PA28-32-DP-PP – 28-Pin DIP Socket to 32-Pin PLCC Emulator Adapter (EPROM Wiring, Skips PLCC 1, 12, 17, 26)

Overview

PA28-32-DP-PP is a PLCC emulator adapter designed for common 27x-series EPROM devices. As a result, you can use 28-pin DIP EPROMs in systems that require a 32-pin PLCC footprint.

On the top side, the adapter provides a 28-pin DIP socket on 0.100″ (2.54 mm) pitch. Therefore, it accepts 27×64, 27×128, 27×256, and 27×512 DIP devices used in development and validation workflows.

On the bottom side, the adapter presents a 32-pin PLCC plug interface. Consequently, it inserts directly into PLCC emulator sockets and PLCC-based targets.

This adapter uses device-specific EPROM wiring, not full 1:1 mapping. In particular, it leaves PLCC pins 1, 12, 17, and 26 unconnected. As a result, the 28-pin DIP device aligns correctly to the 32-pin PLCC interface.

Technical Specifications

• Part Number: PA28-32-DP-PP
• Adapter Type: PLCC Emulator Adapter
• Top Interface: DIP-28 socket, 0.100″ (2.54 mm) pitch
• Bottom Interface: PLCC-32 plug
• Wiring Configuration: Device-specific EPROM wiring; skips PLCC pins 1, 12, 17, and 26
• Device Support: 27×64, 27×128, 27×256, 27×512 (DIP-28)
• Pitch: DIP side 0.100″ (2.54 mm); PLCC side 0.050″ (1.27 mm)
• JEDEC Reference: PLCC-32, MS-016
• Mount Interface: PLCC-32 plug insertion
• Typical Applications: EPROM emulation, device programming, lab validation
• Compatibility: PLCC-32 emulator sockets and PLCC-32 targets supporting 27x-series EPROM workflows

Adapter Wiring

PLCC pins 1, 12, 17, and 26 are skipped. The table below shows the connections from the DIP device to the adapter’s PLCC plug.

Key Features

• DIP-28 socket supports standard 27x-series EPROM devices
• PLCC-32 plug inserts directly into emulator sockets and PLCC targets
• Defined skipped PLCC pins align DIP-28 devices to PLCC-32 interfaces
• Suitable for repeated lab use in programming and emulation workflows

Applications

• EPROM emulation for 27×64, 27×128, 27×256, and 27×512 devices
• Device programming and verification
• Firmware development and validation
• Engineering and laboratory test setups

Package Includes

• One PA28-32-DP-PP DIP-28 socket to PLCC-32 emulator adapter

Compatibility Note

This adapter does not use 1:1 wiring. Instead, it skips PLCC pins 1, 12, 17, and 26 to support DIP-28 EPROM alignment in a PLCC-32 footprint. Therefore, confirm target requirements before use.

Why Choose This Adapter

PA28-32-DP-PP simplifies EPROM testing in PLCC-based systems. Moreover, it provides a documented pin relationship between DIP-28 devices and PLCC-32 sockets.

Because it uses controlled mapping, it reduces wiring errors. As a result, engineers spend less time troubleshooting fixtures.

Streamline Your Workflow

Use this adapter to move DIP EPROM devices into PLCC emulator environments quickly. Consequently, validation and programming cycles stay efficient.