Infineon Technologies CY37064P44-125JXC

Overview

CY37064P44-125JXC from Cypress Semiconductor is a 64-macrocell In-System Reprogrammable (ISR™) CPLD in 44-pin TQFP package, operating at 5V supply with 125 MHz maximum frequency (8 ns propagation delay), PCI-compatible I/O, and JTAG-based reconfiguration. It delivers deterministic timing with no fanout/expander/PIM penalties and supports flexible clocking via four global synchronous clocks plus product-term clock.

For engineers reviewing the CY37064P44-125JXC datasheet, CY37064P44-125JXC pinout, CY37064P44-125JXC application, or CY37064P44-125JXC equivalent, key selection criteria include its fixed-pinout migration path across Ultra37000 densities, programmable bus-hold on all I/Os, 0–16 product terms per macrocell allocation, and 5V/3.3V I/O level compatibility with VCCO control.

Technical Context

The CY37064P44-125JXC implements a modular architecture with two logic blocks, each containing a 72×87 product term array, intelligent product term allocator, and 16 macrocells (mix of I/O and buried). All signals route through a fully global Programmable Interconnect Matrix (PIM) with 36 inputs per logic block and no route-dependent timing variation.

It supports four dedicated synchronous clocks (CLK0–CLK3) with programmable polarity per logic block, one asynchronous product-term clock (PTCLK), and dual-mode macrocell registers (D/T/latch) with asynchronous set/reset controlled by dedicated product terms. Bus-hold and slew-rate control are individually configurable per I/O pin.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC9572XL-10VQG44C and ATF1504AS-10QU44, CY37064P44-125JXC uniquely combines 125 MHz operation, PCI compliance, and deterministic timing-making it optimal for high-reliability 5V bus interface designs requiring field-upgradable logic without timing recalibration.

Availability

CY37064P44-125JXC is available at Aetrix Electronics and suitable for PCI add-in card development, legacy bus interface adapters, and field-upgradeable FPGA configuration managers requiring stable component supply across extended production lifecycles.

Supply support for CY37064P44-125JXC 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, and timing-predictable programmable logic for mission-critical glue logic, bus interface, and control applications where reprogrammability and design stability are essential.

FAQ

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

CY37064P44-125JXC is a 5V-supply device supporting both 5V and 3.3V I/O levels via VCCO configuration, while CY37064V-125JXC operates exclusively at 3.3V VCC and requires 3.3V VCCO. The "P" suffix denotes 5V operation; "V" denotes 3.3V operation. Both share identical 44-pin TQFP packaging and 125 MHz speed grade, but differ in supply voltage, power consumption, and ISR programming voltage requirements.

Does CY37064P44-125JXC support hot-swap or live insertion?

CY37064P44-125JXC supports 5V-tolerant I/Os when VCCO = 3.3V, but it is not rated for true hot-swap operation. Its I/Os lack internal current limiting or soft-start circuitry required for live insertion. For hot-swap applications, external protection circuitry (e.g., current-limiting resistors, TVS diodes) and careful power sequencing per JEDEC standards are mandatory.

Can CY37064P44-125JXC replace older CY37032 devices without PCB changes?

Yes-CY37064P44-125JXC uses the same 44-pin TQFP package and pinout as CY37032P44-125JXC, enabling direct drop-in replacement. All dedicated inputs, JTAG pins, power, and I/O assignments are identical. Firmware and JEDEC programming files remain compatible, and timing behavior is preserved due to the Ultra37000 family's consistent timing model across densities.

Is JTAG boundary scan supported on CY37064P44-125JXC?

Yes-CY37064P44-125JXC fully implements IEEE 1149.1 JTAG boundary scan. All I/O pins, dedicated inputs, and internal logic block outputs are accessible via TAP controller for interconnect testing, fault isolation, and in-system verification without requiring additional test points or probes.