Infineon Technologies CY37128P160-125AXI

Overview

CY37128P160-125AXI 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 128 I/O pins with programmable bus-hold, slew rate control, and four synchronous clocks per logic block. It is used in PCI-compliant interface glue logic, FPGA configuration management, and legacy bus bridging.

For engineers reviewing the CY37128P160-125AXI datasheet, CY37128P160-125AXI pinout, CY37128P160-125AXI application, or CY37128P160-125AXI equivalent, key selection criteria include macrocell count, I/O pin count, tPD/fMAX speed bin, JTAG-based ISR capability, and 5V/3.3V I/O tolerance with VCCO-selectable voltage levels.

Technical Context

The CY37128P160-125AXI implements a modular architecture with multiple logic blocks interconnected via a fully global Programmable Interconnect Matrix (PIM), eliminating route-dependent timing variations. Each logic block contains a 72×87 product term array, intelligent product term allocator, and 16 macrocells-supporting up to 16 product terms per macrocell with steering and sharing.

It features five dedicated input pins (four clock-capable), programmable asynchronous set/reset and output enable (OE) product terms per logic block, and flexible clocking with four global synchronous clocks (CLK0–CLK3) plus one product-term clock (PTCLK), all with polarity control. All I/Os support bus-hold and programmable fast/slow slew rate.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC95144XL-10TQ144I and ATF1508AS-10QU160, CY37128P160-125AXI uniquely combines 5V/3.3V I/O flexibility, per-pin bus-hold, and slew control in a 160-pin TQFP-making it optimal for mixed-voltage industrial backplanes where reliability and field update capability are critical.

Availability

CY37128P160-125AXI is available at Aetrix Electronics and suitable for PCI interface design, FPGA configuration management, and industrial backplane logic requiring stable component supply and long-term lifecycle support.

Supply support for CY37128P160-125AXI 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 USB/USB-C solutions.

The Ultra37000 CPLD family was designed to deliver high-density, pin-compatible, and timing-predictable logic for industrial control, communications infrastructure, and legacy system modernization-emphasizing ISR, mixed-voltage I/O, and simplified timing closure.

FAQ

What is the difference between CY37128P160-125AXI and CY37128V-125AXI?

CY37128P160-125AXI is a 5V-core device supporting both 3.3V and 5V I/O levels via VCCO pins, while CY37128V-125AXI is a 3.3V-core variant requiring 3.3V on all VCCO pins and offering lower power consumption. The 'P' suffix denotes 5V operation; the 'V' suffix indicates 3.3V operation. They share identical macrocell count, pinout, and JTAG functionality but differ in supply requirements and I/O voltage tolerance behavior.

Does CY37128P160-125AXI require external configuration memory?

No. CY37128P160-125AXI is nonvolatile and retains its configuration without external memory. It uses on-chip EEPROM cells to store logic definitions, enabling instant-on operation after power-up. Configuration is loaded directly from internal memory-no external PROM, flash, or FPGA configuration IC is needed.

Can CY37128P160-125AXI drive 5V TTL loads when VCCO = 3.3V?

Yes. When VCCO is set to 3.3V, outputs meet 3.3V JEDEC CMOS levels and remain 5V-tolerant on inputs-but output drive strength is rated for 3.3V logic families. Driving true 5V TTL loads (requiring ≥2.0V VIH and ≤0.8V VIL) may require external level-shifting or buffer circuits, as 3.3V outputs fall short of TTL input thresholds under worst-case conditions.

Is JTAG boundary scan supported on CY37128P160-125AXI?

Yes. CY37128P160-125AXI 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 such as Xilinx Impact, Altera Quartus Programmer, or third-party boundary scan tools.