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Microchip Technology ATF1508ASL-25AU100
- Part No.:
- ATF1508ASL-25AU100
- Manufacturer:
- Microchip Technology
- Package:
- 100-TQFP
- Datasheet:
-
ATF1508ASL-25AU100.pdf
- Description:
- IC CPLD 128MC 25NS 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:125
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Product details
Overview
ATF1508ASL-25AU100 from Microchip (formerly Atmel) is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 128 macrocells, 5 product terms per macrocell (expandable to 40), and 7.5 ns pin-to-pin delay. It operates up to 125 MHz in registered mode, supports 3.3 V or 5.0 V I/O, and features JTAG ISP and IEEE 1149.1 boundary-scan for in-system programming and test in industrial control logic consolidation.
For engineers reviewing the ATF1508ASL-25AU100 datasheet, ATF1508ASL-25AU100 pinout, ATF1508ASL-25AU100 application, or ATF1508ASL-25AU100 equivalent, key selection criteria include its 100-lead TQFP package, automatic 10 µA standby power, PCI-compliant I/O drive strength, programmable slew rate, and dual power domains (VCCINT = 5 V, VCCIO = 3.3/5.0 V).
Technical Context
The ATF1508ASL-25AU100 implements a hierarchical routing architecture with global and regional buses: all 128 macrocell outputs and all I/O pins feed a shared global bus, while each macrocell generates a foldback term routed to a 16-macrocell regional bus. Its switch matrix selects up to 40 signals from the global bus per logic block.
Each macrocell supports configurable D/T/latch flip-flops with rising-edge clocking, asynchronous reset/preset (from GCLEAR or product terms), and buried registered feedback within combinatorial outputs. Three global clock pins (GCLK1–GCLK3), input transition detection (ITD) on clocks/I/Os, and programmable pin-keeper circuits provide deterministic timing and noise immunity in mixed-signal environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 128 macrocells - enables replacement of multiple TTL/SSI/MSI devices in glue logic consolidation. |
| Pin-to-pin Delay | 7.5 ns - guarantees sub-133 MHz operation for critical path timing in synchronous control systems. |
| Max Registered Frequency | 125 MHz - supports high-speed state machines and data-path control in industrial PLCs and instrumentation. |
| Power Modes | 10 µA standby ("L" version), 1 mA pin-controlled power-down - reduces idle power in battery-backed or energy-sensitive applications. |
| I/O Voltage Support | 3.3 V or 5.0 V on VCCIO - allows direct interfacing with legacy 5 V logic and modern 3.3 V microcontrollers without level shifters. |
| JTAG Compliance | IEEE Std. 1149.1-1990/1149.1a-1993 - enables standardized boundary-scan testing and in-system programming via 4-pin interface. |
| PCI Compliance | Meets PCI DC/AC drive requirements (e.g., VOH ≥ 2.4 V @ –2 mA, VOL ≤ 0.55 V @ 3–6 mA) - suitable for add-in card logic in PC-compatible systems. |
Pinout & Package
ATF1508ASL-25AU100 is packaged in a 100-lead Thin Quad Flat Package (TQFP), 14 mm × 14 mm, 0.5 mm pitch, RoHS-compliant and green (Pb/Halide-free). The package supports surface-mount reflow assembly and provides 96 bi-directional I/O pins plus four dedicated input pins (GCLR, OE1, OE2/GCLK2, GCLK1), with GCLK3 available on an I/O pin.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1–100 (see top-view diagram) | Bi-directional I/O / Dedicated Input / Power / Ground | Includes 96 I/Os (configurable as input/output/bidirectional), 4 dedicated inputs (GCLR, OE1, OE2/GCLK2, GCLK1), 3 global clocks (GCLK1–GCLK3), JTAG pins (TCK/TMS/TDI/TDO), PD1/PD2 power-down controls, VCCIO (I/O supply), VCCINT (core supply), and GND. |
| TCK, TMS, TDI, TDO | JTAG Test Access Port | Enable IEEE 1149.1 boundary-scan testing and in-system programming; TMS/TDI have optional internal pull-ups. |
| GCLK1, GCLK2, GCLK3 | Global Clock Inputs | Three independent clock sources with Input Transition Detection (ITD); GCLK2 doubles as OE2 output enable. |
| PD1, PD2 | Power-down Control Inputs | Assert high to enter <10 mA power-down mode; latches internal state and holds outputs; disables logic use of these pins. |
