Infineon SAB 80C517A-N18-T3 8-Bit Microcontroller 18MHz PLCC-84 Used Pull

Infineon SAB80C517A 8-Bit CMOS High-Performance 8051 Microcontroller IC

Condition

Used equipment pull. Hand-pulled from decommissioned equipment. Evaluation: Visual inspection only. Function testing not performed. Markings legible: Infineon SAB 80C517A-N18-T3. Sold each.

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Product Overview

Infineon SAB 80C517A-N18-T3 is a high-performance 8-bit CMOS microcontroller based on the 8051 architecture. Operating at clock frequencies up to 18 MHz, this ROMless device integrates a 32-bit Multiply and Divide Unit (MDU) alongside a 10-bit analog-to-digital converter with 12 multiplexed inputs. Built in an 84-pin plastic leaded chip carrier (PLCC-84), it expands standard 8051 capabilities with 56 I/O lines, four 16-bit timers, and a flexible Capture/Compare Unit for precision timing and motor control.

Key Features

• Architecture: 8-bit CMOS microcontroller, superset of Intel 8051
• Package: 84-pin Plastic Leaded Chip Carrier (PLCC-84)
• Clock Frequency: Up to 18 MHz (-N18 rating)
• Memory Configuration: ROMless (supports up to 64 KB external program memory)
• On-Chip RAM: 256 bytes internal RAM plus 2 KB on-chip XRAM (2.3 KB total)
• Math Coprocessor: Dedicated 32-bit Multiply and Divide Unit (MDU)
• Analog Converter: 10-bit A/D converter with 12 multiplexed inputs
• I/O Count: 56 parallel I/O lines and 12 dedicated input lines
• Operating Temperature: -40°C to +85°C (T3 extended industrial range)

Applications

• Industrial automation and legacy PLC controller maintenance
• Precision stepper and DC motor drive timing setups using the onboard CCU
• Benchtop instrumentation repairs requiring 8051-derivative drop-in replacement
• Embedded retrocomputing builds and custom hardware development

Frequently Asked Questions

Is internal ROM present on this chip?

This is the ROMless variant (80C517A), which requires external program memory for firmware execution up to 64 KB.

What package footprint does this device use?

It is housed in an 84-pin plastic leaded chip carrier (PLCC-84), suitable for through-hole or surface-mount PLCC sockets.

What testing has been performed on this pulled microcontroller?

This unit is a clean equipment pull that has undergone visual inspection only; function testing has not been performed. It is covered by our satisfaction guarantee.

Before modern 32-bit cores took over embedded work, chips like this pushed the classic 8051 platform into heavy industrial duty with dedicated math silicon. When an older control board needs its original brains restored, this chip gets the machine back on the clock.