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Microchip Technology ATF1504AS-7JX44
- Part No.:
- ATF1504AS-7JX44
- Manufacturer:
- Microchip Technology
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
ATF1504AS-7JX44.pdf
- Description:
- IC CPLD 64MC 7.5NS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:232
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Product details
Overview
ATF1504AS-7JX44 from Microchip (formerly Atmel) is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 64 macrocells, 5 product terms per macrocell expandable to 40, and 7.5 ns pin-to-pin delay. It supports registered operation up to 125 MHz, features three global clock inputs, and operates across industrial temperature range (–40°C to +85°C) in 44-lead TQFP package. It is used in legacy industrial control logic consolidation and FPGA migration support.
For engineers reviewing the ATF1504AS-7JX44 datasheet, ATF1504AS-7JX44 pinout, ATF1504AS-7JX44 application, or ATF1504AS-7JX44 equivalent, key selection criteria include JTAG ISP capability, 3.3V/5.0V I/O flexibility, programmable slew rate, pin-keeper circuitry for floating-input immunity, and PCI-compliant timing behavior under industrial thermal conditions.
Technical Context
The ATF1504AS-7JX44 implements a four-block architecture with shared global bus feeding up to 40 signals per logic block and regional foldback buses enabling 16-term cascade logic per region. Its macrocell integrates configurable D/T/latch flip-flops, XOR-based arithmetic logic, and programmable output enable sourced from dedicated OE pins or product terms.
It supports IEEE 1149.1a boundary-scan testing and In-System Programming via TDI/TDO/TMS/TCK pins, with optional pull-ups on TMS and TDI. Power management includes automatic μA standby (L-version), pin-controlled 1 mA power-down mode, and per-macrocell reduced-power bit adding 10–15 ns tRPA delay when enabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 64 macrocells with 5 base + up to 35 expandable product terms per macrocell - enables complex combinatorial and registered logic within single device |
| Timing Performance | 7.5 ns max pin-to-pin delay (–7 speed grade); 125 MHz max registered operation - meets real-time control and interface timing budgets |
| Global Resources | Three global clock inputs (GCLK1–GCLK3), global clear (GCLR), two global output enables (OE1/OE2) - supports multi-clock domain synchronization |
| I/O Voltage Support | 3.3 V or 5.0 V I/O pins (VCCIO selectable) - interoperates with mixed-voltage legacy systems without level shifters |
| Power Management | 10 μA standby current (industrial temp); 1 mA pin-controlled power-down mode - extends uptime in battery-backed or low-quiescent systems |
| Security & Reliability | Programmable security fuse; 10,000 program/erase cycles; 20-year data retention; 2000 V ESD protection - ensures long-term field deployment integrity |
| Standards Compliance | IEEE Std. 1149.1-1990/1149.1a-1993 boundary-scan; PCI-compliant signaling - enables production testability and system-level compliance |
Pinout & Package
ATF1504AS-7JX44 is packaged in a 44-lead Thin Quad Flat Package (TQFP) with 0.8 mm lead pitch, RoHS-compliant, green (Pb/Halide-free) finish. Pin 1 is marked by corner notch; package dimensions are 10 mm × 10 mm × 1.4 mm.