| VCCINT, VCCIO | Separate Power Domains | VCCINT = 5 V only (core logic); VCCIO = 3.3 V or 5.0 V (I/O drivers) - enables mixed-voltage system interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Pin-keeper | Maintains last-driven logic state on floating inputs/I/Os - eliminates external pull-ups and prevents noise-induced switching in unconnected pins. |
| Reduced-power Macrocell Bit | Per-macrocell power gating - lowers dynamic current by disabling unused logic paths without affecting functionality. |
| Buried Registered Feedback | Enables combinatorial output with internal register feedback - supports dual-latch behavior per macrocell for compact state machine implementation. |
| Flexible Flip-flop Configuration | D/T/JK/SR/latch modes with product-term clock enable and asynchronous reset/preset - simplifies synthesis of complex sequential logic. |
| PCI-compliant I/O Drivers | Guaranteed VOH ≥ 2.4 V @ –2 mA and VOL ≤ 0.55 V @ 3–6 mA - meets PCI Local Bus specification for add-in board logic. |
Applications
| Industrial PLC Logic Controller | PCI Add-in Card Glue Logic |
|---|---|
Use Scenario: Replacing discrete TTL logic in programmable logic controller backplanes handling sensor input conditioning and relay output sequencing. IC Role / Device Role / Timing Role: CPLD implementing synchronous state machines with 125 MHz register clocking and deterministic 7.5 ns combinational propagation. Use Value: Reduces board area and BOM count vs. multiple 74-series ICs; supports field-upgradable logic via JTAG ISP without hardware change. |
Use Scenario: Providing address decoding, interrupt arbitration, and configuration register mapping on x86-compatible PCI expansion cards. IC Role / Device Role / Timing Role: PCI-compliant logic interface managing IDSEL, FRAME#, IRDY#, TRDY# with guaranteed 2.4 V output drive at –2 mA. Use Value: Eliminates need for external bus transceivers; leverages built-in ITD and slew-rate control to meet PCI signal integrity requirements. |
| Legacy System Emulation | Test Equipment Pattern Generator |
Use Scenario: Emulating obsolete PAL/GAL devices in aging medical or aerospace equipment where original parts are unavailable. IC Role / Device Role / Timing Role: Pin-compatible logic replacement using same PCB footprint and 100-lead TQFP; reprogrammable via JTAG without removal. Use Value: Extends service life of end-of-life systems; security fuse prevents reverse engineering of legacy logic designs. |
Use Scenario: Generating synchronized stimulus waveforms and capturing response data in automated test equipment (ATE) digital pattern generators. IC Role / Device Role / Timing Role: High-speed sequencer with three independent global clocks and programmable output slew rate for jitter reduction. Use Value: Enables precise edge placement (±1 ns typical) and low-noise transitions via per-pin slew control - critical for high-fidelity signal generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCR3128XL-10VQ100C | 128 macrocells, 10 ns tPD, 3.3 V only, no VCCINT/VCCIO separation, lower ICC standby (~25 µA) | Lacks 5 V tolerance and PCI drive compliance; requires external level shifting for 5 V systems | Prefer when full 3.3 V system integration and lowest static power are priorities over mixed-voltage support. |
| EPM3128ATC100-10 | 128 macrocells, 10 ns tPD, 3.3 V core/I/O, no JTAG boundary-scan, non-ISP (requires UV erasure or parallel programming) | No in-system programmability or IEEE 1149.1 test capability; higher programming infrastructure cost | Consider only for cost-sensitive, high-volume production where field updates and testability are not required. |
Compared with XCR3128XL-10VQ100C and EPM3128ATC100-10, the ATF1508ASL-25AU100 uniquely supports dual-voltage I/O (3.3/5.0 V), PCI-compliant drive strength, and full JTAG boundary-scan - making it the only option among the three qualified for mixed-voltage industrial backplanes and PCI add-in cards requiring field-programmability and test access.
Availability
ATF1508ASL-25AU100 is available at Aetrix Electronics and suitable for industrial PLC logic consolidation, PCI add-in card design, and legacy system emulation requiring stable component supply across extended product lifecycles.
Supply support for ATF1508ASL-25AU100 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 the ATF1508AS family as part of its legacy CPLD portfolio, emphasizing reliability, long-term availability, and industrial temperature qualification.
