Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Embedded > CPLDs (Complex Programmable Logic Devices)

Infineon Technologies CY37256P160-83AXC

Name: CY37256P160-83AXC
Brand: Infineon Technologies
SKU: CY37256P160-83AXC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: CY37256P160-83AXC

Manufacturer:: Infineon Technologies

Category:: CPLDs (Complex Programmable Logic Devices)

Package:: 160-LQFP

Datasheet:: CY37256P160-83AXC.pdf

Description:: IC CPLD 256MC 15NS 160TQFP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,342

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

CY37256P160-83AXC from Cypress Semiconductor is a 5V In-System Reprogrammable (ISR™) Complex Programmable Logic Device (CPLD) in the Ultra37000 family, featuring 256 macrocells, 160 I/O pins, and a 83 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 - deployed in high-reliability industrial control and legacy PCI bus interface systems.

For engineers reviewing the CY37256P160-83AXC datasheet, CY37256P160-83AXC pinout, CY37256P160-83AXC application, or CY37256P160-83AXC equivalent, key selection criteria include its fixed-pinout migration path across densities, JTAG-based ISR capability without timing/pinout disruption, 5V-tolerant 3.3V/5V I/O flexibility, and deterministic timing model eliminating fanout/expander delays.

Technical Context

The CY37256P160-83AXC integrates eight logic blocks, each with a 72×87 product term array, intelligent product term allocator (0–16 terms per macrocell), and 16 macrocells (mix of I/O and buried). All inputs route through a global Programmable Interconnect Matrix (PIM) with no route-dependent delay - worst-case PIM propagation is fully embedded in t_PD = 7.5 ns.

It supports four dedicated synchronous clocks (CLK0–CLK3) plus one asynchronous product-term clock (PTCLK), configurable polarity per clock, and independent OE, set, and reset product terms per logic block. Bus-hold and slew-rate control are programmable per I/O pin, and all I/Os are 5V-tolerant regardless of V_CCO setting (3.3V or 5V).

Key Specifications

Parameter	Value and Actual Design Meaning
Macrocells	256 total, distributed across eight logic blocks - enables large state machines or multi-function glue logic without external logic.
I/O Pins	160 user-programmable I/Os - supports wide parallel buses (e.g., PCI Local Bus) and high-pin-count system interfaces.
Propagation Delay (t_PD)	7.5 ns - guaranteed worst-case path delay includes PIM routing; no additional penalty for full 16-product-term usage or steering.
Max Frequency (f_MAX)	154 MHz - derived from t_PD; enables synchronous operation up to 154 MHz with zero hold-time violation risk.
Supply Voltage	5.0 V ±10% V_CC, with separate V_CCO pins supporting either 5V TTL or 3.3V JEDEC CMOS output levels - allows mixed-voltage board interfacing.
JTAG Interface	IEEE 1149.1-compliant - enables in-system reprogramming, boundary-scan testing, and design iteration without PCB rework.
Bus-Hold	Programmable per I/O pin - eliminates need for external pull-ups in floating-bus scenarios (e.g., shared address/data lines during tri-state).

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
TCK, TMS, TDI, TDO	JTAG Test Access Port	Enable IEEE 1149.1 boundary scan and ISR programming; TDO is open-drain, others are CMOS-compatible inputs/outputs.
CLK0–CLK3	Dedicated Synchronous Clock Inputs	Four globally distributed clocks per logic block; each supports programmable polarity for rising/falling-edge registration.
PTCLK	Asynchronous Product-Term Clock Input	Enables event-driven clocking independent of global clocks; sourced from local product term equation.
V_CC	Core Power Supply	5.0 V ±10% supply for internal logic; decoupling required within 1 cm of pin per Cypress layout guidelines.
V_CCO	I/O Output Voltage Reference	Configures output voltage level: 5V for TTL compatibility or 3.3V for low-power JEDEC CMOS; all I/Os remain 5V-tolerant.
GND	Ground Reference	Multiple dedicated ground pins (pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160)

