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Microchip Technology ATF1502ASV-15JI44
- Part No.:
- ATF1502ASV-15JI44
- Manufacturer:
- Microchip Technology
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
ATF1502ASV-15JI44.pdf
- Description:
- IC CPLD 32MC 15NS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,057
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Product details
Overview
ATF1502ASV-15JI44 from Microchip Technology (formerly Atmel) is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 32 macrocells, 5 product terms per macrocell (expandable to 40), 15 ns maximum pin-to-pin delay, and operation across -40°C to +85°C industrial temperature range. It integrates legacy TTL/SSI/MSI logic in compact 44-lead TQFP packaging and supports in-system programming via IEEE 1149.1 JTAG for field reconfiguration in embedded control systems.
For engineers reviewing the ATF1502ASV-15JI44 datasheet, ATF1502ASV-15JI44 pinout, ATF1502ASV-15JI44 application, or ATF1502ASV-15JI44 equivalent, key selection criteria include its 3.0–3.6 V supply compatibility, programmable slew rate and open-collector outputs, three global clock inputs, JTAG boundary-scan testability, and pin-controlled power-down mode enabling sub-1 mA standby current.
Technical Context
The ATF1502ASV-15JI44 implements a flexible macrocell architecture with five dedicated product terms per macrocell, configurable D/T-latch flip-flops, and combinatorial or registered output modes. Its enhanced routing includes global and regional buses, foldback logic, and cascade chains supporting up to 40-product-term sum terms per chain.
It features four dedicated input pins usable as global control signals (GCLR, OE1, OE2, GCLK1–3), two PD pins for hardware-triggered power-down, and JTAG pins (TDI/TMS/TCK/TDO) that remain functional for boundary-scan testing even when ISP is disabled. All macrocells support individual reduced-power bit activation and buried registered feedback independent of output configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 32 macrocells - provides gate count equivalent to ~1500 usable gates for medium-complexity glue logic integration |
| Timing Grade | -15 speed grade - guarantees ≤15 ns pin-to-pin propagation delay under industrial conditions (VCC = 3.0–3.6 V, TA = -40°C to +85°C) |
| Max Clock Frequency | 100 MHz - achievable with global clock inputs and registered operation, enabling high-speed state machine execution |
| Operating Voltage | 3.0–3.6 V - compatible with 3.3 V system rails; no level-shifting required for interfacing with modern microcontrollers and FPGAs |
| Temperature Range | -40°C to +85°C - qualified for industrial environments including motor control, PLC I/O modules, and telecom infrastructure |
| EEPROM Endurance | 10,000 program/erase cycles - supports repeated firmware updates and design iterations without device replacement |
| Data Retention | 20 years - ensures long-term reliability in unattended or maintenance-limited deployments such as remote sensors and energy meters |
Pinout & Package
ATF1502ASV-15JI44 is packaged in a 44-lead Thin Quad Flat Package (TQFP) with 0.8 mm lead pitch, RoHS-compliant, and thermally optimized for surface-mount assembly on industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 26, 32 | JTAG interface (TDI, TMS, TCK, TDO) | Enable IEEE 1149.1 boundary-scan testing and in-system programming without removing device from board |
| 5, 19 | Power-down control (PD1, PD2) | Hardware-triggered entry into <0.75 mA standby mode; latches internal state and preserves I/O levels |
| 39, 38, 37, 35 | Global control (GCLR, OE1, GCLK1, GCLK3) | Provide synchronous reset, output enable, and clock distribution across all macrocells with minimal skew |
| 4, 16, 24, 36 | GND | Dedicated ground connections reduce noise coupling and improve signal integrity for high-speed logic transitions |
| 9, 17, 29, 41 | VCCI | Four separate 3.3 V supply pins minimize IR drop and support stable operation under dynamic switching loads |
| 2–3, 6, 8–15, 18, 20–23, 25, 27–34, 36, 40, 42–44 | Bi-directional I/O | 32 user-programmable I/Os with individually configurable slew rate, open-collector option, and pin-keeper circuitry |
Key Features
| Feature | Design Value |
|---|---|
| In-System Programmability (ISP) | Enables field firmware updates via standard JTAG interface-no socket or programmer required during production or maintenance |
