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Microchip Technology ATF2500C-15JU
- Part No.:
- ATF2500C-15JU
- Manufacturer:
- Microchip Technology
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
ATF2500C-15JU.pdf
- Description:
- IC CPLD 24MC 15NS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,312
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Product details
Overview
ATF2500C-15JU from Atmel is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) in a 44-lead PLCC package, delivering 15 ns pin-to-pin delay at 5V, 24 flexible macrocells with dual flip-flops each (48 total), and full logic array connectivity with 416 product terms. It serves as a reprogrammable, secure, and bus-friendly logic replacement in industrial control I/O expansion, legacy system upgrades, and FPGA companion glue logic.
For engineers reviewing the ATF2500C-15JU datasheet, ATF2500C-15JU pinout, ATF2500C-15JU application, or ATF2500C-15JU equivalent, key selection criteria include its -40°C to +85°C industrial temperature rating, Green (Pb/Halide-free/RoHS-compliant) PLCC packaging, 10-year data retention, 200 mA latch-up immunity, and compatibility with Atmel-WinCUPL and third-party JEDEC programmers supporting V2500 cross-programming modes.
Technical Context
The ATF2500C-15JU implements a single universal logic array where all 38 logic pins and all 48 flip-flop feedback paths feed directly into every macrocell-enabling full interconnectivity without routing constraints. Its 24 macrocells each support independent D- or T-type flip-flop configuration, individual asynchronous reset, OE control, and selectable clock sources (pin or product term).
Each macrocell provides three sum terms combinable into up to 12-product-term fan-in per output with no speed penalty; eight synchronous preset terms serve grouped flip-flops; and buried combinatorial feedback (Q2 bypass) expands logic density without consuming I/O pins. The device supports preload and observability via dedicated SMP pins and includes a security fuse to prevent unauthorized pattern copying.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay (tPD1) | 15 ns max - ensures deterministic timing for 52 MHz external clock operation in registered mode with external feedback. |
| Logic Density | 416 product terms - enables high gate utilization in complex state machines and wide decode logic without external glue. |
| Macrocells / Flip-flops | 24 macrocells, 48 flip-flops - supports dual-register per I/O for pipelined control paths or independent register banks. |
| Operating Voltage | 5V ± 5% - compatible with legacy TTL/CMOS systems; no level-shifting required in 5V industrial backplanes. |
| Temperature Range | -40°C to +85°C - qualified for continuous operation in industrial automation, motor drives, and telecom line cards. |
| Data Retention | 10 years - guarantees nonvolatile configuration persistence across power cycles and thermal stress in unattended equipment. |
| ESD Protection | 2000V HBM - meets IEC 61000-4-2 Level 2 for robust handling during board assembly and field service. |
Pinout & Package
ATF2500C-15JU uses a 44-lead Plastic J-Leaded Chip Carrier (PLCC) package (JEDEC MS-018 AC), measuring 17.4 mm × 17.4 mm × 4.6 mm, with gull-wing leads on all four sides and pin 1 marked by a corner notch. Pin 4 and pin 26 are optional GND connections recommended for noise immunity but not required-ensuring mechanical and functional compatibility with ATV2500H/BQ pinouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (14 pins) | Dedicated logic inputs | Provide primary array inputs; each feeds all product terms-no shared bus bottleneck. |
| CLK/IN | Shared clock input / logic input | Configurable as global clock source or additional logic input; enables mixed-clock-domain designs. |
| I/O0–I/O23 | Bi-directional I/O buffers | 24 programmable I/Os with independent OE control; even/odd grouping supports byte-wide bus interfacing. |
| VCC (P11, P12) | +5V supply | Dual VCC pins reduce IR drop and improve power integrity for high-speed switching across the array. |
