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Microchip Technology ATF1500A-7JC
- Part No.:
- ATF1500A-7JC
- Manufacturer:
- Microchip Technology
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
ATF1500A-7JC.pdf
- Description:
- IC CPLD 32MC 7.5NS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,579
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Product details
Overview
ATF1500A-7JC from Atmel is a 44-pin, 32-I/O electrically erasable complex programmable logic device (CPLD) with 7.5 ns maximum pin-to-pin delay, 125 MHz registered operation, and Flash-based reprogrammability. It integrates TTL/SSI/MSI logic in industrial control, communication interface glue logic, and legacy system upgrades requiring deterministic timing and non-volatile configuration.
For engineers reviewing the ATF1500A-7JC datasheet, ATF1500A-7JC pinout, ATF1500A-7JC application, or ATF1500A-7JC equivalent, key selection factors include its 5 V operation, PLCC-44 package, -40°C to +85°C industrial temperature range, pin-controlled power-down mode, and macrocell-level slew rate control for noise-sensitive designs.
Technical Context
The ATF1500A-7JC implements a fully connected global bus architecture feeding all 32 macrocells with 68-bit signal availability (32 I/Os + 4 dedicated inputs + 32 buried feedbacks), enabling flexible logic placement without pinout changes. Each macrocell supports D/T/latch flip-flops, individual output enable selection (OE1/OE2), and programmable product-term clocking.
It features cascaded logic chains (four chains, up to 40-product-term fan-in), regional buses for localized foldback terms, and pin-keeper circuits on all I/Os to prevent floating inputs and eliminate external pull-ups. The PD pin enables hardware-triggered power-down (<10 mA), latching internal states while blocking input transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 32 macrocells with 5 product terms each, supporting up to 36 global inputs |
| Max Pin-to-Pin Delay | 7.5 ns - guarantees sub-133 MHz combinational path timing in critical glue logic |
| Max Registered Speed | 125 MHz internal feedback - enables high-speed state machines with buried feedback |
| Supply Voltage | 5 V ± 10% - compatible with legacy 5 V TTL/CMOS systems without level translation |
| Operating Temp | -40°C to +85°C - qualified for industrial environments including factory automation and telecom infrastructure |
| Power-Down Current | <10 mA - reduces system standby power when triggered via PD pin high assertion |
| I/O Slew Control | Per-macrocell programmable - slow default prevents EMI on non-critical signals; fast option available per design file |
Pinout & Package
ATF1500A-7JC is housed in a 44-lead Plastic J-leaded Chip Carrier (PLCC) package, measuring 17.6 mm × 17.6 mm × 4.57 mm (max height), with 1.27 mm lead pitch and JEDEC MS-018 AC compliance.
| 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 reset | Asynchronously clears all registers on low; may be OR'd with product-term reset |
| OE1, OE2 | Active-low output enables | Selectively disable groups of I/O buffers; configurable per macrocell or globally |
| PD | Power-down control | Hardware-initiated low-power mode; disables inputs except PD, latches outputs and logic state |
| VCC / GND | Power and ground | Four VCC and three GND pins distributed for noise reduction and current sharing |
| I/O 1–32 | Bi-directional logic interface | Configurable as input, output, or bidirectional; each 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 |
| Pin-keeper circuitry | Programmable hold on unused I/Os - eliminates external pull resistors and associated DC leakage and board space |
| Macrocell flexibility | D/T/latch flip-flop selection + XOR-based polarity control - simplifies arithmetic, comparison, and De Morgan logic synthesis |
| Cascade logic chains | Four independent 40-product-term chains - accelerates wide sum-of-products (e.g., address decoders, priority encoders) |
| Security fuse | One-time programmable lock - prevents reverse engineering of JEDEC fuse map while preserving user signature access |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Bridge |
|---|---|
Use Scenario: Adding isolated digital I/O to a Modbus RTU master controller using discrete 5 V logic. IC Role / Device Role / Timing Role: Glue logic CPLD handling address decoding, strobe generation, and register mapping between microcontroller and peripheral ICs. Use Value: Eliminates multiple 74-series chips; leverages 7.5 ns delay and 125 MHz registers to meet tight cycle timing in 10 ms scan loops. | Use Scenario: Interfacing an ISA-bus PC-104 module with a modern FPGA-based motion controller. IC Role / Device Role / Timing Role: Protocol translator managing handshaking, wait-state insertion, and voltage-level alignment between 5 V ISA and 3.3 V logic domains. Use Value: Uses pin-keeper circuits to hold tri-stated ISA data lines during arbitration; PD pin enables low-power sleep during idle bus periods. |
| Telecom Line Card Control | Automated Test Equipment (ATE) Pattern Generator |
Use Scenario: Managing LED status indicators, relay drivers, and alarm inputs on a T1/E1 line interface card. IC Role / Device Role / Timing Role: State machine controller coordinating fault detection, reporting, and failover sequencing across multiple channels. Use Value: Power-up reset ensures known initial state; 125 MHz registered operation supports real-time alarm response within 8 µs latency budget. | Use Scenario: Generating synchronized stimulus waveforms for mixed-signal IC validation at 50 MHz test clocks. IC Role / Device Role / Timing Role: High-speed pattern sequencer driving parallel digital vectors with precise setup/hold margins. Use Value: Per-output slew control minimizes crosstalk on dense 32-bit bus; tSIS = 6 ns and tCOS = 4.5 ns guarantee timing closure at target frequency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1502AS-10JU | Pin-compatible 44-lead PLCC; 10 ns speed grade; RoHS-compliant green package; same 5 V supply | Higher density (48 macrocells); supports newer design tools; lacks ATF1500A's legacy software backward compatibility | Preferred for new designs requiring extended lifecycle support and Pb-free compliance |
| XCR3064XL-10VQ44C | 64-macrocell CoolRunner-II CPLD; 3.3 V core; 10 ns propagation; VQFP-44 package | Lower static power (10 µA typical); requires level-shifting for 5 V interfaces; no native 5 V I/O tolerance | Suitable where 3.3 V system integration and ultra-low standby current are prioritized over 5 V direct interfacing |
Compared with ATF1500A-7JC, ATF1502AS-10JU offers longer-term availability and green packaging but requires toolchain migration, while XCR3064XL-10VQ44C delivers lower power and higher density at the cost of voltage compatibility and pinout mismatch - making ATF1500A-7JC optimal for drop-in 5 V industrial replacements.