Key Features

Feature	Design Value
In-System Reprogrammable (ISR™) via JTAG	Enables field firmware updates and logic revisions without device removal; preserves pinout and timing across reconfigurations.
Fixed Pinout Across Densities	Same 160-pin TQFP footprint used for CY37128, CY37192, CY37256, CY37384 - simplifies hardware scalability and BOM consolidation.
Intelligent Product Term Allocator	Dynamically assigns 0–16 product terms per macrocell and shares terms across local groups - maximizes logic utilization without speed penalty.
Programmable Slew Rate Control	Per-pin fast/slow edge selection - reduces EMI in noise-sensitive environments while retaining performance where needed.
5V-Tolerant I/O with Dual-V_CCO	Supports 3.3V or 5V output drive while accepting 5V inputs - eliminates level shifters in mixed-voltage backplanes and legacy PCI designs.

Applications

PCI Bus Interface

Industrial PLC I/O Expansion

Use Scenario: Glue logic between x86 host processor and PCI peripheral cards in industrial automation controllers.

IC Role / Device Role / Timing Role: CPLD implements address decoding, burst transfer control, and PCI timing compliance (setup/hold, turnaround).

Use Value: JTAG reprogrammability allows late-stage protocol tweaks without board respin; 5V-tolerant I/O interfaces directly with legacy 5V PCI slots.

Use Scenario: Configurable digital I/O expansion module for programmable logic controllers handling sensor inputs and actuator outputs.

IC Role / Device Role / Timing Role: Implements custom state machines for input filtering, pulse-width modulation generation, and watchdog supervision.

Use Value: 160 I/Os support dense modular I/O; bus-hold prevents floating inputs during hot-swap; ISR enables remote firmware updates.

Legacy System Emulation

Test Equipment Pattern Generator

Use Scenario: Replacement for obsolete PAL/GAL devices in avionics maintenance test sets requiring long-lifecycle support.

IC Role / Device Role / Timing Role: Emulates multiple legacy logic devices using single CPLD - replicates timing-critical combinatorial paths.

Use Value: Deterministic 7.5 ns t_PD ensures cycle-accurate emulation; fixed pinout maintains backward compatibility with existing PCBs.

Use Scenario: High-speed digital pattern generator in automated test equipment generating synchronized stimulus waveforms.

IC Role / Device Role / Timing Role: Generates multi-channel, phase-aligned test vectors using internal registers clocked by PTCLK and CLK0–CLK3.

Use Value: Four independent synchronous clocks + product-term clock enable complex multi-phase waveform synthesis without external clock dividers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
XC95288XL-10TQ144I	288 macrocells, 144-pin TQFP, 3.3V core, 5V-tolerant I/O, f_MAX = 100 MHz, t_PD = 10 ns	Larger macrocell count but lower speed grade and fewer I/Os (117 vs. 160); lacks dedicated PTCLK and bus-hold	Select when migrating to Xilinx toolchain and requiring higher density at cost of timing margin and I/O count.
ATF1508AS-15AU100	512 macrocells, 100-pin TQFP, 5V-only, f_MAX = 125 MHz, t_PD = 15 ns, JTAG ISR supported	Higher macrocell count but significantly slower timing (15 ns vs. 7.5 ns); no V_CCO flexibility or bus-hold	Select only if macrocell count is primary constraint and 125 MHz operation suffices; not suitable for PCI timing-critical paths.

Compared with XC95288XL-10TQ144I and ATF1508AS-15AU100, CY37256P160-83AXC delivers superior I/O count (160), tighter timing (7.5 ns), integrated bus-hold, and dual-voltage I/O - making it optimal for PCI-compliant, high-pin-count, and field-upgradable industrial systems.

Availability

CY37256P160-83AXC is available at Aetrix Electronics and suitable for industrial control systems, legacy PCI interface modules, and test equipment requiring stable component supply, long-term lifecycle assurance, and JTAG-based field reconfiguration capability.