The ATF1508AS series was designed for high-reliability glue logic replacement in industrial automation, telecommunications infrastructure, and military/aerospace systems where reprogrammability, mixed-voltage I/O, and JTAG testability are essential.
FAQ
What is the operating temperature range for the ATF1508ASL-25AU100?
The ATF1508ASL-25AU100 is rated for industrial temperature operation from –40°C to +85°C. This is confirmed in the Absolute Maximum Ratings table and DC Operating Conditions section of the official datasheet (Rev. 0784P–PLD–7/05), where "L" suffix denotes the low-power industrial-grade variant. The "L" version also guarantees 10 µA standby current across this full range.
Does the ATF1508ASL-25AU100 support both 3.3 V and 5.0 V I/O simultaneously?
Yes - the ATF1508ASL-25AU100 uses separate power domains: VCCINT must be 5.0 V (core logic), while VCCIO can be independently set to either 3.3 V or 5.0 V. This allows the device to interface directly with both 3.3 V microcontrollers and 5 V legacy peripherals without external level shifters, as explicitly stated in the "3.3V or 5.0V I/O Operation" section of the datasheet.
How does the power-down mode work on the ATF1508ASL-25AU100?
The ATF1508ASL-25AU100 supports pin-controlled power-down via PD1 or PD2 inputs. When enabled in the design file and asserted high, supply current drops below 10 mA; all internal logic states and registered outputs are latched and held. Inputs (except PDx) are blocked, but pin-keeper circuits remain active to prevent floating. AC timing parameters during power-down entry/exit are specified in the "Power-down AC Characteristics" table.
Is the ATF1508ASL-25AU100 compatible with PCI bus specifications?
Yes - the ATF1508ASL-25AU100 is explicitly certified PCI-compliant. Its I/O drivers meet PCI DC requirements (VOH ≥ 2.4 V @ –2 mA, VOL ≤ 0.55 V @ 3–6 mA) and AC drive strength curves (e.g., IOH(AC) ≥ –44 mA at VOUT ≤ 1.4 V), as verified in the "PCI DC/AC Characteristics" tables and "PCI Compliance" section of the datasheet.
Can the ATF1508ASL-25AU100 be programmed in-system after soldering to the PCB?
Yes - the ATF1508ASL-25AU100 is fully in-system programmable (ISP) via its 4-pin JTAG interface (TCK/TMS/TDI/TDO), compliant with IEEE Std. 1149.1. Programming occurs at 5 V TTL levels without device removal. The JTAG port can be disabled in final configuration to reclaim those pins as general-purpose I/O, as documented in the "Programming" and "JTAG-BST Overview" sections.
ATF1508ASL-25AU100 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 100-TQFP
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Programmable Type:
- In System Programmable (min 10K program/erase cycles)
- Delay Time tpd(1) Max:
- 25 ns
- Voltage Supply - Internal:
- 4.5V ~ 5.5V
- Number of Logic Elements/Blocks:
- -
- Number of Macrocells:
- 128
- Number of Gates:
- -
- Number of I/O:
- 80
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
ATF1508ASL-25AU100 FAQ
1.How can I place an order for ATF1508ASL-25AU100 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1508ASL-25AU100 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 ATF1508ASL-25AU100 reliable?
The price and inventory of ATF1508ASL-25AU100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1508ASL-25AU100 is usually 5 days.
3.What payment methods are accepted for ATF1508ASL-25AU100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1508ASL-25AU100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1508ASL-25AU100?
ATF1508ASL-25AU100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1508ASL-25AU100 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 ATF1508ASL-25AU100?
For technical support, including ATF1508ASL-25AU100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1508ASL-25AU100 requirements.
6.How does Aetrix verify that ATF1508ASL-25AU100 is sourced from the original manufacturer or authorized distributors?
All ATF1508ASL-25AU100 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 ATF1508ASL-25AU100 meets industry standards.
7.What is the process for return or replacement of ATF1508ASL-25AU100?
All ATF1508ASL-25AU100 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1508ASL-25AU100, 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 ATF1508ASL-25AU100 part is unused and in its original packaging.
Return procedure for ATF1508ASL-25AU100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1508ASL-25AU100 Tags
-
5M40ZE64C5N
Intel
-
ATF1502ASV-15AU44
Microchip Technology
-
5M80ZE64C5N
Intel
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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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