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Microchip Technology ATF1502AS-10JI44
- Part No.:
- ATF1502AS-10JI44
- Manufacturer:
- Microchip Technology
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
ATF1502AS-10JI44.pdf
- Description:
- IC CPLD 32MC 10NS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,745
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Product details
Overview
ATF1502AS-10JI44 from Microchip Technology (formerly Atmel) is a high-performance, electrically-erasable Complex Programmable Logic Device (CPLD) with 32 macrocells, 5 product terms per macrocell (expandable to 40), and 44-pin TQFP packaging. It delivers 7.5 ns pin-to-pin delay and supports registered operation up to 125 MHz, enabling integration of TTL/SSI/MSI logic in industrial control and PCI-compliant interface applications.
For engineers reviewing the ATF1502AS-10JI44 datasheet, ATF1502AS-10JI44 pinout, ATF1502AS-10JI44 application, or ATF1502AS-10JI44 equivalent, key selection considerations include its JTAG-based in-system programmability (IEEE 1149.1), PCI-compliant 5V I/O drive capability, programmable slew rate, pin-keeper inputs, and dual power-down modes (1 mA active standby and <10 µA "L"-mode standby).
Technical Context
The ATF1502AS-10JI44 implements a flexible macrocell architecture with five sections per macrocell: product term array with 5 base terms (expandable via cascade), OR/XOR/CASCADE logic, D/T-latch-configurable flip-flop, output select/enable, and logic array inputs. Each macrocell supports buried registered feedback independent of output configuration.
It features three global clock pins (GCLK1–GCLK3), input transition detection (ITD) on global clocks and I/Os, fast registered input from product term, and a 40-signal global bus fed by all I/Os and macrocell feedback. The device uses EEPROM-based nonvolatile configuration with 10,000 program/erase cycles and 20-year data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 32 macrocells - provides gate count equivalent to ~1000 usable PLD gates for combinatorial and registered logic synthesis |
| Pin-to-pin Delay | 7.5 ns (–10 speed grade) - enables synchronous logic operation at up to 125 MHz system clock frequency |
| I/O Count | Up to 32 bi-directional I/O + 4 dedicated inputs - supports flexible signal routing and global control assignment (GCLR, OE1, OE2, GCLKx) |
| Power Management | 1 mA pin-controlled standby (PD1/PD2) and automatic 10 µA low-power mode ("L" variant behavior emulated in design flow) |
| JTAG Compliance | IEEE Std. 1149.1-1990/1149.1a-1993 - enables boundary-scan testing and in-system programming without device removal |
| PCI Compatibility | Meets PCI DC/AC electrical specs (VOH ≥2.4 V @ –2 mA, VOL ≤0.55 V @ 3–6 mA) - allows direct connection to 5V PCI bus without level-shifting |
| Configuration Memory | EEPROM-based, 100% tested, 2000V ESD protected - retains logic configuration across power cycles with no external boot ROM required |
Pinout & Package
ATF1502AS-10JI44 is packaged in a 44-lead Thin Quad Flat Package (TQFP), 10 mm × 10 mm, 0.8 mm pitch, lead-free and RoHS compliant. Pin 1 is marked by a dot or beveled corner; top view orientation follows standard JEDEC outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43 | I/O or dedicated input | Configurable as bidirectional I/O, registered/combinatorial input, or global control (GCLK1/GCLK2/GCLK3, GCLR, OE1, OE2); unused pins default to high-Z |
| 44 | TDI/I/O | JTAG Test Data Input - used for ISP programming and boundary-scan; may serve as general I/O if JTAG disabled in design |
| 3, 6, 41, 42 | TMS/I/O, TDO/I/O, TCK/I/O, TDI/I/O | JTAG Test Access Port - four dedicated pins supporting IEEE 1149.1 BST and ISP; pull-up option available on TMS/TDI |
| 23, 24, 35, 36, 40 | GND | Ground reference - two dedicated ground pins plus additional GND connections ensure stable noise margin and decoupling |
| 11, 26, 30, 39 | VCC | 5V supply - four VCC pins distributed across package corners to minimize IR drop and improve power integrity |