Supply support for CY37256P160-83AXC 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 legacy system upgrades and PCI-compliant embedded interfaces - emphasizing ISR, deterministic timing, and mixed-voltage I/O.

FAQ

What voltage levels does CY37256P160-83AXC support on its I/O pins?

CY37256P160-83AXC supports both 3.3V and 5V I/O signaling via programmable V_CCO pins. When V_CCO = 5V, outputs meet 5V TTL levels; when V_CCO = 3.3V, outputs meet 3.3V JEDEC CMOS levels. All I/Os are 5V-tolerant regardless of V_CCO setting, enabling safe interfacing with 5V buses even when operating at 3.3V output levels.

Does CY37256P160-83AXC require external configuration memory?

No. CY37256P160-83AXC is an electrically erasable, non-volatile CPLD. Configuration data is stored internally in on-chip EEPROM and automatically loaded at power-up. No external PROM, flash, or FPGA-style configuration controller is required - simplifying system design and reducing BOM count.

Can CY37256P160-83AXC replace older 22V10 or 20V8 PAL devices?

Yes - through architectural compatibility and Warp® software mapping tools, CY37256P160-83AXC can emulate multiple 22V10/20V8 devices simultaneously. Its 256 macrocells, flexible clocking, and product-term sharing provide significantly higher logic density and routing capacity than legacy PALs, while maintaining pin-level compatibility in many retrofit scenarios.

Is JTAG boundary scan supported on CY37256P160-83AXC?

Yes. CY37256P160-83AXC fully complies with IEEE 1149.1 (JTAG) for both boundary-scan testing and in-system reprogramming. The TAP controller supports INTEST, EXTEST, SAMPLE/PRELOAD, and BYPASS instructions, enabling full visibility into I/O pin states and interconnect integrity verification during production test.

CY37256P160-83AXC Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: Ultra37000™

Package/Case:: 160-LQFP

Packaging:: Tray

Product Status:: Obsolete

Programmable:: Not Verified

Programmable Type:: In-System Reprogrammable™ (ISR™) CMOS

Delay Time tpd(1) Max:: 15 ns

Voltage Supply - Internal:: 4.75V ~ 5.25V

Number of Logic Elements/Blocks:: -

Number of Macrocells:: 256

Number of Gates:: -

Number of I/O:: 133

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 160-TQFP (24x24)

CY37256P160-83AXC FAQ

1.How can I place an order for CY37256P160-83AXC through Aetrix?

Please submit a Request for Quotation (RFQ) for CY37256P160-83AXC on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for CY37256P160-83AXC reliable?

The price and inventory of CY37256P160-83AXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY37256P160-83AXC is usually 5 days.

3.What payment methods are accepted for CY37256P160-83AXC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY37256P160-83AXC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY37256P160-83AXC?

CY37256P160-83AXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY37256P160-83AXC order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for CY37256P160-83AXC?

For technical support, including CY37256P160-83AXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY37256P160-83AXC requirements.

6.How does Aetrix verify that CY37256P160-83AXC is sourced from the original manufacturer or authorized distributors?

All CY37256P160-83AXC products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY37256P160-83AXC meets industry standards.

7.What is the process for return or replacement of CY37256P160-83AXC?

All CY37256P160-83AXC units undergo pre-shipment inspection (PSI). If there is an issue with CY37256P160-83AXC, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The CY37256P160-83AXC part is unused and in its original packaging.

Return procedure for CY37256P160-83AXC:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…

2026-07-13 How to Test Dynamic Load Response in Low-Voltage High-Current Buck Converters

Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…

2026-07-08 Output Capacitor Selection for High-Current ASIC Vcore Rails

Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…

2026-07-07 High-Current ASIC Core Power Supply Design: 12-Phase Buck, PMBus and Dynamic Load Response

Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …

2026-07-06 Voltage Regulator: Types, Circuits, Testing and Selection Guide

Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.

2026-06-30 Amplifiers Explained: Types, Circuits, Gain, Classes and Applications

Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…