Microchip Technology ATF15XXDK3-SAJ84

Overview

ATF15XXDK3-SAJ84 from Microchip Technology (formerly Atmel) is an 84-pin PLCC socket adapter board designed for the ATF15xx-DK3 CPLD Development/Programmer Kit. It enables in-system programming and functional evaluation of ATF1502AS/ASL, ATF1504AS/ASL, ATF1508ASV/ASVL, ATF1502ASV, ATF1504ASV/ASVL, and ATF1508AS/ASL CPLDs in 84-pin PLCC packaging via IEEE 1149.1 JTAG interface. The board supports VCCIO selection (1.8V/2.5V/3.3V/5.0V) and VCCINT selection (1.8V/3.3V/5.0V), integrates direct connections to four 7-segment displays, eight LEDs, eight push-button switches, GCLR/OE1 controls, and dual GCLK inputs.

For engineers reviewing the ATF15XXDK3-SAJ84 datasheet, ATF15XXDK3-SAJ84 pinout, ATF15XXDK3-SAJ84 application, or ATF15XXDK3-SAJ84 equivalent, this adapter provides verified mechanical and electrical compatibility with the ATF15xx-DK3 main board, full JTAG signal routing (TCK/TMS/TDI/TDO), and native support for 84-pin PLCC CPLDs including ATF1508ASV and ATF1504ASVL across all speed grades - enabling rapid prototyping, logic verification, and ISP validation without custom PCB design.

Technical Context

The ATF15XXDK3-SAJ84 is a passive interposer board with no active components; it routes all 84 PLCC socket pins to matching headers (JP1/J P2) that mate with the ATF15xx-DK3 main board's female connectors. It implements direct, unbuffered signal paths for JTAG (TCK/TMS/TDI/TDO), global clock inputs (GCLK1/GCLK2), dedicated control pins (GCLR, OE1), power rails (VCCIO, VCCINT, GND), and all user I/O pins used by on-board peripherals - including those driving 7-segment displays (DSP1–DSP4), LEDs (LED1–LED8), and push-button switches (SW1–SW8).

Pin mapping follows Atmel's documented 84-pin PLCC assignments: GCLK1 at pin 83, GCLK2 at pin 2, GCLR at pin 1, OE1 at pin 84, TDI at pin 14, TDO at pin 71, TMS at pin 23, and TCK at pin 62. All I/O pins are accessible via JP1/JP2 headers and retain full compatibility with the DK3 board's voltage-selectable regulators, current measurement jumpers, and oscillator circuitry.

Key Specifications

Availability

ATF15XXDK3-SAJ84 is available at Aetrix Electronics and suitable for CPLD-based industrial control logic validation, FPGA migration prototyping, legacy PLD replacement testing, and educational digital systems labs requiring stable component supply and long-term toolchain continuity.

Supply support for ATF15XXDK3-SAJ84 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 acquired Atmel in 2016 and maintains full technical documentation, software tools (ATMISP, ProChip Designer), and legacy product support for the ATF15xx family.

The ATF15XXDK3-SAJ84 belongs to the ATF15xx-DK3 development ecosystem - engineered to accelerate evaluation and programming of Atmel's Logic Doubling® CPLDs, specifically targeting engineers transitioning from schematic-based PLD design to JTAG-based iterative development workflows.

FAQ

What is the primary function of the ATF15XXDK3-SAJ84?

The ATF15XXDK3-SAJ84 is an 84-pin PLCC socket adapter board for the ATF15xx-DK3 CPLD development kit. It enables physical and electrical interfacing of ATF15xx CPLDs in 84-pin PLCC packages - routing all signals (JTAG, clocks, I/O, power) between the target device and the main DK3 board. It does not operate independently and requires the ATF15xx-DK3 base board to function.

Which specific ATF15xx devices are supported by the ATF15XXDK3-SAJ84?

The ATF15XXDK3-SAJ84 supports all ATF15xx CPLDs offered in 84-pin PLCC packaging, including ATF1502AS/ASL, ATF1504AS/ASL, ATF1508ASV/ASVL, ATF1502ASV, ATF1504ASV/ASVL, and ATF1508AS/ASL - across all standard speed grades. Pin compatibility is confirmed per Atmel's official DK3 User Guide (Atmel-3605C).

Does the ATF15XXDK3-SAJ84 include voltage regulation or active circuitry?

No. The ATF15XXDK3-SAJ84 is a passive adapter board with no integrated regulators, level shifters, or active components. It relies entirely on the ATF15xx-DK3 main board for regulated VCCIO and VCCINT supplies, JTAG buffering, oscillator generation, and peripheral control logic. All power and signal integrity is managed by the DK3 base unit.

How does the ATF15XXDK3-SAJ84 connect to the ATF15xx-DK3 main board?

The ATF15XXDK3-SAJ84 connects via two 40-pin male headers (JP1 and JP2) on its underside, which mate precisely with the JP3 and JP4 female headers on the ATF15xx-DK3 main board. This connection delivers full pin access - including JTAG, clocks, I/O, GCLR/OE1, and power rails - while maintaining mechanical alignment and signal integrity per Atmel's hardware design specifications.

Can the ATF15XXDK3-SAJ84 be used with other development systems besides the ATF15xx-DK3?

No. The ATF15XXDK3-SAJ84 is mechanically and electrically designed exclusively for use with the ATF15xx-DK3 CPLD Development/Programmer Board. Its header layout, pinout mapping, and signal routing assume the DK3's voltage selection jumpers, 2MHz oscillator, LED/switch/display interfaces, and JTAG cascade architecture - making it incompatible with third-party or generic JTAG programmers.