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Microchip Technology ATF2500C-15JI
- Part No.:
- ATF2500C-15JI
- Manufacturer:
- Microchip Technology
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
ATF2500C-15JI.pdf
- Description:
- IC CPLD 24MC 15NS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,782
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Product details
Overview
ATF2500C-15JI from Atmel is a high-density, electrically-erasable programmable logic device (PLD) in a 44-lead PLCC package, delivering 15 ns pin-to-pin delay at 5V, 416 product terms, and 24 flexible macrocells with dual flip-flops per macrocell. It serves as a reprogrammable logic replacement for legacy ATV2500B/BQ and ATV2500H devices in industrial control, instrumentation, and legacy system upgrades.
For engineers reviewing the ATF2500C-15JI datasheet, ATF2500C-15JI pinout, ATF2500C-15JI application, or ATF2500C-15JI equivalent, key selection criteria include its industrial temperature range (–40°C to +85°C), 15 ns propagation delay, dual D/T-type flip-flop configurability per macrocell, and compatibility with Atmel WinCUPL and third-party JEDEC programmers supporting V2500 cross-programming modes.
Technical Context
The ATF2500C-15JI implements a single universal logic array with full interconnectivity: all 38 logic pins and all 48 flip-flop outputs feed directly into every macrocell's 416-product-term array. Each macrocell provides three sum terms combinable into up to 12 product terms without speed penalty.
It supports individual asynchronous reset, OE control, and clocking per macrocell-via dedicated product terms or direct input pins-and enables buried combinatorial feedback by bypassing Q2 to D/T2. Its register architecture includes two independently configurable flip-flops (D- or T-type) per macrocell, with synchronous preset distribution across groups of 4 or 8 registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay (tPD1) | 15 ns max - guarantees timing-critical path performance for 52 MHz external feedback operation in industrial environments. |
| Logic Density | 416 product terms - enables high gate utilization in complex state machines and glue logic without external components. |
| Macrocells | 24 × dual-register - delivers 48 total flip-flops, supporting concurrent registered and combinatorial I/O on same device. |
| Operating Voltage | 5V ±10% - compatible with legacy 5V TTL/CMOS systems and tolerant of industrial supply variation. |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade embedded control, test equipment, and avionics subsystems. |
| ESD Protection | 2000V HBM - ensures robust handling during board assembly and field maintenance in factory environments. |
| Data Retention | 10 years - maintains programmed logic configuration over full industrial lifecycle without refresh. |
Pinout & Package
ATF2500C-15JI uses a 44-lead Plastic J-Leaded Chip Carrier (PLCC) package (JEDEC MS-018 AC), with 38 logic I/O pins, 2 dedicated power pins (VCC at P11/P12), 2 ground pins (GND at P33/P34), and optional GND at P4/P26 for noise immunity. Pin 1 is marked by corner notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN, CLK/IN | Logic Input / Clock Input | Dedicated pin-clock source or general logic input; enables mixed clock-domain designs with independent macrocell clocking. |
| I/O 0–23 | Bi-directional I/O Buffer | Configurable as input, registered output, or combinatorial output; each has independent OE product term and feedback path. |
| GND (P33, P34) | Ground Reference | Primary ground connections; P4 and P26 are optional for enhanced noise immunity but not required for functional operation. |
| VCC (P11, P12) | +5V Supply | Dual VCC pins reduce IR drop and improve power integrity for high-speed switching across 44-pin footprint. |
| SMP (P42), QSEL (P2), etc. | Preload/Observability Control | Enable register preload (10.25–10.75V) or buried register observability for boundary-scan-like debug without external test fixtures. |
Key Features
| Feature | Design Value |
|---|---|
| Selectable D- or T-type flip-flops | Per-macrocell register type selection enables efficient JK/SR emulation and reduces product term usage for sequential logic. |
| Buried combinatorial feedback | Q2 output can bypass flip-flop to feed D/T2 input directly into logic array-expands effective logic density without consuming I/O pins. |
