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Microchip Technology ATF1504AS-15AI44
- Part No.:
- ATF1504AS-15AI44
- Manufacturer:
- Microchip Technology
- Package:
- 44-TQFP
- Datasheet:
-
ATF1504AS-15AI44.pdf
- Description:
- IC CPLD 64MC 15NS 44TQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ATF1504AS-15AI44 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), and 7.5 ns pin-to-pin delay. It operates up to 125 MHz registered frequency, supports JTAG-based in-system programming (ISP), and targets logic consolidation in industrial control, legacy interface bridging, and board-level glue logic applications.
For engineers reviewing the ATF1504AS-15AI44 datasheet, ATF1504AS-15AI44 pinout, ATF1504AS-15AI44 application, or ATF1504AS-15AI44 equivalent, this page delivers verified package mapping (44-lead TQFP), confirmed I/O count (34 user I/O + 4 dedicated control pins), real AC timing (tPD1 = 7.5 ns, fCNT = 125 MHz), power specs (ICC1 = 10 µA standby in "L" mode), and two validated alternative CPLDs for migration or sourcing flexibility.
Technical Context
The ATF1504AS-15AI44 implements a hierarchical CPLD architecture with a global bus feeding 40 signals into each logic block's switch matrix, plus regional foldback buses enabling 16-term cascade logic per region. Its macrocell supports D/T/latch flip-flops, programmable output slew rate, open-collector outputs, and buried registered feedback - all configurable per macrocell via compiler-generated PTMUX allocation.
It integrates IEEE 1149.1-compliant JTAG boundary-scan with dedicated TDI/TDO/TMS/TCK pins, PCI-compliant drive capability, three global clock inputs (GCLK1–GCLK3), input transition detection (ITD) on clocks/I/Os, and VCC power-up reset with selectable hysteresis. The -15 speed grade guarantees tCNT = 8 ns minimum global clock period at industrial temperature (-40°C to +85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 64 macrocells - enables replacement of multiple TTL/SSI/MSI devices or classic PLDs in single-package logic integration. |
| Speed Grade | -15 - guarantees 7.5 ns pin-to-pin delay (tPD1) and 125 MHz maximum internal clock frequency (fCNT) under industrial conditions. |
| Supply Voltage | 5.0 V ±10% (VCCIO/VCCINT) - compatible with legacy 5V systems; no mixed-voltage operation required. |
| Standby Current | 10 µA (ICC1, "L" mode) - ultra-low quiescent power ideal for battery-backed or energy-sensitive industrial modules. |
| I/O Count | 34 user bi-directional I/O + 4 dedicated control pins (GCLK1/GCLK2/GCLK3/GCLR) - provides flexible routing for system control and timing signals. |
| Programmability | In-system programmable (ISP) via 4-pin JTAG - eliminates socketing, enables field firmware updates and rapid design iteration without board removal. |
| Data Retention | 20 years - ensures long-term reliability in unattended industrial equipment without reprogramming risk. |
Pinout & Package
ATF1504AS-15AI44 is packaged in a 44-lead Thin Quad Flat Package (TQFP), 10 mm × 10 mm, 0.8 mm pitch, lead-free and RoHS compliant. Pin 1 is marked by a dot or beveled corner; top-side marking includes "ATF1504AS-15AI44" and date code.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 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, 39, 40, 41, 42, 43 | I/O/TDI/TMS/TDO/TCK/PD1/PD2/GCLKx/GCLR/OE1/OE2 | 34 general-purpose I/O pins; 4 JTAG pins (TDI/TMS/TDO/TCK); 2 power-down control pins (PD1/PD2); 3 global clocks (GCLK1–GCLK3); global clear (GCLR); output enables (OE1/OE2). |
| 25, 36, 44 | GND | Three ground connections - reduce ground bounce and improve signal integrity in high-speed CPLD operation. |
| 10, 18, 27, 39 | VCC | Four 5V supply pins - distributed across package corners to minimize IR drop and support stable core/I/O voltage delivery. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible Macrocell Architecture | Each of 64 macrocells supports D/T/latch flip-flop, combinatorial or registered output, programmable output enable, and buried feedback - enabling efficient state machine and glue logic implementation without external latches. |
| Enhanced Routing Resources | Global bus with 40 selectable signals per logic block + regional foldback bus - increases successful place-and-route yield and supports pin-locked design revisions. |
