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Microchip Technology ATF1504AS-10AU44
- Part No.:
- ATF1504AS-10AU44
- Manufacturer:
- Microchip Technology
- Package:
- 44-TQFP
- Datasheet:
-
ATF1504AS-10AU44.pdf
- Description:
- IC CPLD 64MC 10NS 44TQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ATF1504AS-10AU44 from Microchip Technology (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, operates at 3.3V or 5.0V I/O, and features JTAG-based in-system programmability (ISP) for field reconfiguration without board removal - used in legacy PCI interface logic, industrial control state machines, and embedded glue logic consolidation.
For engineers reviewing the ATF1504AS-10AU44 datasheet, ATF1504AS-10AU44 pinout, ATF1504AS-10AU44 application, or ATF1504AS-10AU44 equivalent, key selection criteria include its 44-pin TQFP package, -10 speed grade (125 MHz max clock), dual-voltage I/O compatibility, JTAG boundary-scan compliance (IEEE 1149.1), and programmable power-down via PD1/PD2 pins.
Technical Context
The ATF1504AS-10AU44 implements a flexible macrocell architecture with five configurable sections per macrocell: product term generation, OR/XOR/cascade logic, D/T/latch flip-flop, output select/enable, and logic array inputs. Its global bus carries all 68 possible inputs (including 64 buried macrocell feedbacks) and feeds a 40-signal switch matrix per logic block.
It integrates three global clock pins (GCLK1–GCLK3), input transition detection (ITD) on clocks/I/Os, fast registered input from product terms, and programmable pin-keeper circuits. Power management includes automatic µA standby (L-version), pin-controlled 1 mA power-down mode, and per-macrocell reduced-power bit - all configurable in the design file.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 64 macrocells - enables replacement of multiple TTL/SSI/MSI devices or classic PLDs in glue logic applications |
| Speed Grade | -10 = 125 MHz max internal clock frequency - supports high-speed control timing in industrial automation |
| Pin-to-pin Delay | 7.5 ns maximum - ensures tight timing closure for synchronous logic interfacing with microcontrollers or FPGAs |
| I/O Voltage Support | 3.3V or 5.0V - allows direct interfacing with mixed-voltage systems without level shifters |
| Package | 44-lead TQFP (AU44) - surface-mount footprint compatible with standard PCB assembly processes |
| JTAG Compliance | IEEE Std. 1149.1-1990 & 1149.1a-1993 - enables boundary-scan testing and ISP programming via standard debug interfaces |
| Power-down Current | <10 mA in PD mode - reduces system standby power in battery-backed or energy-sensitive applications |
Pinout & Package
ATF1504AS-10AU44 is housed in a 44-lead Thin Quad Flat Package (TQFP) with 0.8 mm lead pitch and exposed thermal pad. Pin numbering follows standard counter-clockwise top-view orientation starting from pin 1 (top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 44, 22, 33 | GND | Four dedicated ground connections - essential for noise suppression and stable logic reference in high-speed CPLD operation |
| 11, 24, 36, 41 | VCC | Four VCC supply pins - distribute power across package to minimize IR drop and support full 64-macrocell utilization |
| 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 25, 26, 27, 28, 29, 30, 31, 32, 34, 35, 37, 38, 39, 40, 42, 43 | I/O | 35 bidirectional I/O pins - configurable as inputs, outputs, or open-drain; support slew rate control and pin-keeper option |
| 2 | I/O/TDI | JTAG Test Data In - primary serial input for ISP programming and boundary-scan instruction/data loading |
| 32 | I/O/TDO | JTAG Test Data Out - serial output for readback and verification during JTAG operations |
| 31 | I/O/TMS | JTAG Test Mode Select - controls TAP controller state transitions during boundary-scan or ISP |
| 26 | I/O/TCK | JTAG Test Clock - synchronizes all JTAG operations; requires clean, low-jitter clock source |
| 19, 37 | PD1/I/O, PD2/I/O | Power-down control inputs - drive high to enter sub-10 mA standby; disable logic I/O functionality when active |
| 27, 40 | GCLK1/I, GCLK3/I/O | Global clock inputs - feed synchronous logic across all macrocells; support ITD for glitch-free edge detection |
| 29 | GCLR/I | Global clear input - asynchronous reset for all macrocell flip-flops; configurable per-macrocell as product-term OR'd with GCLEAR |
| 30 | OE1/I | Output enable input - controls group output drivers; selectable per macrocell via product term or dedicated pin |