| GND (P33, P34) | Ground reference | Dual ground pins minimize ground bounce; P4/P26 optional grounds enhance noise rejection in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| Fully connected logic array | Every macrocell accesses all 38 inputs and 48 feedback paths-eliminates placement conflicts and maximizes logic utilization. |
| Selectable D- or T-type flip-flops | Per-macrocell register type selection enables JK/SR synthesis and efficient state encoding in finite-state machines. |
| Buried combinatorial feedback (Q2 bypass) | Redirects flip-flop output directly to logic array input-adds 24 extra internal signals without consuming I/O pins. |
| Individual asynchronous reset per macrocell | Enables localized reset of subsystems (e.g., UART TX/RX blocks) without affecting unrelated logic sections. |
| Programmable pin-keeper circuits | Weak latches hold floating I/Os at last-driven state-critical for bus-hold integrity in tri-state memory or peripheral interfaces. |
| Security fuse | One-time programmable fuse prevents readback of JEDEC fuse map-protects proprietary logic design IP from cloning. |
Applications
| Industrial PLC I/O Expansion | Legacy System Glue Logic Replacement |
|---|---|
|
Use Scenario: Adding isolated digital input/output channels to a DIN-rail mounted PLC controller with space-constrained PCB layout. IC Role / Device Role / Timing Role: Configurable logic interface between microcontroller GPIO and opto-isolated field terminals; handles debounce, edge detection, and protocol framing. Use Value: Replaces 3–4 discrete SSI chips with one ATF2500C-15JU, reducing BOM count, board area, and qualification effort while maintaining 15 ns timing compliance. |
Use Scenario: Modernizing a 1990s test equipment mainboard using obsolete PAL/GAL devices requiring redesign-compatible drop-in logic. IC Role / Device Role / Timing Role: Direct functional and pin-compatible replacement for ATV2500H/BQ in address decoding, bus arbitration, and interrupt prioritization logic. Use Value: Eliminates obsolescence risk with identical PLCC-44 footprint, same JEDEC file compatibility, and improved 10-year data retention over erasable EPROM-based predecessors. |
| FPGA Companion Control Logic | Automated Test Equipment (ATE) Sequencing |
|
Use Scenario: Offloading low-level control tasks (e.g., JTAG state machine, configuration handshaking, clock gating) from an FPGA in a high-reliability embedded system. IC Role / Device Role / Timing Role: Hardened, nonvolatile CPLD managing FPGA startup sequence, I/O voltage translation, and fail-safe watchdog coordination. Use Value: Provides deterministic power-on reset behavior (tPR = 600–1000 ns) and guaranteed register initialization-avoiding FPGA configuration race conditions. |
Use Scenario: Generating precise stimulus patterns and response capture windows in semiconductor ATE platforms requiring sub-20 ns timing resolution. IC Role / Device Role / Timing Role: High-speed pattern generator core with synchronized multi-phase clocks and independent asynchronous resets per channel bank. Use Value: Achieves 52 MHz external clock operation (fMAXS) with 10 ns tCOS-meets tight setup/hold windows for parallel DUT interface testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF2500C-15JI | Same silicon, identical specs, but packaged in standard (non-Green) PLCC-lacks Pb/Halide-free RoHS compliance. | Suitable for non-regulated industrial environments where RoHS is not mandated; lower cost in legacy procurement channels. | Select ATF2500C-15JI only if RoHS exemption applies and green packaging is not contractually required. |
| ATF2500C-20JU | Slower 20 ns propagation delay (vs. 15 ns), lower 40 MHz fMAXS, otherwise identical Green PLCC packaging and feature set. | Acceptable for cost-sensitive designs with relaxed timing margins-e.g., low-speed sensor aggregation or LED matrix control. | Choose ATF2500C-20JU when 15 ns timing is unnecessary and unit cost reduction outweighs performance headroom. |
Compared with ATF2500C-15JI and ATF2500C-20JU, the ATF2500C-15JU uniquely delivers the fastest timing (15 ns), full industrial temperature range, and mandatory RoHS compliance in a single Green PLCC variant-making it the default choice for new industrial designs requiring regulatory alignment and performance margin.
