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Infineon Technologies CY37256P160-125AC
- Part No.:
- CY37256P160-125AC
- Manufacturer:
- Infineon Technologies
- Package:
- 160-LQFP
- Datasheet:
-
CY37256P160-125AC.pdf
- Description:
- IC CPLD 256MC 10NS 160TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,851
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Product details
Overview
CY37256P160-125AC from Cypress Semiconductor is a 256-macrocell In-System Reprogrammable (ISR™) Complex Programmable Logic Device (CPLD) in the Ultra37000 family, operating at 5V with 160 I/O pins and 125 MHz maximum frequency (tPD = 7.5 ns). It features four synchronous clocks, programmable bus-hold on all I/Os, and JTAG-based reconfiguration without pinout or timing changes - used in PCI-compliant interface logic, legacy bus bridging, and FPGA configuration glue logic.
For engineers reviewing the CY37256P160-125AC datasheet, CY37256P160-125AC pinout, CY37256P160-125AC application, or CY37256P160-125AC equivalent, key selection criteria include macrocell count, I/O count (160), speed bin (125 MHz), 5V/3.3V I/O tolerance, JTAG ISR capability, and TQFP-160 package compatibility for industrial control and telecom backplane designs.
Technical Context
The CY37256P160-125AC implements a multi-block architecture with a global Programmable Interconnect Matrix (PIM) distributing up to 36 signals per logic block and eliminating route-dependent delays. Each of its logic blocks contains a 72×87 product term array, intelligent allocator supporting 0–16 product terms per macrocell, and dedicated asynchronous set/reset/product term clock resources.
It supports flexible clocking via four global synchronous clocks (CLK0–CLK3) plus one product-term clock (PTCLK), all with programmable polarity; all 160 I/Os feature configurable slew rate and bus-hold, and VCCO pins enable mixed 5V/3.3V I/O interfacing while maintaining 5V-tolerant operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Macrocells | 256 - provides combinational and registered logic capacity for medium-complexity glue logic and state machines |
| I/O Pins | 160 - supports high-pin-count parallel interfaces such as PCI, ISA, or memory-mapped peripheral buses |
| Max Frequency (fMAX) | 125 MHz - enables synchronous logic operation up to 8 ns clock period in critical paths |
| Propagation Delay (tPD) | 7.5 ns - fixed, route-independent timing simplifies static timing analysis and design closure |
| Supply Voltage | 5V VCC with 3.3V/5V-tolerant I/O - allows direct interfacing to both legacy 5V and modern 3.3V systems without level shifters |
| JTAG Interface | IEEE 1149.1-compliant - enables in-system reprogramming, boundary scan testing, and debug without device removal |
| Logic Block Count | 16 - each with 16 macrocells, 36 PIM inputs, and local 72×87 product term array for high routing efficiency |
Pinout & Package
This device is packaged in a 160-lead Thin Quad Flat Package (TQFP) with 0.5 mm pitch, body size 24×24 mm, and exposed thermal pad. Pin numbering follows standard TQFP counter-clockwise convention starting from pin 1 (top-left corner, marked with dot or notch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Core power supply | 5V nominal supply for internal logic; decoupling required within 1 cm of each VCC pin |
| VCCO | I/O power supply | Configurable 3.3V or 5V reference determining output voltage levels and input threshold compatibility |
| GND | Ground reference | Multiple dedicated ground pins distributed across package to minimize ground bounce and noise coupling |
| TCK, TMS, TDI, TDO | JTAG test access port | Enable boundary scan and ISR programming; require pull-up/pull-down per IEEE 1149.1 for reliable initialization |
| CLK0–CLK3 | Dedicated clock inputs | Four globally routed synchronous clocks, each configurable for rising/falling edge triggering per logic block |
| I/O[0]–I/O[159] | Programmable bidirectional I/O | All support bus-hold, slew-rate control, and configurable input register/latch modes |
Key Features
| Feature | Design Value |
|---|---|
| In-System Reprogrammability (ISR™) | JTAG-based field updates without board rework - preserves pinout and timing across logic revisions |
| Intelligent Product Term Allocator | Dynamically assigns 0–16 product terms per macrocell and enables sharing across groups of four macrocells without speed penalty |
| Programmable Bus-Hold | Weak latch on every I/O eliminates need for external pull-ups in bus-idle states, reducing BOM and layout complexity |
| Flexible Clock Architecture | Four global synchronous clocks + one product-term clock, all with polarity control - supports mixed-edge and asynchronous timing domains |
| PCI Compatibility | Meets electrical and timing requirements of PCI Local Bus Specification Rev. 2.2 - validated for use in add-in cards and host bridges |
Applications
| PCI Interface Glue Logic | Legacy Bus Bridging |
|---|---|
Use Scenario: Implementing address decoding, bus arbitration, and protocol translation between PCI bus and custom ASIC or microcontroller peripherals. IC Role / Device Role / Timing Role: CPLD acts as synchronous interface controller managing PCI command/address latching, data strobing, and DEVSEL timing. Use Value: 125 MHz fMAX and fixed 7.5 ns tPD ensure compliance with PCI 33 MHz timing budgets; 160 I/Os accommodate full 32-bit multiplexed AD[31:0], C/BE[3:0]#, PAR, and control signals. | Use Scenario: Connecting modern microcontrollers to legacy parallel buses (e.g., ISA, PC/104, or proprietary 8/16-bit data buses) in industrial controllers. IC Role / Device Role / Timing Role: Performs address demultiplexing, wait-state insertion, and signal conditioning for mismatched timing domains. Use Value: Programmable slew rate reduces EMI during high-speed bus transitions; bus-hold prevents floating inputs during bus release phases. |
