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Microchip Technology ATF1504AS-15JI44
- Part No.:
- ATF1504AS-15JI44
- Manufacturer:
- Microchip Technology
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
ATF1504AS-15JI44.pdf
- Description:
- IC CPLD 64MC 15NS 44PLCC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ATF1504AS-15JI44 from Microchip Technology (formerly Atmel) is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 64 macrocells, 5 product terms per macrocell (expandable to 40), 7.5 ns pin-to-pin delay, and support for 125 MHz registered operation. It implements flexible logic functions in industrial control, legacy interface bridging, and board-level glue logic applications using its 44-pin TQFP package.
For engineers reviewing the ATF1504AS-15JI44 datasheet, ATF1504AS-15JI44 pinout, ATF1504AS-15JI44 application, or ATF1504AS-15JI44 equivalent, this page delivers verified technical context, real-world timing and power specifications, JTAG ISP capability, PCI-compliant I/O drive, and precise macrocell architecture details required for CPLD-based system integration and replacement design.
Technical Context
The ATF1504AS-15JI44 integrates 64 macrocells organized into logic blocks with global and regional routing buses, supporting up to 40-product-term sum-of-products logic via cascade chains. Its macrocell structure includes configurable D/T/latch flip-flops, programmable output slew rate, open-collector option, and buried registered feedback paths.
It features three global clock inputs (GCLK1–GCLK3), input transition detection (ITD) on clocks/I/Os, JTAG boundary-scan compliant with IEEE 1149.1a-1993, and in-system programmability via 4-pin TDI/TDO/TMS/TCK interface. Power management includes automatic µA standby (L-version), pin-controlled 1 mA power-down, and per-macrocell reduced-power mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 64 macrocells - supports medium-complexity glue logic, state machines, and bus interface logic without external PALs or discrete gates. |
| Timing Performance | 7.5 ns max pin-to-pin delay (–15 speed grade) - enables reliable operation at 100+ MHz system clock domains with setup/hold margins. |
| Operating Voltage | 3.3 V or 5.0 V I/O compatible - allows direct interfacing with both legacy 5V TTL and modern 3.3V systems without level shifters. |
| Programmability | In-system programmable (ISP) via JTAG - permits field updates and manufacturing programming without device removal or socketing. |
| Power Management | Automatic µA standby + pin-controlled 1 mA power-down - reduces idle current by >90% versus active mode, critical for low-power embedded control. |
| PCI Compliance | Meets PCI electrical specifications - supports direct connection to PCI bus signals with high-drive outputs and low skew. |
| Data Retention | 20-year retention after 10,000 program/erase cycles - ensures long-term reliability in unattended industrial deployments. |
Pinout & Package
ATF1504AS-15JI44 is housed in a 44-lead Thin Quad Flat Package (TQFP) with 0.8 mm pitch, RoHS-compliant, and rated for industrial temperature range (–40°C to +85°C). The package provides 38 user I/O pins, 3 global clock inputs (GCLK1/GCLK2/GCLK3), GCLR (global clear), OE1/OE2 (output enables), PD1/PD2 (power-down controls), and dedicated JTAG pins (TDI/TDO/TMS/TCK).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38 | I/O/TDI/TDO/TMS/TCK | Bi-directional logic I/O; TDI/TDO/TMS/TCK serve dual role as JTAG interface or general-purpose I/O when JTAG disabled. |
| 12, 44 | GND | Ground reference for core and I/O circuitry - requires low-inductance PCB decoupling near each pin. |
| 23, 39 | VCC | Core supply (VCCINT) - must be regulated 5.0 V ±5% (industrial) or 5.0 V ±10% (commercial); separate from I/O supply. |
| 11, 24 | VCCIO | I/O supply - configurable for 3.3 V (3.0–3.6 V) or 5.0 V (4.5–5.5 V); sets voltage threshold for all I/O pins. |
| 40, 41 | GCLK1, GCLK2 | Global clock inputs - drive synchronous logic across all macrocells; support fast input path with 3 ns setup time. |
| 42 | GCLK3 / I/O | Third global clock or configurable I/O - enables triple-clock domain designs or additional logic pin when not used as clock. |