| 13, 27 | PD1/I/O, PD2/I/O | Power-down control - high-level assertion places device in <5 mA standby; disables internal logic transitions while latching outputs and registers |
Key Features
| Feature | Design Value |
|---|---|
| In-System Programmability (ISP) | Enables field firmware updates and design iteration without device removal using standard JTAG interface and SVF files |
| Programmable Slew Rate | Per-output control reduces EMI and crosstalk on high-speed buses; slow-slew default minimizes noise unless fast switching is explicitly enabled |
| Pin-keeper Circuits | Prevents floating inputs/I/Os during tri-state or un-driven states - eliminates need for external pull-ups and associated DC power loss |
| Security Fuse | One-time programmable fuse blocks unauthorized readback of configuration bitstream while preserving user-accessible 16-bit signature register |
| Power-up Reset with Hysteresis | Ensures deterministic state machine initialization; selectable large/small hysteresis options accommodate varying VCC ramp profiles |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Translation |
|---|---|
Use Scenario: Replacing discrete TTL logic in programmable logic controller backplanes to consolidate address decoding, interrupt arbitration, and status multiplexing. IC Role / Device Role / Timing Role: CPLD acting as configurable glue logic with registered timing paths synchronized to 25–50 MHz system clock. Use Value: Reduces board space and BOM count vs. multiple 74-series ICs; 7.5 ns propagation enables cycle-accurate response to real-time I/O events. |
Use Scenario: Bridging ISA or VMEbus peripherals to modern microcontroller buses with protocol-aware handshaking and address mapping. IC Role / Device Role / Timing Role: Configurable logic engine implementing wait-state generation, burst-mode enable, and address decode with setup/hold compliance. Use Value: Eliminates custom ASIC development; PCI-compliant I/O ensures robust 5V signaling into legacy bus loads without external drivers. |
| PCI Add-in Card Control Logic | Test Equipment Signal Conditioning |
Use Scenario: Managing IDSEL decoding, configuration space access, and interrupt routing in x86-compatible PCI add-in cards. IC Role / Device Role / Timing Role: PCI-compliant CPLD providing IDSEL pin selection, BAR decoding, and INTA#/INTB# arbitration logic. Use Value: Meets PCI electrical specs (VOH/VOL, skew, drive strength) directly - avoids external buffer stages and simplifies layout. |
Use Scenario: Implementing digital pattern generation, stimulus sequencing, and response capture logic in automated test equipment (ATE) front-ends. IC Role / Device Role / Timing Role: High-reliability logic sequencer with deterministic timing (tSU/tH = 3–6 ns), ITD-triggered event capture, and register-retained state across power cycles. Use Value: EEPROM-based nonvolatility ensures test vectors persist after power loss; 10,000-program-cycle endurance supports frequent firmware updates. |
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, 3.3V core, 100-pin VQFP; lower static current (10 µA) but requires level translation for 5V PCI bus | Not pin-compatible; lacks native 5V PCI I/O drive - needs external buffers for legacy bus interfacing | Select when migrating to 3.3V systems with higher logic density needs and no 5V bus constraints |
| EPM3032ATC44-10 | Intel MAX 3000A CPLD; 32 macrocells, 5V tolerant, 44-pin TQFP; 10 ns tPD, 116 MHz fMAX; no built-in ITD or pin-keeper | Functional overlap in basic logic replacement; lacks power-down control pins and programmable slew rate | Choose for cost-sensitive industrial designs where JTAG security and fine-grained power management are not required |
Compared with XCR3064XL-10VQ44C and EPM3032ATC44-10, the ATF1502AS-10JI44 uniquely combines native 5V PCI compliance, pin-keeper inputs, dual standby modes, and ITD-triggered event detection - making it optimal for retrofitting legacy 5V systems requiring field-upgradable, low-noise, and power-aware logic control.
