Microchip Technology AC164323

Overview

AC164323 from Microchip Technology is a PICkit™ 2 Flash Starter Kit evaluation and programming tool for 8-bit PIC® microcontrollers. It supports ICSP™ (In-Circuit Serial Programming), features an integrated USB interface, includes on-board debugging capability via MPLAB ICD 2 protocol, and enables firmware development for baseline, mid-range, and PIC18F devices in DIP, SOIC, and SSOP packages.

For engineers reviewing the AC164323 datasheet, AC164323 pinout, AC164323 application, or AC164323 equivalent, this kit serves as a low-cost entry point for prototyping, firmware validation, and production programming of legacy PICmicro® MCUs - especially where space-constrained DIP-based evaluation, USB-hosted debug visibility, or field-upgradeable bootloader development is required.

Technical Context

The AC164323 implements a PIC18F2550-based host controller with integrated USB 2.0 Full-Speed interface, enabling direct communication with Windows-based MPLAB IDE v8.x without external drivers. It delivers regulated 3.3V/5V target power, supports VDD ranging from 2.0V to 6.0V, and provides real-time voltage monitoring and current limiting during programming.

Its firmware implements the MPLAB ICD 2 command set for single-step execution, register inspection, and memory read/write operations. The board includes a removable 28-pin DIP socket, 6-pin ICSP header, and jumper-selectable VDD source (USB or external), making it compatible with discrete target boards and Microchip's demonstration platforms like the PICDEM™ series.

Key Specifications

Availability

AC164323 is available at Aetrix Electronics and suitable for embedded firmware development, educational lab instruction, small-batch production programming, and legacy PIC MCU maintenance requiring stable component supply and long-term toolchain continuity.

Supply support for AC164323 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 Inc. is a leading provider of microcontroller, analog, FPGA, and connectivity solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The AC164323 belongs to Microchip's PICkit™ family of low-cost development tools, designed specifically to accelerate evaluation, debugging, and programming of 8-bit PIC® microcontrollers in academic, hobbyist, and professional engineering environments.

FAQ

What is the AC164323 used for?

The AC164323 is a PICkit™ 2 Flash Starter Kit used for programming and in-circuit debugging of 8-bit PIC® microcontrollers. It enables firmware development, code verification, and hardware bring-up for PIC10F, PIC12F, PIC16F, and PIC18F devices. The AC164323 integrates USB connectivity, on-board power regulation, and full MPLAB ICD 2 protocol support - making it ideal for rapid prototyping and classroom labs where cost and simplicity are critical.

Does the AC164323 support dsPIC® or PIC24 devices?

No, the AC164323 does not support dsPIC® or PIC24 microcontrollers. Its firmware and hardware are optimized exclusively for 8-bit PIC® families (PIC10F, PIC12F, PIC16F, PIC16C, PIC18F). For dsPIC30F/33F or PIC24 devices, Microchip recommends the PICkit™ 3 (PG164130) or MPLAB ICD 3. The AC164323 lacks the voltage translation, clocking architecture, and debug protocol extensions required for 16-bit devices.

Can the AC164323 program OTP or ROM-based PIC microcontrollers?

Yes, the AC164323 supports programming of One-Time-Programmable (OTP) and mask-programmed ROM devices within its supported 8-bit PIC® families, including PIC16C5x, PIC16C6x, and PIC16C7x parts. It applies correct VPP programming voltages and timing sequences per Microchip's specification sheets. However, OTP devices cannot be reprogrammed after initial write - a limitation inherent to the silicon, not the AC164323.

Is the AC164323 compatible with modern versions of MPLAB X IDE?

The AC164323 is officially supported only in MPLAB IDE v8.92 and earlier. It is not recognized by MPLAB X IDE (v3.0+), which requires PICkit™ 3 or later. While third-party utilities may enable basic hex file loading, full debugging features - such as breakpoints and register inspection - are unavailable under MPLAB X. For new designs, use AC164130 (PICkit™ 3) instead of AC164323.

What package types can the AC164323 program directly?

The AC164323 includes a built-in 28-pin DIP socket for direct insertion of DIP-packaged PIC microcontrollers (e.g., PIC16F877A, PIC18F2550). For SOIC, SSOP, or QFN devices, it requires an external adapter board (e.g., AC162049) connected via the 6-pin ICSP™ header. The AC164323 itself does not support surface-mount devices without auxiliary hardware.