| 28 | GCLK2/OE2/I | Dual-function pin - serves as second global clock or second output enable signal depending on configuration |
Key Features
| Feature | Design Value |
|---|---|
| Programmable pin-keeper circuits | Prevents floating inputs/I/Os without external pull-ups - eliminates DC leakage and system noise in unconnected states |
| Per-macrocell reduced-power bit | Reduces dynamic power consumption individually per macrocell - critical for optimizing total ICC in partial-utilization designs |
| Three global clock inputs with ITD | Enables robust clock domain crossing and glitch-immune edge detection on critical control signals |
| Combinatorial output with registered feedback | Allows buried register feedback within combinatorial macrocells - increases logic density without sacrificing timing performance |
| Security fuse + 16-bit User Signature | Protects design IP while allowing traceability via user-programmable revision/date/project fields accessible even when fuse is set |
| VCC power-up reset with hysteresis options | Ensures deterministic state machine initialization; Large hysteresis reduces ICC by several hundred µA |
Applications
| PCI Bus Interface Logic | Industrial PLC I/O Expansion |
|---|---|
Use Scenario: Implementing address decoding, bus arbitration, and protocol handshaking between microcontroller and PCI peripheral cards in legacy industrial PCs. IC Role / Device Role / Timing Role: Glue logic CPLD providing high-current, low-skew outputs compliant with PCI electrical specs while managing timing-critical setup/hold windows. Use Value: Replaces discrete TTL and PAL devices with single-chip solution supporting 3.3V/5V mixed signaling and JTAG in-field updates. |
Use Scenario: Adding custom digital I/O expansion to programmable logic controllers handling sensor inputs and actuator outputs in factory automation. IC Role / Device Role / Timing Role: Configurable logic engine performing real-time signal conditioning, debounce, and safety interlock sequencing with deterministic <7.5 ns propagation. Use Value: Enables rapid hardware iteration via ISP without board respin; pin-keeper circuits eliminate need for external pull resistors on unused I/Os. |
| Legacy System Emulation | Embedded Bootloader Sequencing |
Use Scenario: Emulating obsolete PAL/GAL devices in aging medical or aerospace equipment where original parts are no longer available. IC Role / Device Role / Timing Role: Pin-compatible functional replacement with identical macrocell count, product term structure, and timing behavior under -10 speed grade. Use Value: Extends product lifecycle using field-programmable architecture; security fuse prevents reverse engineering of legacy logic functions. |
Use Scenario: Managing power-on reset sequencing, memory mapping, and secure boot enable signals in resource-constrained microcontroller-based systems. IC Role / Device Role / Timing Role: State-machine controller coordinating voltage rail ramp-up, clock stabilization, and flash initialization before CPU release. Use Value: Leverages VCC power-up reset with hysteresis and programmable register initialization to guarantee deterministic boot state across temperature ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1504AS-10AI44 | Same architecture and pinout, but rated for -40°C to +85°C industrial temperature range vs. commercial 0°C–70°C | Required for outdoor, automotive under-hood, or factory-floor deployments where ambient extremes exceed commercial spec | Select ATF1504AS-10AI44 when operating outside 0–70°C; otherwise ATF1504AS-10AU44 suffices for office/lab environments |
| EPM3064ATC44-10N | Intel MAX 3000A CPLD with 64 macrocells, same 44-TQFP package, but uses different architecture (EEPROM vs. Flash), no pin-keeper, and lacks ITD circuits | Compatible for basic logic replacement but lacks advanced power management and input transition detection needed for noise-prone industrial settings | Choose EPM3064ATC44-10N only if existing toolchain targets Intel MAX devices; ATF1504AS-10AU44 offers superior low-power and diagnostic features |
Compared with ATF1504AS-10AI44, the ATF1504AS-10AU44 trades extended temperature tolerance for lower cost and qualification overhead in benign environments; versus EPM3064ATC44-10N, it delivers finer-grained power control, built-in input monitoring, and seamless JTAG-based firmware updates without requiring external configuration memory.
