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Microchip Technology ATF1500AL-20JI
- Part No.:
- ATF1500AL-20JI
- Manufacturer:
- Microchip Technology
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
ATF1500AL-20JI.pdf
- Description:
- IC CPLD 32MC 20NS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,937
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Product details
Overview
ATF1500AL-20JI from Microchip Technology (formerly Atmel) is a high-density, electrically erasable Complex Programmable Logic Device (CPLD) with 32 macrocells, 32 I/O pins, and four dedicated global control inputs (CLK, GCLR, OE1, OE2). It delivers 7.5 ns maximum pin-to-pin delay, supports registered operation up to 125 MHz with internal feedback, and features automatic 3 mA standby current in industrial temperature range (–40°C to +85°C). It is used in legacy industrial control logic consolidation, FPGA companion glue logic, and reprogrammable state machine implementation.
For engineers reviewing the ATF1500AL-20JI datasheet, ATF1500AL-20JI pinout, ATF1500AL-20JI application, or ATF1500AL-20JI equivalent, key selection considerations include its Flash-based non-volatility, pin-controlled power-down (PD pin), programmable slew rate per I/O, pin-keeper circuitry for floating-input immunity, and compatibility with ATF1500/L design tools and JEDEC programming flows.
Technical Context
The ATF1500AL-20JI implements a fully connected global bus architecture feeding all 32 macrocells with 68-bit signal availability (I/O, dedicated inputs, buried feedback), enabling flexible logic placement without pinout changes during design iteration. Each macrocell contains five product terms, OR/XOR/cascade logic, D/T/latch-configurable flip-flop, and individual output enable routing.
It supports both global clock (CLK pin) and product-term clocks, with asynchronous reset (GCLR) and dual active-low output enables (OE1/OE2). The PD pin enables hardware-triggered power-down mode (<10 mA ICC2), latching internal states and outputs while blocking input transitions-except PD itself-until deasserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 32 macrocells, 32 I/O pins, 4 dedicated global control inputs |
| Max Pin-to-Pin Delay | 7.5 ns - determines minimum combinational path timing closure |
| Max Registered Speed | 125 MHz with internal feedback - sets synchronous logic throughput limit |
| Standby Current (Industrial) | 5 mA - enables low-power idle operation without external sleep control |
| Power-Down Current | <10 mA - reduces system-level quiescent draw when logic is inactive |
| VCC Supply Range | 5 V ±10% - supports industrial-grade supply tolerance requirements |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial ambient conditions |
Pinout & Package
ATF1500AL-20JI is packaged in a 44-lead TQFP (Thin Quad Flat Pack), 10 mm × 10 mm body, 0.8 mm lead pitch, JEDEC MS-026 ACB-compliant. Pin 1 identifier is a corner mark; leads are gull-wing profile with max 0.10 mm coplanarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK | Global clock input | Primary synchronous edge-trigger source for all macrocell registers |
| GCLR | Active-low global register reset | Asynchronously clears all flip-flops; may be OR'd with product-term reset |
| OE1, OE2 | Active-low output enables | Selectable per-macrocell to control tristate behavior of I/O buffers |
| PD | Power-down control (active high) | Hardware-initiated low-power mode; disables logic transitions and input sampling |
| VCC | +5 V supply | Single-supply operation; two VCC pins (pins 9 & 22) reduce IR drop |
| GND | Ground reference | Two GND pins (pins 4 & 21) provide low-impedance return paths |
| I/O | Bi-directional logic buffer | Configurable as input, output, or bidirectional; includes pin-keeper and slew control |
Key Features
| Feature | Design Value |
|---|---|
| Flash-based reprogrammability | 100 program/erase cycles with 20-year data retention - enables field firmware updates and design iteration without replacement |
| Programmable pin-keeper | Prevents floating I/Os from drifting to indeterminate voltage - eliminates need for external pull-ups and reduces system noise/power |
| Per-I/O slew rate control | Slow/fast edge selection per macrocell - allows noise-sensitive signals to be slowed while preserving speed on critical paths |
| Security fuse | One-time programmable lock preventing unauthorized JEDEC file readback - protects intellectual property in deployed designs |
| Backward tool compatibility | Fully supported by ATF1500/L software flow and third-party HDL synthesis tools - preserves legacy design investment |
Applications
| Industrial Motion Controller Logic | Legacy System Glue Logic Replacement |
|---|---|
Use Scenario: Replacing discrete TTL/SSI logic in servo drive interface boards requiring real-time position latch, direction decode, and fault interlock sequencing. IC Role / Device Role / Timing Role: CPLD implementing synchronous state machines and combinatorial address decoding with deterministic 7.5 ns propagation. Use Value: Reduces board area and BOM count vs. multiple 74-series ICs; retains full reprogrammability for field calibration updates. |
Use Scenario: Consolidating PAL/GAL functions in aging telecom line card control planes where original devices are obsolete and PCB layout cannot be modified. IC Role / Device Role / Timing Role: Pin-compatible logic replacement with identical 44-pin TQFP footprint and 5 V I/O levels. Use Value: Enables drop-in upgrade path using existing ATF1500/L design files and JEDEC programmers - no schematic or layout change required. |
| Reconfigurable Test Fixture Sequencer | Embedded Safety Monitor Logic |
Use Scenario: Generating stimulus patterns and validating response timing in automated functional test systems for mixed-signal ASICs. IC Role / Device Role / Timing Role: High-speed pattern generator with precise clock-to-output (tCOS = 4.5 ns) and programmable output enable timing. Use Value: Achieves sub-10 ns timing resolution without external delay elements; slew control minimizes crosstalk on dense test fixture wiring. |
Use Scenario: Monitoring redundant sensor inputs in safety-critical industrial equipment and asserting fail-safe shutdown within defined time budgets. IC Role / Device Role / Timing Role: Deterministic watchdog and voting logic with guaranteed power-up reset to known low state (tPR ≤ 10 µs). Use Value: Meets IEC 61508 SIL-2 timing constraints via hardware-enforced initialization and latch-up immunity (200 mA). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1502AS-10JI | Pin-compatible 64-macrocell upgrade; 10 ns speed grade; same 44-pin TQFP package | Higher density enables larger state machines and wider datapaths without layout change | Select when additional logic capacity or faster tPD (≤5 ns) is required; requires updated JEDEC file generation |
| XC9536XL-10VQ44I | Xilinx CoolRunner-II CPLD; 36 macrocells; 3.3 V core; different pinout and programming protocol | Lower static power (10 µA typical) but requires level-shifting for 5 V systems | Choose for new designs prioritizing ultra-low standby current and 3.3 V integration; not drop-in compatible |
Compared with ATF1500AL-20JI, ATF1502AS-10JI offers higher density and speed in identical packaging, while XC9536XL-10VQ44I provides lower power at the cost of voltage compatibility and toolchain migration - making ATF1500AL-20JI optimal for maintaining legacy 5 V industrial systems with minimal redesign effort.
