DS80C320-ECL Equivalent & Substitute Parts

Part Overview

The DS80C320-ECL is an 8051-based 8-bit microcontroller IC manufactured by Analog Devices Inc./Maxim Integrated, operating at 33MHz with ROMless architecture in a 44-TQFP surface mount package. This part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. Substitute parts maintain core architectural compatibility while offering variations in operating frequency and product status.

Substiute Parts

DS80C320-ECL

Analog Devices Inc./Maxim IntegratedIn Stock: 20312DS80C320-ECL Datasheet

Current PartRFQ

DS80C320-ECG+

Analog Devices Inc./Maxim IntegratedIn Stock: 1372DS80C320-ECG+ Datasheet

MFR RecommendedRFQ

DS80C320-ECL+

Analog Devices Inc./Maxim IntegratedIn Stock: 1235DS80C320-ECL+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS80C320-ECL is determined by strict alignment across the following critical parameters:

Core Architecture Requirements:

• Processor: 8051 core
• Core Size: 8-Bit
• Program Memory Type: ROMless
• RAM Size: 256 x 8 bytes
• Package: 44-TQFP (10x10)
• Voltage Supply: 4.5V ~ 5.5V
• Connectivity: EBI/EMI, SIO, UART/USART
• Peripherals: Power-Fail Reset, WDT
• Operating Temperature: 0°C ~ 70°C

Variable Parameters Allowing Substitution:

• Operating Speed: 25MHz or 33MHz
• Product Status: Active or Obsolete
• RoHS Compliance: RoHS3 Compliant or RoHS non-compliant
• Packaging Format: Tray or bulk

The DS80C320-ECL can be substituted with DS80C320-ECG+ (25MHz variant) or DS80C320-ECL+ (33MHz variant, active status). Both maintain identical core functionality and pinout compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Frequency-Matched Replacement: DS80C320-ECL+ is the primary substitute, offering identical 33MHz operating speed with active product status and ROHS3 compliance. This part eliminates obsolescence risk while maintaining full functional and electrical equivalence.

For Reduced-Speed Applications: DS80C320-ECG+ operates at 25MHz and is suitable for applications where maximum clock frequency is not a design constraint. This variant provides active product status and ROHS3 compliance, making it viable for legacy system support where timing margins permit lower clock rates.

Compliance Considerations: Both substitute parts carry ROHS3 compliance certification, addressing regulatory requirements absent in the obsolete DS80C320-ECL. Selection between DS80C320-ECG+ and DS80C320-ECL+ depends solely on application timing requirements and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can DS80C320-ECG+ (25MHz) replace DS80C320-ECL (33MHz) in existing designs? A: Substitution is possible only if the application timing budget accommodates 25MHz operation. The 8MHz frequency reduction may impact real-time performance, interrupt latency, or external communication protocols. System-level timing analysis is required before implementation.

Q: Are the pinouts identical across all three parts? A: Yes. DS80C320-ECL, DS80C320-ECG+, and DS80C320-ECL+ share identical 44-TQFP (10x10) pinouts and electrical interfaces. No PCB redesign is required for substitution.

Q: What is the significance of the "+" suffix in DS80C320-ECL+ and DS80C320-ECG+? A: The "+" suffix indicates packaging in Tray format with active product status and ROHS3 compliance, distinguishing these parts from the obsolete DS80C320-ECL variant.

Q: Are there any voltage or temperature rating differences? A: No. All three parts operate within identical voltage supply ranges (4.5V ~ 5.5V) and temperature ranges (0°C ~ 70°C TA). Electrical operating conditions are fully compatible.

Q: Which substitute should be selected for new designs? A: DS80C320-ECL+ is recommended for new designs, providing 33MHz performance with active product status, ROHS3 compliance, and long-term supply availability.