Infineon Technologies CY37064P100-125AXI

Overview

CY37064P100-125AXI from Cypress Semiconductor is a 64-macrocell In-System Reprogrammable (ISR™) Complex Programmable Logic Device (CPLD) in the Ultra37000 family, operating at 5V with 100-pin TQFP packaging. It delivers 125 MHz maximum frequency (f_MAX), 6 ns propagation delay (t_PD), and supports 64 I/O pins with programmable bus-hold, slew rate control, and four synchronous clocks - used for glue logic replacement, address decoding, and interface bridging in industrial control systems.

For engineers reviewing the CY37064P100-125AXI datasheet, CY37064P100-125AXI pinout, CY37064P100-125AXI application, or CY37064P100-125AXI equivalent, key selection considerations include its JTAG-based ISR capability, fixed pinout across speed bins, PCI-compatibility, 5V/3.3V I/O tolerance via VCCO configuration, and deterministic timing model eliminating fanout/expander delays.

Technical Context

The CY37064P100-125AXI implements a modular 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 timing penalties.

It features five dedicated inputs (four clock-capable), programmable asynchronous set/reset and OE product terms per logic block, product term clocking, and configurable clock polarity on all four synchronous clocks (CLK0–CLK3). Bus-hold and slew-rate control are implemented per I/O pin via configuration bits.

Key Specifications

Pinout & Package

Package: 100-lead Thin Quad Flat Package (TQFP), 14 mm × 14 mm, 0.5 mm pitch, RoHS-compliant and lead-free capable.

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, CY37064P100-125AXI uniquely combines PCI compliance, 5V/3.3V I/O flexibility via VCCO, dedicated clock pins, and integrated bus-hold - making it the only option among the three qualified for drop-in replacement in legacy PCI add-in cards and mixed-voltage industrial backplanes.

Availability

CY37064P100-125AXI is available at Aetrix Electronics and suitable for industrial automation, PCI-compliant data acquisition, and legacy bus interface applications requiring stable component supply and long-term lifecycle support.

Supply support for CY37064P100-125AXI 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 - specifically targeting replacement of TTL/SSI logic and interface bridging in systems requiring field-upgradable functionality and PCI compliance.

FAQ

What is the difference between CY37064P100-125AXI and CY37064V-125AXI?

CY37064P100-125AXI is a 5V-core device supporting both 5V and 3.3V I/O levels via VCCO configuration, while CY37064V-125AXI is a 3.3V-core device requiring 3.3V on all VCCO pins. The 'P' suffix denotes 5V operation; the 'V' suffix indicates 3.3V operation. They are not pin-compatible due to differing VCC/VCCO pin assignments and power sequencing requirements.

Does CY37064P100-125AXI require external pull-up resistors on unused I/O pins?

No. CY37064P100-125AXI includes user-programmable bus-hold circuitry on all I/O pins, which maintains the last driven logic state during high-impedance conditions. This eliminates the need for external pull-up or pull-down resistors, reducing BOM cost and PCB area - especially beneficial during prototyping and in bus-hold–sensitive applications like shared data buses.

Can CY37064P100-125AXI be programmed in-system after soldering to the PCB?

Yes. It supports full IEEE 1149.1 JTAG-based In-System Reprogrammability (ISR™), allowing configuration bitstream updates directly through TCK/TMS/TDI/TDO pins without removing the device. This enables field firmware revisions, design iterations, and manufacturing test programming - all while preserving pinout and timing behavior across reprogramming cycles.

Is the 125 MHz f_MAX rating guaranteed across all temperature and voltage conditions?

No. The 125 MHz maximum frequency applies under commercial temperature range (0°C to 70°C) and nominal 5V ±5% supply. At extended temperature (–40°C to +85°C) or reduced VCC (4.5V), the guaranteed f_MAX drops to 100 MHz per the speed bin table in datasheet Rev. *E. Timing analysis must use device-specific .twr files generated by Warp software for final design validation.