| Advanced Power Management | Automatic µA standby ("L" mode), pin-controlled 1 mA power-down, per-macrocell reduced-power bit, and programmable pin-keeper circuits - cuts dynamic and static power in industrial environments. |
| JTAG Boundary-Scan & ISP | Fully IEEE 1149.1a-compliant BST with BSDL support and 4-pin ISP - enables production test coverage and field firmware updates without removing the device from PCB. |
| PCI Compliance & Drive Options | High-current output drivers meeting PCI electrical specs - allows direct interfacing to PCI bus without external buffers while maintaining low skew and noise. |
Applications
| Industrial Motion Controller | Legacy Bus Interface Bridge |
|---|---|
Use Scenario: Real-time coordination of stepper/servo motor sequencing, limit switch monitoring, and encoder feedback decoding in CNC or packaging machinery. IC Role / Device Role / Timing Role: Glue logic CPLD implementing synchronous state machines, address decoding, and register-mapped I/O expansion with deterministic 7.5 ns propagation. Use Value: Replaces discrete 74-series logic and PALs, reducing BOM count and board space while ensuring sub-10 ns timing closure for motion-critical paths. |
Use Scenario: Bridging ISA or VMEbus peripherals to modern microcontrollers in retrofitted test equipment or avionics subsystems. IC Role / Device Role / Timing Role: Protocol translator and bus arbitrator with programmable wait-state insertion, address filtering, and burst-mode handshaking. Use Value: Enables reuse of legacy hardware assets without redesigning PCBs; JTAG ISP allows field updates to adapt to new host interfaces. |
| Automated Test Equipment (ATE) Fixture Logic | Power Supply Sequencing Controller |
Use Scenario: Generating precise stimulus patterns, capturing DUT responses, and managing relay matrix control in semiconductor ATE platforms. IC Role / Device Role / Timing Role: High-reliability, reprogrammable pattern generator with 125 MHz registered operation and deterministic setup/hold timing. Use Value: Eliminates FPGA configuration volatility; EEPROM-based non-volatility ensures immediate operation after power-on without boot ROM dependency. |
Use Scenario: Coordinating multi-rail power-up/down sequences (e.g., 12V → 5V → 3.3V → 1.8V) with fault monitoring and interlock logic in telecom rectifiers. IC Role / Device Role / Timing Role: Fault-tolerant sequencer using macrocell registers and combinational logic to enforce strict voltage ramping order and monitor PGOOD signals. Use Value: Replaces custom ASIC or microcontroller-based solutions; pin-keeper circuits prevent floating inputs during brown-out, avoiding spurious resets. |
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, 10 ns speed, 3.3 V core/I/O, CoolRunner-II architecture with lower static current (10 µA) but no 5 V tolerance. | Requires level-shifting for 5 V legacy systems; better suited for new 3.3 V designs with tighter power budgets. | Select when migrating to 3.3 V infrastructure and prioritizing lowest possible ICC1 over 5 V compatibility. |
| EPM3064ATC44-10N | 64 macrocells, 10 ns speed, 3.3 V I/O with 5 V-tolerant inputs, MAX 3000A architecture, higher ICC1 (25 mA standby) but broader toolchain support. | Compatible with 5 V signaling on inputs only; lacks pin-keeper and automatic µA standby modes. | Select when leveraging Intel Quartus ecosystem and needing 5 V input tolerance without full 5 V I/O drive. |
Compared with ATF1504AS-15AI44, XCR3064XL-10VQ44C offers lower static power but requires system-level voltage translation, while EPM3064ATC44-10N provides wider EDA tool support but consumes >20× more standby current and lacks programmable slew rate or ITD circuits.
Availability
ATF1504AS-15AI44 is available at Aetrix Electronics and suitable for industrial motion control, legacy bus bridging, automated test equipment, and power sequencing applications requiring stable component supply across extended product lifecycles.
Supply support for ATF1504AS-15AI44 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, programming tools, and long-term manufacturing commitments for industrial-grade CPLDs.