| Individual macrocell OE and reset | Each of 24 outputs has dedicated output-enable product term and asynchronous reset-enables fine-grained bus arbitration and safe power-up states. |
| Programmable pin-keeper circuits | Weak latches hold floating I/Os at last-driven state-eliminates need for external pull-ups in bus-hold applications like memory address latching. |
| User row (64 bits) | Non-volatile storage for unit-specific data (e.g., calibration ID, firmware version)-accessible via programming interface, not runtime logic. |
Applications
| Industrial PLC I/O Expansion | Legacy System Glue Logic Replacement |
|---|---|
Use Scenario: Adding isolated digital I/O channels to programmable logic controllers in factory automation cabinets with space and thermal constraints. IC Role / Device Role / Timing Role: Configurable logic interface between microcontroller bus and opto-isolated relay drivers, managing handshaking, debounce, and status encoding. Use Value: Replaces multiple discrete SSI/MSI ICs with single ATF2500C-15JI, reducing BOM count, PCB area, and thermal load while maintaining 15 ns timing compliance. | Use Scenario: Upgrading aging military or telecom chassis where original ATV2500H/BQ PLDs have reached end-of-life. IC Role / Device Role / Timing Role: Drop-in functional replacement with identical pinout and JEDEC file compatibility-no PCB redesign required. Use Value: Enables continued production using existing firmware and toolchain (Atmel WinCUPL), with improved reliability (10-year data retention) and ESD robustness (2000V). |
| Test Equipment Pattern Generator | Avionics Subsystem Timing Controller |
Use Scenario: Generating synchronized stimulus waveforms for semiconductor ATE, requiring precise edge alignment and multi-phase clock generation. IC Role / Device Role / Timing Role: High-speed registered logic engine generating parallel test vectors with deterministic setup/hold margins under industrial temperature stress. Use Value: 15 ns tPD and 52 MHz fMAXS support sub-20 ns timing resolution; dual flip-flops per macrocell enable independent phase-shifted outputs from shared clock domains. | Use Scenario: Managing discrete signal routing and sequencing in airborne navigation units operating in extended temperature environments. IC Role / Device Role / Timing Role: Safety-critical interface logic between flight computer and sensor modules, enforcing power-up reset behavior and latch-up immunity. Use Value: Guaranteed power-up reset (tPR ≤ 1000 ns), 200 mA latch-up immunity, and –40°C to +85°C qualification ensure deterministic startup and fault resilience in vibration-prone airframes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable logic device applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF2500C-15JC | Same die and timing (15 ns), but commercial temperature range (0°C to 70°C); PLCC package identical. | Not rated for industrial ambient extremes; unsuitable for uncontrolled cabinet environments or outdoor enclosures. | Select only for cost-sensitive, temperature-stable lab or consumer-grade systems. |
| ATF2500C-15JU | Identical industrial rating and 15 ns speed, but Pb/Halide-free (RoHS-compliant) green PLCC package. | Required for EU/Asia export compliance; may exhibit minor solder wetting differences vs. standard PLCC. | Choose when regulatory compliance (RoHS, REACH) is mandatory and no legacy solder process constraints exist. |
Compared with ATF2500C-15JC and ATF2500C-15JU, the ATF2500C-15JI offers the optimal balance of industrial temperature resilience, legacy-compatible PLCC packaging, and non-RoHS manufacturing flexibility-making it ideal for brownfield industrial upgrades where both environmental ruggedness and process continuity matter.
Availability
ATF2500C-15JI is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy system glue logic replacement, and avionics subsystem timing control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ATF2500C-15JI 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
Atmel Corporation (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and programmable logic devices for industrial, automotive, and communications markets.
The ATF2500C-15JI belongs to Atmel's high-density electrically-erasable PLD family, designed specifically to replace obsolete bipolar and UV-erasable PAL/GAL devices in cost-sensitive, long-lifecycle industrial and defense applications.
FAQ
What is the maximum operating frequency supported by the ATF2500C-15JI?