Availability
ATF2500C-15JU is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy system glue logic replacement, and FPGA companion control logic requiring stable component supply across extended product lifecycles.
Supply support for ATF2500C-15JU 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 innovator specializing in nonvolatile programmable logic, microcontrollers, and secure authentication ICs.
The ATF2500C family was designed to deliver high-density, reprogrammable logic in industry-standard packages for industrial control, instrumentation, and legacy system modernization-emphasizing reliability, security, and software compatibility.
FAQ
What is the operating temperature range for the ATF2500C-15JU?
The ATF2500C-15JU is rated for industrial operation from -40°C to +85°C ambient temperature. This specification is validated per the device's DC and AC operating conditions table and applies to the 44J PLCC package with Green (Pb/Halide-free/RoHS-compliant) construction. The ATF2500C-15JU maintains full functionality-including 15 ns tPD1 and 52 MHz fMAXS-across this entire range without derating.
Does the ATF2500C-15JU support pin-keeper functionality, and how is it enabled?
Yes, the ATF2500C-15JU includes programmable pin-keeper circuits for all I/O pins. These weak latches hold floating pins at their last driven state, preventing undefined logic levels in bus-hold applications. Pin-keepers are enabled by selecting the "V2500CPPKLCC" device mnemonic in Atmel-WinCUPL or using the appropriate JEDEC file variant that sets the pin-keeper bit-default state is disabled for backward compatibility with ATV2500B/BQ designs.
Is the ATF2500C-15JU pin-compatible with the older ATV2500H device?
Yes, the ATF2500C-15JU is fully pin-compatible with the ATV2500H in the 44-lead PLCC package. Pin 4 and pin 26 are optional GND connections-not required for functionality-and match the ATV2500H pinout exactly. The ATF2500C-15JU can be used as a direct replacement using the same PCB footprint and layout, with no modifications needed to traces or solder mask.
What programming tools and file formats are supported for the ATF2500C-15JU?
The ATF2500C-15JU is programmed using JEDEC-standard files generated by Atmel-WinCUPL or third-party compilers. It supports three JEDEC modes: V2500 (71648 fuses, disables User Row and pin-keeper), V2500B (71745 fuses, for ATV2500B/BQ migration), and full V2500C (71816 fuses, enabling User Row and pin-keeper). Major third-party programmers-including Data I/O, BP Microsystems, and Xeltek-support all three modes.
How does the security fuse on the ATF2500C-15JU protect intellectual property?
The ATF2500C-15JU includes a one-time programmable security fuse that, once blown, prevents readback of the internal fuse pattern during verification. When active, it also disables preload and Q2 observability functions. The fuse must be programmed last in the sequence, as its effect is immediate and irreversible-ensuring that proprietary logic configurations cannot be reverse-engineered or cloned from deployed units.
ATF2500C-15JU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF2500C(L)
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- 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-15JU FAQ
1.How can I place an order for ATF2500C-15JU through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF2500C-15JU 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-15JU reliable?
The price and inventory of ATF2500C-15JU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF2500C-15JU is usually 5 days.
3.What payment methods are accepted for ATF2500C-15JU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF2500C-15JU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF2500C-15JU?
ATF2500C-15JU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF2500C-15JU 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-15JU?
For technical support, including ATF2500C-15JU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF2500C-15JU requirements.
6.How does Aetrix verify that ATF2500C-15JU is sourced from the original manufacturer or authorized distributors?
All ATF2500C-15JU 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-15JU meets industry standards.
7.What is the process for return or replacement of ATF2500C-15JU?
All ATF2500C-15JU units undergo pre-shipment inspection (PSI). If there is an issue with ATF2500C-15JU, 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-15JU part is unused and in its original packaging.
Return procedure for ATF2500C-15JU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF2500C-15JU 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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