DS80C320-FCG+ Equivalent & Substitute Parts

Part Overview

The DS80C320-FCG+ is an 8051-based 8-bit microcontroller manufactured by Analog Devices Inc./Maxim Integrated. This ROMless embedded processor operates at 25MHz with external oscillator support and is housed in a 44-MQFP surface mount package. The device features 32 I/O pins, 256 x 8 bytes of RAM, and integrated peripherals including Power-Fail Reset and Watchdog Timer functionality. With Active product status and ROHS3 compliance, this component remains suitable for legacy and new embedded system designs requiring 8051 architecture compatibility.

Identifying equivalent and substitute parts is necessary when addressing supply chain constraints, inventory optimization, or design flexibility requirements while maintaining functional and electrical compatibility.

Substiute Parts

DS80C320-FCG+

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

Current PartRFQ

DS80C320-FCG+

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Core processor architecture (8051), core size (8-bit), operating frequency (25MHz), program memory configuration (ROMless), RAM capacity (256 x 8), supply voltage range (4.5V ~ 5.5V), I/O pin count (32), connectivity interfaces (EBI/EMI, SIO, UART/USART), integrated peripherals (Power-Fail Reset, Watchdog Timer), package type (44-QFP), and mounting technology (Surface Mount).

Parts meeting all these specifications are classified as direct equivalents. Parts deviating in any parameter are not suitable substitutes and do not qualify for this reference.

Parameter Comparison

Engineering Selection Recommendations

The DS80C320-FCG+ maintains Active product status with full ROHS3 compliance and REACH unaffected classification, confirming regulatory suitability for current and future applications. The part number DS80C320-FCG+ represents the direct equivalent with identical electrical, mechanical, and environmental specifications. Selection of this part ensures continuity in embedded system designs requiring 8051 microcontroller functionality with ROMless architecture and 25MHz operation.

Frequently Asked Questions (FAQ)

Q: What defines a valid substitute for the DS80C320-FCG+? A: A valid substitute must match all specified parameters: 8051 core processor, 8-bit architecture, 25MHz speed, ROMless program memory, 256 x 8 RAM, 4.5V–5.5V supply voltage, 32 I/O pins, EBI/EMI and UART/USART connectivity, integrated Power-Fail Reset and Watchdog Timer, 44-QFP package, and surface mount technology.

Q: Can parts with different package types substitute for the DS80C320-FCG+? A: No. The 44-QFP package and surface mount technology are mandatory compatibility criteria. Deviations in package type or mounting method disqualify a part from substitution.

Q: Are there functional differences between the main part and its direct equivalent? A: No. The DS80C320-FCG+ direct equivalent maintains identical core processor architecture, memory configuration, peripheral set, and electrical specifications.

Q: What is the significance of the ROMless configuration? A: ROMless architecture requires external program memory interfacing via the EBI/EMI bus. Substitutes must support identical external memory connectivity to maintain system compatibility.

Q: Does operating temperature range affect substitution eligibility? A: Yes. The 0°C–70°C operating temperature range is a mandatory specification. Parts with different temperature ratings are not suitable substitutes.