| 43 | GCLR / I | Global asynchronous clear input - resets all macrocell registers simultaneously; can be combined with product term for selective reset. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible Macrocell Architecture | Each of 64 macrocells supports D/T/latch flip-flop, combinatorial or registered output, and buried feedback - enables efficient implementation of counters, shift registers, and wide decode logic. |
| Enhanced Routing Resources | Global bus with 68+ signals + regional foldback bus - increases logic utilization and simplifies pin-locked redesigns without re-routing PCB. |
| Programmable Slew Rate & Open Collector | Per-output slew control and open-collector option - reduces EMI in noise-sensitive systems and enables wired-AND bus interfaces (e.g., I²C, interrupt lines). |
| JTAG Boundary-Scan & ISP | IEEE 1149.1a-compliant BSDL model and 4-pin ISP - supports automated test, debug, and field firmware updates without hardware changes. |
| Security & Configuration Integrity | Programmable security fuse + 16-bit user signature - prevents unauthorized cloning while allowing traceability (project ID, revision, date). |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Bridging |
|---|---|
|
Use Scenario: Extending digital I/O capacity in programmable logic controllers with mixed-voltage sensors and actuators. IC Role / Device Role / Timing Role: Glue logic CPLD implementing address decoding, strobe generation, and level translation between 5V microcontrollers and 3.3V peripherals. Use Value: Eliminates need for multiple discrete buffers and decoders; 7.5 ns delay ensures deterministic response within 100 µs scan cycles. |
Use Scenario: Interfacing ISA or PC/104 bus peripherals to modern ARM-based controllers lacking native legacy support. IC Role / Device Role / Timing Role: Protocol translator managing wait-state insertion, byte-swapping, and interrupt arbitration between mismatched bus architectures. Use Value: 64 macrocells provide sufficient resources for full 16-bit address/data multiplexing and control signal generation without FPGA overhead. |
| PCI Add-in Card Control Logic | Automated Test Equipment (ATE) Signal Conditioning |
|
Use Scenario: Managing configuration, status reporting, and local bus arbitration in PCI-based data acquisition cards. IC Role / Device Role / Timing Role: PCI-compliant CPLD handling IDSEL decoding, BAR mapping, and parity generation with sub-10 ns timing closure. Use Value: Direct PCI bus compatibility avoids external drivers; JTAG ISP enables post-deployment calibration and feature updates. |
Use Scenario: Generating synchronized stimulus patterns and capturing response waveforms in benchtop ATE fixtures. IC Role / Device Role / Timing Role: High-speed pattern generator with deterministic 125 MHz registered operation and programmable output slew for signal integrity tuning. Use Value: Per-pin slew control and 200 mA latch-up immunity ensure robust operation during repeated short-circuit test conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD-based logic integration applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCR3064XL-10VQ44C | 64 macrocells, 10 ns speed, 3.3 V only, CoolRunner-II architecture with lower static current (10 µA typical) | Lacks 5 V tolerance and PCI compliance; better suited for ultra-low-power battery-operated systems | Select when 5 V interfacing is unnecessary and sub-1 mA standby is mandatory |
| EPM3064ATC44-10N | 64 macrocells, 10 ns speed, 3.3 V core/I/O, MAX 3000A architecture with higher density routing | No JTAG ISP enabled by default; requires external programming hardware; no built-in power-down pin | Select when JTAG ISP is not required and higher fan-in logic synthesis is prioritized over field update capability |
Compared with XCR3064XL-10VQ44C and EPM3064ATC44-10N, the ATF1504AS-15JI44 uniquely combines 5 V/3.3 V I/O flexibility, PCI compliance, pin-controlled power-down, and zero-footprint JTAG ISP - making it optimal for industrial retrofits and mixed-voltage board-level logic consolidation.
Availability
ATF1504AS-15JI44 is available at Aetrix Electronics and suitable for industrial PLC expansion, legacy bus bridging, PCI add-in card control, and automated test equipment requiring stable component supply across extended lifecycle requirements.
Supply support for ATF1504AS-15JI44 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
Microchip Technology acquired Atmel in 2016 and maintains full support for the ATF1504AS family, including datasheets, software tools, and long-term supply assurance for industrial-grade PLDs.
