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Microchip Technology ATF1502AS-15JC44
- Part No.:
- ATF1502AS-15JC44
- Manufacturer:
- Microchip Technology
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
ATF1502AS-15JC44.pdf
- Description:
- IC CPLD 32MC 15NS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,126
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Product details
Overview
ATF1502AS-15JC44 from Atmel is a high-performance, electrically-erasable Complex Programmable Logic Device (CPLD) with 32 macrocells, 5 product terms per macrocell (expandable to 40), 44-pin TQFP package, 7.5 ns maximum pin-to-pin delay, and registered operation up to 125 MHz. It integrates legacy TTL/SSI/MSI logic and supports in-system programming via JTAG for field reconfiguration in industrial control and PCI-compliant interface applications.
For engineers reviewing the ATF1502AS-15JC44 datasheet, ATF1502AS-15JC44 pinout, ATF1502AS-15JC44 application, or ATF1502AS-15JC44 equivalent, key selection considerations include its 32-macrocell architecture, JTAG boundary-scan compliance (IEEE 1149.1a), PCI-compatible 5V I/O drive, programmable slew rate, and dual power-down modes - all validated for commercial temperature range (0°C to +70°C) and 5V ±5% supply.
Technical Context
The ATF1502AS-15JC44 implements a global bus architecture feeding up to 40 signals into each logic block's switch matrix, enabling high routing flexibility and successful pin-locked design iterations. Its macrocell structure includes OR/XOR/cascade logic, configurable D/T-latch flip-flops, and buried feedback paths supporting combinatorial outputs with registered feedback within any macrocell.
It features three global clock pins with Input Transition Detection (ITD), programmable pin-keeper inputs/I/Os, VCC power-up reset with selectable hysteresis, and security fuse protection. JTAG ISP uses standard 4-pin interface (TDI/TDO/TCK/TMS), with optional pull-ups on TMS/TDI and boundary-scan cells on all I/O and input pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Macrocell Count | 32 macrocells - provides gate-equivalent density sufficient to replace multiple SSI/MSI TTL devices or classic PLDs in glue logic consolidation. |
| Product Terms per Macrocell | 5 base terms, expandable to 40 via cascade - enables high-fan-in sum-of-products logic without external fan-in expansion. |
| Pin-to-pin Delay | 7.5 ns (–15 speed grade) - guarantees timing closure for 125 MHz registered operation in synchronous designs. |
| Supply Voltage | 5V ±5% - compatible with legacy 5V TTL/PCI signaling; not rated for 3.3V operation. |
| Operating Temperature | 0°C to +70°C - commercial-grade qualification suitable for non-extended-environment embedded systems. |
| JTAG Compliance | IEEE Std. 1149.1-1990 and 1149.1a-1993 - enables standardized boundary-scan testing and in-system programming without device removal. |
| PCI Compatibility | Meets PCI DC/AC electrical specs (e.g., VOL ≤0.55V at 3 mA, VOH ≥2.4V at –2 mA) - allows direct interfacing with PCI bus without level-shifting. |
Pinout & Package
ATF1502AS-15JC44 is housed in a 44-lead Thin Quad Flat Package (TQFP), lead-free and RoHS-compliant per Atmel documentation. Pin assignments match the 44-pin TQFP top-view layout shown in Rev. 0995J–PLD–09/02.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 6–11, 13–22, 24–30, 32–43 | I/O bidirectional pin | Configurable as input, output, or tristate; supports programmable slew rate, open-collector option, and pin-keeper function. |
| 5, 12, 23, 31 | Dedicated input / Global control | May serve as GCLK1/GCLK2/GCLK3, GCLR, OE1, OE2, PD1, or PD2 - selected per macrocell control requirements. |
| 14, 27, 34, 44 | JTAG interface pins | TDI, TDO, TCK, TMS - used for ISP and boundary-scan; pull-up option available on TMS/TDI. |
| 16, 29, 40 | VCC | Main 5V supply pins - decoupling required at each; total VCC current up to 60 mA (std mode, com temp). |
| 7, 20, 35 | GND | Ground reference pins - must be connected to system ground plane for signal integrity and EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| In-System Programmability (ISP) | Enables firmware updates and logic revisions without device removal using standard JTAG interface - reduces manufacturing and field service cost. |