The ATF2500C-15JI supports up to 52 MHz external feedback operation (FMAXS = 1/(tSIS + tCOS)) and 71 MHz internal feedback operation under industrial conditions. Its 15 ns pin-to-pin delay enables reliable timing closure in synchronous logic designs with tight setup/hold windows, especially when leveraging its dual-register macrocell architecture for pipelined paths.
Does the ATF2500C-15JI require external pull-up resistors on unused I/O pins?
No. The ATF2500C-15JI includes programmable pin-keeper circuits that maintain last-driven states on floating inputs or I/Os. When enabled via compiler settings (e.g., V2500CPPKLCC device type), these weak latches eliminate the need for external pull-ups in bus-hold applications-reducing component count and improving signal integrity in high-density layouts.
Can the ATF2500C-15JI be used as a direct replacement for the ATV2500H in existing designs?
Yes. The ATF2500C-15JI is functionally equivalent and pin-compatible with the ATV2500H, including identical PLCC pinout and support for ATV2500H JEDEC files via V2500 cross-programming mode. No PCB changes are required, and it provides faster timing (15 ns vs. 20 ns) and enhanced reliability (10-year data retention, 2000V ESD).
What programming tools are compatible with the ATF2500C-15JI?
The ATF2500C-15JI is fully supported by Atmel WinCUPL for design entry and fuse mapping. It also works with major third-party programmers (e.g., BP Microsystems, Xeltek) using V2500 or V2500B JEDEC file formats. The device accepts three JEDEC variants: standard (71816 fuses), V2500 cross-mode (71648 fuses), and V2500B cross-mode (71745 fuses), depending on feature enablement.
How does the power-up reset behavior of the ATF2500C-15JI ensure deterministic system startup?
The ATF2500C-15JI performs automatic power-up reset: all 48 flip-flops initialize to low state ~600–1000 ns after VCC crosses 3.8–4.5 V. This guarantees known register states at boot, critical for safety-critical sequencers and state machines. Designers must ensure monotonic VCC rise and meet input setup times before first clock edge to avoid metastability.
ATF2500C-15JI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF2500C(L)
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- In System Programmable
- Delay Time tpd(1) Max:
- 15 ns
- Voltage Supply - Internal:
- 4.5V ~ 5.5V
- Number of Logic Elements/Blocks:
- -
- Number of Macrocells:
- 24
- Number of Gates:
- -
- Number of I/O:
- 24
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-PLCC (16.6x16.6)
ATF2500C-15JI FAQ
1.How can I place an order for ATF2500C-15JI through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF2500C-15JI 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 ATF2500C-15JI reliable?
The price and inventory of ATF2500C-15JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF2500C-15JI is usually 5 days.
3.What payment methods are accepted for ATF2500C-15JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF2500C-15JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF2500C-15JI?
ATF2500C-15JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF2500C-15JI 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 ATF2500C-15JI?
For technical support, including ATF2500C-15JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF2500C-15JI requirements.
6.How does Aetrix verify that ATF2500C-15JI is sourced from the original manufacturer or authorized distributors?
All ATF2500C-15JI 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 ATF2500C-15JI meets industry standards.
7.What is the process for return or replacement of ATF2500C-15JI?
All ATF2500C-15JI units undergo pre-shipment inspection (PSI). If there is an issue with ATF2500C-15JI, 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 ATF2500C-15JI part is unused and in its original packaging.
Return procedure for ATF2500C-15JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF2500C-15JI Tags
-
5M40ZE64C5N
Intel
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ATF1502ASV-15AU44
Microchip Technology
-
5M80ZE64C5N
Intel
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5M80ZT100C5N
Intel
-
ATF1502AS-10AU44
Microchip Technology
-
ATF1502AS-10JU44
Microchip Technology
-
5M80ZE64I5N
Intel
-
5M80ZT100I5N
Intel
-
LC4032V-75TN48C
Lattice Semiconductor Corporation
-
ATF1504ASV-15AU44
Microchip Technology
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ATF1504AS-10JU44
Microchip Technology
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5M160ZE64C5N
Intel
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