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Microchip Technology ATF1502ASV-15AI44
- Part No.:
- ATF1502ASV-15AI44
- Manufacturer:
- Microchip Technology
- Package:
- 44-TQFP
- Datasheet:
-
ATF1502ASV-15AI44.pdf
- Description:
- IC CPLD 32MC 15NS 44TQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ATF1502ASV-15AI44 from Atmel is a high-density, electrically erasable Complex Programmable Logic Device (CPLD) with 32 macrocells, 5–40 expandable product terms per macrocell, 15 ns pin-to-pin delay, and operation up to 77 MHz in registered mode. It supports in-system programming via IEEE 1149.1 JTAG and delivers PCI-compliant logic integration for legacy TTL/SSI/MSI replacement in industrial control and embedded interface applications.
For engineers reviewing the ATF1502ASV-15AI44 datasheet, ATF1502ASV-15AI44 pinout, ATF1502ASV-15AI44 application, or ATF1502ASV-15AI44 equivalent, key selection criteria include its 44-pin TQFP/PLCC packaging, -40°C to +85°C industrial temperature rating, 3.0–3.6 V supply range, JTAG boundary-scan compliance, and programmable power-down mode with PD1/PD2 pins.
Technical Context
The ATF1502ASV-15AI44 implements a flexible macrocell architecture with five dedicated product terms per macrocell-expandable to 40 via cascade logic-and supports combinatorial or registered outputs with buried feedback routing. Its global bus feeds all 32 macrocells and I/Os, while regional foldback buses enable high-fan-in sum-term generation across four logic chains.
It features three global clock inputs (GCLK1–3), individual macrocell register control (clock, reset, preset), programmable output slew rate and open-collector mode, and pin-keeper circuits to eliminate floating inputs. JTAG boundary-scan testing (IEEE 1149.1a) and ISP are fully integrated, with security fuse protection and 16-bit user signature storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 32 macrocells with 5 base + up to 35 cascade product terms per macrocell |
| Timing Performance | 15 ns max pin-to-pin delay; 77 MHz registered operation; 100 MHz fMAX |
| Supply Voltage | 3.0 V to 3.6 V - compatible with 3.3 V systems; no 5 V tolerance |
| Operating Temperature | -40°C to +85°C - qualified for industrial environments |
| Package | 44-lead TQFP (A suffix) or PLCC (J suffix) - both pin-compatible for ATF1502ASV-15AI44 |
| Power Management | 0.75 mA standby current; per-macrocell reduced-power bit; pin-controlled power-down (PD1/PD2) |
| JTAG Compliance | Fully supports IEEE Std. 1149.1-1990 and 1149.1a-1993 boundary-scan and ISP |
Pinout & Package
ATF1502ASV-15AI44 is available in two 44-pin packages: 44-lead TQFP (44A) and 44-lead PLCC (44J), both supporting identical pin functions and signal mapping. Pin assignments are electrically and functionally identical between packages; only mechanical footprint differs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GCLK1, GCLK2, GCLK3 | Global Clock Inputs | Three dedicated high-drive clock inputs; each can serve as macrocell clock source or OE control |
| GCLR | Global Clear Input | Asynchronous reset for all macrocell registers; configurable per-macrocell with product-term OR option |
| OE1, OE2 | Global Output Enable | Two dedicated output-enable pins; selectable per macrocell as true/complement or via I/O subset |
| PD1, PD2 | Power-down Control | Active-high pins enabling sub-5 mA standby; disable internal logic while preserving output states and pin-keeper latches |
| TDI, TMS, TCK, TDO | JTAG Test Access Port | IEEE 1149.1-compliant boundary-scan and ISP interface; pull-up optional on TMS/TDI |
| VCCI (×4) | Core Power Supply | Four 3.3 V supply pins distributed for low-noise core operation and decoupling |
| GND (×4) | Ground Reference | Four dedicated ground pins for signal integrity and thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| In-System Programmability (ISP) | Full JTAG-based reprogramming without device removal; supports SVF files and third-party tools |
| Programmable Pin-keeper | Eliminates need for external pull-ups on unused inputs/I/Os; prevents floating-induced noise and DC leakage |
| Per-macrocell Power Control | Reduced-power bit disables unused logic paths, cutting ICC by up to 40% in standby mode |
| Buried Registered Feedback | Enables dual-latch behavior within single macrocell - critical for state machine optimization and timing closure |
| Security Fuse & User Signature | One-time programmable fuse blocks readback; 16-bit user-accessible signature retains project ID/revision regardless of fuse state |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Adapter |
|---|---|
Use Scenario: Replacing discrete TTL logic in programmable logic controller backplanes requiring field-upgradable glue logic. IC Role / Device Role / Timing Role: CPLD implementing address decoding, strobe generation, and handshake protocol translation between microcontroller and I/O modules. Use Value: 15 ns propagation delay ensures deterministic timing at 10–20 MHz bus speeds; industrial temp rating guarantees reliability in uncontrolled cabinet environments. |
Use Scenario: Bridging ISA or VMEbus peripherals to modern microcontrollers in test equipment and instrumentation. IC Role / Device Role / Timing Role: Configurable logic block translating legacy bus timing (e.g., /IOR, /IOW, /MEMR) into synchronous APB/AHB handshakes. Use Value: 32 macrocells support full 16-bit address decode + control logic; JTAG ISP enables firmware-driven hardware updates without board rework. |
| PCI-Compliant Peripheral Controller | Embedded System Power Sequencer |
Use Scenario: Implementing PCI target interface logic for custom add-in cards in industrial PCs. IC Role / Device Role / Timing Role: Glue logic handling PCI configuration space access, parity generation, and DEVSEL# timing compliance. Use Value: PCI-compliant electrical specs and 100 MHz fMAX meet PCI Rev 2.1 timing requirements; 44-pin TQFP fits standard PCIe slot spacing constraints. |
Use Scenario: Managing multi-rail power-up sequencing and fault monitoring in FPGA-based embedded systems. IC Role / Device Role / Timing Role: State machine coordinating 3.3 V, 2.5 V, and 1.2 V rail enable signals with reset assertion and watchdog timeout handling. Use Value: Power-up reset with large-hysteresis option ensures robust initialization at 3.0 V minimum; PD1/PD2 pins allow dynamic sleep-mode entry during idle cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCR3064XL-10VQ44C | 64 macrocells, 3.3 V, 10 ns tPD; Flash-based, non-volatile; no JTAG ISP (requires external programmer) | Higher density and faster speed, but lacks in-field reprogrammability and boundary-scan test capability | Choose when maximum logic capacity and lowest propagation delay are prioritized over field update flexibility |
| LC4032V-75T44C | 32 macrocells, 3.3 V, 7.5 ns tPD; Flash-based; JTAG ISP supported; no dedicated power-down pins or pin-keeper option | Superior speed and lower static current, but lacks industrial temp grade and advanced power management features | Choose for commercial-temp designs needing higher clock frequency and lower ICC1, where PD1/PD2 and keeper circuits are unnecessary |
Compared with XCR3064XL-10VQ44C and LC4032V-75T44C, the ATF1502ASV-15AI44 uniquely combines industrial temperature qualification, pin-controlled power-down, programmable pin-keepers, and full IEEE 1149.1a boundary-scan - making it optimal for field-deployed, maintenance-sensitive embedded systems requiring long-term reliability and in-service reconfiguration.
