Infineon Technologies CY37064P44-125AXC

Overview

CY37064P44-125AXC from Cypress Semiconductor is a 64-macrocell In-System Reprogrammable (ISR™) Complex Programmable Logic Device (CPLD) in a 44-pin TQFP package, operating at 5V with 125 MHz maximum frequency (tPD = 12.5 ns), PCI-compatible I/O, and JTAG-based reconfiguration. It features four synchronous clocks, programmable bus-hold on all I/Os, and supports 32 or 64 I/O pins depending on configuration.

For engineers reviewing the CY37064P44-125AXC datasheet, CY37064P44-125AXC pinout, CY37064P44-125AXC application, or CY37064P44-125AXC equivalent, key selection criteria include its fixed-pinout migration path across Ultra37000 densities, zero-delay PIM routing, product-term steering/sharing capability, and 5V/3.3V I/O level flexibility via VCCO pin assignment.

Technical Context

The CY37064P44-125AXC implements a modular architecture with two logic blocks, each containing a 72×87 product term array, intelligent product term allocator (0–16 terms per macrocell), and 16 macrocells (mix of I/O and buried). All signals route through a fully global Programmable Interconnect Matrix (PIM) with no fanout, expander, or pin-type delay penalties.

It supports flexible clocking: four global synchronous clocks (CLK0–CLK3) with polarity control, plus one asynchronous product-term clock (PTCLK); dedicated input/clock pins enable system-level timing control; bus-hold and slew-rate control are per-I/O configurable for noise and EMI management.

Key Specifications

Pinout & Package

Package: 44-pin Thin Quad Flat Package (TQFP), 10 mm × 10 mm, 0.8 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar CPLD-based glue logic applications.

Compared with XC9572XL-10VQ44C and ATF1504AS-10QU44, CY37064P44-125AXC uniquely combines 5V/3.3V I/O flexibility, PCI electrical compliance, and full JTAG boundary scan - making it the only choice for retrofitting legacy 5V systems requiring field-upgradable, noise-resilient control logic.

Availability

CY37064P44-125AXC is available at Aetrix Electronics and suitable for PCI interface design, industrial PLC backplane logic, legacy system emulation, and automated test equipment signal conditioning requiring stable component supply and long-lifecycle support.

Supply support for CY37064P44-125AXC 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

Cypress Semiconductor (now part of Infineon Technologies) is a U.S.-based semiconductor company specializing in programmable logic, memory, and mixed-signal solutions for industrial, automotive, and communications markets.

The Ultra37000 CPLD family was designed to deliver high-density, pin-compatible, in-system reprogrammable logic with deterministic timing - specifically targeting replacement of obsolete PAL/GAL devices and PCI-compliant system integration.

FAQ

What is the difference between CY37064P44-125AXC and CY37064V-125AXC?

CY37064P44-125AXC is a 5V-core device supporting both 5V and 3.3V I/O levels via VCCO configuration and requires 5V for JTAG programming. CY37064V-125AXC is a 3.3V-core variant with lower power consumption, 3.3V-only VCCO, and 3.3V JTAG programming - they are not voltage-interchangeable and differ in internal voltage regulation and I/O clamp structure.

Does CY37064P44-125AXC support boundary scan testing?

Yes, CY37064P44-125AXC fully complies with IEEE 1149.1 (JTAG) for boundary scan testing. Its TCK, TMS, TDI, and TDO pins implement mandatory instruction register, data register, and bypass functionality - enabling automated PCB test, interconnect verification, and in-circuit debugging without physical probe access.

Can this device replace a 22V10 PAL in an existing design?

Yes - the Ultra37000 architecture was explicitly designed to extend the 22V10 paradigm to higher densities. CY37064P44-125AXC supports identical combinatorial/register modes, product-term-based logic equations, and pin-locked migration from smaller Ultra37000 members - though pin mapping must be verified against the 44-pin TQFP I/O allocation, not the 24-pin DIP of the 22V10.

Is the 44-pin TQFP package lead-free and RoHS-compliant?

Yes, the "X" suffix in CY37064P44-125AXC indicates a lead-free, RoHS-compliant package per Cypress specification. The device uses matte tin finish on leads and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3), requiring bake conditioning before reflow if exposed to ambient >30°C/60% RH for >168 hours.