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Microchip Technology ATF1504AS-10AI44
- Part No.:
- ATF1504AS-10AI44
- Manufacturer:
- Microchip Technology
- Package:
- 44-TQFP
- Datasheet:
-
ATF1504AS-10AI44.pdf
- Description:
- IC CPLD 64MC 10NS 44TQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ATF1504AS-10AI44 from Microchip (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 in registered mode, supports JTAG-based in-system programming (ISP), and is packaged in a 44-lead TQFP for industrial temperature range (–40°C to +85°C). It serves as a logic integration solution in legacy PCI-compliant control planes and board-level glue logic.
For engineers reviewing the ATF1504AS-10AI44 datasheet, ATF1504AS-10AI44 pinout, ATF1504AS-10AI44 application, or ATF1504AS-10AI44 equivalent, key selection criteria include its 44-pin TQFP footprint, 5V/3.3V I/O compatibility, JTAG boundary-scan compliance (IEEE 1149.1a), programmable slew rate, and dual power-down modes (standby <10 µA and pin-controlled <10 mA).
Technical Context
The ATF1504AS-10AI44 implements a hierarchical CPLD architecture with four logic blocks, each fed by a global bus carrying all 68 possible inputs (including 64 macrocell feedbacks and dedicated pins) and regional foldback buses enabling 16-term cascaded sum-of-products. Its macrocell structure integrates OR/XOR/CASCADE logic, configurable D/T/latch flip-flops, and flexible output enable routing via dedicated OE pins or product terms.
It features three global clock inputs (GCLK1–GCLK3), input transition detection (ITD) on clocks/I/Os, fast registered input paths, and VCC power-up reset with selectable hysteresis. The device supports PCI-compliant drive strength without added skew and includes programmable pin-keeper circuits to eliminate external pull-ups on unused inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 64 macrocells - provides gate count equivalent to ~1000–1500 usable PLD gates for medium-complexity control logic. |
| Pin-to-pin Delay | 7.5 ns (–10 speed grade) - enables synchronous operation at ≤125 MHz in registered mode with timing closure on PCBs up to 6-layer stackup. |
| I/O Voltage Support | 3.3 V or 5.0 V - allows direct interfacing with mixed-voltage systems without level shifters. |
| Power Modes | Standby: <10 µA ("L" version); Power-down: <10 mA - reduces system idle power in battery-backed or energy-sensitive applications. |
| JTAG Compliance | IEEE Std. 1149.1-1990 & 1149.1a-1993 - enables boundary-scan testing and ISP without removing device from board. |
| PCI Compatibility | Meets PCI electrical specs - supports direct connection to PCI bus signals with controlled drive strength and low output skew. |
| Data Retention | 20 years - ensures nonvolatile configuration persistence across product lifecycle without refresh. |
Pinout & Package
ATF1504AS-10AI44 is housed in a 44-lead Thin Quad Flat Package (TQFP), 10 mm × 10 mm, 0.8 mm pitch, with exposed thermal pad (not electrically connected). Pin functions are defined per the official top-view diagram in Rev. 0950N–PLD–07/02.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 44 | I/O/TDI | JTAG Test Data Input - used for ISP programming and boundary-scan data entry; also configurable as general-purpose I/O when JTAG disabled. |
| 3, 42 | I/O/TMS | JTAG Test Mode Select - controls TAP controller state machine; pull-up option available to ensure default test mode on power-up. |
| 6, 41 | I/O/TDO | JTAG Test Data Output - serial output of scan chain data; high-impedance when not active. |
| 9, 24, 35 | VCC | Core power supply - must be decoupled locally; supports 5.0 V ±5% (commercial) or ±10% (industrial). |
| 4, 23, 34 | GND | Ground reference - requires low-inductance connection to PCB ground plane for signal integrity and EMI control. |
| 11, 22, 33 | GCLK1/GCLK2/GCLK3 | Global clock inputs - drive all macrocells synchronously; support ITD for glitch-free clock domain crossing. |
| 12, 32 | GCLR/I | Global clear input - asynchronous reset for all registers; may be OR'd with product term for conditional reset. |