Availability
ATF1502ASV-15AI44 is available at Aetrix Electronics and suitable for industrial PLCs, legacy bus adapters, PCI peripheral controllers, and embedded power sequencers requiring stable component supply across extended lifecycle programs.
Supply support for ATF1502ASV-15AI44 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 (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and programmable logic devices for industrial, automotive, and communications markets.
The ATF1502ASV family was designed as a high-reliability, EEPROM-based CPLD platform targeting legacy logic replacement and system-level glue logic in harsh-environment applications - emphasizing in-system programmability, industrial temperature operation, and JTAG testability.
FAQ
What is the operating voltage range for the ATF1502ASV-15AI44?
The ATF1502ASV-15AI44 operates from 3.0 V to 3.6 V. It is not 5 V tolerant, and all I/Os are referenced to this single VCCI supply. Operation below 3.0 V may cause functional failure or incomplete power-up reset activation, especially when using the Large hysteresis option. The ATF1502ASV-15AI44 must be powered exclusively from a regulated 3.3 V source meeting ripple and transient specifications outlined in the datasheet.
Does the ATF1502ASV-15AI44 support in-system programming (ISP)?
Yes, the ATF1502ASV-15AI44 supports full IEEE 1149.1-compliant in-system programming via its dedicated TDI, TMS, TCK, and TDO pins. ISP allows reprogramming without removing the device from the PCB, enabling field updates and rapid design iteration. When ISP is disabled in the design file, those four pins become available as general-purpose I/Os - but JTAG boundary-scan testing is then unavailable.
What is the purpose of the PD1 and PD2 pins on the ATF1502ASV-15AI44?
The PD1 and PD2 pins on the ATF1502ASV-15AI44 provide pin-controlled power-down functionality. When either pin is driven high (and the feature is enabled in the design file), the device enters a low-current state (<5 mA) while retaining all register and output states. During power-down, input signals are blocked except for the active PD pin, and pin-keeper circuits maintain I/O levels to prevent floating. The ATF1502ASV-15AI44 remains fully recoverable upon PD pin deassertion.
Can the ATF1502ASV-15AI44 be used in commercial-grade designs?
Yes - the ATF1502ASV-15AI44 is rated for -40°C to +85°C (industrial grade), so it is fully suitable for commercial applications (0°C to +70°C). Atmel explicitly states minimal risk in using "I"-grade parts in commercial environments, as VCC specifications and AC timing are identical across grades. No derating is required for voltage or speed; only ambient temperature margin differs.
How does the programmable pin-keeper feature work on the ATF1502ASV-15AI44?
The programmable pin-keeper on the ATF1502ASV-15AI44 maintains the last driven logic state (high or low) on any configured input or I/O pin after it becomes floating - eliminating need for external pull-up/down resistors. This reduces board space, BOM cost, and DC power consumption. The feature is enabled per-pin in the design file and operates independently of device power state, remaining active even in power-down mode.
ATF1502ASV-15AI44 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 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-TQFP (10x10)
ATF1502ASV-15AI44 FAQ
1.How can I place an order for ATF1502ASV-15AI44 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1502ASV-15AI44 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-15AI44 reliable?
The price and inventory of ATF1502ASV-15AI44 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1502ASV-15AI44 is usually 5 days.
3.What payment methods are accepted for ATF1502ASV-15AI44?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1502ASV-15AI44 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1502ASV-15AI44?
ATF1502ASV-15AI44 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1502ASV-15AI44 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-15AI44?
For technical support, including ATF1502ASV-15AI44 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1502ASV-15AI44 requirements.
6.How does Aetrix verify that ATF1502ASV-15AI44 is sourced from the original manufacturer or authorized distributors?
All ATF1502ASV-15AI44 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-15AI44 meets industry standards.
7.What is the process for return or replacement of ATF1502ASV-15AI44?
All ATF1502ASV-15AI44 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1502ASV-15AI44, 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-15AI44 part is unused and in its original packaging.
Return procedure for ATF1502ASV-15AI44:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1502ASV-15AI44 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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