Infineon Technologies CY37064VP100-100AXC

Overview

CY37064VP100-100AXC from Cypress Semiconductor is a 64-macrocell In-System Reprogrammable (ISR™) Complex Programmable Logic Device (CPLD) in the Ultra37000 family, operating at 3.3V with 100-pin TQFP package and 69 I/O pins. It supports JTAG-based reconfiguration without pinout or timing changes, features four synchronous clocks per logic block, programmable bus-hold on all I/Os, and delivers 143 MHz maximum frequency (f_MAX) with 8.5 ns propagation delay (t_PD). It is used in PCI-compliant interface logic, FPGA configuration glue logic, and legacy bus protocol translation.

For engineers reviewing the CY37064VP100-100AXC datasheet, CY37064VP100-100AXC pinout, CY37064VP100-100AXC application, or CY37064VP100-100AXC equivalent, key selection criteria include its 3.3V operation with 5V-tolerant I/Os, ISR capability via JTAG, flexible product-term allocation (0–16 terms/macrocell), programmable slew rate, and dedicated input/clock pins for synchronous and asynchronous control paths.

Technical Context

The CY37064VP100-100AXC implements a multi-block CPLD architecture with two logic blocks, each containing 32 macrocells, a 72×87 product term array, and an intelligent product term allocator. All 64 macrocells are distributed across two logic blocks, sharing a global Programmable Interconnect Matrix (PIM) that routes 36 inputs per block plus complements - eliminating route-dependent delays.

It supports five dedicated input pins (four clock-capable), four global synchronous clocks (CLK0–CLK3) with polarity control per block, one asynchronous product-term clock (PTCLK), and programmable bus-hold on all 69 I/Os. Its timing model excludes fanout, expander, or PIM routing penalties - all worst-case delays are embedded in t_PD = 8.5 ns and f_MAX = 143 MHz specifications.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC9572XL-10VQG64C and ATF1502AS-10AU44, CY37064VP100-100AXC uniquely combines 4 dedicated clocks, product-term clocking, bus-hold on all I/Os, and deterministic 8.5 ns timing - making it optimal for PCI-compliant and mixed-voltage industrial control glue logic where signal integrity and reprogrammability are non-negotiable.

Availability

CY37064VP100-100AXC is available at Aetrix Electronics and suitable for PCI add-in card development, FPGA configuration management, and industrial I/O expansion requiring stable component supply, long-term lifecycle assurance, and JTAG-field-upgradable logic.

Supply support for CY37064VP100-100AXC 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, with headquarters in San Jose, California.

The Ultra37000 CPLD family was designed to deliver high-density, pin-compatible, and timing-predictable programmable logic for PCI-compliant systems, legacy bus interfacing, and FPGA companion logic - emphasizing ISR, low-power operation, and robust I/O drive.

FAQ

Is CY37064VP100-100AXC compatible with 5V PCI bus signaling?

Yes. Although it operates at 3.3V V_CC, all I/O pins are 5V-tolerant when V_CCO = 3.3V, meeting PCI Local Bus Rev. 2.2 input voltage thresholds (VIH ≥ 2.0V, VIL ≤ 0.8V) and output drive strength requirements. No level-shifting circuitry is required for direct PCI slot interfacing.

Does this device support in-system programming without removing it from the PCB?

Yes. CY37064VP100-100AXC implements full IEEE 1149.1 JTAG boundary-scan and ISR functionality via TCK/TMS/TDI/TDO pins. Reprogramming can be performed in-circuit using standard JTAG adapters, preserving pin assignments and system timing - no socket or rework needed.

What is the role of the PTCLK pin, and how does it differ from CLK0–CLK3?

PTCLK is an asynchronous product-term clock derived from internal logic equations, enabling event-triggered register updates independent of global clocks. Unlike CLK0–CLK3 - which are synchronous, externally driven, and polarity-programmable - PTCLK allows dynamic clock enable/disable based on combinational logic conditions, supporting complex state transitions.

Can unused I/O pins be left unconnected without causing floating inputs?

Yes. All I/O pins feature user-programmable bus-hold circuitry - a weak latch that retains the last logic state when the pin is tri-stated. This eliminates the need for external pull-up/down resistors, reduces board space and noise, and is especially valuable during prototyping and in systems with dynamic pin reuse.