| 13, 31 | OE1/OE2 | Output enable inputs - control tri-state behavior of groups of I/Os; configurable per macrocell via product term or pin. |
| 14, 30 | PD1/PD2 | Power-down control - high-active signal forcing device into <10 mA standby; disables logic transitions but holds register and output states. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable slew rate | Per-output switching speed control - reduces EMI and crosstalk on high-speed traces without sacrificing timing margin on critical paths. |
| Pin-keeper circuitry | Active-hold on floating inputs/I/Os - eliminates need for external pull-up/down resistors and associated DC leakage current. |
| Reduced-power bit per macrocell | Individual macrocell power gating - cuts dynamic power in unused logic sections, improving thermal performance in dense layouts. |
| Security fuse + User Signature | 16-bit accessible signature + one-time-programmable protection - enables design traceability while preventing unauthorized configuration copying. |
| VCC power-up reset | Hysteresis-selectable (Small/Large) reset threshold - ensures deterministic state machine initialization across varying VCC ramp profiles. |
Applications
| Industrial Control PLC Module | Legacy PCI Interface Adapter |
|---|---|
|
Use Scenario: Replacing discrete TTL/SSI logic in programmable logic controller backplane interface cards requiring field-upgradable timing and signal routing. IC Role / Device Role / Timing Role: Glue logic CPLD handling address decoding, interrupt arbitration, and bus handshaking between microcontroller and I/O modules. Use Value: Enables pin-locked firmware updates via JTAG ISP without hardware revision; 7.5 ns delay meets 33 MHz PCI timing budgets. |
Use Scenario: Bridging legacy ISA/PCI peripherals to modern embedded processors in test equipment and medical imaging subsystems. IC Role / Device Role / Timing Role: PCI-compliant I/O buffer and protocol translator managing REQ#/GNT#, FRAME#, and AD[31:0] signal timing alignment. Use Value: Delivers PCI-specified drive strength and low output skew without external buffers; supports hot-plug detection via ITD circuits. |
| Automated Test Equipment (ATE) Fixture | Avionics Board-Level Diagnostics |
|
Use Scenario: Configurable stimulus/response logic in ATE fixture controllers where signal routing must adapt to multiple DUT types. IC Role / Device Role / Timing Role: Reconfigurable pattern generator and comparator core synchronized to system clock with sub-10 ns resolution. Use Value: 64 macrocells provide sufficient resources for multi-channel parallel test vectors; programmable slew rate minimizes false triggers on sensitive analog inputs. |
Use Scenario: On-board health monitoring logic in flight-critical avionics modules requiring radiation-tolerant, nonvolatile configuration storage. IC Role / Device Role / Timing Role: Watchdog supervisor and bus monitor implementing cyclic redundancy checks on ARINC-429 or MIL-STD-1553B interfaces. Use Value: 20-year data retention and –40°C to +85°C operation meet DO-254 environmental requirements; security fuse prevents tampering with diagnostic firmware. |
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-macrocell Xilinx CoolRunner-II CPLD; 3.3 V only; no 5 V tolerance; 9 ns tPD; 2.5 mA typical ICC1. | Lacks 5 V I/O support and PCI compliance; better suited for low-power portable designs than industrial backplanes. | Select if 3.3 V-only operation and lower static power are prioritized over mixed-voltage interoperability. |
| EPM3064ATC44-10N | 64-macrocell Intel MAX 3000A CPLD; 3.3 V core/5 V tolerant I/O; 10 ns tPD; 25 mA ICC1; no built-in pin-keeper. | Requires external pull-ups; lacks integrated ITD and VCC power-up reset hysteresis options. | Choose when existing toolchain uses Quartus II and external reset management is acceptable. |
Compared with XCR3064XL-10VQ44C and EPM3064ATC44-10N, the ATF1504AS-10AI44 uniquely combines 5 V/3.3 V I/O flexibility, PCI compliance, pin-keeper circuits, and dual power-down modes-making it optimal for retrofitting legacy industrial systems where voltage compatibility and field programmability are mandatory.
