TS80C32X2-VCB Equivalent & Substitute Parts

Part Overview

The TS80C32X2-VCB is an 8-bit ROMless microcontroller from Microchip Technology based on the 80C51 core architecture. Designed for embedded applications requiring external program memory, this device operates at 60/30MHz with 32 I/O pins and integrates UART/USART connectivity with Power-On Reset functionality. The product is currently obsolete, making identification of compatible substitute components essential for system redesign, legacy system maintenance, and production continuity.

Substiute Parts

TS80C32X2-VCB

Microchip TechnologyIn Stock: 708TS80C32X2-VCB Datasheet

Current PartRFQ

AT89C51RC2-SLSUM

Microchip TechnologyIn Stock: 15760AT89C51RC2-SLSUM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TS80C32X2-VCB is determined by the following critical parameters:

Core Architecture Compatibility: Both the main part and substitute must use the 80C51 core processor to ensure instruction set compatibility and firmware portability.

Package Compatibility: The 44-PLCC (16.6x16.6) package defines the physical footprint and pin configuration. Substitute parts must use identical packaging to ensure PCB-level compatibility without redesign.

I/O Pin Count: 32 I/O pins are required to maintain signal routing and system interface integrity.

Voltage Supply Range: The substitute must operate within or encompass the 4.5V ~ 5.5V supply range of the original part.

Core Size: 8-bit architecture is mandatory for software compatibility.

The AT89C51RC2-SLSUM qualifies as a substitute based on these parameters: it maintains the 80C51 core, operates in the same 44-PLCC package, provides 32 I/O pins, and supports the required voltage supply range.

Parameter Comparison

Engineering Selection Recommendations

The AT89C51RC2-SLSUM is a direct substitute for the TS80C32X2-VCB based on core architectural compatibility and package equivalence. The substitute part is in active production status, ensuring long-term availability and supply chain reliability compared to the obsolete main part.

The AT89C51RC2-SLSUM offers enhanced compliance characteristics: it is ROHS3 compliant, whereas the TS80C32X2-VCB is RoHS non-compliant. This makes the substitute suitable for applications subject to RoHS regulations. Both parts maintain REACH Unaffected status and share the same ECCN and HTSUS classifications.

The substitute provides expanded operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C) and wider voltage supply range (2.7V ~ 5.5V versus 4.5V ~ 5.5V), offering greater design flexibility for diverse environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the AT89C51RC2-SLSUM directly replace the TS80C32X2-VCB without PCB modifications?

A: Yes. Both parts use the 80C51 core processor, feature identical 44-PLCC packaging (16.6x16.6), and provide 32 I/O pins. No PCB redesign is required for physical substitution.

Q: What is the primary difference between these two microcontrollers?

A: The TS80C32X2-VCB is a ROMless device requiring external program memory, while the AT89C51RC2-SLSUM integrates 32KB internal FLASH memory. The substitute eliminates the need for external memory components in many applications.

Q: Are the voltage supply ranges compatible?

A: The AT89C51RC2-SLSUM operates across 2.7V ~ 5.5V, which encompasses the TS80C32X2-VCB range of 4.5V ~ 5.5V. Systems designed for the original part will function correctly with the substitute at equivalent supply voltages.

Q: Does the substitute support the same connectivity interfaces?

A: Both parts support UART/USART connectivity. The AT89C51RC2-SLSUM additionally integrates SPI, PWM, and Watchdog Timer (WDT) peripherals, providing enhanced functionality beyond the original part.

Q: What is the significance of the product status difference?

A: The TS80C32X2-VCB is obsolete and no longer manufactured. The AT89C51RC2-SLSUM is in active production, ensuring availability for new designs and ongoing system support.

Q: Are there compliance or regulatory considerations for substitution?

A: The AT89C51RC2-SLSUM is ROHS3 compliant, making it suitable for applications requiring RoHS compliance. The original part is RoHS non-compliant. Both maintain REACH Unaffected status.