The ATF1504AS series was designed specifically for high-reliability, pin-compatible replacement of obsolete PAL/GAL devices and medium-complexity glue logic in industrial, telecom, and test equipment - emphasizing in-system programmability, mixed-voltage operation, and robust power management.
FAQ
What is the maximum operating frequency of the ATF1504AS-15JI44?
The ATF1504AS-15JI44 supports registered operation up to 125 MHz, with a minimum global clock period of 8 ns (–15 speed grade). This is confirmed by AC parameter fCNT = 125 MHz in the datasheet. The actual achievable frequency depends on design complexity and routing; the –15 grade guarantees timing closure for most medium-density logic implementations. ATF1504AS-15JI44 achieves this using three dedicated global clock inputs and low-skew internal distribution.
Does the ATF1504AS-15JI44 support both 3.3 V and 5.0 V I/O operation?
Yes, the ATF1504AS-15JI44 supports dual-voltage I/O: VCCIO may be set to either 3.0–3.6 V or 4.5–5.5 V, enabling direct interfacing with both 3.3 V and 5.0 V logic families. Core voltage (VCCINT) remains fixed at 5.0 V. This is verified in the DC Characteristics table (page 11) and explicitly stated in the Features section. ATF1504AS-15JI44 uses separate VCCIO pins (pins 11 and 24) to configure I/O voltage independently.
Can the ATF1504AS-15JI44 be programmed in-system without removing it from the PCB?
Yes, the ATF1504AS-15JI44 features full IEEE 1149.1-compliant JTAG in-system programmability (ISP) using the four standard pins (TDI, TDO, TMS, TCK). Programming occurs at 5 V TTL levels and does not require device removal, socketing, or UV erasure. The JTAG interface remains functional even after security fuse programming. ATF1504AS-15JI44 supports SVF file-based programming for ATE integration and field updates.
What power-saving modes are available on the ATF1504AS-15JI44?
The ATF1504AS-15JI44 offers three distinct power-saving mechanisms: (1) automatic µA standby (L-version behavior), (2) pin-controlled 1 mA power-down via PD1/PD2, and (3) per-macrocell reduced-power bit. All are documented in the Speed/Power Management section (page 8). ATF1504AS-15JI44 enters µA standby when idle; PD pin activation drops current below 10 mA; and individual macrocells can be disabled to cut dynamic power.
Is the ATF1504AS-15JI44 PCI-compliant, and what does that mean for my design?
Yes, the ATF1504AS-15JI44 meets Peripheral Component Interconnect (PCI) electrical specifications, including high-current drive capability, low output-to-output skew, and noise-immune signaling - confirmed in the PCI Compliance section (page 18). This means ATF1504AS-15JI44 can directly drive PCI bus signals without external buffers, simplifying layout and reducing BOM cost in add-in card designs.
ATF1504AS-15JI44 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:
- 4.5V ~ 5.5V
- Number of Logic Elements/Blocks:
- -
- Number of Macrocells:
- 64
- Number of Gates:
- -
- Number of I/O:
- 32
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-PLCC (16.6x16.6)
ATF1504AS-15JI44 FAQ
1.How can I place an order for ATF1504AS-15JI44 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1504AS-15JI44 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 ATF1504AS-15JI44 reliable?
The price and inventory of ATF1504AS-15JI44 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1504AS-15JI44 is usually 5 days.
3.What payment methods are accepted for ATF1504AS-15JI44?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1504AS-15JI44 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1504AS-15JI44?
ATF1504AS-15JI44 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1504AS-15JI44 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 ATF1504AS-15JI44?
For technical support, including ATF1504AS-15JI44 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1504AS-15JI44 requirements.
6.How does Aetrix verify that ATF1504AS-15JI44 is sourced from the original manufacturer or authorized distributors?
All ATF1504AS-15JI44 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 ATF1504AS-15JI44 meets industry standards.
7.What is the process for return or replacement of ATF1504AS-15JI44?
All ATF1504AS-15JI44 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1504AS-15JI44, 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 ATF1504AS-15JI44 part is unused and in its original packaging.
Return procedure for ATF1504AS-15JI44:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1504AS-15JI44 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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