Infineon Technologies CY37128VP100-83AXIT

Overview

CY37128VP100-83AXIT from Cypress Semiconductor is a 128-macrocell, 3.3V In-System Reprogrammable (ISR™) Complex Programmable Logic Device (CPLD) in a 100-pin TQFP package. It features four synchronous clocks, programmable bus-hold on all I/Os, 5V-tolerant I/Os, and supports up to 128 user I/O pins with 69 usable I/Os in this package variant. It delivers 125 MHz maximum operating frequency (f_MAX) and 10 ns propagation delay (t_PD), targeting PCI-compliant interface logic and board-level glue logic replacement.

For engineers reviewing the CY37128VP100-83AXIT datasheet, CY37128VP100-83AXIT pinout, CY37128VP100-83AXIT application, or CY37128VP100-83AXIT equivalent, key selection criteria include its 3.3V core supply with 5V-tolerant I/Os, JTAG-based ISR capability preserving pinout and timing across design iterations, product term steering/sharing architecture, and programmable slew rate for EMI control.

Technical Context

The CY37128VP100-83AXIT implements the Ultra37000 CPLD architecture with a Programmable Interconnect Matrix (PIM) distributing 36 signals per logic block and eliminating route-dependent timing penalties. Each of its eight logic blocks contains a 72 × 87 product term array, intelligent allocator supporting 0–16 product terms per macrocell, and 16 macrocells-mix of I/O and buried types.

It supports flexible clocking via four global synchronous clocks (CLK0–CLK3) plus one asynchronous product term clock (PTCLK), all with programmable polarity. All I/Os feature configurable bus-hold and slew rate (fast/slow), and dedicated input/clock pins enable direct clock distribution without consuming macrocell resources.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flat Pack (TQFP), 14 × 14 mm body, 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 glue logic applications.

Compared with XC95144XL-10TQ100I and EPM3128ATC100-10N, CY37128VP100-83AXIT uniquely combines 5V-tolerant I/Os, per-pin bus-hold, and programmable slew in a JTAG-reprogrammable 128-macrocell CPLD - critical for robust, field-upgradable industrial interfaces.

Availability

CY37128VP100-83AXIT is available at Aetrix Electronics and suitable for PCI interface logic, legacy bus bridging, and FPGA configuration management requiring stable component supply across long-lifecycle industrial programs.

Supply support for CY37128VP100-83AXIT 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 for system-level glue logic, bus interface, and control plane functions - emphasizing in-system reprogrammability and mixed-voltage interoperability.

FAQ

What is the difference between CY37128VP100-83AXIT and CY37128V-100AXI?

CY37128VP100-83AXIT is the 100-pin TQFP variant with -83 speed grade (10 ns t_PD, 125 MHz f_MAX) and industrial temperature range (–40°C to +85°C). The suffix "P" denotes Pb-free packaging, and "T" indicates tape-and-reel packaging. CY37128V-100AXI lacks the "P" and "T", indicating standard leaded packaging and tray delivery - otherwise functionally identical.

Can CY37128VP100-83AXIT operate with 5V I/Os while using a 3.3V core supply?

Yes. The device uses separate V_CC (3.3V core) and V_CCO (I/O supply) pins. Connecting V_CCO to 5V enables 5V-tolerant outputs and inputs, meeting JEDEC 5V TTL levels. All I/Os remain functional and 5V-safe even when V_CCO = 5V and V_CC = 3.3V - no level shifters required.

Does CY37128VP100-83AXIT support boundary scan testing?

Yes. It fully complies with IEEE 1149.1 (JTAG) for boundary scan testing. The TCK, TMS, TDI, and TDO pins implement mandatory boundary-scan instructions (SAMPLE/PRELOAD, EXTEST, INTEST), enabling automated PCB test and interconnect verification without physical probe access.

How does the product term sharing mechanism affect timing predictability?

Product term sharing has zero impact on timing because all worst-case sharing configurations were incorporated into the published timing specifications. The PIM routing and logic block delays include maximum sharing overhead, so t_PD and f_MAX values remain guaranteed regardless of whether product terms are shared or steered - no timing recalculation is needed after synthesis.