Microchip Technology DVA16XP280

Overview

DVA16XP280 from Microchip Technology is a 28-pin DIP device adapter for the MPLAB ICE 2000 in-circuit emulator system, designed to interface with PIC16C554/558/564/565/574/576 microcontrollers. It provides target board connectivity, oscillator signal routing via dual-switch configuration (S1/S2), and supports internal/external clock selection. The adapter enables low-voltage emulation down to 2.0V and accommodates standard 0.300" DIP footprints.

For engineers reviewing the DVA16XP280 datasheet, DVA16XP280 pinout, DVA16XP280 application, or DVA16XP280 equivalent, this adapter is critical for validating PIC16C5xx firmware behavior under real-world power, clock, and I/O loading conditions during embedded development.

Technical Context

The DVA16XP280 implements mechanical switch-based signal routing between target pins OSC1/OSC2 and either the PCM16XA0 processor module or the on-board oscillator circuit. It supports HS and IN oscillator modes via S1/S2 switch positions, enabling accurate emulation of crystal- and RC-based timing configurations.

It draws ≤10 mA from the target system even when emulator power is active, due to on-board oscillator circuitry requiring target VCC. Its 0.300" DIP footprint (2.200" × 1.700") matches standard through-hole layouts and requires no transition socket for direct target board soldering.

Key Specifications

Availability

DVA16XP280 is available at Aetrix Electronics and suitable for PIC16C5xx-based industrial control, sensor node validation, and legacy automotive ECU development requiring stable component supply across long-lifecycle projects.

Supply support for DVA16XP280 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 DVA16XP280 belongs to Microchip's MPLAB ICE 2000 device adapter product line, engineered specifically to enable hardware-accurate in-circuit emulation of mid-range PICmicro MCUs during firmware bring-up and debug.

FAQ

What is the primary function of the DVA16XP280 in the MPLAB ICE 2000 system?

The DVA16XP280 serves as a 28-pin DIP device adapter that bridges the MPLAB ICE 2000 emulator pod to target boards hosting PIC16C554/558/564/565/574/576 microcontrollers. It routes oscillator signals (OSC1/OSC2) via mechanical switches and provides power and signal integrity for accurate in-circuit emulation. The DVA16XP280 ensures correct clock domain alignment and load matching during firmware validation.

Which PICmicro MCU families does the DVA16XP280 support?

The DVA16XP280 is explicitly designated for PIC16C5xx devices: PIC16C554, PIC16C558, PIC16C564, PIC16C565, PIC16C574, and PIC16C576. These are 8-bit CMOS microcontrollers with EPROM program memory, used in cost-sensitive, low-power embedded applications. The DVA16XP280's switch mapping and footprint match their 28-pin DIP packaging and oscillator interface requirements.

How do the S1 and S2 switches on the DVA16XP280 configure oscillator operation?

S1 and S2 are SPDT mechanical switches that route OSC1 and OSC2 between the target MCU and either the PCM16XA0 processor module or the on-board oscillator circuit. For HS mode, S1 is set to OSC2EXT and S2 to OSC1EXT; for IN mode, S1 is set to OSC2INT and S2 to OSC1INT. This allows the DVA16XP280 to emulate both external crystal and internal RC oscillator behaviors accurately.

Does the DVA16XP280 require a transition socket for surface-mount targets?

No - the DVA16XP280 is a 28-pin DIP adapter intended for through-hole target boards. It uses a standard 0.300" DIP footprint (2.200" × 1.700") and mates directly with Samtec APA-series DIP plugs. Surface-mount targets (e.g., SOIC, SSOP, TQFP) require separate transition sockets - the DVA16XP280 itself does not support them.

What is the maximum current draw from the target system when using the DVA16XP280?

The DVA16XP280 draws up to 10 mA from the target system's VCC, even when the emulator pod supplies power to the processor module. This current powers the on-board oscillator circuitry required to replicate the target MCU's clock behavior. The value is consistent across operating voltages (2.0V–5.5V) and is documented in Section 5.0 of DS51140M.