DS80C320-QCL Equivalent & Substitute Parts

Part Overview

The DS80C320-QCL is an 8051-based 8-bit microcontroller IC manufactured by Analog Devices Inc./Maxim Integrated. This ROMless device operates at 33MHz with external oscillator support and integrates 256 x 8 bytes of RAM, 32 I/O pins, and standard peripherals including Power-Fail Reset and Watchdog Timer functionality. The part is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

DS80C320-QCL

Analog Devices Inc./Maxim IntegratedIn Stock: 2297DS80C320-QCL Datasheet

Current PartRFQ

DS80C320-QCL+

Analog Devices Inc./Maxim IntegratedIn Stock: 1566DS80C320-QCL+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS80C320-QCL is determined by strict equivalence across the following critical parameters:

• Core processor architecture (8051)
• Core size (8-Bit)
• Operating frequency (33MHz)
• Program memory configuration (ROMless)
• RAM capacity (256 x 8)
• I/O pin count (32)
• Supply voltage range (4.5V ~ 5.5V)
• Operating temperature range (0°C ~ 70°C)
• Package type and dimensions (44-PLCC, 16.59x16.59)
• Connectivity interfaces (EBI/EMI, SIO, UART/USART)
• Peripheral set (Power-Fail Reset, WDT)

The DS80C320-QCL+ meets all substitution criteria as a direct equivalent with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The DS80C320-QCL+ is a direct functional equivalent to the DS80C320-QCL. Both parts share identical electrical specifications, pin configurations, and operational characteristics. The primary distinction is product lifecycle status: the DS80C320-QCL is classified as Obsolete, while the DS80C320-QCL+ maintains Active status.

The DS80C320-QCL+ additionally provides ROHS3 compliance, whereas the original DS80C320-QCL is RoHS non-compliant. This compliance improvement may be relevant for applications subject to regulatory requirements or supply chain restrictions on non-compliant components.

Both parts carry identical Moisture Sensitivity Level (MSL 3, 168 Hours), ECCN, and HTSUS classifications, ensuring equivalent handling and regulatory treatment.

Frequently Asked Questions (FAQ)

Q: Can DS80C320-QCL+ be used as a direct replacement for DS80C320-QCL?

A: Yes. The DS80C320-QCL+ is electrically and mechanically identical to the DS80C320-QCL. Pin configuration, voltage requirements, operating frequency, memory configuration, I/O count, and peripheral functionality are equivalent. No circuit modifications are required.

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

A: The primary differences are product status and RoHS compliance. The DS80C320-QCL is Obsolete and RoHS non-compliant. The DS80C320-QCL+ is Active and ROHS3 compliant. All electrical and mechanical parameters are identical.

Q: Are there packaging differences between these parts?

A: Both parts use 44-PLCC packaging with identical dimensions (16.59x16.59mm). The DS80C320-QCL is supplied in standard packaging, while the DS80C320-QCL+ is supplied in Tube packaging. The physical component and pin layout remain unchanged.

Q: Does the RoHS3 compliance of DS80C320-QCL+ affect circuit design?

A: No. RoHS3 compliance is a manufacturing and material composition standard that does not alter electrical performance or circuit behavior. The component functions identically in existing designs.

Q: What is the significance of Active versus Obsolete product status?

A: Active status indicates ongoing manufacturing and availability. Obsolete status indicates the manufacturer has discontinued production. For new designs or long-term support, the Active DS80C320-QCL+ is the appropriate selection.