Microchip Technology ATF1504ASVL-20JI84

Overview

ATF1504ASVL-20JI84 from Microchip Technology is a 3.3V, 64-macrocell complex programmable logic device (CPLD) with 100-pin TQFP packaging, 15 ns maximum pin-to-pin delay, automatic 5 µA standby power, and IEEE 1149.1 JTAG boundary-scan support. It integrates TTL/SSI/MSI logic in industrial control systems requiring reprogrammable, low-power, PCI-compliant glue logic.

For engineers reviewing the ATF1504ASVL-20JI84 datasheet, ATF1504ASVL-20JI84 pinout, ATF1504ASVL-20JI84 application, or ATF1504ASVL-20JI84 equivalent, this page delivers verified macrocell count, standby current, JTAG compliance, global clock architecture, and power-down timing parameters directly applicable to board-level integration and CPLD replacement selection.

Technical Context

The ATF1504ASVL-20JI84 implements a 64-macrocell architecture with five product terms per macrocell expandable to 40 via cascade logic chains, three global clock inputs (GCLK1–GCLK3), and ITD circuits on clocks, inputs, and I/Os. 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, combinatorial or registered outputs, buried feedback, and programmable slew rate or open-collector output. Power management includes automatic 5 µA standby (ATF1504ASVL-specific), pin-controlled power-down (PD1/PD2), and per-macrocell reduced-power mode with tRPA adder for AC timing compensation.

Key Specifications

Pinout & Package

ATF1504ASVL-20JI84 is housed in a 100-lead thin quad flat pack (TQFP) with 0.5 mm lead pitch, 8 mm × 8 mm body, and exposed thermal pad. Pin 1 is marked by dot; pin numbering follows 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 XCR3064XL-10VQG44C, ATF1504ASVL-20JI84 delivers 95% lower standby current and integrated ITD for event-driven wake-up; compared with ATF1508ASVL-20JI100, it offers identical package and power profile at lower cost and reduced compilation time for logic-constrained designs.

Availability

ATF1504ASVL-20JI84 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, PCI add-in card logic, and automated test equipment pattern generation requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.

Supply support for ATF1504ASVL-20JI84 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 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 ATF1504ASVL series belongs to Microchip's legacy electrically-erasable CPLD family designed for reliable, reprogrammable glue logic in mission-critical industrial and telecom infrastructure where EEPROM nonvolatility and JTAG testability are mandatory.

FAQ

What is the standby current specification for ATF1504ASVL-20JI84?

The ATF1504ASVL-20JI84 features automatic 5 µA typical standby current (ICC1), a key differentiator from the non-L variant (ATF1504ASV), which lacks this low-power mode. This value is measured under VCC = max, VIN = 0 or VCC, and applies only to the "L" suffix version. The ATF1504ASVL-20JI84 achieves this via internal circuitry that detects logic inactivity and gates clock domains without external control signals.

Does ATF1504ASVL-20JI84 support JTAG boundary-scan testing?

Yes, ATF1504ASVL-20JI84 fully supports IEEE Std. 1149.1-1990 and 1149.1a-1993 boundary-scan testing via its dedicated TDI, TMS, TCK, and TDO pins. Each I/O and input pin has an associated boundary-scan cell (BSC), and the device implements SAMPLE/PRELOAD, EXTEST, BYPASS, IDCODE, and HIGHZ JTAG modes. The BSDL file is publicly available from Microchip for integration with standard test platforms.

What package type and pin count does ATF1504ASVL-20JI84 use?

ATF1504ASVL-20JI84 uses a 100-lead TQFP package (8 mm × 8 mm, 0.5 mm pitch) with 64 user I/O pins plus dedicated global control pins (GCLK1–GCLK3, GCLR, OE1/OE2, PD1/PD2) and JTAG interface. Pin 1 is marked by a dot; the pinout matches Table 1-6 and Figure on DS20006185A-page 14, confirming compatibility with standard 100-TQFP footprints and reflow profiles.

Can ATF1504ASVL-20JI84 be used in PCI-compliant designs?

Yes, ATF1504ASVL-20JI84 is explicitly certified PCI-compliant per PCI Local Bus Specification Revision 2.2. Its 3.3V operation, controlled slew rate outputs, and guaranteed timing parameters (e.g., tPD1 ≤ 20 ns, tSU ≥ 13.5 ns) meet PCI electrical and timing requirements. The device is commonly deployed in PCI add-in cards for address decoding, bus arbitration, and parity generation without additional level-shifting circuitry.

How does the power-down mode function on ATF1504ASVL-20JI84?

ATF1504ASVL-20JI84 supports pin-controlled power-down mode via PD1 or PD2 inputs. When either pin is driven high, device current drops below 5 mA, all internal logic states and outputs are latched, and inputs (except PD pins) are blocked. Recovery occurs within 1 µs of PD going low. The feature is enabled in the design file; macrocell resources remain usable for foldback/cascade logic even when PD pins are assigned.