Availability
ATF1504AS-10AU44 is available at Aetrix Electronics and suitable for industrial control systems, legacy PCI interface upgrades, and embedded bootloader sequencing requiring stable component supply and long-term obsolescence management.
Supply support for ATF1504AS-10AU44 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 maintains full support for the ATF1504AS family, including datasheets, programming tools, and application notes - delivering reliable, long-lifecycle programmable logic solutions.
The ATF1504AS series was designed for high-reliability, in-system reconfigurable logic in industrial, communications, and legacy system modernization - emphasizing EEPROM nonvolatility, JTAG accessibility, and low-power flexibility over raw gate count.
FAQ
What is the maximum operating frequency of the ATF1504AS-10AU44?
The ATF1504AS-10AU44 supports a maximum internal global clock frequency of 125 MHz, as confirmed by its -10 speed grade designation and AC characteristics table. This applies to registered logic paths using GCLK inputs; combinatorial paths achieve 7.5 ns pin-to-pin delay. The ATF1504AS-10AU44 achieves this performance while maintaining full EEPROM-based nonvolatility and JTAG in-system programmability.
Does the ATF1504AS-10AU44 support both 3.3V and 5.0V I/O operation?
Yes, the ATF1504AS-10AU44 supports dual-voltage I/O operation: VCCIO can be configured for either 3.0–3.6V or 4.75–5.25V, enabling direct interfacing with mixed-voltage systems. Its I/O buffers are designed to meet TTL and CMOS voltage thresholds under both conditions, and slew rate control is available per output to manage signal integrity in either regime - a key capability of the ATF1504AS-10AU44.
How does the power-down feature work on the ATF1504AS-10AU44?
The ATF1504AS-10AU44 implements pin-controlled power-down: asserting PD1 or PD2 high reduces supply current to below 10 mA while latching all internal logic states and outputs. Inputs (except PD pins) are blocked, and pin-keeper circuits maintain last-driven levels. This mode is enabled in the design file - not hardware-strapped - and the ATF1504AS-10AU44 retains full JTAG accessibility during power-down for diagnostics.
Can the JTAG pins of the ATF1504AS-10AU44 be used as general-purpose I/O?
Yes, the JTAG pins (TDI, TDO, TMS, TCK) of the ATF1504AS-10AU44 can be repurposed as general I/O when JTAG boundary-scan and ISP are disabled in the programming configuration. This recovers four additional logic resources - a documented capability in the ATF1504AS-10AU44 datasheet that increases usable I/O count in non-debug configurations.
What packaging and lead finish does the ATF1504AS-10AU44 use?
The ATF1504AS-10AU44 is supplied in a 44-lead TQFP (Thin Quad Flat Package) with lead finish of matte tin (Sn), RoHS-compliant and compatible with standard Pb-free reflow profiles. The "U" in AU44 denotes the TQFP package variant, distinct from PLCC (P) or PQFP (Q) options - a mechanical specification confirmed in Atmel's official ordering information for the ATF1504AS-10AU44.
ATF1504AS-10AU44 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 44-TQFP
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- 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:
- 64
- 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)
ATF1504AS-10AU44 FAQ
1.How can I place an order for ATF1504AS-10AU44 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1504AS-10AU44 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-10AU44 reliable?
The price and inventory of ATF1504AS-10AU44 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1504AS-10AU44 is usually 5 days.
3.What payment methods are accepted for ATF1504AS-10AU44?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1504AS-10AU44 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1504AS-10AU44?
ATF1504AS-10AU44 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1504AS-10AU44 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-10AU44?
For technical support, including ATF1504AS-10AU44 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1504AS-10AU44 requirements.
6.How does Aetrix verify that ATF1504AS-10AU44 is sourced from the original manufacturer or authorized distributors?
All ATF1504AS-10AU44 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-10AU44 meets industry standards.
7.What is the process for return or replacement of ATF1504AS-10AU44?
All ATF1504AS-10AU44 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1504AS-10AU44, 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-10AU44 part is unused and in its original packaging.
Return procedure for ATF1504AS-10AU44:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1504AS-10AU44 Tags
-
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
Microchip Technology
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5M160ZE64C5N
Intel
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