| FPGA Configuration Manager | Telecom Backplane Control |
Use Scenario: Storing and loading configuration bitstreams for SRAM-based FPGAs (e.g., Xilinx Spartan or Altera Cyclone) during power-up or field update. IC Role / Device Role / Timing Role: Acts as nonvolatile boot loader with JTAG-controlled reconfiguration and CRC verification logic. Use Value: ISR capability enables remote bitstream updates without hardware intervention; 256 macrocells support CRC-16, SPI/I2C interface, and status reporting logic. | Use Scenario: Managing hot-swap sequencing, LED status indication, and fault monitoring across multiple line cards in modular telecom chassis. IC Role / Device Role / Timing Role: Real-time supervisor handling reset propagation, power-good signaling, and inter-card communication handshaking. Use Value: Four dedicated clock inputs synchronize monitoring logic across multiple voltage rails; 5V-tolerant I/Os interface directly with legacy 5V backplane signaling. |
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 |
|---|---|---|---|
| XC95288XL-10TQ144 | 288 macrocells, 144-pin TQFP, 3.3V-only supply, 10 ns tPD | Lacks 5V-tolerant I/O and PCI-compliance certification; requires external level shifters for 5V bus interfacing | Select when lower power and higher density are prioritized over mixed-voltage operation and PCI compliance |
| ATF1508AS-10QU100 | 128 macrocells, 100-pin QFP, 5V supply, 10 ns tPD, no bus-hold | Half the macrocell count and I/O count; lacks programmable slew rate and dedicated clock inputs beyond two | Select for cost-sensitive, lower-density glue logic where bus-hold and advanced clocking are not required |
Compared with XC95288XL-10TQ144 and ATF1508AS-10QU100, the CY37256P160-125AC uniquely delivers 160 I/Os in a 5V-compatible package with certified PCI timing, integrated bus-hold, and four independent clock domains - making it optimal for mixed-voltage backplane and legacy interface consolidation.
Availability
CY37256P160-125AC is available at Aetrix Electronics and suitable for PCI add-in card development, industrial bus bridging, and FPGA configuration management requiring stable component supply and long-term obsolescence mitigation.
Supply support for CY37256P160-125AC 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 system-level interface consolidation - targeting applications where reliability, reprogrammability, and mixed-voltage interoperability are critical.
FAQ
Is CY37256P160-125AC compatible with 3.3V I/O signaling?
Yes - the device supports 3.3V I/O levels when VCCO pins are connected to 3.3V; outputs meet JEDEC 3.3V CMOS standards and remain 5V-tolerant, enabling safe interfacing with both 3.3V and 5V systems without external level shifters.
Does CY37256P160-125AC require external configuration memory?
No - it is electrically erasable and nonvolatile; configuration is stored internally and retained without power. The device boots autonomously on power-up and supports JTAG-based in-system reprogramming without external PROM or flash memory.
Can CY37256P160-125AC replace older 22V10 or 22V10-like PAL devices?
Yes - its architecture extends the 22V10 paradigm with scalable macrocell count, global routing, and ISR capability. Migration is supported via pin-compatible packages and backward-compatible ABEL/VHDL synthesis flows, though timing constraints and pin assignments must be re-verified.
What development tools support CY37256P160-125AC?
Cypress Warp v6.0+ and third-party tools including Mentor Graphics Precision RTL, Synopsys Synplify, and Xilinx ISE (via CPLD import flow) fully support synthesis, place-and-route, and JTAG programming for this device using industry-standard EDIF and JEDEC file formats.
CY37256P160-125AC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- Ultra37000™
- Package/Case:
- 160-LQFP
- Packaging:
- Bag
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- In-System Reprogrammable™ (ISR™) CMOS
- Delay Time tpd(1) Max:
- 10 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)
CY37256P160-125AC FAQ
1.How can I place an order for CY37256P160-125AC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY37256P160-125AC 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 CY37256P160-125AC reliable?
The price and inventory of CY37256P160-125AC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY37256P160-125AC is usually 5 days.
3.What payment methods are accepted for CY37256P160-125AC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY37256P160-125AC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY37256P160-125AC?
CY37256P160-125AC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY37256P160-125AC 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 CY37256P160-125AC?
For technical support, including CY37256P160-125AC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY37256P160-125AC requirements.
6.How does Aetrix verify that CY37256P160-125AC is sourced from the original manufacturer or authorized distributors?
All CY37256P160-125AC 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 CY37256P160-125AC meets industry standards.
7.What is the process for return or replacement of CY37256P160-125AC?
All CY37256P160-125AC units undergo pre-shipment inspection (PSI). If there is an issue with CY37256P160-125AC, 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 CY37256P160-125AC part is unused and in its original packaging.
Return procedure for CY37256P160-125AC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY37256P160-125AC Tags
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5M40ZE64C5N
Intel
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ATF1502ASV-15AU44
Microchip Technology
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5M80ZE64C5N
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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