Infineon Technologies CY37128VP160-125AXC

Overview

CY37128VP160-125AXC from Cypress Semiconductor is a 3.3V In-System Reprogrammable (ISR™) Complex Programmable Logic Device (CPLD) in the Ultra37000 family, featuring 128 macrocells, 160 I/O pins, and a 125 MHz maximum operating frequency (f_MAX). It implements a programmable interconnect matrix (PIM) architecture with four synchronous clocks per logic block, product-term clocking, and programmable bus-hold on all I/Os. It is used in PCI-compliant interface glue logic, FPGA configuration management, and legacy bus bridging.

For engineers reviewing the CY37128VP160-125AXC datasheet, CY37128VP160-125AXC pinout, CY37128VP160-125AXC application, or CY37128VP160-125AXC equivalent, key selection criteria include its 125 MHz speed bin, 160-pin TQFP package, 3.3V V_CC operation with 5V-tolerant I/Os, JTAG-based ISR capability, and configurable slew rate per output.

Technical Context

The device integrates eight logic blocks, each with a 72×87 product term array delivering up to 80 general-purpose product terms, four OE product terms, two asynchronous set/reset product terms, and one product term clock. All macrocells support D/T/latch configurations with programmable polarity and clock edge selection.

Its PIM provides 36 dedicated inputs per logic block (plus complements), eliminating route-dependent timing delays; propagation through the PIM is fully incorporated into t_PD = 10 ns (max) and f_MAX = 125 MHz specifications. Clocking includes four global synchronous clocks (CLK0–CLK3), one asynchronous product term clock (PTCLK), and per-block clock polarity control.

Key Specifications

Pinout & Package

Package: 160-pin Thin Quad Flat Package (TQFP), 24 mm × 24 mm body, 0.5 mm lead pitch, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LC4128V-75TN100C and ATF1504AS-10QU100, CY37128VP160-125AXC uniquely combines 125 MHz performance, 5V-tolerant I/O with integrated bus-hold, JTAG ISR with timing stability, and PCI compliance-making it optimal for industrial bus bridging and FPGA configuration where signal integrity and field update reliability are critical.

Availability

CY37128VP160-125AXC is available at Aetrix Electronics and suitable for PCI interface design, FPGA configuration management, and industrial bus bridging requiring stable component supply, long-lifecycle support, and consistent pinout across voltage variants.

Supply support for CY37128VP160-125AXC 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-targeting replacement of TTL/PLD glue logic and enabling rapid prototyping in embedded control systems.

FAQ

What is the difference between CY37128VP160-125AXC and CY37128V-125AXC?

The "P160" suffix denotes the 160-pin TQFP package; CY37128V-125AXC is a generic part number without package specification. The full orderable part CY37128VP160-125AXC confirms 160-pin TQFP, 3.3V operation, 125 MHz speed grade, and commercial temperature range (0°C to 70°C). Package-specific suffixes are mandatory for ordering and footprint validation.

Does CY37128VP160-125AXC support hot-swap or live insertion?

No. While its I/Os are 5V-tolerant and feature bus-hold, the device lacks explicit hot-swap circuitry such as power sequencing control, soft-start, or current limiting. It must be powered and initialized before signal assertion. Live insertion requires external protection circuitry per system-level requirements.

Can the JTAG port be used for both programming and real-time debugging?

The JTAG port supports IEEE 1149.1 boundary-scan testing and ISR programming, but does not provide real-time visibility into internal macrocell states or logic analyzer-style debugging. Debugging requires external logic analyzers probing I/O pins or embedding test logic in the HDL design-JTAG access is limited to configuration and scan-chain operations.

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

No. Bus-hold is disabled by default at power-on reset. It must be explicitly enabled per I/O pin using the device's fuse map or programming software (e.g., Warp v9.0 or third-party tools). Enabling bus-hold increases static current slightly (~10 µA per pin) but eliminates need for external pull resistors on unused or tri-stated lines.