Infineon Technologies CY37032P44-154JXI

Overview

CY37032P44-154JXI 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 with 154 MHz maximum frequency and 6 ns propagation delay. It features four synchronous clocks, five dedicated inputs (including four clock pins), programmable bus-hold on all I/Os, and JTAG-compliant ISR for field reconfiguration without pinout or timing changes. Used in legacy PCI interface logic, FPGA companion control, and industrial I/O expansion.

For engineers reviewing the CY37032P44-154JXI datasheet, CY37032P44-154JXI pinout, CY37032P44-154JXI application, or CY37032P44-154JXI equivalent, key selection criteria include its 5V/3.3V I/O tolerance, fixed 44-pin TQFP footprint across density variants, JTAG boundary-scan support, 154 MHz f_MAX, and programmable slew rate per output - critical for EMI-sensitive embedded control designs.

Technical Context

The CY37032P44-154JXI implements a two-logic-block Ultra37000 architecture with a global Programmable Interconnect Matrix (PIM) routing all I/O and macrocell feedback signals. Each block contains a 72×87 product term array, intelligent allocator assigning 0–16 product terms per macrocell, and 16 macrocells (mix of I/O and buried types).

It supports flexible clocking: four global synchronous clocks (CLK0–CLK3) with polarity control, plus one asynchronous product-term clock (PTCLK); all I/Os feature programmable bus-hold and slew-rate control (fast/slow); and timing is deterministic-no fanout, expander, or PIM routing penalties affect t_PD or f_MAX.

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 XC9536XL-10VQ44C and ATF1502AS-10PU, CY37032P44-154JXI delivers higher speed (154 MHz), deterministic timing (6 ns), and integrated bus-hold/slew control - making it uniquely suitable for PCI-compliant, noise-prone industrial control upgrades where pinout stability and field reprogrammability are mandatory.

Availability

CY37032P44-154JXI is available at Aetrix Electronics and suitable for PCI interface logic, industrial I/O expansion, FPGA companion control, and legacy system re-engineering requiring stable component supply and long-term lifecycle support.

Supply support for CY37032P44-154JXI 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-stable programmable logic for PCI-compliant systems and legacy digital upgrades - emphasizing in-system reprogrammability and deterministic timing over raw gate count.

FAQ

Is CY37032P44-154JXI compatible with 3.3V I/O buses?

Yes - the device uses separate V_CCO pins that can be connected to 3.3V, enabling JEDEC-standard 3.3V CMOS output levels while maintaining 5V core operation and full 5V tolerance on all I/Os. This allows direct interfacing with 3.3V microcontrollers or FPGAs without level shifters.

Does CY37032P44-154JXI require external programming hardware?

No - it features a fully compliant IEEE 1149.1 JTAG interface (TCK, TMS, TDI, TDO) that supports in-system reprogramming and boundary-scan testing using standard JTAG adapters. No dedicated programming voltage or external UV eraser is needed.

What is the purpose of the five dedicated input pins?

Four serve as configurable clock inputs (CLK0–CLK3) with polarity control; the fifth is a general-purpose dedicated input. All five bypass I/O cells and feed directly into the Programmable Interconnect Matrix (PIM), ensuring minimal skew and guaranteed timing for critical control signals.

Can unused I/O pins be left unconnected?

Yes - programmable bus-hold latches maintain the last driven logic state on floating I/Os, eliminating the need for external pull-up/down resistors. This simplifies prototyping and reduces BOM count, especially in systems with variable I/O configurations.