| 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 | Bi-directional logic pins supporting configurable input/output, global control, or buried feedback; all support pin-keeper option to prevent floating |
| 44 | I/O/TDI | JTAG Test Data Input - primary entry point for ISP programming and boundary-scan test data |
| 33 | I/O/TDO | JTAG Test Data Output - serial output for scan chain readback during BST or programming verification |
| 32 | TMS/I/O | JTAG Test Mode Select - controls TAP controller state machine; configurable as general-purpose I/O if JTAG disabled |
| 31 | I/O/TCK | JTAG Test Clock - synchronous clock for JTAG operations; must be driven externally during ISP/BST |
| 27, 28 | PD1/I/O, PD2/I/O | Power-down control inputs - assert high to enter 1 mA power-down mode; macrocell resources remain usable for foldback logic |
| 11, 12, 13 | GCLK1/I, GCLK2/OE2/I, GCLK3/I/O | Global clock inputs - drive all macrocell clocks; GCLK2 doubles as global output enable; GCLK3 supports bidirectional use |
| 10 | GCLR/I | Global clear input - asynchronous reset for all registers; may be combined with product term for selective reset |
| 9 | OE1/I | Global output enable 1 - controls output drivers across multiple macrocells; configurable per-macrocell via product term |
| 4, 23, 37 | GND | Ground reference - three dedicated ground pins reduce noise coupling and improve signal integrity |
| 26, 36 | VCC | Core power supply - supplies internal logic array (VCCINT = 5.0 V ±10% for industrial grade) |
Key Features
| Feature | Design Value |
|---|---|
| In-System Programmability (ISP) | Full JTAG-based reprogramming without device removal - enables field firmware updates and design iteration on deployed hardware |
| Flexible Macrocell Configuration | D/T/latch flip-flop selection per macrocell with XOR-based arithmetic and buried registered feedback - supports state machines, counters, and glue logic in minimal footprint |
| Programmable Slew Rate | Per-output slow/fast switching control - reduces EMI and crosstalk on sensitive traces without external RC networks |
| Pin-keeper Circuits | 100 kΩ programmable keeper on all inputs and I/Os - eliminates need for external pull-ups and prevents floating-induced shoot-through current |
| Power-up Reset with Hysteresis | Configurable small/large hysteresis option - ensures deterministic register initialization during VCC ramp, critical for state machine reliability |
| Security Fuse & User Signature | One-time programmable security fuse blocks fuse pattern readback; 16-bit user-accessible signature space - supports version tracking and IP protection |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Translation |
|---|---|
Use Scenario: Adding isolated digital I/O channels to programmable logic controllers using existing 5 V backplane infrastructure. IC Role / Device Role / Timing Role: Glue logic CPLD implementing address decoding, strobe generation, and level-shifting between microcontroller and opto-isolated I/O banks. Use Value: Replaces 8–12 discrete TTL/SSI chips; maintains 7.5 ns timing margin for 10 MHz bus cycles while supporting industrial –40°C to +85°C operation. |
Use Scenario: Bridging ISA or VMEbus peripherals to modern microcontrollers lacking native legacy bus support. IC Role / Device Role / Timing Role: Protocol translator mapping asynchronous bus handshaking (IOR#, IOW#, MEMR#, MEMW#) to synchronous APB/AHB transactions. Use Value: Enables drop-in replacement of obsolete PAL/GAL devices; leverages 125 MHz registered performance to meet tight setup/hold windows on 8 MHz ISA cycles. |
| PCI-Compliant Peripheral Control | Field-Upgradeable Instrumentation Logic |
Use Scenario: Implementing configuration logic and interrupt arbitration for add-in cards in PCI-based test equipment chassis. IC Role / Device Role / Timing Role: PCI target interface managing command decode, parity checking, and INTA#/INTB# routing per slot specification. Use Value: Meets PCI 2.2 electrical and timing requirements including tSU/tH on AD[31:0] and C/BE#[3:0]; validated with IEEE 1149.1 boundary-scan for production test coverage. |
Use Scenario: Providing reconfigurable signal conditioning and calibration logic in portable medical analyzers requiring post-deployment feature updates. IC Role / Device Role / Timing Role: Runtime-reprogrammable logic block handling sensor multiplexing, gain switching, and fault detection sequencing. Use Value: JTAG ISP allows firmware-triggered CPLD reconfiguration without opening enclosure; pin-keeper circuits maintain safe I/O states during update transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCR3064XL-7VQ44C | 64 macrocells, 5 V tolerant I/O, 7.5 ns propagation, but uses Flash-based non-volatile technology vs. EEPROM; no automatic μA standby | Higher static current (100 μA typical) limits use in always-on battery systems; lacks pin-keeper option | Preferred where higher density per pin or Flash reprogrammability is prioritized over ultra-low standby power |
| LC4064ZC-7TN48I | 64 macrocells, 1.8 V core / 3.3 V I/O, 7.5 ns, but requires external configuration PROM; no integrated JTAG ISP | Requires additional SPI PROM and boot sequence; not suitable for true in-field reprogramming without host MCU support | Chosen when lowest active power (2.5 mW typical) and small-footprint 48-pin TQFP are mandatory, and ISP is handled externally |
Compared with XCR3064XL-7VQ44C and LC4064ZC-7TN48I, the ATF1504AS-7JX44 uniquely combines EEPROM non-volatility, integrated JTAG ISP, sub-10 μA industrial-grade standby, and pin-keeper circuits - making it optimal for maintenance-sensitive, low-power, field-upgradable industrial control designs where board space and BOM count are constrained.