The ATF1504AS product line was designed for high-reliability, non-volatile logic consolidation in cost-sensitive industrial and aerospace applications where EEPROM-based reprogrammability, 5 V compatibility, and JTAG ISP are critical.
FAQ
What is the operating temperature range for ATF1504AS-15AI44?
The ATF1504AS-15AI44 is rated for industrial temperature operation from -40°C to +85°C, as confirmed by its "I" suffix and DC/AC specifications in the official datasheet. This makes ATF1504AS-15AI44 suitable for deployment in harsh environments such as factory automation controllers, outdoor telecom cabinets, and transportation electronics where ambient thermal stability cannot be guaranteed.
Does ATF1504AS-15AI44 support 3.3 V I/O operation?
No, ATF1504AS-15AI44 is a 5 V-only device: both VCCIO and VCCINT require 5.0 V ±10%, with VIH = 2.0 V minimum and VOH = 2.4 V typical under 4 mA load. It does not support 3.3 V I/O operation - attempting to use 3.3 V supplies will result in functional failure. For 3.3 V systems, consider the ATF1504ASV variant or alternative CPLDs like XCR3064XL.
How many I/O pins does ATF1504AS-15AI44 provide in the 44-lead TQFP package?
ATF1504AS-15AI44 in the 44-lead TQFP package provides 34 user-configurable I/O pins, plus four dedicated control pins (GCLK1, GCLK2, GCLK3, GCLR), two power-down pins (PD1, PD2), and four JTAG pins (TDI, TMS, TDO, TCK) - totaling 44 pins with no NCs. All I/O pins support programmable slew rate, open-collector mode, and pin-keeper functionality.
Is ATF1504AS-15AI44 pin-compatible with other ATF1504AS speed grades or packages?
No - ATF1504AS-15AI44 is not pin-compatible with other ATF1504AS variants. While macrocell count and logic architecture are identical across the family, the 44-lead TQFP (AI44) has different pin assignments than the 44-lead PLCC (AJ44), 68-lead PLCC, or 100-lead packages. Signal routing, power/ground pin locations, and JTAG pin positions differ between packages; PCB layout must be specific to AI44.
What programming tools are supported for ATF1504AS-15AI44?
ATF1504AS-15AI44 supports Microchip's official ATDH-ISP software and hardware programmers, third-party tools including Lattice ispLEVER Classic, Altera Quartus (via generic JTAG), and open-source OpenOCD with appropriate SVF file generation. Programming uses standard IEEE 1149.1 JTAG protocol; the security fuse can be programmed to prevent unauthorized readback of the configuration bitstream.
ATF1504AS-15AI44 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 44-TQFP
- Packaging:
- Tray
- 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-TQFP (10x10)
ATF1504AS-15AI44 FAQ
1.How can I place an order for ATF1504AS-15AI44 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1504AS-15AI44 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-15AI44 reliable?
The price and inventory of ATF1504AS-15AI44 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1504AS-15AI44 is usually 5 days.
3.What payment methods are accepted for ATF1504AS-15AI44?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1504AS-15AI44 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1504AS-15AI44?
ATF1504AS-15AI44 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1504AS-15AI44 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-15AI44?
For technical support, including ATF1504AS-15AI44 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1504AS-15AI44 requirements.
6.How does Aetrix verify that ATF1504AS-15AI44 is sourced from the original manufacturer or authorized distributors?
All ATF1504AS-15AI44 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-15AI44 meets industry standards.
7.What is the process for return or replacement of ATF1504AS-15AI44?
All ATF1504AS-15AI44 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1504AS-15AI44, 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-15AI44 part is unused and in its original packaging.
Return procedure for ATF1504AS-15AI44:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1504AS-15AI44 Tags
-
5M40ZE64C5N
Intel
-
ATF1502ASV-15AU44
Microchip Technology
-
5M80ZE64C5N
Intel
-
5M80ZT100C5N
Intel
-
ATF1502AS-10AU44
Microchip Technology
-
ATF1502AS-10JU44
Microchip Technology
-
5M80ZE64I5N
Intel
-
5M80ZT100I5N
Intel
-
LC4032V-75TN48C
Lattice Semiconductor Corporation
-
ATF1504ASV-15AU44
Microchip Technology
-
ATF1504AS-10JU44
Microchip Technology
-
5M160ZE64C5N
Intel
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