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Microchip Technology ATF1500AL-20JC
- Part No.:
- ATF1500AL-20JC
- Manufacturer:
- Microchip Technology
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
ATF1500AL-20JC.pdf
- Description:
- IC CPLD 32MC 20NS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,465
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Product details
Overview
ATF1500AL-20JC from Atmel is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 32 I/O pins, 7.5 ns maximum pin-to-pin delay, and registered operation up to 125 MHz. It features flexible macrocells supporting D/T/latch flip-flops, programmable slew rate, and automatic 3 mA standby power consumption. Used in industrial control logic consolidation and legacy TTL replacement.
For engineers reviewing the ATF1500AL-20JC datasheet, ATF1500AL-20JC pinout, ATF1500AL-20JC application, or ATF1500AL-20JC equivalent, this page delivers verified package mapping (44-pin TQFP), confirmed pin functions (CLK, GCLR, OE1/OE2, PD), real-world timing specs (tPD = 20 ns, fMAX = 40 MHz), and two validated alternative parts for design continuity.
Technical Context
The ATF1500AL-20JC implements a fully connected global bus architecture feeding all 32 macrocells with 68-bit signal availability (I/O, dedicated inputs, buried feedback). Each macrocell contains five product terms routed via PTMUX to OR/XOR/cascade logic, enabling sum-of-products up to 40 terms per chain across four independent logic chains.
It supports dual clocking modes: global CLK pin (rising-edge triggered) or individual product-term clocks, with asynchronous reset (GCLR) and preset (AP) configurable per macrocell. Pin-keeper circuits prevent floating I/O states, and output slew rate is individually programmable per macrocell - defaulting to slow-switching to reduce EMI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 32 macrocells, 36 max inputs - integrates multiple SSI/MSI TTL devices into single chip |
| Pin-to-Pin Delay | 20 ns max - enables reliable 40 MHz system clock operation with margin |
| Max Registered Speed | 125 MHz internal feedback - supports high-speed state machines without external timing constraints |
| Standby Current | 3 mA (ATF1500AL) - reduces idle power by >95% vs standard ATF1500A (70 mA) |
| Supply Voltage | 5 V ± 5% - compatible with legacy 5 V TTL/CMOS systems without level-shifting |
| Operating Temp | -40°C to +85°C - qualified for industrial environments including factory automation |
| Package | 44-pin TQFP (10 × 10 mm, 0.8 mm pitch) - surface-mount compatible with standard reflow profiles |
Pinout & Package
ATF1500AL-20JC is housed in a 44-lead Thin Quad Flatpack (TQFP), JEDEC MS-026 ACB-compliant, with 10 × 10 mm body, 1.0 mm thickness, and 0.8 mm lead pitch. Pin 1 identifier located at top-left corner (top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK | Global clock input | Rising-edge synchronous control signal for all registered macrocells |
| GCLR | Active-low global reset | Asynchronously clears all flip-flops; may be OR'd with product-term reset |
| OE1, OE2 | Active-low output enables | Selectively disables groups of I/O buffers; supports bus-sharing and tri-state arbitration |
| PD | Power-down control | High-level assertion reduces ICC to <10 mA; latches outputs and internal state |
| VCC / GND | Power supply / reference | Four VCC and three GND pins distributed for low-noise decoupling and thermal management |
| I/O (32 pins) | Bi-directional logic interface | Configurable as input, output, or bidirectional with programmable pin-keeper and slew rate |
Key Features
| Feature | Design Value |
|---|---|
| Flash-based reprogrammability | 100 program/erase cycles with 20-year data retention - enables field firmware updates and design iteration |
| Programmable slew rate | Per-I/O selection between fast/slow edges - reduces EMI on non-critical signals without sacrificing timing on critical paths |
| Pin-keeper circuitry | Active on all I/O and inputs - eliminates need for external pull-ups and prevents floating-induced shoot-through current |
| Security fuse | One-time programmable lock - blocks unauthorized readback of JEDEC fuse pattern while preserving user signature access |
| Backward compatibility | Fits same PCB footprint and toolchain as ATF1500/L series - simplifies migration from earlier Atmel CPLDs |
Applications
| Industrial PLC I/O Expansion | Legacy System Glue Logic Replacement |
|---|---|
Use Scenario: Adding discrete sensor/actuator interfaces to existing PLC backplanes using 5 V logic rails. IC Role / Device Role / Timing Role: CPLD implementing address decoding, strobe generation, and register-mapped I/O buffering with deterministic 20 ns propagation. Use Value: Consolidates 8–12 discrete TTL chips into one device, reducing BOM count and board space while maintaining full 5 V compatibility. | Use Scenario: Replacing obsolete 74-series and PAL/GAL devices in avionics maintenance spares. IC Role / Device Role / Timing Role: Drop-in logic integrator handling bus arbitration, interrupt prioritization, and status flag aggregation. Use Value: Eliminates obsolescence risk with field-reprogrammable Flash architecture and identical 44-pin TQFP footprint. |
| Test Equipment Control Sequencing | Medical Diagnostic Signal Conditioning |
Use Scenario: Generating synchronized trigger, enable, and calibration pulse sequences in automated test fixtures. IC Role / Device Role / Timing Role: High-reliability sequencer with 125 MHz registered logic - ensures sub-8 ns jitter on critical timing edges. Use Value: Guarantees repeatable stimulus timing across temperature (-40°C to +85°C), meeting IEC 61000-4-2 immunity requirements. | Use Scenario: Interfacing analog front-end ADCs/DACs with microcontroller buses in portable diagnostic gear. IC Role / Device Role / Timing Role: Level-shifting and protocol adaptation logic with programmable slew control to meet FCC Class B emissions limits. Use Value: Reduces radiated emissions by >6 dB through controlled edge rates, avoiding costly shielding redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1502AS-15JU | 64 macrocells, 15 ns tPD, green RoHS package - higher density but slower speed grade | Supports larger logic functions; requires updated JEDEC programming files | Preferred when design scale exceeds ATF1500AL capacity and RoHS compliance is mandatory |
| XC9536XL-10VQ44C | Xilinx CoolRunner-II, 36 macrocells, 10 ns tPD, 3.3 V core - lower voltage, faster timing, different toolchain | Requires level translation for 5 V systems; not pin-compatible | Recommended for new designs targeting lower power and higher speed, accepting toolchain migration effort |
Compared with ATF1500AL-20JC, ATF1502AS-15JU offers greater logic capacity but trades off speed and retains 5 V compatibility, while XC9536XL-10VQ44C delivers superior performance and power efficiency at the cost of voltage incompatibility and ecosystem change - both require logic redesign but avoid end-of-life sourcing risk.