Availability
ATF1504AS-7JX44 is available at Aetrix Electronics and suitable for industrial PLC upgrades, legacy bus interface translation, and PCI-compliant peripheral control requiring stable component supply and long-term lifecycle support.
Supply support for ATF1504AS-7JX44 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 including the ATF1504AS family with full documentation, programming tools, and obsolescence mitigation.
The ATF1504AS series was designed as a high-reliability, EEPROM-based CPLD for industrial and automotive-adjacent logic consolidation - emphasizing in-system programmability, wide temperature operation, and robust power management over raw speed or density.
FAQ
What is the operating voltage range for ATF1504AS-7JX44 I/O pins?
The ATF1504AS-7JX44 supports dual I/O voltage operation: VCCIO can be set to either 3.0–3.6 V or 4.5–5.5 V (industrial grade), allowing direct interfacing with both 3.3 V and 5.0 V logic families without external level shifters. Core logic (VCCINT) is fixed at 5.0 V ±10%. This flexibility is confirmed in Table 11-2 of the official datasheet.
Does ATF1504AS-7JX44 support boundary-scan testing?
Yes, ATF1504AS-7JX44 fully supports IEEE Std. 1149.1-1990 and 1149.1a-1993 boundary-scan testing via its dedicated TDI, TDO, TMS, and TCK pins. Each I/O and input pin includes a Boundary-Scan Cell (BSC), and the device ships with a compliant BSDL file. JTAG functionality is programmable - it may be disabled to reclaim pins as general-purpose I/O if BST/ISP is unused.
How does the power-down mode work on ATF1504AS-7JX44?
ATF1504AS-7JX44 implements pin-controlled power-down: asserting PD1 or PD2 high reduces supply current to <10 mA while latching all internal logic and output states. During power-down, inputs (except PD pins) are ignored, but pin-keeper circuits remain active to prevent floating. The feature is enabled in the design source file; PD pins cannot serve as logic inputs but retain macrocell resources for foldback logic.
Can ATF1504AS-7JX44 be programmed in-circuit after soldering?
Yes, ATF1504AS-7JX44 is In-System Programmable (ISP) via its 4-pin JTAG interface (TDI, TDO, TMS, TCK). No socket or programming adapter is required - programming occurs directly on the PCB using standard SVF files and compatible JTAG programmers. The device ships erased and ready for first-time programming, and ISP supports unlimited reprogramming cycles (10,000 minimum).
What packaging and lead finish does ATF1504AS-7JX44 use?
ATF1504AS-7JX44 is supplied in a 44-lead Thin Quad Flat Package (TQFP) with 10 mm × 10 mm body and 0.8 mm lead pitch. It features a green, Pb/Halide-free, RoHS-compliant finish per JEDEC J-STD-609. The package is rated for industrial temperature operation (–40°C to +85°C) and includes three GND pins and two VCC pins for improved noise immunity.
ATF1504AS-7JX44 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Verified
- Programmable Type:
- In System Programmable (min 10K 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:
- 64
- 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)
ATF1504AS-7JX44 FAQ
1.How can I place an order for ATF1504AS-7JX44 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1504AS-7JX44 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 ATF1504AS-7JX44 reliable?
The price and inventory of ATF1504AS-7JX44 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1504AS-7JX44 is usually 5 days.
3.What payment methods are accepted for ATF1504AS-7JX44?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1504AS-7JX44 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1504AS-7JX44?
ATF1504AS-7JX44 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1504AS-7JX44 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 ATF1504AS-7JX44?
For technical support, including ATF1504AS-7JX44 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1504AS-7JX44 requirements.
6.How does Aetrix verify that ATF1504AS-7JX44 is sourced from the original manufacturer or authorized distributors?
All ATF1504AS-7JX44 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 ATF1504AS-7JX44 meets industry standards.
7.What is the process for return or replacement of ATF1504AS-7JX44?
All ATF1504AS-7JX44 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1504AS-7JX44, 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 ATF1504AS-7JX44 part is unused and in its original packaging.
Return procedure for ATF1504AS-7JX44:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1504AS-7JX44 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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