Infineon Technologies CY37064P100-125AXC

Overview

CY37064P100-125AXC from Cypress Semiconductor is a 64-macrocell In-System Reprogrammable (ISR™) Complex Programmable Logic Device (CPLD) in a 100-pin TQFP package, operating at 5V with 125 MHz maximum frequency (tPD = 12.5 ns), supporting PCI-compliant I/O and programmable bus-hold on all pins for robust system interfacing.

For engineers reviewing the CY37064P100-125AXC datasheet, CY37064P100-125AXC pinout, CY37064P100-125AXC application, or CY37064P100-125AXC equivalent, key selection considerations include its fixed-pinout migration path across Ultra37000 densities, JTAG-based ISR capability without timing or pinout disruption, 4 synchronous clocks per logic block, and 0–16 product-term allocation per macrocell.

Technical Context

The CY37064P100-125AXC implements a modular architecture with two logic blocks, each containing a 72×87 product term array, intelligent product term allocator, and 16 macrocells - delivering 64 total macrocells with up to 64 user I/Os in the 100-pin TQFP variant. Its Programmable Interconnect Matrix (PIM) provides 36 global inputs per logic block with no route-dependent delays.

It supports four dedicated synchronous clocks (CLK0–CLK3) plus one asynchronous product-term clock (PTCLK), configurable polarity per clock, and independent macrocell-level clock enable, reset, and output-enable control via dedicated product terms - enabling precise timing control in high-speed digital glue logic and state-machine implementations.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flat Package (TQFP), 14 mm × 14 mm, 0.5 mm pitch, RoHS-compliant lead-free option available (AXC suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC9572XL-10VQG44C and ATF1504AS-10AU100, the CY37064P100-125AXC uniquely combines 5V operation, PCI compliance, JTAG-based ISR, and fixed-pinout scalability - making it irreplaceable in legacy industrial and telecom platforms requiring field logic updates without hardware change.

Availability

CY37064P100-125AXC is available at Aetrix Electronics and suitable for PCI bus interface logic, embedded controller peripheral bridging, and legacy system glue logic requiring stable component supply across extended product lifecycles.

Supply support for CY37064P100-125AXC 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, in-system reprogrammable logic with deterministic timing - specifically targeting replacement of obsolete PAL/GAL devices and PCI-compliant system integration.

FAQ

What programming voltage is required for CY37064P100-125AXC?

The CY37064P100-125AXC requires 5V for JTAG-based In-System Reprogrammability (ISR). Unlike 3.3V CPLDs, it does not support 3.3V programming - VCC must be stabilized at 5.0V ±5% during configuration, and VCCO must match the target I/O voltage (3.3V or 5V) for correct output levels.

Does CY37064P100-125AXC support hot-swap or live-insertion?

No, CY37064P100-125AXC is not rated for hot-swap operation. Its I/Os lack powered-off protection circuitry, and applying signals before VCC ramp-up may cause latch-up. Power sequencing must follow Cypress-recommended order: GND → VCC → VCCO → signals, with all supplies stable before JTAG activity.

Can CY37064P100-125AXC replace a CY37064P100-100AXC in the same PCB?

Yes - the -125AXC and -100AXC share identical pinout, package, and DC specifications; only AC timing differs (12.5 ns vs. 10 ns tPD). The -125AXC operates at lower maximum frequency (125 MHz vs. 100 MHz fMAX), but is fully backward-compatible and can substitute in any design meeting its timing margin.

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

No - bus-hold is disabled by default after power-on or JTAG configuration. It must be explicitly enabled per I/O pin using Cypress' Warp or third-party HDL tools during JEDEC file generation. Default high-impedance state prevents unintended signal contention during boot.