Availability
ATF1500A-7JC is available at Aetrix Electronics and suitable for industrial control systems, telecom infrastructure equipment, and legacy system refurbishment requiring stable component supply, long-lifecycle assurance, and 5 V logic compatibility.
Supply support for ATF1500A-7JC 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 non-volatile programmable logic and microcontrollers for industrial, automotive, and communications markets.
The ATF1500A series was engineered as a Flash-based CPLD family targeting 5 V system integration, offering pin compatibility with legacy PLDs and software backward compatibility with ATF1500/L tools.
FAQ
What is the operating temperature range for the ATF1500A-7JC?
The ATF1500A-7JC is rated for industrial temperature operation from -40°C to +85°C. This specification is confirmed in the Ordering Information table and DC Operating Conditions section of the official datasheet, where the "-J" suffix explicitly denotes the industrial grade. The device maintains full functionality-including 7.5 ns pin-to-pin delay and 125 MHz registered performance-across this entire range.
Does the ATF1500A-7JC support in-system programming?
Yes, the ATF1500A-7JC supports in-system programming via standard JTAG (IEEE 1149.1) interface. Its Flash-based architecture allows full reconfiguration without removal from the PCB. Programming requires a 12 V VPP signal applied to the VPP pin during erase/write cycles, as specified in the Absolute Maximum Ratings and Programming Voltage sections of the datasheet.
How does the pin-keeper feature work on the ATF1500A-7JC?
The ATF1500A-7JC includes programmable pin-keeper circuits on all I/O and input pins. When enabled in the design file, these circuits retain the last driven logic state (high or low) after the pin becomes high-impedance, preventing floating nodes. This eliminates the need for external pull-up/down resistors and reduces system noise and DC power consumption-critical in high-density industrial PCB layouts.
Can the PD pin on the ATF1500A-7JC be used as a general-purpose I/O?
No-the PD pin cannot function as a general-purpose I/O when power-down mode is enabled. As stated in the Power-down Mode section, enabling the PD feature dedicates that pin exclusively to power-down control; it loses its logic array input capability. However, the associated macrocell resources (e.g., buried feedback, foldback logic) remain usable even when PD is active.
What is the maximum clock frequency supported by the ATF1500A-7JC for registered operation?
The ATF1500A-7JC supports registered operation up to 125 MHz when using internal feedback paths, as verified in the Register AC Characteristics table under "Internal Feedback" for the -7 speed grade. This value derives from tSFS + tCFS = 2 ns + 2 ns = 4 ns → 1/4 ns = 250 MHz maximum theoretical, but datasheet specifies 125 MHz due to routing and setup margin constraints.
ATF1500A-7JC 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:
- 7.5 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)
ATF1500A-7JC FAQ
1.How can I place an order for ATF1500A-7JC through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1500A-7JC 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-7JC reliable?
The price and inventory of ATF1500A-7JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1500A-7JC is usually 5 days.
3.What payment methods are accepted for ATF1500A-7JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1500A-7JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1500A-7JC?
ATF1500A-7JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1500A-7JC 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-7JC?
For technical support, including ATF1500A-7JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1500A-7JC requirements.
6.How does Aetrix verify that ATF1500A-7JC is sourced from the original manufacturer or authorized distributors?
All ATF1500A-7JC 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-7JC meets industry standards.
7.What is the process for return or replacement of ATF1500A-7JC?
All ATF1500A-7JC units undergo pre-shipment inspection (PSI). If there is an issue with ATF1500A-7JC, 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-7JC part is unused and in its original packaging.
Return procedure for ATF1500A-7JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1500A-7JC 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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