Availability
ATF1502AS-10JI44 is available at Aetrix Electronics and suitable for industrial PLCs, PCI add-in cards, legacy bus interface adapters, and automated test equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for ATF1502AS-10JI44 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 its legacy PLD portfolio, including the ATF1502AS family. Microchip is a global leader in microcontrollers, analog, and FPGA/CPLD solutions with ISO 9001-certified manufacturing.
The ATF1502AS series was designed for high-reliability, in-system programmable logic replacement in industrial and communications infrastructure - emphasizing EEPROM nonvolatility, JTAG testability, and 5V PCI interoperability without external components.
FAQ
What is the maximum operating frequency of the ATF1502AS-10JI44?
The ATF1502AS-10JI44 supports registered operation up to 125 MHz under standard conditions (VCC = 5V, TA = 25°C). Its maximum internal global clock frequency is confirmed at 125 MHz for the –10 speed grade, with minimum clock period of 8 ns. This performance is achievable using global clock inputs (GCLK1–GCLK3) and accounts for setup/hold timing margins specified in the AC characteristics table.
Does the ATF1502AS-10JI44 support in-system programming (ISP)?
Yes, the ATF1502AS-10JI44 fully supports IEEE Std. 1149.1 JTAG-based in-system programming. It uses the four standard TDI, TDO, TMS, and TCK pins for configuration loading and boundary-scan testing. ISP allows reprogramming while soldered on the PCB, and the device ships pre-erased - ready for immediate use with compatible programmers or Microchip's official tools.
Is the ATF1502AS-10JI44 compatible with PCI bus specifications?
Yes, the ATF1502AS-10JI44 meets PCI 2.2 DC and AC electrical requirements, including VOH ≥2.4 V at –2 mA, VOL ≤0.55 V at 3–6 mA, and output slew rates of 1–5 V/ns. Its 5V-tolerant I/O structure and programmable drive strength allow direct connection to PCI slots without external buffers - verified in the official PCI DC/AC Characteristics tables.
What power-saving features does the ATF1502AS-10JI44 offer?
The ATF1502AS-10JI44 offers three distinct power-saving mechanisms: (1) automatic 10 µA standby mode triggered by inactivity, (2) pin-controlled 1 mA power-down via PD1/PD2, and (3) per-macrocell reduced-power bit that lowers ICC3 by adding tRPA delay. These features are design-selectable and documented in the Power-down Mode and Speed/Power Management sections.
Can unused I/O pins on the ATF1502AS-10JI44 be left unconnected?
Unused I/O pins on the ATF1502AS-10JI44 should not be left floating - they must be configured with the programmable pin-keeper option enabled. This feature holds the last driven logic state (high or low), preventing intermediate voltage levels that cause shoot-through current and EMI. External pull-up/down resistors are unnecessary when pin-keeper is activated in the design file.
ATF1502AS-10JI44 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:
- 10 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)
ATF1502AS-10JI44 FAQ
1.How can I place an order for ATF1502AS-10JI44 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1502AS-10JI44 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 ATF1502AS-10JI44 reliable?
The price and inventory of ATF1502AS-10JI44 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1502AS-10JI44 is usually 5 days.
3.What payment methods are accepted for ATF1502AS-10JI44?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1502AS-10JI44 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1502AS-10JI44?
ATF1502AS-10JI44 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1502AS-10JI44 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 ATF1502AS-10JI44?
For technical support, including ATF1502AS-10JI44 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1502AS-10JI44 requirements.
6.How does Aetrix verify that ATF1502AS-10JI44 is sourced from the original manufacturer or authorized distributors?
All ATF1502AS-10JI44 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 ATF1502AS-10JI44 meets industry standards.
7.What is the process for return or replacement of ATF1502AS-10JI44?
All ATF1502AS-10JI44 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1502AS-10JI44, 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 ATF1502AS-10JI44 part is unused and in its original packaging.
Return procedure for ATF1502AS-10JI44:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1502AS-10JI44 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
-
5M80ZT100I5N
Intel
-
LC4032V-75TN48C
Lattice Semiconductor Corporation
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ATF1504ASV-15AU44
Microchip Technology
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ATF1504AS-10JU44
Microchip Technology
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5M160ZE64C5N
Intel
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