Infineon Technologies CY37064VP44-143AXC

Overview

CY37064VP44-143AXC from Cypress Semiconductor is a 64-macrocell In-System Reprogrammable (ISR™) Complex Programmable Logic Device (CPLD) in a 44-pin TQFP package, operating at 3.3V supply with 143 MHz maximum frequency and 8.5 ns propagation delay. It features four synchronous clocks, five dedicated inputs (including four clock pins), programmable bus-hold on all I/Os, and supports PCI-compliant 3.3V I/O with 5V tolerance. It is used in legacy industrial control logic replacement and FPGA configuration glue logic.

For engineers reviewing the CY37064VP44-143AXC datasheet, CY37064VP44-143AXC pinout, CY37064VP44-143AXC application, or CY37064VP44-143AXC equivalent, key selection criteria include its 3.3V operation with 5V-tolerant I/O, JTAG-based ISR capability, fixed timing model across design iterations, and compatibility with Warp® and third-party synthesis tools for rapid logic reconfiguration without pinout changes.

Technical Context

The CY37064VP44-143AXC 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-worst-case PIM delay is embedded in tPD = 8.5 ns.

It supports flexible clocking: four global synchronous clocks (CLK0–CLK3) with polarity control, plus one asynchronous product term clock (PTCLK); all macrocells support D/T/latch register modes with programmable async set/reset; bus-hold and slew-rate control are per-I/O configurable.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with LC4064V-75TN44C and ATF1504AS-10QU44, the CY37064VP44-143AXC uniquely combines JTAG-based ISR, 5V-tolerant I/O, bus-hold, and a guaranteed 8.5 ns timing model-making it the only option among the three suitable for retrofitting PCI-compliant industrial backplanes with zero hardware modification.

Availability

CY37064VP44-143AXC is available at Aetrix Electronics and suitable for industrial control logic replacement, legacy system glue logic, and FPGA configuration support requiring stable component supply and long-term obsolescence management.

Supply support for CY37064VP44-143AXC 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 and automotive markets.

The Ultra37000 CPLD family was designed to deliver high-density, pin-compatible, and timing-predictable logic replacement for legacy PAL/GAL devices-targeting applications where design iteration speed, field upgradability, and mixed-voltage interoperability are critical.

FAQ

Is CY37064VP44-143AXC compatible with 5V systems?

No-it is a 3.3V-core device requiring 3.3V VCC. However, all I/O pins are 5V-tolerant when VCCIO = 3.3V, enabling direct connection to 5V TTL or CMOS signals without level shifters. This tolerance is specified per JEDEC Std 8-6A and verified in the device's DC characteristics table.

Does CY37064VP44-143AXC support boundary-scan testing?

Yes-it implements full IEEE 1149.1 (JTAG) boundary-scan functionality, including EXTEST, SAMPLE/PRELOAD, and BYPASS instructions. The TAP controller supports scan-chain access to all I/O pins and internal logic block states for production test and debug.

Can the device be reprogrammed while soldered on the board?

Yes-In-System Reprogrammability (ISR™) is enabled via the JTAG interface (TDI, TDO, TCK, TMS, TLR). Reprogramming requires only a standard JTAG adapter and does not require device removal, power cycling, or changes to pin assignments or timing behavior.

What development tools support CY37064VP44-143AXC?

Cypress Warp® software (v9.3 and earlier) provides full synthesis, fitting, and programming support. Third-party tools including Mentor Graphics Precision RTL, Synopsys Synplify, and Aldec Active-HDL also support the Ultra37000 family via vendor-provided libraries and JEDEC JED files.