Infineon Technologies CY37032P44-125AC

Overview

CY37032P44-125AC 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 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 both combinatorial and registered logic functions in embedded control and interface glue logic applications.

For engineers reviewing the CY37032P44-125AC datasheet, CY37032P44-125AC pinout, CY37032P44-125AC application, or CY37032P44-125AC equivalent, key selection criteria include its fixed-pinout migration path across Ultra37000 densities, zero-delay PIM routing, product-term steering (0–16 per macrocell), 5V/3.3V I/O tolerance via VCCO configuration, and JTAG-compliant ISR for field updates without timing or pinout impact.

Technical Context

The CY37032P44-125AC implements a two-block Ultra37000 architecture with a 36-input Programmable Interconnect Matrix (PIM) feeding two logic blocks, each containing a 72×87 product term array and 16 macrocells. All signals-including I/O pins and macrocell feedbacks-pass through the PIM, with worst-case delays fully incorporated into timing specs.

Each logic block supports four global synchronous clocks (CLK0–CLK3), one asynchronous product-term clock (PTCLK), programmable clock polarity, and independent high-speed/low-power mode selection. The intelligent product term allocator enables per-macrocell assignment of 0–16 product terms and sharing across groups of four macrocells without speed penalty.

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 XC9536XL-10VQ44I and ATF1502AS-10AU44, the CY37032P44-125AC uniquely delivers 5V/3.3V I/O tolerance, four dedicated clock pins, and PCI compliance in the same 44-pin TQFP - making it the only option for retrofitting legacy 5V systems with field-upgradable logic without board redesign.

Availability

CY37032P44-125AC is available at Aetrix Electronics and suitable for PCI add-in card manufacturing, industrial bus interface adapters, and field-upgradeable firmware sequencers requiring stable component supply across extended product lifecycles.

Supply support for CY37032P44-125AC 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 system-level glue logic, bus interfacing, and control sequencing - bridging the gap between simple PLDs and FPGAs.

FAQ

What is the difference between CY37032P44-125AC and CY37032V-125AC?

The CY37032P44-125AC is a 5V-core device supporting both 5V and 3.3V I/O via VCCO configuration, while the CY37032V-125AC is a 3.3V-core variant requiring 3.3V on all VCCO pins and offering lower power consumption. The 'P' suffix denotes plastic TQFP packaging and 5V operation; the 'V' suffix indicates 3.3V core voltage. Both share identical pinout and JTAG functionality.

Does CY37032P44-125AC require external pull-up resistors on JTAG pins?

No. The device has internal weak pull-ups on TMS and TCK pins, and TDI/TDO are driven actively during JTAG operations. External pull-ups are unnecessary and may interfere with signal integrity; Cypress's recommended configuration uses only series termination resistors for noise suppression on long traces.

Can CY37032P44-125AC replace a 22V10 PLD in existing designs?

Yes - with appropriate HDL translation and pin mapping. Its 32 macrocells, 32 I/Os, and compatible architecture provide direct functional expansion over the 22V10 (10 macrocells). The fixed pinout across densities and ISR capability allow drop-in replacement where board space permits the 44-pin TQFP footprint and additional logic capacity is needed.

Is bus-hold enabled by default on power-up?

No. Bus-hold is disabled by default at power-on reset. It must be explicitly enabled per I/O pin using the device's fuse map or programming software (e.g., Warp v9.0 or third-party tools). Once programmed, bus-hold remains active until reconfigured, providing latch-like behavior during tri-state conditions without external components.