Availability
ATF1504AS-10AI44 is available at Aetrix Electronics and suitable for industrial control PLC modules, legacy PCI interface adapters, and automated test equipment requiring stable component supply across extended product lifecycles.
Supply support for ATF1504AS-10AI44 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 legacy Atmel PLD products including the ATF1504AS family.
The ATF1504AS series was designed for high-reliability, field-upgradable logic integration in industrial, telecom, and aerospace applications where nonvolatile configuration, JTAG ISP, and mixed-voltage I/O are essential.
FAQ
What is the operating temperature range for ATF1504AS-10AI44?
The ATF1504AS-10AI44 is rated for industrial temperature operation from –40°C to +85°C, as confirmed by its "I" suffix and DC/AC specifications in the 0950N–PLD–07/02 datasheet. This makes ATF1504AS-10AI44 suitable for deployment in harsh environments such as factory automation controllers and outdoor telecommunications equipment.
Does ATF1504AS-10AI44 support both 3.3 V and 5 V I/O signaling?
Yes, ATF1504AS-10AI44 supports dual-voltage I/O: VCCIO can be configured for either 3.0–3.6 V or 4.75–5.25 V operation, allowing direct interfacing with both 3.3 V microcontrollers and legacy 5 V peripherals. This capability is explicitly specified in the DC Characteristics table of the ATF1504AS-10AI44 datasheet.
Can ATF1504AS-10AI44 be programmed in-system without removal from the PCB?
Yes, ATF1504AS-10AI44 features IEEE 1149.1-compliant JTAG in-system programmability (ISP) using the TDI, TDO, TCK, and TMS pins. This allows full configuration, reprogramming, and boundary-scan testing of ATF1504AS-10AI44 while soldered onto the target board-critical for field upgrades and manufacturing test.
What power-saving features does ATF1504AS-10AI44 offer beyond standard standby mode?
ATF1504AS-10AI44 provides three distinct low-power mechanisms: automatic <10 µA standby (L-mode), pin-controlled <10 mA power-down mode (via PD1/PD2), and per-macrocell reduced-power bit. These features allow granular power optimization-ATF1504AS-10AI44 can maintain register state during power-down while cutting dynamic current in unused logic sections.
Is ATF1504AS-10AI44 compatible with PCI bus electrical specifications?
Yes, ATF1504AS-10AI44 is explicitly certified PCI-compliant per the manufacturer's documentation, supporting required drive strength, output skew, and noise immunity without external components. Its programmable high-drive mode and 7.5 ns tPD ensure ATF1504AS-10AI44 meets timing constraints for 33 MHz PCI transactions.
ATF1504AS-10AI44 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:
- 10 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-10AI44 FAQ
1.How can I place an order for ATF1504AS-10AI44 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1504AS-10AI44 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-10AI44 reliable?
The price and inventory of ATF1504AS-10AI44 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1504AS-10AI44 is usually 5 days.
3.What payment methods are accepted for ATF1504AS-10AI44?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1504AS-10AI44 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1504AS-10AI44?
ATF1504AS-10AI44 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1504AS-10AI44 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-10AI44?
For technical support, including ATF1504AS-10AI44 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1504AS-10AI44 requirements.
6.How does Aetrix verify that ATF1504AS-10AI44 is sourced from the original manufacturer or authorized distributors?
All ATF1504AS-10AI44 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-10AI44 meets industry standards.
7.What is the process for return or replacement of ATF1504AS-10AI44?
All ATF1504AS-10AI44 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1504AS-10AI44, 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-10AI44 part is unused and in its original packaging.
Return procedure for ATF1504AS-10AI44:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1504AS-10AI44 Tags
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Intel
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Microchip Technology
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Microchip Technology
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Microchip Technology
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Lattice Semiconductor Corporation
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