| Programmable Pin-keeper | Prevents floating inputs/I/Os by latching last driven state - eliminates need for external pull-up resistors and associated DC power loss. |
| Three Global Clock Pins | Supports multi-clock domain designs; each can be assigned to individual macrocells or used as register clocks, resets, or output enables. |
| Reduced-power Macrocell Option | Per-macrocell power gating cuts ICC by up to 40% in standby - critical for thermally constrained or battery-backed systems. |
| Security Fuse | One-time programmable fuse blocks readback of configuration bitstream - protects IP in production units while preserving 16-bit User Signature access. |
Applications
| Industrial PLC I/O Expansion | PCI Bus Glue Logic |
|---|---|
Use Scenario: Replacing discrete TTL logic in programmable logic controller backplanes to manage sensor inputs, relay outputs, and status indicators. IC Role / Device Role / Timing Role: CPLD implementing synchronous state machines and address decoding with deterministic 7.5 ns propagation delay. Use Value: Reduces board space and BOM count while maintaining 125 MHz register-to-register timing for real-time I/O scanning. |
Use Scenario: Interfacing microcontrollers or FPGAs to Peripheral Component Interconnect (PCI) slots in test equipment and data acquisition systems. IC Role / Device Role / Timing Role: Level-shifting, bus arbitration, and protocol translation with PCI-compliant drive strength and skew control. Use Value: Delivers 3 mA sink / –2 mA source at 0.55 V / 2.4 V while meeting PCI AC timing (tCOP ≤13 ns) without external drivers. |
| Legacy System Emulation | Power-Up Reset Sequencing |
Use Scenario: Emulating obsolete PAL/GAL devices in avionics maintenance spares where original parts are unavailable. IC Role / Device Role / Timing Role: Pin-compatible logic replacement with identical macrocell behavior and 44-pin footprint. Use Value: Enables drop-in replacement with full functional equivalence verified via JTAG boundary-scan and BSDL model. |
Use Scenario: Ensuring deterministic initialization of FPGA configuration registers and microcontroller peripherals during cold start. IC Role / Device Role / Timing Role: Generating synchronized reset pulse with programmable hysteresis (Small/Large) tied to VCC ramp. Use Value: Guarantees all 32 macrocell registers initialize before first clock edge - prevents metastability in safety-critical boot sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCR3064XL-10VQ44C | 64 macrocells, 3.3V core, 10 ns tPD, CoolRunner-II architecture with lower static current (10 µA) | Requires level-shifting for 5V PCI interfaces; lacks native 5V-tolerant I/O and ITD circuits | Preferred for new low-power 3.3V designs; not suitable for direct 5V PCI bus connection without external buffers. |
| LC4064V-75T44C | 64 macrocells, 3.3V supply, 7.5 ns tPD, ispMACH 4000 family with enhanced routing and 1.8V I/O support | No PCI DC compliance; no built-in power-up reset hysteresis option; JTAG BSDL differs | Better for high-density, multi-voltage I/O systems; requires redesign if PCI electrical compliance is mandatory. |
Compared with XCR3064XL-10VQ44C and LC4064V-75T44C, the ATF1502AS-15JC44 uniquely delivers native 5V PCI-compliant I/O, integrated power-up reset hysteresis, and Input Transition Detection on global clocks - making it irreplaceable in legacy 5V industrial and PCI add-in card designs where voltage compatibility and deterministic startup are non-negotiable.
Availability
ATF1502AS-15JC44 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, PCI bus glue logic, and legacy system emulation requiring stable component supply across extended product lifecycles.
Supply support for ATF1502AS-15JC44 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 and embedded markets.
The ATF1502AS series was designed as a high-density, in-system programmable CPLD targeting 5V logic consolidation, PCI interface bridging, and obsolescence replacement in mission-critical industrial control systems.
FAQ
What is the operating voltage range for ATF1502AS-15JC44?
