Infineon Technologies CY37128P160-100AXC

Overview

CY37128P160-100AXC from Cypress Semiconductor is a 128-macrocell In-System Reprogrammable (ISR™) Complex Programmable Logic Device (CPLD) in the Ultra37000 family, operating at 5V with 160-pin TQFP packaging. It delivers 6.5 ns propagation delay (tPD), 167 MHz maximum frequency (fMAX), and supports up to 128 I/O pins with four dedicated clock inputs and programmable bus-hold on all I/Os. Used in PCI-compliant interface logic, legacy bus bridging, and control plane state machines where pinout stability across design iterations is critical.

For engineers reviewing the CY37128P160-100AXC datasheet, CY37128P160-100AXC pinout, CY37128P160-100AXC application, or CY37128P160-100AXC equivalent, key selection criteria include its fixed-pinout ISR capability, JTAG-based reprogramming without timing or pinout changes, 5V/3.3V I/O flexibility via VCCO configuration, and deterministic timing model eliminating fanout, expander, and PIM routing delays.

Technical Context

The CY37128P160-100AXC implements a modular architecture with multiple logic blocks interconnected by a fully global Programmable Interconnect Matrix (PIM), where all inputs-including macrocell feedbacks and device pins-pass through the PIM with no route-dependent delay. Each logic block contains a 72×87 product term array, intelligent allocator for 0–16 product terms per macrocell, and 16 macrocells supporting combinatorial, registered, or latched configurations.

It features four synchronous clocks (CLK0–CLK3) plus one asynchronous product-term clock (PTCLK), programmable clock polarity per logic block, and dual-mode macrocells (I/O or buried) with configurable D/T/latch registers, asynchronous set/reset, and polarity-controlled output buffers. Bus-hold and slew-rate control are individually programmable per I/O pin.

Key Specifications

Pinout & Package

CY37128P160-100AXC is housed in a 160-lead Thin Quad Flat Package (TQFP) with 0.5 mm pitch, 24 × 24 mm body size, and exposed thermal pad. Pin assignment follows Cypress's consistent Ultra37000 family layout, enabling migration across densities without PCB redesign.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC95144XL-10TQ144I and EPM3128ATC144-10N, CY37128P160-100AXC uniquely supports 5V/3.3V mixed-bus interfacing via VCCO, guarantees pinout stability across design iterations, and provides deterministic timing unaffected by logic density - critical for PCI and legacy bus integration where signal integrity and revision control are non-negotiable.

Availability

CY37128P160-100AXC is available at Aetrix Electronics and suitable for PCI interface logic, legacy bus bridge control, and embedded bootloader sequencing requiring stable component supply, long-term lifecycle support, and guaranteed pinout consistency across engineering changes.

Supply support for CY37128P160-100AXC 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 mixed-signal solutions for industrial, automotive, and communications markets.

The Ultra37000 CPLD family was engineered to deliver high-density, pin-stable, and timing-predictable programmable logic for mission-critical control plane and interface applications where design iteration speed and hardware longevity are essential.

FAQ

What voltage levels does CY37128P160-100AXC support on its I/O pins?

CY37128P160-100AXC supports both 3.3V and 5V I/O signaling through dedicated VCCO pins. When VCCO is tied to 5V, outputs meet 5V TTL levels; when tied to 3.3V, outputs comply with 3.3V JEDEC CMOS standards and remain 5V-tolerant. Core logic operates at 5V VCC, and ISR programming requires 5V.

Does CY37128P160-100AXC require external configuration memory?

No. CY37128P160-100AXC contains on-chip non-volatile EEPROM for configuration storage. It powers up in user mode immediately after power stabilization, with no external PROM or flash memory required. Configuration is retained indefinitely and reprogrammable via JTAG without power cycling.

Can CY37128P160-100AXC replace older 22V10-style PALs in existing designs?

Yes - with appropriate HDL translation and pin mapping. Its 128 macrocells, flexible clocking, and 160-pin TQFP footprint provide substantial headroom over 24-pin 22V10 devices. The deterministic timing model and fixed pinout simplify migration, and bus-hold eliminates need for external pull-ups previously used with PALs.

Is JTAG boundary scan supported on CY37128P160-100AXC?

Yes. CY37128P160-100AXC fully complies with IEEE 1149.1 (JTAG) for both boundary-scan testing and In-System Reprogrammability. TCK, TMS, TDI, and TDO pins are dedicated and electrically compatible with standard JTAG debuggers and programmers without additional circuitry.