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Microchip Technology ATF1502AS-10AI44
- Part No.:
- ATF1502AS-10AI44
- Manufacturer:
- Microchip Technology
- Package:
- 44-TQFP
- Datasheet:
-
ATF1502AS-10AI44.pdf
- Description:
- IC CPLD 32MC 10NS 44TQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ATF1502AS-10AI44 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-10AI44 datasheet, ATF1502AS-10AI44 pinout, ATF1502AS-10AI44 application, or ATF1502AS-10AI44 equivalent, key selection considerations include its 32-macrocell architecture, JTAG boundary-scan compliance (IEEE 1149.1a), PCI electrical compatibility, programmable slew rate, and dual standby modes (10 µA auto-standby and 1 mA pin-controlled).
Technical Context
The ATF1502AS-10AI44 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 JTAG-controlled boundary-scan testing. The device supports both standard and reduced-power macrocell modes, with tRPA adder (10–15 ns) applied to AC parameters when reduced-power mode is enabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 32 macrocells - provides gate count equivalent to ~1000 usable gates for medium-complexity glue logic integration |
| Pin-to-pin Delay | 7.5 ns (–10 speed grade) - enables reliable timing closure at system clock frequencies up to 125 MHz |
| Max Registered Frequency | 125 MHz - supports high-speed synchronous logic in data path and control state machines |
| Package | 44-lead TQFP - surface-mount footprint compatible with automated PCB assembly and thermal management in industrial environments |
| Supply Voltage | 4.75–5.25 V - operates within standard 5V TTL/PCI voltage tolerance, with 200 mA latch-up immunity |
| Standby Current | 10 µA (auto-standby "L" mode) - reduces quiescent power in battery-backed or low-duty-cycle systems |
| JTAG Compliance | IEEE Std. 1149.1-1990 & 1149.1a-1993 - enables production testability, debug visibility, and ISP without board removal |
Pinout & Package
ATF1502AS-10AI44 is housed in a 44-lead Thin Quad Flat Package (TQFP), measuring 10 mm × 10 mm × 1.4 mm, with 0.8 mm lead pitch and exposed thermal pad (not electrically connected). Pin numbering follows standard counter-clockwise orientation from top-left corner (Pin 1 marked by dot or bevel).
| Pin/Terminal | 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, 44 | Bi-directional I/O or dedicated input | All pins support configurable I/O direction; 32 serve as bi-directional I/O, 4 function as dedicated inputs (GCLK1/GCLK2/GCLK3/GCLR) or output enables (OE1/OE2) |
| GCLK1, GCLK2, GCLK3 | Global Clock Inputs | Three independent clock sources with ITD circuitry - enable asynchronous event detection and multi-domain clocking |
| GCLR | Global Clear Input | Asynchronous reset signal for all macrocell flip-flops - can be OR'd with product-term reset for selective clearing |
| PD1, PD2 | Power-down Control Inputs | Pin-driven entry into <1 mA power-down mode - latches internal states and holds outputs while blocking all non-PD inputs |
| TCK, TMS, TDI, TDO | JTAG Test Access Port | IEEE 1149.1-compliant boundary-scan and ISP interface - pins retain macrocell logic resources even when active |
Key Features
| Feature | Design Value |
|---|---|
| In-System Programmability (ISP) | Enables firmware updates and logic revisions post-deployment using standard JTAG tools - eliminates socketed PLD replacement |
| Programmable Slew Rate | Per-output control between fast (1–5 V/ns) and slow switching - reduces EMI in noise-sensitive mixed-signal PCB layouts |
| Pin-keeper Circuits | Prevents floating inputs/I/Os from drifting to indeterminate voltages - eliminates need for external pull-ups and associated DC leakage |
| PCI Electrical Compliance | Meets PCI v2.1 DC/AC specs including VOH ≥2.4 V @ –2 mA and VOL ≤0.55 V @ 3–6 mA - supports direct connection to PCI bus without level-shifting |
| Security Fuse & User Signature | One-time programmable fuse blocks readback of configuration; 16-bit user-accessible signature stores revision/date/project ID regardless of fuse state |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Translation |
|---|---|
Use Scenario: Replacing discrete 74-series logic in programmable logic controller backplanes to consolidate address decoding, interrupt arbitration, and status multiplexing. IC Role / Device Role / Timing Role: Configurable glue logic CPLD implementing synchronous register banks and combinatorial decode trees with deterministic 7.5 ns propagation. Use Value: Reduces BOM count by >80% versus discrete solutions while maintaining full 5V TTL compatibility and industrial temperature operation (–40°C to +85°C). |
Use Scenario: Bridging ISA or VMEbus peripherals to modern microcontrollers via protocol-aware signal conditioning and handshaking logic. IC Role / Device Role / Timing Role: State-machine-based bus translator with programmable wait-state insertion, address filtering, and edge-triggered interrupt generation. Use Value: Enables reuse of legacy industrial hardware without redesigning host interfaces - leverages ATF1502AS-10AI44's 125 MHz registered performance and JTAG debug visibility. |
| PCI Add-in Card Control Logic | Automated Test Equipment (ATE) Pattern Generator |
Use Scenario: Implementing configuration registers, IDSEL decoding, and burst-length control logic on PCI expansion cards for instrumentation and data acquisition. IC Role / Device Role / Timing Role: PCI-compliant control hub managing command decoding, status reporting, and bus arbitration with sub-10 ns timing margins. Use Value: Meets PCI v2.1 electrical requirements natively - eliminates external bus transceivers and simplifies layout while supporting hot-plug initialization sequences. |
Use Scenario: Generating synchronized stimulus waveforms and capture masks for digital IC functional testing across multiple DUT channels. IC Role / Device Role / Timing Role: High-reliability pattern sequencer with deterministic setup/hold timing (tSU = 3 ns, tH = 2 ns) and glitch-free clock domain crossing. Use Value: Delivers repeatable, traceable test vectors via JTAG-programmed configuration - critical for production yield analysis and failure root-cause investigation. |
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, 100-pin VQFP - higher density but incompatible voltage and package | Targets low-voltage, high-pin-count designs requiring >32 macrocells; lacks native 5V PCI drive | Select only if migrating to 3.3V system architecture and needing expanded logic capacity |
| XC9572XL-10VQ44C | 72 macrocells, 3.3V I/O, 44-pin VQFP - same footprint but different voltage and JTAG implementation | Suitable for cost-sensitive 3.3V systems where PCI compliance is not required | Choose when replacing ATF1502AS-10AI44 in non-PCI contexts and board layout allows I/O voltage shift |
Compared with XCR3064XL-10VQ44C and XC9572XL-10VQ44C, the ATF1502AS-10AI44 uniquely delivers native 5V PCI signaling, auto-standby power management, and pin-keeper functionality in a drop-in 44-pin TQFP - making it irreplaceable for legacy industrial bus interface upgrades requiring zero hardware modification.
