Microchip Technology AC164334

Overview

AC164334 from Microchip Technology is a dedicated socket module for programming 8-lead, 2 mm × 3 mm DFN-packaged microcontrollers using the MPLAB PM3 programmer. It supports precise mechanical alignment, ZIF-style contact engagement, and thermal-safe insertion for fine-pitch DFN devices. Used in production programming of PIC and dsPIC MCUs in compact DFN-8 packages.

For engineers reviewing the AC164334 datasheet, AC164334 pinout, AC164334 application, or AC164334 equivalent, this module addresses critical requirements for reliable DFN-8 device handling, repeatable programming yield, and compatibility with the MPLAB PM3's socket interface and firmware revision support.

Technical Context

The AC164334 is a passive mechanical adapter-not an electronic IC-designed exclusively for the MPLAB PM3 universal device programmer. It features a precision-machined cavity with spring-loaded pogo pins aligned to the 0.5 mm pitch, dual-row, 8-lead DFN footprint (2 mm × 3 mm body, 0.75 mm height max).

No active circuitry, voltage regulation, or signal conditioning is present. Compatibility is limited to Microchip's MPLAB PM3 firmware v3.20 or later and requires use with the PM3's main socket carrier board (AC164110) and correct socket mounting hardware.

Key Specifications

Availability

AC164334 is available at Aetrix Electronics and suitable for high-reliability microcontroller programming, small-batch DFN device validation, and engineering lab firmware development requiring stable component supply and traceable sourcing.

Supply support for AC164334 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, FPGAs, and development tools for embedded control applications.

The AC164334 belongs to Microchip's MPLAB programming hardware ecosystem and was designed specifically to extend the MPLAB PM3's support to surface-mount DFN-8 microcontrollers used in space-constrained designs.

FAQ

Does AC164334 support QFN-8 or SOIC-8 packages?

No. The AC164334 is mechanically engineered only for 2 mm × 3 mm DFN-8 packages with 0.5 mm lead pitch and 0.75 mm max height. It does not accommodate QFN-8 (exposed pad, different land pattern) or SOIC-8 (0.050" pitch, through-hole or gull-wing leads). Using it with non-DFN-8 packages risks misalignment and contact damage.

Is AC164334 compatible with MPLAB ICD 4 or PICkit 4 programmers?

No. The AC164334 is a physical socket module designed exclusively for the MPLAB PM3 platform. It mounts directly onto the PM3's carrier board (AC164110) and relies on the PM3's proprietary socket interface and firmware. It is not electrically or mechanically compatible with MPLAB ICD 4, PICkit 4, or any other Microchip programmer.

What firmware version is required for AC164334 to function correctly?

The AC164334 requires MPLAB PM3 firmware version 3.20 or later. Earlier firmware versions do not recognize the DFN-8 socket configuration or initialize its pogo-pin mapping. Users must update the PM3 firmware via MPLAB X IDE before installing the AC164334 module.

Can AC164334 be used for programming devices other than Microchip PIC/dsPIC MCUs?

No. The AC164334 provides only mechanical and electrical interface compatibility with the MPLAB PM3. Programming functionality depends entirely on MPLAB PM3's supported device list. While the socket physically fits any 2×3 mm DFN-8, only Microchip devices listed in the MPLAB PM3 device database (e.g., PIC16F18326, dsPIC33EP64GS502) are programmable using AC164334.

Does AC164334 include the MPLAB PM3 main unit or carrier board?

No. The AC164334 is a socket module only. It requires the standalone MPLAB PM3 programmer (part number DV164035) and the socket carrier board (AC164110) to operate. Neither the PM3 unit nor the carrier board is included with AC164334 - all three components are orderable separately.