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Microchip Technology ATF1500A-10AI
- Part No.:
- ATF1500A-10AI
- Manufacturer:
- Microchip Technology
- Package:
- 44-TQFP
- Datasheet:
-
ATF1500A-10AI.pdf
- Description:
- IC CPLD 32MC 10NS 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,889
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Product details
Overview
ATF1500A-10AI from Atmel (now Microchip) is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 32 macrocells, 32 I/O pins, and four dedicated global control inputs. It delivers 7.5 ns maximum pin-to-pin delay, supports registered operation up to 76.9 MHz, and operates across –40°C to +85°C for industrial applications including legacy system upgrades and board-level glue logic replacement.
For engineers reviewing the ATF1500A-10AI datasheet, ATF1500A-10AI pinout, ATF1500A-10AI application, or ATF1500A-10AI equivalent, this device serves as a reprogrammable, Flash-based alternative to TTL/SSI/MSI logic and classic PLDs-offering pin-keeper inputs, programmable slew rate, and pin-controlled power-down mode without requiring PCB redesign.
Technical Context
The ATF1500A-10AI implements a fully connected global bus architecture feeding all 32 macrocells with 68-bit signal availability (32 I/O + 4 dedicated inputs + 32 buried feedbacks), enabling flexible logic placement and eliminating pinout changes during design iteration. Each macrocell integrates five product terms, OR/XOR/cascade logic, D/T/latch-configurable flip-flops, and individual output enable/slew control.
It features dual-clocking support (global CLK pin or product-term clock), asynchronous reset (GCLR), two active-low output enables (OE1/OE2), and a dedicated PD pin for hardware-triggered power-down mode (<10 mA standby). Pin-keeper circuits prevent floating I/O states, removing need for external pull-ups while maintaining DC noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 32 macrocells with 5 product terms each, supporting up to 36 global inputs and buried feedback routing |
| Max Pin-to-Pin Delay | 7.5 ns - enables timing-critical combinatorial paths in legacy interface bridging |
| Max Registered Speed | 76.9 MHz (tPS = 13 ns) - sufficient for synchronous control logic in industrial controllers |
| Supply Voltage | 5 V ±10% - compatible with standard TTL/CMOS logic rails and legacy 5 V systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Power-Down Current | <10 mA when PD pin driven high - reduces system idle power without firmware intervention |
| I/O Slew Control | Per-pin programmable slow/fast edge - mitigates EMI on non-critical signals while preserving timing on critical paths |
Pinout & Package
ATF1500A-10AI is available in 44-lead TQFP (44A) and PLCC (44J) packages. Both are 5 V-compatible, RoHS-compliant, and share identical pin functions and numbering. The TQFP variant measures 10 mm × 10 mm with 0.8 mm lead pitch; PLCC uses J-leads with 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK | Global clock input | Primary synchronous edge-trigger source for all macrocells; rising-edge sensitive |
| GCLR | Active-low global register reset | Asynchronously clears all flip-flops; may be OR'd with product-term reset for selective control |
| OE1, OE2 | Active-low output enables | Selectively disable groups of I/O buffers; configurable per macrocell via logic design file |
| PD | Power-down control (active high) | Hardware-initiated low-power mode; disables internal logic transitions while latching outputs and states |
| VCC / GND | Power supply and ground | Four VCC and three GND pins distributed for noise reduction and current sharing across I/O banks |
| I/O (pins 1–32, 34–35, 37–43) | Bi-directional logic interface | Programmable as input, output, or bidirectional; includes pin-keeper circuitry to prevent floating |
Key Features
| Feature | Design Value |
|---|---|
| Flash-based reprogrammability | 100 program/erase cycles with 20-year data retention - enables field updates and design iteration without component replacement |
| Pin-keeper inputs/I/Os | Eliminates need for external pull-up resistors on unused lines, reducing BOM count and static power draw |
| Programmable output slew rate | Per-macrocell slow/fast selection - lowers EMI on non-timing-critical outputs without sacrificing speed on critical paths |
| Global/regional bus architecture | 68-bit global bus + regional foldback buses - ensures full signal accessibility to all macrocells, simplifying place-and-route |
| Security fuse | Prevents unauthorized read-back of JEDEC fuse pattern while retaining access to 160-bit user signature |
Applications
| Industrial Control Logic | Legacy System Interface Bridging |
|---|---|
Use Scenario: Replacing discrete TTL logic and PALs in PLC I/O modules and motion controller backplanes. IC Role / Device Role / Timing Role: Glue logic CPLD implementing address decoding, bus arbitration, and status multiplexing between microcontrollers and peripheral ICs. Use Value: Reduces component count by >70% versus discrete solutions while maintaining 5 V compatibility and industrial temperature operation. |
Use Scenario: Adapting legacy parallel interfaces (e.g., ISA, PC/104) to modern microcontrollers in test equipment and medical devices. IC Role / Device Role / Timing Role: Protocol translator and signal conditioner handling handshaking, strobe synchronization, and level shifting. Use Value: Enables reuse of aging PCBs and firmware without redesign; 7.5 ns delay supports 10+ MHz bus timing margins. |
| Power Management Sequencing | Configurable Reset Distribution |
Use Scenario: Coordinating power-up sequencing and fault monitoring across multiple voltage rails in industrial power supplies. IC Role / Device Role / Timing Role: State-machine-based sequencer using registered logic to enforce precise delay intervals and interlock conditions. Use Value: Integrates timing, monitoring, and control into single device; power-down mode cuts idle current to <10 mA during standby. |
