Microchip Technology AC162049

Overview

AC162049 from Microchip Technology is a Universal Programming Module (UPM) designed to interface FLASH-based DIP-packaged microcontrollers with the MPLAB ICD 2 In-Circuit Debugger and PICSTART Plus programmers. It supports 18-, 28-, and 40-pin DIP devices via a ZIF socket, requires external 9V DC power (AC162039), and uses configurable jumpers for device-specific signal routing.

For engineers reviewing the AC162049 datasheet, AC162049 pinout, AC162049 application, or AC162049 equivalent, this module enables low-cost, flexible programming of legacy Microchip DIP microcontrollers where pin configuration compatibility limits direct programmer support - especially critical during prototyping, firmware validation, and small-batch production of 8-bit PIC MCU designs.

Technical Context

The AC162049 functions as a passive signal-routing adapter between Microchip's legacy programmers and DIP-packaged MCUs. It contains no active logic or firmware; all programming signals (PGC, PGD, VDD, VSS, MCLR, etc.) are routed through manually configured flying-lead jumpers at J3 to match target device pinouts.

Its ZIF socket accepts 18-, 28-, and 40-pin DIP packages with mechanical locking; LED 1 provides visual feedback only during active programming cycles. No voltage regulation or level-shifting circuitry is integrated - power and signal integrity depend entirely on the host programmer and external 9V supply.

Key Specifications

Availability

AC162049 is available at Aetrix Electronics and suitable for microcontroller prototyping, legacy PIC firmware validation, and small-volume DIP-based production programming requiring stable component supply and documented toolchain continuity.

Supply support for AC162049 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and development tools for embedded control applications.

The AC162049 belongs to Microchip's legacy programming hardware product line, engineered specifically to extend support for older DIP-packaged PIC microcontrollers across discontinued or pin-limited programmers like the MPLAB ICD 2 and PICSTART Plus.

FAQ

Does AC162049 include firmware or require driver installation?

No. The AC162049 is a passive hardware adapter with no embedded firmware, microcontroller, or programmable logic. It requires no drivers or software installation - operation depends solely on correct jumper configuration and host programmer (MPLAB ICD 2 or PICSTART Plus) firmware version compatibility. The AC162049 functions only when used with supported MPLAB IDE versions and matching Readme configuration files.

Can AC162049 be used with MPLAB ICD 3 or PICkit 4?

No. The AC162049 is explicitly designed for and validated only with the MPLAB ICD 2 and PICSTART Plus programmers. It lacks electrical and protocol compatibility with MPLAB ICD 3, PICkit 4, or Snap - these tools use different signal timing, voltage levels, and connector interfaces. Using AC162049 with unsupported programmers may result in communication failure or damage.

What is the purpose of the seven jumpers at J3 on AC162049?

The seven flying-lead jumpers at J3 on the AC162049 route programming signals (PGC, PGD, MCLR, VDD, VSS, etc.) between the host programmer headers and the ZIF socket pins. Their configuration varies per target DIP microcontroller and must be set according to the Readme files included with MPLAB IDE - incorrect jumpering prevents programming or causes bus contention.

Is an external power supply mandatory for AC162049 operation?

Yes. An external 9V DC power supply (Microchip part AC162039) is mandatory when using the AC162049 with the MPLAB ICD 2. The ICD 2 does not provide sufficient current to power both itself and the target device through the UPM. Omitting AC162039 will result in failed programming attempts or unstable operation of the AC162049.

How is device insertion and removal handled on AC162049?

The AC162049 uses a mechanical ZIF socket: power must be removed before insertion; the device must align with pin 1 at the socket top; the handle must be fully lowered before insertion and raised to 90° (locked) before programming. After programming completes, power is removed and the handle is lowered to unlock - the device lifts out freely without force. Failure to lock the handle prevents reliable contact and causes programming failure.