| Programmable Pin-keeper | Prevents floating inputs/I/Os by holding last-driven logic state, eliminating external pull-up resistors and associated DC power loss |
| Per-macrocell Power Control | Reduces dynamic power by disabling unused macrocell logic paths-critical for battery-powered or thermally constrained applications |
| Three Global Clock Inputs | Supports multi-clock domain designs (e.g., async FIFOs, clock domain crossing) without external clock muxing or routing congestion |
| Security Fuse | Protects proprietary logic configuration from reverse engineering; once programmed, fuse verify is inhibited while User Signature remains readable |
Applications
| Industrial Motor Control Interface | Legacy System Emulation |
|---|---|
Use Scenario: Replacing discrete 74-series logic in servo drive I/O expansion modules requiring real-time response and thermal resilience. IC Role / Device Role / Timing Role: Glue logic CPLD implementing encoder quadrature decoding, PWM gating, and fault signal arbitration with deterministic 15 ns timing. Use Value: Eliminates 12+ SMT components, reduces PCB area by 40%, and maintains full functionality across -40°C to +85°C ambient without derating. | Use Scenario: Modernizing retired PLC backplane controllers using obsolete PAL/GAL devices where footprint and pinout must match legacy boards. IC Role / Device Role / Timing Role: Drop-in CPLD replacement with identical 44-TQFP footprint, JTAG-programmable logic, and 3.3 V compatibility. Use Value: Restores production continuity without board redesign; leverages existing test fixtures and boundary-scan infrastructure. |
| Telecom Line Card Timing Manager | Medical Diagnostic Equipment Sequencer |
Use Scenario: Managing clock enable, reset sequencing, and status flag aggregation across multiple ASICs on a carrier-grade line card. IC Role / Device Role / Timing Role: Centralized timing control hub synchronizing FPGA configuration, ADC sampling clocks, and serial interface handshaking. Use Value: Achieves <1 ns inter-clock skew via dedicated GCLK inputs and eliminates metastability risk through programmable register hold times. | Use Scenario: Coordinating X-ray detector readout, image buffer handoff, and safety interlock monitoring in portable ultrasound units. IC Role / Device Role / Timing Role: Safety-critical sequencer enforcing strict timing windows between analog acquisition and digital processing stages. Use Value: Meets IEC 62304 Class B software requirements via hardware-enforced state transitions and power-up reset hysteresis (Large VRST option). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1502ASV-15AI44 | Same silicon, identical electrical specs, but packaged in 44-lead PLCC instead of TQFP; requires different PCB land pattern and reflow profile | Preferred for through-hole prototyping or legacy repair where PLCC sockets exist; unsuitable for high-density SMT production | Select only if mechanical compatibility with existing PLCC footprints is mandatory; no logic or timing trade-offs. |
| XCR3064XL-10VQ44C | Xilinx CoolRunner-II CPLD with 64 macrocells, 10 ns tPD, 2.7–3.6 V operation; higher density but different architecture (no foldback bus, different fitter toolchain) | Better suited for new designs requiring >32 macrocells or lower static current (<10 µA); not pin-compatible or functionally interchangeable | Choose for greenfield designs needing extended logic capacity or longer product lifecycle; requires full HDL re-synthesis and timing closure. |
Compared with ATF1502ASV-15AI44, the ATF1502ASV-15JI44 offers identical logic performance in a space-saving TQFP package ideal for automated SMT assembly, while the XCR3064XL-10VQ44C provides greater macrocell count and lower quiescent current at the cost of architectural divergence and toolchain migration.
Availability
ATF1502ASV-15JI44 is available at Aetrix Electronics and suitable for industrial motor control, telecom line card timing, medical diagnostic sequencing, and legacy system emulation requiring stable component supply and long-term obsolescence management.
Supply support for ATF1502ASV-15JI44 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 continues to support legacy Atmel PLD products with documentation, programming tools, and authorized distribution channels.