Use Scenario: Generating synchronized, glitch-free reset signals for multiple ASICs/FPGAs in telecom line cards. IC Role / Device Role / Timing Role: Reset synchronizer and distributor with programmable assertion width, deassertion delay, and polarity inversion. Use Value: Eliminates external RC networks and discrete logic; pin-keeper inputs ensure clean reset assertion even with marginal board layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1502AS-10AI | Pin-compatible upgrade with higher density (64 macrocells), same 44A/44J footprint and 5 V supply | Supports larger logic functions without board change; retains identical timing and I/O structure | Select when future scalability or increased logic capacity is required within same thermal and layout constraints |
| XC9536XL-10VQ44I | Xilinx CoolRunner-II family; 3.3 V core, 5 V tolerant I/O; 36 macrocells; 7.5 ns tPD | Lower static power (10 µA typical), but requires level-shifting for pure 5 V systems and lacks pin-keeper circuitry | Prefer for new designs targeting lower power and longer lifecycle; avoid if 5 V-only interface integrity is mandatory |
Compared with ATF1500A-10AI, ATF1502AS-10AI offers direct pin- and function-compatible expansion, while XC9536XL-10VQ44I trades 5 V native operation and pin-keeper robustness for lower power and newer architecture-requiring voltage translation and external pull-ups in legacy 5 V systems.
Availability
ATF1500A-10AI is available at Aetrix Electronics and suitable for industrial control logic, legacy system interface bridging, and power management sequencing requiring stable component supply and long-term obsolescence mitigation.
Supply support for ATF1500A-10AI 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 (acquired by Microchip Technology in 2016) designed high-reliability, Flash-based programmable logic and microcontroller solutions for industrial, automotive, and communications markets.
The ATF1500A series was developed to replace TTL, SSI, MSI, and classic PLDs in 5 V systems-emphasizing reprogrammability, industrial temperature support, and seamless integration into legacy board designs.
FAQ
What is the operating voltage range for the ATF1500A-10AI?
The ATF1500A-10AI operates from 5 V ±10%, i.e., 4.5 V to 5.5 V, matching standard TTL/CMOS logic rails. This specification is validated across its full industrial temperature range (–40°C to +85°C) and applies to both TQFP and PLCC package variants of the ATF1500A-10AI.
Does the ATF1500A-10AI support in-system programming?
Yes, the ATF1500A-10AI supports in-system programming via JTAG (IEEE 1149.1) using standard boundary-scan tools. Its Flash technology allows full reconfiguration without removal from the PCB, and the ATF1500A-10AI retains configuration through power cycles with no external memory required.
How does the pin-keeper feature work on the ATF1500A-10AI?
The ATF1500A-10AI includes programmable pin-keeper circuits on all I/O and input pins. When enabled in the design file, these circuits latch the last driven logic state (high or low) if the pin becomes floating-preventing intermediate voltages, reducing noise, and eliminating need for external pull-up resistors. The ATF1500A-10AI pin-keeper is disabled by default and must be explicitly activated.
What is the difference between ATF1500A-10AI and ATF1500AL-10AI?
The ATF1500A-10AI uses standard power architecture with 70–100 mA standby current, while the ATF1500AL-10AI incorporates advanced low-power circuitry achieving ≤5 mA standby. Both share identical logic resources, pinout, and timing specs (7.5 ns tPD), but the "L" suffix denotes optimized quiescent current for battery-sensitive or thermally constrained applications.
Is the ATF1500A-10AI still in production or supported by Microchip?
The ATF1500A-10AI is listed as obsolete by Microchip with last-time-buy date of September 30, 2005. However, Aetrix Electronics maintains verified, traceable inventory of original Atmel-manufactured ATF1500A-10AI units for legacy system sustainment, including full documentation and application support for ongoing production use.
ATF1500A-10AI 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 100 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)
ATF1500A-10AI FAQ
1.How can I place an order for ATF1500A-10AI through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1500A-10AI 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 ATF1500A-10AI reliable?
The price and inventory of ATF1500A-10AI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1500A-10AI is usually 5 days.
3.What payment methods are accepted for ATF1500A-10AI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1500A-10AI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1500A-10AI?
ATF1500A-10AI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1500A-10AI 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 ATF1500A-10AI?
For technical support, including ATF1500A-10AI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1500A-10AI requirements.
6.How does Aetrix verify that ATF1500A-10AI is sourced from the original manufacturer or authorized distributors?
All ATF1500A-10AI 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 ATF1500A-10AI meets industry standards.
7.What is the process for return or replacement of ATF1500A-10AI?
All ATF1500A-10AI units undergo pre-shipment inspection (PSI). If there is an issue with ATF1500A-10AI, 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 ATF1500A-10AI part is unused and in its original packaging.
Return procedure for ATF1500A-10AI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1500A-10AI Tags
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5M40ZE64C5N
Intel
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ATF1502ASV-15AU44
Microchip Technology
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Intel
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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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Microchip Technology
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Intel
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