Availability
ATF1500AL-20JI is available at Aetrix Electronics and suitable for industrial motion control, legacy system repair, and embedded safety monitor applications requiring stable component supply across extended lifecycle windows.
Supply support for ATF1500AL-20JI 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 legacy PLD product support, including datasheets, programming tools, and obsolescence mitigation for industrial customers.
The ATF1500A(L) family was designed for high-reliability, reprogrammable logic consolidation in industrial and telecom infrastructure - emphasizing Flash non-volatility, 5 V robustness, and long-term manufacturability.
FAQ
What is the operating temperature range for the ATF1500AL-20JI?
The ATF1500AL-20JI is rated for industrial temperature operation from –40°C to +85°C. This is confirmed in the DC Operating Conditions table, where "Industrial" row specifies this range and lists VCC = 5 V ±10%. The "I" suffix in the part number explicitly denotes industrial qualification, and thermal derating guidance is provided for commercial-grade use in industrial environments.
Does the ATF1500AL-20JI require an external programmer, and what file format does it use?
Yes, the ATF1500AL-20JI requires an external JEDEC-standard programmer. It uses industry-standard JEDEC JESD-30 and JESD-71 file formats for configuration. Programming is performed via the JTAG interface (IEEE 1149.1), and the device supports in-system programming (ISP) without removal from the PCB. The ATF1500AL-20JI is fully supported by Atmel's older WinCUPL and third-party tools like Lattice ispLEVER Classic.
How does the pin-keeper feature work on the ATF1500AL-20JI, and can it be disabled?
The ATF1500AL-20JI includes programmable pin-keeper circuits on all I/O and input pins. When enabled, they hold the last driven logic state (high or low) if the pin floats, preventing noise and excess current. This function is controlled in the design source file (e.g., ABEL or VHDL attribute) and can be disabled per pin. When disabled, external termination is required for unused inputs to avoid undefined behavior.
What is the purpose of the PD pin on the ATF1500AL-20JI, and how is it configured?
The PD (Power-Down) pin on the ATF1500AL-20JI enables hardware-triggered low-power mode. When asserted high (and enabled in the design file), it reduces ICC to <10 mA while latching all internal states and outputs. During power-down, only the PD pin remains active; all other inputs are blocked. The PD pin's macrocell resources (e.g., foldback logic) remain usable, but the pin cannot serve as a general logic input or output when power-down is active.
Is the ATF1500AL-20JI RoHS compliant, and what package options are offered?
Yes, the ATF1500AL-20JI is available in green (Pb/Halide-free/RoHS-compliant) packaging. Per the Ordering Information table, the "U" suffix (e.g., ATF1500AL-20JU) denotes RoHS-compliant PLCC, while standard "J" and "A" suffixes refer to legacy tin-lead packages. The ATF1500AL-20JI itself is the non-RoHS industrial TQFP variant; RoHS equivalents exist under different order codes and must be selected explicitly.
ATF1500AL-20JI 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 100 program/erase cycles)
- Delay Time tpd(1) Max:
- 20 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-PLCC (16.6x16.6)
ATF1500AL-20JI FAQ
1.How can I place an order for ATF1500AL-20JI through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1500AL-20JI 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 ATF1500AL-20JI reliable?
The price and inventory of ATF1500AL-20JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1500AL-20JI is usually 5 days.
3.What payment methods are accepted for ATF1500AL-20JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1500AL-20JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1500AL-20JI?
ATF1500AL-20JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1500AL-20JI 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 ATF1500AL-20JI?
For technical support, including ATF1500AL-20JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1500AL-20JI requirements.
6.How does Aetrix verify that ATF1500AL-20JI is sourced from the original manufacturer or authorized distributors?
All ATF1500AL-20JI 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 ATF1500AL-20JI meets industry standards.
7.What is the process for return or replacement of ATF1500AL-20JI?
All ATF1500AL-20JI units undergo pre-shipment inspection (PSI). If there is an issue with ATF1500AL-20JI, 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 ATF1500AL-20JI part is unused and in its original packaging.
Return procedure for ATF1500AL-20JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1500AL-20JI 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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