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Infineon Technologies CY37256VP160-66AXC
- Part No.:
- CY37256VP160-66AXC
- Manufacturer:
- Infineon Technologies
- Package:
- 160-LQFP
- Datasheet:
-
CY37256VP160-66AXC.pdf
- Description:
- IC CPLD 256MC 20NS 160TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,599
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Product details
Overview
CY37256VP160-66AXC from Cypress Semiconductor is a 3.3V In-System Reprogrammable (ISR™) Complex Programmable Logic Device (CPLD) in the Ultra37000 family, featuring 256 macrocells, 160 I/O pins, and a 66 MHz maximum operating frequency (fMAX). It implements a flexible logic block architecture with programmable product-term allocation, four synchronous clocks per logic block, and JTAG-compliant ISR for field reconfiguration without pinout or timing changes. It is used in PCI-compliant interface glue logic, FPGA configuration management, and legacy bus bridging.
For engineers reviewing the CY37256VP160-66AXC datasheet, CY37256VP160-66AXC pinout, CY37256VP160-66AXC application, or CY37256VP160-66AXC equivalent, key selection criteria include its 160-pin TQFP package, 3.3V VCC/VCCO, 5V-tolerant I/Os, programmable slew rate, and bus-hold capability on all I/Os - critical for noise-sensitive industrial control and hot-swap-capable backplane designs.
Technical Context
The CY37256VP160-66AXC 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). Its Programmable Interconnect Matrix (PIM) delivers fixed, route-independent timing by routing all signals-including macrocell feedbacks and dedicated inputs-through a global 36-input matrix per logic block.
It supports dual-mode clocking: four user-selectable synchronous clocks (CLK0–CLK3) with polarity control per logic block, plus an asynchronous product term clock (PTCLK). All 160 I/Os feature programmable bus-hold, slew rate control (fast/slow), and 5V tolerance with 3.3V JEDEC-compliant output levels-enabling direct interfacing with mixed-voltage systems without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Macrocells | 256 total, distributed across eight logic blocks; enables implementation of medium-complexity state machines or multi-channel protocol logic. |
| I/O Pins | 160 bidirectional, 5V-tolerant, with programmable bus-hold and slew rate; supports direct connection to 3.3V/5V buses without external resistors. |
| Propagation Delay (tPD) | 12 ns typical; guarantees deterministic timing across all routing paths due to PIM-based architecture with no fanout or expander penalties. |
| Max Frequency (fMAX) | 100 MHz (12 ns bin); validated for synchronous logic running at 100 MHz with full 16-product-term utilization per macrocell. |
| Supply Voltage | 3.3V ± 0.3V on VCC; VCCO tied to 3.3V for JEDEC-compliant outputs; eliminates need for separate I/O voltage rails. |
| JTAG Interface | IEEE 1149.1-compliant for ISR programming and boundary scan; enables in-circuit reconfiguration without device removal or system power-down. |
| Logic Block Clocks | Four synchronous clocks (CLK0–CLK3) + one product term clock (PTCLK); allows independent clock domain assignment per logic block. |
Pinout & Package
Package: 160-lead Thin Quad Flat Package (TQFP), 24 × 24 mm body, 0.5 mm pitch, RoHS-compliant lead-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TCK, TMS, TDI, TDO | JTAG boundary scan and ISR programming interface | Enables in-system reprogramming and test access without requiring external programming hardware or board redesign. |
| CLK0–CLK3 | Dedicated synchronous clock inputs | Four globally distributed clocks per logic block; each configurable for rising/falling edge triggering via polarity control. |
| IO[0]–IO[159] | Bidirectional I/O with bus-hold and slew control | All pins support 3.3V operation, 5V tolerance, and optional weak latch behavior to hold last valid state during high-Z periods. |
| GND / VCC / VCCO | Power supply terminals | VCC = core logic supply (3.3V); VCCO = I/O supply (must be 3.3V); multiple GND pins ensure low-noise reference for high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| In-System Reprogrammability (ISR™) | JTAG-based field updates preserve pinout and timing; eliminates PCB respins during firmware or logic revisions. |
| Programmable Bus-Hold | Active on all 160 I/Os; replaces external pull-ups in bus-hold applications, reducing BOM count and board space. |
| Flexible Product Term Allocation | 0–16 product terms assignable per macrocell with steering and sharing; enables efficient use of logic resources without speed penalty. |
| PCI-Compliant Electrical Interface | Meets PCI Local Bus Specification timing and voltage thresholds (VIH = 2.0V min, 5V-tolerant I/O); certified for add-in card logic. |
| Programmable Slew Rate | Per-pin fast/slow edge selection; reduces EMI in noise-sensitive environments while maintaining 100 MHz performance where needed. |
Applications
| PCI Add-In Card Glue Logic | FPGA Configuration Manager |
|---|---|
Use Scenario: Implementing address decoding, interrupt arbitration, and register mapping between PCI bus and local peripherals on an expansion card. IC Role / Device Role / Timing Role: CPLD acts as synchronous interface controller with deterministic 12 ns propagation delay and four independent clock domains. Use Value: Eliminates discrete logic and reduces gate count by >70% vs. 74-series solutions while maintaining full PCI timing compliance. |
Use Scenario: Storing and serially loading configuration bitstreams into Xilinx or Altera FPGAs during power-up or dynamic reconfiguration. IC Role / Device Role / Timing Role: Nonvolatile logic sequencer with JTAG-accessible registers and precise startup timing control. Use Value: Enables single-image BOM with integrated fallback configuration storage and failsafe reload via ISR without external PROM. |
| Legacy Bus Bridge (ISA/LPC to SPI/I²C) | Industrial Control I/O Expander |
Use Scenario: Translating timing-critical ISA or LPC bus cycles into packetized SPI or I²C transactions for microcontroller peripherals. IC Role / Device Role / Timing Role: Protocol translator with programmable setup/hold generation and clock domain crossing using PTCLK and CLKx. Use Value: Supports variable bus speeds (up to 8.33 MHz ISA) while isolating MCU from timing jitter via synchronous macrocell registers. |
