Microchip Technology ATF1504ASV-15QI100

Overview

ATF1504ASV-15QI100 from Microchip Technology is a 3.3V, 64-macrocell complex programmable logic device (CPLD) with 100-pin TQFP packaging, 15 ns pin-to-pin delay, registered operation up to 77 MHz, and in-system programmability via IEEE 1149.1 JTAG. It integrates legacy TTL/SSI/MSI logic and supports PCI-compliant embedded control in industrial automation interfaces.

For engineers reviewing the ATF1504ASV-15QI100 datasheet, ATF1504ASV-15QI100 pinout, ATF1504ASV-15QI100 application, or ATF1504ASV-15QI100 equivalent, this page delivers verified macrocell architecture, power-down timing constraints, JTAG boundary-scan compliance, and industrial-temperature I/O drive specifications - all confirmed for the exact -15QI100 variant.

Technical Context

The ATF1504ASV-15QI100 implements a 64-macrocell array with five product terms per macrocell expandable to 40 via cascade logic, three global clock inputs (GCLK1–GCLK3), and dedicated global control pins (GCLR, OE1, OE2). Its switch matrix selects up to 40 signals from a global bus fed by all 64 macrocell feedback paths and all I/O pins.

Each macrocell supports D/T/Latch flip-flops with rising-edge clocking, programmable output slew rate, open-collector option, and buried registered feedback. The device includes ITD circuits on global clocks and I/Os, fast registered input from product terms, and VCC power-up reset with selectable hysteresis.

Key Specifications

Pinout & Package

ATF1504ASV-15QI100 is housed in a 100-lead thin quad flat pack (TQFP) with 0.5 mm pitch, exposed thermal pad, and RoHS-compliant lead-free finish. Pin 1 is marked by dot; pin numbering follows standard counter-clockwise sequence from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ATF1504ASVL-15QI100, the ATF1504ASV-15QI100 trades automatic standby for deterministic power-down control via PD pins - critical for systems requiring precise wake-up latency. Versus XC95144XL-10TQ100C, it offers superior EEPROM reliability (10k vs. 1k P/E cycles) and lower static power, but less logic capacity.

Availability

ATF1504ASV-15QI100 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, PCI bus interface logic, and automotive body control modules requiring stable component supply across extended lifecycle commitments.

Supply support for ATF1504ASV-15QI100 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 leading provider of microcontrollers, analog components, and programmable logic solutions, serving industrial, automotive, and communications markets with vertically integrated silicon and software tools.

The ATF1504ASV series was designed as a high-reliability, in-system programmable CPLD family targeting legacy logic replacement and industrial control applications with robust EEPROM technology and JTAG debug infrastructure.

FAQ

What is the maximum operating frequency of the ATF1504ASV-15QI100?

The ATF1504ASV-15QI100 supports a maximum internal global clock frequency of 76.9 MHz (tCNT = 13 ns minimum period) and up to 100 MHz for specific clock paths. This is validated for the -15 speed grade under industrial temperature conditions with VCC = 3.0–3.6V. The ATF1504ASV-15QI100 achieves this using three dedicated low-skew global clock inputs and optimized macrocell routing.

Does the ATF1504ASV-15QI100 support boundary-scan testing?

Yes, the ATF1504ASV-15QI100 fully supports IEEE Std. 1149.1-1990 and 1149.1a-1993 boundary-scan testing via its four-pin JTAG interface (TDI, TMS, TCK, TDO). Each of its 64 I/O pins and four dedicated inputs has an associated boundary-scan cell, enabling comprehensive board-level interconnect testing without requiring additional test fixtures.

How does the power-down mode function on the ATF1504ASV-15QI100?

The ATF1504ASV-15QI100 enters power-down mode when either PD1 or PD2 pin is driven high, reducing supply current to below 5 mA. During this state, all internal logic states and registered outputs are latched and held, and I/O pins retain their last-driven value via pin-keeper circuits. The ATF1504ASV-15QI100 resumes full operation within 1 µs after PD is pulled low.

Can the JTAG pins on the ATF1504ASV-15QI100 be used as general-purpose I/O?

Yes - the JTAG pins (TDI, TMS, TCK, TDO) on the ATF1504ASV-15QI100 are configurable as general-purpose I/O when JTAG functionality is disabled in the design file. This provides four additional user I/Os, though doing so forfeits in-system programming and boundary-scan capabilities for that device instance.

What is the purpose of the pin-keeper circuit in the ATF1504ASV-15QI100?

The pin-keeper circuit in the ATF1504ASV-15QI100 maintains the last-driven logic state (high or low) on input and I/O pins when they float, preventing indeterminate voltage levels that cause shoot-through current and system noise. This eliminates the need for external pull-up/down resistors and reduces DC power consumption - a key feature confirmed for the ATF1504ASV-15QI100 in industrial temperature operation.