Microchip Technology DVA1004

Overview

DVA1004 from Microchip Technology Inc. is a device adapter for the MPLAB ICE 2000 in-circuit emulator system, designed to interface with 8-pin, 14-pin, and 20-pin DIP-packaged PICmicro® MCUs. It provides mechanical socket compatibility, target power routing, oscillator clock injection, and configurable pin mapping via mechanical switches. Used during firmware development and debug of legacy 8/14/20-pin PIC microcontrollers.

For engineers reviewing the DVA1004 datasheet, DVA1004 pinout, DVA1004 application, or DVA1004 equivalent, this page delivers verified mechanical dimensions, supported package variants (8P/14P/20P DIP), target voltage handling (2.0–5.5 V), oscillator support (HS/XT/LP/RC modes), and switch-based signal routing logic - all critical for emulator integration and debug setup validation.

Technical Context

The DVA1004 is a passive, mechanically switched interface module-not an active IC-that routes target MCU pins (e.g., OSC1/OSC2, MCLR, T0CKI, RBx) between the emulator's processor module and on-board oscillator circuitry. Its four-position mechanical switches enable configuration of I/O direction, clock source selection, and peripheral signal assignment without soldering or firmware.

It supports emulation of multiple PICmicro families-including PIC12C5xx, PIC16C5xx, and early PIC16F devices-by matching DIP footprints and replicating oscillator loading (5–10 pF on OSC1/OSC2). No internal power regulation or signal conditioning is present; all logic-level translation and timing fidelity depend on the paired PCM-series processor module.

Key Specifications

Availability

DVA1004 is available at Aetrix Electronics and suitable for embedded firmware development, PIC microcontroller debug validation, and legacy hardware bring-up requiring stable component supply across industrial control, automotive ECU prototyping, and academic teaching labs.

Supply support for DVA1004 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 systems.

The DVA1004 belongs to Microchip's MPLAB ICE 2000 device adapter product line, engineered specifically to provide low-risk, socket-based in-circuit emulation for early-generation PICmicro MCUs in through-hole DIP packages.

FAQ

What is the DVA1004 used for in the MPLAB ICE 2000 system?

The DVA1004 is a device adapter that physically and electrically connects the MPLAB ICE 2000 emulator pod to 8-pin, 14-pin, or 20-pin DIP-packaged PICmicro MCUs. It routes target signals-including OSC1/OSC2, MCLR, and I/O pins-to either the emulator's processor module or its on-board oscillator circuit, enabling accurate clock emulation and debug visibility. The DVA1004 does not contain active silicon; its function is purely mechanical and interconnect-oriented.

Does the DVA1004 support surface-mount PIC devices?

No, the DVA1004 is strictly a DIP-footprint adapter and does not directly support SOIC, SSOP, QFP, or other surface-mount packages. For those, Microchip specifies transition sockets (e.g., DS51194-compliant) that mount between the DVA1004 and the target board. The DVA1004 itself only accepts through-hole DIP ICs and requires matching socket pitch (0.300") as confirmed in Table 6-1 of DS51140M.

How do the mechanical switches on the DVA1004 affect emulation behavior?

The four DIP switches on the DVA1004 determine whether specific target pins-such as OSC1, OSC2, MCLR, RB4, RB5, or T0CKI-are connected to the emulator's processor module or to the on-board oscillator chip. For example, setting S1/S2 to OSC1/OSC2 enables external crystal emulation, while setting S3 to MCLR routes reset control to the emulator. These switches directly define signal path integrity and must match the target device's oscillator mode and I/O configuration.

Can the DVA1004 be used with modern PIC microcontrollers like PIC16F or PIC18F families?

The DVA1004 was validated for legacy PICmicro families including PIC12C5xx, PIC16C5xx, and early PIC16F7xx devices in DIP packages-as documented in Microchip's DS51140M and associated Readme files. It is not qualified for newer high-speed or enhanced mid-range PIC18F devices, which require different processor modules (e.g., PCM18XA0) and often incompatible pin mappings or voltage tolerances.

What is the maximum current draw from the target system when using the DVA1004?

When the DVA1004 is connected-even if the emulator pod powers the processor module-the target system supplies power to the on-board oscillator circuitry on the adapter. This results in a guaranteed maximum current draw of 10 mA from the target's VDD rail, as explicitly stated in Section 5.0 of DS51140M. This load remains constant regardless of emulator operating mode or clock source selection.