Use Scenario: Adding 160 programmable digital I/Os to PLC mainboards or motion controllers with real-time status monitoring. IC Role / Device Role / Timing Role: High-density I/O conditioner with per-pin bus-hold, slew control, and 5V-tolerant input sampling. Use Value: Reduces need for external level shifters and pull resistors, lowering system cost and improving EMC robustness in factory-floor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD-based interface logic applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMD XC95288XL-10TQ144C | 288 macrocells, 144-pin TQFP, 5V-only supply, 10 ns tPD; lacks bus-hold and 5V-tolerant I/Os. | Requires external pull-ups and level shifters for mixed-voltage interfaces; not suitable for PCI hot-swap or 3.3V-native systems. | Select only if legacy 5V-only design exists and JTAG reprogrammability is secondary to raw density. |
| Lattice ispMACH 4256V-10T144 | 256 macrocells, 144-pin TQFP, 3.3V supply, 10 ns tPD; supports IEEE 1532 ISP but no built-in bus-hold. | Needs external bus-hold resistors for floating-bus reliability; lacks dedicated PCI VIH=2V compliance validation. | Prefer when lower propagation delay is critical and external components are acceptable for I/O conditioning. |
Compared with XC95288XL-10TQ144C and ispMACH 4256V-10T144, CY37256VP160-66AXC uniquely integrates 5V-tolerant I/Os, programmable bus-hold, and PCI-certified electrical behavior in a 160-pin footprint-reducing external component count and qualification effort for industrial and embedded interface applications.
Availability
CY37256VP160-66AXC is available at Aetrix Electronics and suitable for PCI add-in card development, FPGA configuration management, and industrial I/O expansion requiring stable component supply and long-term lifecycle support.
Supply support for CY37256VP160-66AXC 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 for industrial, automotive, and consumer markets.
The Ultra37000 CPLD family was designed to deliver high-density, pin-compatible, and timing-predictable logic for replacing TTL glue logic and enabling rapid prototyping of mixed-signal interface subsystems.
FAQ
Is CY37256VP160-66AXC compatible with 5V signaling?
Yes - all 160 I/Os are 5V-tolerant when VCCO = 3.3V, meeting JEDEC 3.3V CMOS output specifications while accepting 0–5V input voltages. This eliminates level shifters in mixed-voltage systems such as PCI add-in cards interfacing with 5V peripherals.
Does this device support in-system programming without removing it from the board?
Yes - CY37256VP160-66AXC implements IEEE 1149.1 JTAG for full In-System Reprogrammability (ISR™). Programming occurs via TCK/TMS/TDI/TDO pins while powered and mounted, preserving pinout and timing across logic revisions.
What is the purpose of the dedicated clock pins CLK0–CLK3?
CLK0–CLK3 are four globally routed synchronous clocks assigned per logic block. Each supports programmable polarity (rising/falling edge) and can drive any macrocell within its block, enabling independent clock domain management for multi-rate interface logic like UART + SPI coexistence.
Can unused I/O pins be left unconnected?
Yes - programmable bus-hold latches maintain the last driven logic state on all I/Os during high-impedance conditions. This prevents floating inputs, reduces system noise, and allows safe NC (no-connect) treatment of unused pins during prototyping or design iteration.
CY37256VP160-66AXC 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:
- 20 ns
- Voltage Supply - Internal:
- 3V ~ 3.6V
- 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)
CY37256VP160-66AXC FAQ
1.How can I place an order for CY37256VP160-66AXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY37256VP160-66AXC 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 CY37256VP160-66AXC reliable?
The price and inventory of CY37256VP160-66AXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY37256VP160-66AXC is usually 5 days.
3.What payment methods are accepted for CY37256VP160-66AXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY37256VP160-66AXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY37256VP160-66AXC?
CY37256VP160-66AXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY37256VP160-66AXC 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 CY37256VP160-66AXC?
For technical support, including CY37256VP160-66AXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY37256VP160-66AXC requirements.
6.How does Aetrix verify that CY37256VP160-66AXC is sourced from the original manufacturer or authorized distributors?
All CY37256VP160-66AXC 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 CY37256VP160-66AXC meets industry standards.
7.What is the process for return or replacement of CY37256VP160-66AXC?
All CY37256VP160-66AXC units undergo pre-shipment inspection (PSI). If there is an issue with CY37256VP160-66AXC, 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 CY37256VP160-66AXC part is unused and in its original packaging.
Return procedure for CY37256VP160-66AXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY37256VP160-66AXC Tags
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5M40ZE64C5N
Intel
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ATF1502ASV-15AU44
Microchip Technology
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Intel
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5M80ZT100C5N
Intel
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ATF1502AS-10AU44
Microchip Technology
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ATF1502AS-10JU44
Microchip Technology
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5M80ZE64I5N
Intel
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5M80ZT100I5N
Intel
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LC4032V-75TN48C
Lattice Semiconductor Corporation
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ATF1504ASV-15AU44
Microchip Technology
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ATF1504AS-10JU44
Microchip Technology
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5M160ZE64C5N
Intel
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