Manufacturer Part Number

TS80C31X2-VIB

Description

8-bit microcontroller without on-chip ROM in a 44-pin PLCC package. Based on the 80C51 core, operates at up to 60MHz or 30MHz depending on voltage. Obsolete status, only available as new original stock (894 pcs). Requires external program memory due to ROMless architecture.

Specifications

Core: 80C51, 8-bit architecture

Speed: Up to 60MHz/30MHz

I/O Ports: 32

RAM: 128 x 8 bytes

Operating Voltage: 4.5V to 5.5V

UART/USART support for serial communication

Reset: Power-On Reset (POR)

Package: 44-PLCC (16.6 x 16.6mm), J-Lead Surface Mount

Operating Temperature: -40°C to +85°C

RoHS Status: Non-compliant

Moisture Sensitivity: MSL 2 (1 Year)

Internal Oscillator

No built-in EEPROM or Data Converters

Device Structure

Monolithic integrated circuit microcontroller based on the 8051 architecture. ROMless design requires external code memory. Includes 32 general-purpose input/output lines. Internal RAM, serial port, and power-on reset circuitry all integrated. Uses a PLCC surface-mount package.

Performance Characteristics

High-speed operation up to 60MHz, suitable for demanding control applications. Reliable operation over industrial temperature range. Fast and flexible I/O handling via 32 lines. UART/USART enables standard serial communications.

Application Environments

Industrial automation, embedded control systems, instrumentation, and legacy systems already built around the 8051 family. Suitable for designs where external program memory is preferred or required.

Selection Guidelines

Ensure your application accepts surface-mount PLCC packaging and the specified operating voltage.

Assess the need for external program memory and whether a ROMless microcontroller is necessary.

Check if RoHS compliance is required for your application as this model does not comply.

Confirm operating speed requirements (up to 60MHz) and I/O needs match this product’s features.

Review application temperature range and mounting requirements.

Usage Considerations

External ROM/EPROM/Flash is required to store the application code.

Non-compliance with RoHS may restrict use in some regions or applications.

This is an obsolete part; ensure long-term support and spares availability.

Mounting requires careful handling due to MSL 2 moisture sensitivity.

Check compatibility with existing 8051-based systems.

Not suitable for designs requiring on-chip nonvolatile memory.

Potential Equivalent/Replacement Models

AT89S51-24JU is a suggested substitute, offering similar 8051 core features with on-chip program memory (24MHz, 8-bit MCU). Check compatibility before replacing due to possible differences in speed, memory, or package. For other alternatives, or if no direct equivalents are found, contact the Ariat-Tech sales team for up-to-date cross-reference and sourcing support.

For further model equivalents, consultation is recommended due to the obsolete status and unique configuration of the TS80C31X2-VIB.

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