical specifications, ensuring pin-for-pin compatibility and functional interchangeability in circuit applications.

The DS80C320-FCG+ is classified as an active product with ROHS3 compliance, whereas the DS80C320-FCG is obsolete and RoHS non-compliant. For new designs and long-term system support, the DS80C320-FCG+ is the appropriate selection. The DS80C320-FCG remains suitable only for legacy system maintenance where existing inventory is available and compliance requirements do not mandate RoHS adherence.

Both parts carry identical ECCN (3A991A2) and HTSUS (8542.31.0001) classifications, indicating equivalent export control and tariff treatment.

Frequently Asked Questions (FAQ)

Q: Can the DS80C320-FCG+ replace the DS80C320-FCG in existing designs?

A: Yes. The DS80C320-FCG+ is a direct substitute with identical electrical specifications, memory configuration, I/O count, and package format. No circuit modifications are required for substitution.

Q: What is the difference between the DS80C320-FCG and DS80C320-FCG+?

A: The primary differences are product status and regulatory compliance. The DS80C320-FCG is obsolete and RoHS non-compliant, while the DS80C320-FCG+ is an active product with ROHS3 compliance. Packaging format differs (tube versus tray), but electrical and mechanical specifications are identical.

Q: Why is the DS80C320-FCG classified as obsolete?

A: Obsolescence indicates the manufacturer has discontinued production. The DS80C320-FCG+ serves as the active replacement for ongoing supply and new applications.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist. Both devices are 44-QFP surface mount packages with identical pin assignments, voltage requirements, and functional capabilities. Direct PCB substitution is possible without design changes.

Q: Does RoHS compliance affect functional performance?

A: RoHS compliance relates to material composition and environmental standards, not functional performance. Both the RoHS non-compliant DS80C320-FCG and ROHS3-compliant DS80C320-FCG+ operate identically within specified electrical parameters.