Availability
ATF1502AS-10AI44 is available at Aetrix Electronics and suitable for industrial PLCs, PCI add-in cards, and legacy bus interface translation requiring stable component supply, long-term lifecycle assurance, and guaranteed 5V-compatible CPLD functionality.
Supply support for ATF1502AS-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
Atmel (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and programmable logic devices for industrial, automotive, and communications markets.
The ATF1502AS series was designed as a high-density, in-system programmable CPLD targeting 5V system integration, PCI compliance, and field-upgradable logic in mission-critical industrial control applications.
FAQ
What is the operating temperature range for ATF1502AS-10AI44?
The ATF1502AS-10AI44 is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the Absolute Maximum Ratings table and DC Operating Conditions section of the official datasheet (Rev. 0995J–PLD–09/02), making it suitable for harsh-environment applications such as factory automation and outdoor instrumentation where thermal stability is critical. The "I" suffix in the part number explicitly denotes industrial-grade qualification.
Does ATF1502AS-10AI44 support PCI bus interfacing without external components?
Yes, ATF1502AS-10AI44 natively supports PCI v2.1 electrical specifications, including VOH ≥2.4 V at –2 mA and VOL ≤0.55 V at 3–6 mA, as verified in the PCI DC/AC Characteristics tables. Its programmable high-drive outputs eliminate the need for external bus transceivers, and its 5V-tolerant I/O structure ensures direct connection to PCI slots - a capability confirmed in the "PCI Compliance" section of the datasheet.
How does the power-down mode function on ATF1502AS-10AI44?
The ATF1502AS-10AI44 implements pin-controlled power-down via PD1/PD2 inputs: when either pin is driven high, supply current drops below 1 mA, internal logic states are latched, and outputs retain their last valid value or high-Z state. This behavior is documented in the Power-down Mode section and validated by AC timing parameters tIVDH, tDLIV, and ICC2 measurements under "PD" mode conditions.
Can ATF1502AS-10AI44 be programmed in-system after soldering to the PCB?
Yes, ATF1502AS-10AI44 supports full in-system programming (ISP) via its 4-pin JTAG interface (TCK/TMS/TDI/TDO), compliant with IEEE Std. 1149.1a-1993. The device remains programmable without removal from the board, and its boundary-scan cells allow full visibility into I/O states during test - a capability detailed in the "JTAG-BST/ISP Overview" and "ISP Programming Protection" sections of the datasheet.
What packaging and lead finish does ATF1502AS-10AI44 use?
ATF1502AS-10AI44 is supplied in a 44-lead Thin Quad Flat Package (TQFP) with lead finish specified as matte tin (Sn) per JEDEC J-STD-020, confirmed by Atmel's packaging documentation and distributor listings. The package dimensions are 10 mm × 10 mm × 1.4 mm, with 0.8 mm lead pitch and RoHS-compliant construction - consistent across all commercial and industrial variants of the ATF1502AS family.
ATF1502AS-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:
- 32
- 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)
ATF1502AS-10AI44 FAQ
1.How can I place an order for ATF1502AS-10AI44 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1502AS-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 ATF1502AS-10AI44 reliable?
The price and inventory of ATF1502AS-10AI44 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1502AS-10AI44 is usually 5 days.
3.What payment methods are accepted for ATF1502AS-10AI44?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1502AS-10AI44 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1502AS-10AI44?
ATF1502AS-10AI44 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1502AS-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 ATF1502AS-10AI44?
For technical support, including ATF1502AS-10AI44 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1502AS-10AI44 requirements.
6.How does Aetrix verify that ATF1502AS-10AI44 is sourced from the original manufacturer or authorized distributors?
All ATF1502AS-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 ATF1502AS-10AI44 meets industry standards.
7.What is the process for return or replacement of ATF1502AS-10AI44?
All ATF1502AS-10AI44 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1502AS-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 ATF1502AS-10AI44 part is unused and in its original packaging.
Return procedure for ATF1502AS-10AI44:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1502AS-10AI44 Tags
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