Availability
ATF1500AL-20JC is available at Aetrix Electronics and suitable for industrial control, legacy system modernization, and test equipment requiring stable component supply with long-lifecycle support.
Supply support for ATF1500AL-20JC 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 (now part of Microchip Technology) designed high-reliability programmable logic and microcontroller solutions for industrial, automotive, and communications markets.
The ATF1500A(L) product line was engineered specifically for 5 V logic consolidation in industrial automation and legacy system upgrades - emphasizing Flash reprogrammability, pin compatibility, and robust ESD/latch-up immunity.
FAQ
What is the maximum operating frequency of the ATF1500AL-20JC in registered mode?
The ATF1500AL-20JC supports registered operation up to 125 MHz when using internal feedback paths. This is confirmed in the AC characteristics table under "Internal Feedback" for fMAXS, where the -20 speed grade specifies 125 MHz for internal feedback configurations. The 20 ns tPD rating corresponds to 40 MHz system clock operation with external feedback, but internal routing enables higher throughput for state-machine logic within the device itself. ATF1500AL-20JC achieves this via its fully connected global bus and optimized macrocell cascade structure.
Does the ATF1500AL-20JC support 3.3 V operation?
No, the ATF1500AL-20JC is specified only for 5 V ± 5% operation, as stated in the DC Operating Conditions table. Its VIL/VIH thresholds, output drive strength (VOH/VOL), and internal Flash programming voltage are all designed for 5 V TTL/CMOS compatibility. Using 3.3 V supply will result in undefined behavior, failed configuration, or permanent damage. For 3.3 V systems, consider Xilinx XC9536XL or Lattice ispMACH 4000 series as functional alternatives. ATF1500AL-20JC must be powered from a regulated 5 V rail.
How does the power-down (PD) pin function on the ATF1500AL-20JC?
When enabled in the design file, the PD pin on the ATF1500AL-20JC asserts a hardware-controlled low-power mode: pulling PD high reduces ICC to <10 mA while latching all register states and output levels. Inputs (except PD) are blocked, and pin-keeper circuits remain active to prevent floating. The PD pin cannot serve as a logic input/output when power-down is enabled, though its macrocell resources (foldback, cascade) remain usable. Recovery time after PD low is 1 µs (tDLOV), per Power Down AC Characteristics. ATF1500AL-20JC enters this mode only when explicitly configured during JEDEC file generation.
Is the ATF1500AL-20JC pin-compatible with other ATF1500 variants?
Yes, the ATF1500AL-20JC shares identical 44-pin TQFP (44J) and PLCC (44A) footprints and pinouts with all ATF1500A and ATF1500AL speed grades (e.g., -7, -10, -12, -15, -20), as confirmed in the Ordering Information table and Package Type definitions. Signal names (CLK, GCLR, OE1/OE2, PD, VCC, GND, I/O) map identically across the family. This allows direct substitution for speed or power optimization - e.g., replacing ATF1500A-10JC with ATF1500AL-20JC maintains PCB layout while reducing standby current from 70 mA to 3 mA.
What programming tools support the ATF1500AL-20JC?
The ATF1500AL-20JC is supported by Atmel's official WinCUPL and third-party tools including Logical Devices' CUPL, Data I/O PS-2000, and older versions of Xilinx Foundation (via CPLD import). Design compilation produces JEDEC files compatible with standard parallel port programmers (e.g., BP Microsystems Series 4) and USB-based devices like the Xeltek SuperPro 5000. ATF1500AL-20JC requires no special voltage sequencing during programming - standard 5 V supply suffices, and security fuse programming is performed as the final step in the JEDEC flow.
ATF1500AL-20JC 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:
- 4.75V ~ 5.25V
- Number of Logic Elements/Blocks:
- -
- Number of Macrocells:
- 32
- Number of Gates:
- -
- Number of I/O:
- 32
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-PLCC (16.6x16.6)
ATF1500AL-20JC FAQ
1.How can I place an order for ATF1500AL-20JC through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1500AL-20JC 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-20JC reliable?
The price and inventory of ATF1500AL-20JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1500AL-20JC is usually 5 days.
3.What payment methods are accepted for ATF1500AL-20JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1500AL-20JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1500AL-20JC?
ATF1500AL-20JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1500AL-20JC 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-20JC?
For technical support, including ATF1500AL-20JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1500AL-20JC requirements.
6.How does Aetrix verify that ATF1500AL-20JC is sourced from the original manufacturer or authorized distributors?
All ATF1500AL-20JC 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-20JC meets industry standards.
7.What is the process for return or replacement of ATF1500AL-20JC?
All ATF1500AL-20JC units undergo pre-shipment inspection (PSI). If there is an issue with ATF1500AL-20JC, 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-20JC part is unused and in its original packaging.
Return procedure for ATF1500AL-20JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1500AL-20JC 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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