Infineon Technologies CY37032P44-125JXC

Overview

CY37032P44-125JXC from Cypress Semiconductor is a 32-macrocell In-System Reprogrammable (ISR™) Complex Programmable Logic Device (CPLD) in a 44-pin TQFP package, operating at 5V supply with 3.3V/5V I/O tolerance, 125 MHz maximum frequency (f_MAX), and 6 ns propagation delay (t_PD). It features four synchronous clocks, five dedicated inputs (including four clock pins), and JTAG-compliant reprogramming for field updates without pinout or timing changes - used in PCI-compliant interface glue logic and legacy bus bridging.

For engineers reviewing the CY37032P44-125JXC datasheet, CY37032P44-125JXC pinout, CY37032P44-125JXC application, or CY37032P44-125JXC equivalent, key selection criteria include its fixed 44-pin TQFP footprint across Ultra37000 densities, programmable bus-hold on all I/Os, product-term steering/sharing capability, and support for both combinatorial and registered logic paths with configurable clock polarity.

Technical Context

The CY37032P44-125JXC implements a single logic block architecture with a 72×87 product term array delivering up to 16 product terms per macrocell, intelligent product term allocator, and 36 PIM inputs feeding 16 macrocells. Its Programmable Interconnect Matrix (PIM) eliminates route-dependent delays by incorporating worst-case routing latency into published t_PD and f_MAX specs.

It supports four global synchronous clocks (CLK0–CLK3) plus one asynchronous product-term clock (PTCLK), each with programmable polarity; all 32 I/Os feature programmable slew rate (fast/slow) and bus-hold capability. The device uses JTAG boundary-scan for ISR programming and complies electrically with PCI Local Bus specification.

Key Specifications

Pinout & Package

Package: 44-pin Thin Quad Flat Package (TQFP), 10 mm × 10 mm, 0.8 mm pitch, lead-free (JXC suffix), surface-mount.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC9536XL-10VQ44C and ispMACH 4032V-100QP44, CY37032P44-125JXC uniquely combines PCI compliance, 3.3V/5V I/O tolerance, JTAG-based ISR, and deterministic timing - making it optimal for upgradeable industrial and telecom interface designs requiring long-term supply stability and mixed-voltage interoperability.

Availability

CY37032P44-125JXC is available at Aetrix Electronics and suitable for PCI add-in card development, industrial I/O module production, and FPGA configuration management systems requiring stable component supply across extended product lifecycles.

Supply support for CY37032P44-125JXC 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 USB/USB-C 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 system-level interface consolidation - targeting PCI, ISA, and custom bus bridging in cost-sensitive, long-lifecycle applications.

FAQ

Is CY37032P44-125JXC compatible with 3.3V I/O signaling?

Yes. When V_CCO pins are connected to 3.3V, the device outputs meet 3.3V JEDEC standard CMOS levels and remain 5V-tolerant on inputs. This dual-voltage capability enables direct interfacing with both 3.3V microcontrollers and legacy 5V peripherals without level shifters.

Does CY37032P44-125JXC require external pull-up resistors on unused I/O pins?

No. All I/O pins feature user-programmable bus-hold circuitry that actively retains the last driven logic state during high-impedance conditions. This eliminates external pull-ups, reduces board space, and improves noise immunity in bus-interface applications.

Can CY37032P44-125JXC be reprogrammed in the field without removing it from the PCB?

Yes. It supports full In-System Reprogrammability (ISR™) via its IEEE 1149.1-compliant JTAG interface (TCK/TMS/TDI/TDO). Field updates preserve pinout and timing behavior, enabling logic fixes and feature enhancements without hardware modification.

What clocking options does CY37032P44-125JXC provide for registered logic paths?

Each macrocell supports four global synchronous clocks (CLK0–CLK3) and one asynchronous product-term clock (PTCLK), all with programmable polarity. Clock selection is per-macrocell, allowing mixed-edge-triggered registers and asynchronous event capture within the same logic block.