The ATF1502AS-15JC44 operates strictly at 5V ±5% (4.75V to 5.25V). It is not rated for 3.3V or mixed-voltage I/O operation. All DC and AC characteristics - including PCI compliance, VOL/VOH levels, and timing parameters - are specified only under this 5V supply condition. Using ATF1502AS-15JC44 outside this range may cause functional failure or reduced reliability.
Does ATF1502AS-15JC44 support in-system programming (ISP)?
Yes, ATF1502AS-15JC44 supports full IEEE 1149.1a-compliant in-system programming via its dedicated 4-pin JTAG interface (TDI, TDO, TCK, TMS). Programming can be performed while soldered on the PCB using standard SVF files, eliminating the need for socketing or rework. The ATF1502AS-15JC44 also includes ISP protection that forces I/O into high-Z during interrupted programming.
What package type is used for ATF1502AS-15JC44?
ATF1502AS-15JC44 uses a 44-lead Thin Quad Flat Package (TQFP), as confirmed by the "JC44" suffix and top-view pinout diagrams in Atmel's Rev. 0995J–PLD–09/02 datasheet. This package is lead-free and RoHS-compliant, with 0.8 mm lead pitch and exposed pad thermal design compatible with standard reflow profiles.
How does the power-down mode work on ATF1502AS-15JC44?
ATF1502AS-15JC44 offers pin-controlled power-down: asserting PD1 or PD2 high reduces ICC to <1 mA while latching all internal states and outputs. During power-down, inputs (except PD pins) are blocked, but pin-keeper circuits maintain I/O levels. The ATF1502AS-15JC44 must be configured with the power-down option enabled in the design file; PD pins cannot serve as logic inputs when active.
Is ATF1502AS-15JC44 compliant with PCI electrical specifications?
Yes, ATF1502AS-15JC44 meets PCI 2.1 DC and AC electrical requirements, including VOL ≤0.55 V at 3 mA sink, VOH ≥2.4 V at –2 mA source, and output slew rates of 1–5 V/ns. Its 5V-tolerant I/O structure and low output-to-output skew enable direct connection to PCI bus lines without external drivers or level shifters - a key differentiator from later-generation 3.3V CPLDs.
ATF1502AS-15JC44 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- In System Programmable (min 10K program/erase cycles)
- Delay Time tpd(1) Max:
- 15 ns
- Voltage Supply - Internal:
- 4.75V ~ 5.25V
- Number of Logic Elements/Blocks:
- -
- Number of Macrocells:
- 32
- Number of Gates:
- -
- Number of I/O:
- 32
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-PLCC (16.6x16.6)
ATF1502AS-15JC44 FAQ
1.How can I place an order for ATF1502AS-15JC44 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1502AS-15JC44 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 ATF1502AS-15JC44 reliable?
The price and inventory of ATF1502AS-15JC44 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1502AS-15JC44 is usually 5 days.
3.What payment methods are accepted for ATF1502AS-15JC44?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1502AS-15JC44 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1502AS-15JC44?
ATF1502AS-15JC44 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1502AS-15JC44 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 ATF1502AS-15JC44?
For technical support, including ATF1502AS-15JC44 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1502AS-15JC44 requirements.
6.How does Aetrix verify that ATF1502AS-15JC44 is sourced from the original manufacturer or authorized distributors?
All ATF1502AS-15JC44 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 ATF1502AS-15JC44 meets industry standards.
7.What is the process for return or replacement of ATF1502AS-15JC44?
All ATF1502AS-15JC44 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1502AS-15JC44, 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 ATF1502AS-15JC44 part is unused and in its original packaging.
Return procedure for ATF1502AS-15JC44:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1502AS-15JC44 Tags
-
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
-
5M80ZE64I5N
Intel
-
5M80ZT100I5N
Intel
-
LC4032V-75TN48C
Lattice Semiconductor Corporation
-
ATF1504ASV-15AU44
Microchip Technology
-
ATF1504AS-10JU44
Microchip Technology
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5M160ZE64C5N
Intel
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