Microchip Technology ATF1504AS-10QI100

Overview

ATF1504AS-10QI100 from Microchip Technology (formerly Atmel) is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 64 macrocells, 7.5 ns pin-to-pin delay, and support for 125 MHz registered operation. It features in-system programmability via IEEE 1149.1 JTAG, three global clock inputs, and operates across -40°C to +85°C industrial temperature range in 100-lead TQFP package. It is used in legacy PCI-compliant control logic, board-level glue logic consolidation, and reconfigurable digital state machines.

For engineers reviewing the ATF1504AS-10QI100 datasheet, ATF1504AS-10QI100 pinout, ATF1504AS-10QI100 application, or ATF1504AS-10QI100 equivalent, this page delivers verified macrocell architecture details, JTAG boundary-scan compliance, power-down mode timing, I/O slew rate control, and industrial-grade DC/AC specifications - all confirmed for the exact -10 speed grade, QI100 (100-pin TQFP, industrial temp) variant.

Technical Context

The ATF1504AS-10QI100 implements a 64-macrocell CPLD architecture with five product terms per macrocell expandable to 40 via cascade logic, global and regional routing buses, and foldback feedback paths. Its logic blocks accept up to 40 signals from the global bus and support combinatorial or registered outputs with buried feedback.

It integrates three dedicated global clock pins (GCLK1–GCLK3), two programmable power-down pins (PD1/PD2), JTAG TAP controller compliant with IEEE 1149.1-1990/1149.1a-1993, and input transition detection (ITD) circuits on clocks, inputs, and I/Os - all confirmed for the -10 speed grade and QI100 package.

Key Specifications

Pinout & Package

ATF1504AS-10QI100 is housed in a 100-lead Thin Quad Flat Package (TQFP) with 0.5 mm pitch, measuring 14 mm × 14 mm. Pin functions are defined per the official Microchip datasheet Rev. 0950N–PLD–07/02, specifically for the 100-lead TQFP variant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar CPLD applications.

Compared with ATF1504AS-10AU100, the ATF1504AS-10QI100 offers superior thermal performance and smaller PCB area; compared with EPM3064ATC100-10, it provides 5 V I/O tolerance, integrated power-down control, and input transition detection - critical for industrial retrofit and mixed-voltage applications.

Availability

ATF1504AS-10QI100 is available at Aetrix Electronics and suitable for industrial control logic, legacy PCI interface glue logic, and reconfigurable digital front-end applications requiring stable component supply over extended production lifecycles.

Supply support for ATF1504AS-10QI100 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 support for the ATF1504AS family, including datasheets, programming tools, and long-term obsolescence management.

The ATF1504AS series was designed as a high-reliability, electrically-erasable CPLD for industrial and automotive-adjacent applications requiring in-system reprogrammability, wide temperature operation, and PCI compliance - targeting legacy system upgrades and long-lifecycle deployments.

FAQ

What is the maximum operating frequency of the ATF1504AS-10QI100?

The ATF1504AS-10QI100 supports registered operation up to 125 MHz, as confirmed by its -10 speed grade AC characterization. This applies to global clock inputs GCLK1–GCLK3 driving macrocell registers. The maximum internal array clock frequency is also 125 MHz, while fMAX (system-level clock frequency) is rated at 125 MHz for the -10 grade. All timing values are validated for the 100-lead TQFP package at industrial temperature.

Does the ATF1504AS-10QI100 support both 3.3 V and 5.0 V I/O operation?

Yes, the ATF1504AS-10QI100 supports dual I/O voltage operation: VCCIO may be set to either 3.0–3.6 V or 4.75–5.25 V, enabling interoperability with both 3.3 V and 5.0 V logic families. Core logic (VCCINT) remains fixed at 5.0 V ±10%. This capability is explicitly specified in the DC Characteristics table for the -10QI100 variant and verified across industrial temperature.

How does the power-down feature work on the ATF1504AS-10QI100?

The ATF1504AS-10QI100 implements pin-controlled power-down using PD1 or PD2: when either pin is driven high, supply current drops below 10 mA while latching all internal logic and output states. Inputs (except PDx) are blocked, but pin-keeper circuits remain active. This mode is enabled in the design file and is fully characterized in the Power Down AC Characteristics table for the -10 speed grade.

Is JTAG boundary-scan supported on the ATF1504AS-10QI100?

Yes, the ATF1504AS-10QI100 fully supports IEEE Std. 1149.1-1990 and 1149.1a-1993 boundary-scan testing via its dedicated TCK, TMS, TDI, and TDO pins. Each I/O and input pin has an associated boundary-scan cell (BSC), and BSDL files are provided by Microchip. JTAG functionality is programmable - disabling it frees the four pins for general I/O use.

What packaging and temperature range does the ATF1504AS-10QI100 use?

The ATF1504AS-10QI100 uses a 100-lead TQFP package (14 mm × 14 mm, 0.5 mm pitch) and is rated for the industrial temperature range of -40°C to +85°C. This is explicitly designated by the "QI100" suffix and confirmed in the Ordering Information section of Microchip's Rev. 0950N–PLD–07/02 datasheet.