Infineon Technologies CY37064P44-125AC

Overview

CY37064P44-125AC 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 both combinatorial and registered logic functions in embedded control and interface glue logic applications.

For engineers reviewing the CY37064P44-125AC datasheet, CY37064P44-125AC pinout, CY37064P44-125AC application, or CY37064P44-125AC equivalent, key selection criteria include macrocell count, I/O pin count (37 usable), timing bin (125 MHz), 5V/3.3V I/O flexibility via VCCO, and JTAG-based ISR capability for field updates without pinout or timing impact.

Technical Context

The CY37064P44-125AC implements the Ultra37000 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 route-dependent delays.

It supports five dedicated inputs-including four clock pins-with configurable polarity, product term clocking, asynchronous set/reset, and programmable slew rate per output. The device uses JTAG-compliant boundary scan for ISP and system-level test, meeting PCI Local Bus electrical and timing requirements.

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 interface and control logic applications.

Compared with XC9572XL-10VQG44C and ATF1504AS-10AU44, the CY37064P44-125AC uniquely combines 5V operation, PCI compliance, JTAG-based ISR, and deterministic timing-making it optimal for field-upgradable industrial and communications hardware where pinout stability and mixed-voltage interfacing are essential.

Availability

CY37064P44-125AC is available at Aetrix Electronics and suitable for industrial PLC expansion, PCI add-in card development, and automotive body control modules requiring stable component supply and long-term lifecycle support.

Supply support for CY37064P44-125AC 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 USB/USB-C solutions for industrial, automotive, and communications markets.

The Ultra37000 CPLD family was designed to deliver high-density, pin-stable, in-system reprogrammable logic for mission-critical glue logic, interface bridging, and control applications where timing predictability and field update capability are mandatory.

FAQ

What voltage levels does CY37064P44-125AC support on its I/O pins?

The device supports both 5V and 3.3V I/O levels via separate VCCO pins. When VCCO = 5V, outputs meet 5V TTL specifications; when VCCO = 3.3V, outputs comply with 3.3V JEDEC CMOS standards and remain 5V-tolerant. Core VCC must be 5V. This dual-voltage capability enables direct interfacing with mixed-voltage systems without external level shifters.

Does CY37064P44-125AC require an external programmer for configuration?

No. It is In-System Reprogrammable (ISR™) via its JTAG interface (TCK, TMS, TDI, TDO pins). Configuration data can be loaded directly into the on-chip EEPROM while the device is soldered on the target board, enabling field firmware updates and design iterations without device removal or socketing.

How many logic blocks and macrocells are implemented in this specific device?

CY37064P44-125AC contains two logic blocks, each with 32 macrocells, totaling 64 macrocells. Each logic block includes a 72×87 product term array, intelligent product term allocator, and dedicated resources including four synchronous clocks and asynchronous set/reset product terms-providing balanced density and routing efficiency for mid-complexity logic designs.

Is CY37064P44-125AC compliant with the PCI Local Bus specification?

Yes. It meets both the electrical and timing requirements of the PCI Local Bus specification (Revision 2.2), including DC parameters (VIH/VIL), AC timing (setup/hold, clock-to-out), and noise immunity. This allows direct integration into PCI add-in cards as target interface logic without additional bus interface ICs or timing compensation circuits.