The ATF1502ASV family was designed for high-reliability, low-power, in-system programmable logic replacement in industrial and telecom applications where EEPROM-based nonvolatility, JTAG testability, and thermal robustness are essential.
FAQ
What is the maximum operating frequency of the ATF1502ASV-15JI44?
The ATF1502ASV-15JI44 supports a maximum internal global clock frequency of 100 MHz under industrial conditions (TA = -40°C to +85°C, VCC = 3.0–3.6 V). This is verified by AC parameter fCNT = 76.9 MHz minimum and fMAX = 100 MHz, with timing guaranteed by the -15 speed grade qualification. The ATF1502ASV-15JI44 achieves this using its three dedicated global clock inputs and low-skew routing architecture.
Does the ATF1502ASV-15JI44 support in-system programming (ISP)?
Yes, the ATF1502ASV-15JI44 fully supports in-system programming via the IEEE 1149.1 JTAG interface using pins TDI, TMS, TCK, and TDO. ISP allows programming and reprogramming without removing the device from the PCB, simplifying manufacturing and enabling field updates. The ATF1502ASV-15JI44 also includes JTAG boundary-scan testing capability compliant with IEEE Std. 1149.1a-1993.
What power management features does the ATF1502ASV-15JI44 offer?
The ATF1502ASV-15JI44 provides three hardware-level power management features: (1) pin-controlled power-down mode (PD1/PD2) reducing ICC to <0.75 mA, (2) per-macrocell reduced-power bit to disable unused logic paths, and (3) programmable output slew rate to minimize switching noise and EMI. These features are configured at design time and require no runtime software intervention.
Can the JTAG pins on the ATF1502ASV-15JI44 be used as general-purpose I/Os?
Yes - the JTAG pins (TDI, TMS, TCK, TDO) on the ATF1502ASV-15JI44 are configurable as general-purpose I/Os when JTAG boundary-scan testing and ISP are disabled in the design file. However, doing so forfeits in-circuit testability and field reprogrammability. The ATF1502ASV-15JI44 retains full macrocell functionality on those pins regardless of JTAG usage mode.
What is the purpose of the "pin-keeper" feature in the ATF1502ASV-15JI44?
The pin-keeper feature in the ATF1502ASV-15JI44 actively holds the last-driven logic state (high or low) on input and I/O pins when they float, preventing indeterminate voltage levels that cause shoot-through current and system noise. This eliminates the need for external pull-up/pull-down resistors and their associated DC power consumption - a critical advantage in low-power industrial and portable medical applications using the ATF1502ASV-15JI44.
ATF1502ASV-15JI44 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 10K program/erase cycles)
- Delay Time tpd(1) Max:
- 15 ns
- Voltage Supply - Internal:
- 3V ~ 3.6V
- 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)
ATF1502ASV-15JI44 FAQ
1.How can I place an order for ATF1502ASV-15JI44 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1502ASV-15JI44 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 ATF1502ASV-15JI44 reliable?
The price and inventory of ATF1502ASV-15JI44 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1502ASV-15JI44 is usually 5 days.
3.What payment methods are accepted for ATF1502ASV-15JI44?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1502ASV-15JI44 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1502ASV-15JI44?
ATF1502ASV-15JI44 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1502ASV-15JI44 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 ATF1502ASV-15JI44?
For technical support, including ATF1502ASV-15JI44 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1502ASV-15JI44 requirements.
6.How does Aetrix verify that ATF1502ASV-15JI44 is sourced from the original manufacturer or authorized distributors?
All ATF1502ASV-15JI44 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 ATF1502ASV-15JI44 meets industry standards.
7.What is the process for return or replacement of ATF1502ASV-15JI44?
All ATF1502ASV-15JI44 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1502ASV-15JI44, 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 ATF1502ASV-15JI44 part is unused and in its original packaging.
Return procedure for ATF1502ASV-15JI44:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1502ASV-15JI44 Tags
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5M40ZE64C5N
Intel
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ATF1502ASV-15AU44
Microchip Technology
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5M80ZE64C5N
Intel
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5M80ZT100C5N
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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ATF1504AS-10JU44
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5M160ZE64C5N
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