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Microchip Technology ATF1508ASL-25AI100
- Part No.:
- ATF1508ASL-25AI100
- Manufacturer:
- Microchip Technology
- Package:
- 100-TQFP
- Datasheet:
-
ATF1508ASL-25AI100.pdf
- Description:
- IC CPLD 128MC 25NS 100TQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ATF1508ASL-25AI100 from Microchip Technology (formerly Atmel) is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 128 macrocells, 7.5 ns pin-to-pin delay, and support for 125 MHz registered operation. It features three global clock inputs, JTAG IEEE 1149.1 boundary-scan, and in-system programmability via TDI/TDO/TCK/TMS pins. Used in legacy industrial control logic consolidation and PCI-compliant interface bridging.
For engineers reviewing the ATF1508ASL-25AI100 datasheet, ATF1508ASL-25AI100 pinout, ATF1508ASL-25AI100 application, or ATF1508ASL-25AI100 equivalent, key selection criteria include its 100-lead TQFP package, 5 V VCCINT / 3.3–5.0 V VCCIO dual-supply architecture, automatic 10 µA standby power mode, and PCI-compliant I/O drive capability.
Technical Context
The ATF1508ASL-25AI100 implements a flexible macrocell architecture with five product terms per macrocell (expandable to 40 via cascade), programmable D/T/latch flip-flops, and individual output enable/product term control. Its global bus delivers up to 40 signals per logic block, while foldback logic enables regional sum-term generation across 16 macrocells.
It supports three global clock pins (GCLK1–GCLK3), input transition detection (ITD) on clocks/inputs/I/Os, and programmable pin-keeper circuits to prevent floating inputs. Power management includes edge-controlled "L"-mode standby (10 µA), pin-controlled power-down (<10 mA), and per-macrocell reduced-power bit configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 128 macrocells - provides gate count equivalent to ~2000 usable PLD gates for logic consolidation tasks |
| Propagation Delay | 7.5 ns max pin-to-pin - enables synchronous design at ≤125 MHz registered frequency |
| Supply Voltages | VCCINT = 5.0 V (fixed); VCCIO = 3.3 V or 5.0 V - allows mixed-voltage board interfacing without level shifters |
| Standby Current | 10 µA (automatic "L" mode) - eliminates need for external power gating in battery-backed systems |
| I/O Count | 96 bi-directional I/O + 4 dedicated inputs - supports wide parallel bus interfaces (e.g., PCI, ISA, custom control buses) |
| JTAG Compliance | IEEE 1149.1-1990/1149.1a-1993 - enables production boundary-scan test and field firmware updates without device removal |
| PCI Compatibility | Meets PCI DC/AC drive specs (VOH ≥2.4 V @ –2 mA; VOL ≤0.55 V @ 3–6 mA) - directly connects to 5 V PCI slots without buffer ICs |
Pinout & Package
ATF1508ASL-25AI100 is packaged in a 100-lead Thin Quad Flat Package (TQFP) with 0.5 mm pitch, RoHS-compliant, green (Pb/Halide-free) construction. Thermal pad exposed on underside for enhanced heat dissipation in industrial environments.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1–25, 26–50, 51–75, 76–100 | Bi-directional I/O or dedicated input | Configurable as input, output, or bidirectional; each supports programmable slew rate, open-collector option, and pin-keeper |
| GCLK1, GCLK2, GCLK3 | Global clock input | Dedicated low-skew clock routing to all macrocells; supports ITD for glitch detection |
| GCLR | Global clear input | Asynchronous reset for all flip-flops; may be OR'd with product-term signal for conditional reset |
| OE1, OE2 | Output enable inputs | Control output drivers globally; polarity selectable per macrocell via fitter software |
| PD1, PD2 | Power-down control | Active-high pins enabling <10 mA standby; disable internal logic but retain register/output states |
| TCK, TMS, TDI, TDO | JTAG boundary-scan interface | 4-pin IEEE 1149.1 port for programming, debug, and production test; pull-up optional on TMS/TDI |
| VCCINT | Core logic supply | Must be connected to 5.0 V ±5%; powers input buffers and macrocell logic; tolerant of 3.3 V or 5.0 V inputs |
| VCCIO | I/O driver supply | Configurable for 3.3 V (2.7–3.6 V) or 5.0 V (4.75–5.25 V); sets output voltage swing and drive strength |
| GND | Ground reference | Multiple ground pins distributed across package corners and sides to minimize noise coupling and IR drop |
Key Features
| Feature | Design Value |
|---|---|
| Programmable macrocell flip-flop mode | Supports D, T, JK, SR, latch, and buried-register-in-combinatorial-output configurations - enables single-macrocell state machines and efficient arithmetic logic |
| Enhanced routing resources | 40-signal global bus + 16-signal foldback bus per region - increases successful place-and-route yield for pin-locked revisions |
| PCI-compliant I/O | Guaranteed VOH ≥2.4 V @ –2 mA and VOL ≤0.55 V @ 6 mA under 5 V operation - eliminates external bus transceivers in PCI add-in cards |
| Security fuse & User Signature | One-time-programmable security fuse blocks readback; two-byte (16-bit) user-accessible signature space stores revision/date/project ID regardless of fuse state |
| Power-up reset with hysteresis options | Configurable small/large VRST hysteresis ensures reliable state machine initialization; large hysteresis reduces ICC by several hundred µA |
| Fast In-System Programming (ISP) | Full JTAG ISP using SVF files - enables firmware updates in deployed equipment without rework or socketing |
Applications
| Industrial PLC Backplane Interface | Legacy ISA Bus Controller |
|---|---|
Use Scenario: Replacing discrete TTL logic and PALs in programmable logic controller backplanes handling sensor input aggregation and actuator command distribution. IC Role / Device Role / Timing Role: CPLD implementing address decoding, interrupt arbitration, and data multiplexing between CPU bus and modular I/O cards. Use Value: Reduces component count by >70% versus discrete logic; 7.5 ns delay ensures timing closure on 8–10 MHz ISA-derived backplane clocks. |
Use Scenario: Serving as the glue logic for x86-based industrial PCs requiring ISA slot expansion with custom peripherals (e.g., motion control, analog I/O). IC Role / Device Role / Timing Role: Address decoder, I/O enable generator, and bus transceiver control for 16-bit ISA data/address lines. Use Value: 96 I/Os support full 16-bit data + 24-bit address + control signals; PCI-compliant drive strength meets ISA bus loading requirements. |
| PCI Add-in Card Logic | Automated Test Equipment (ATE) Pattern Generator |
Use Scenario: Implementing protocol translation and handshake logic in PCI-based measurement instruments (e.g., digitizers, function generators). IC Role / Device Role / Timing Role: Bridge between PCI bus controller and custom FPGA/DAC/ADC subsystems; manages burst transfers and status reporting. Use Value: Direct PCI I/O compliance eliminates level-shifting components; JTAG boundary-scan enables in-circuit test of interconnect integrity. |
Use Scenario: Generating precise stimulus patterns and capturing response signatures in semiconductor ATE platforms. IC Role / Device Role / Timing Role: High-speed pattern sequencer with deterministic timing, synchronized to system clock and trigger events. Use Value: 125 MHz registered operation supports 8 ns minimum pattern step resolution; programmable slew rate minimizes EMI during high-frequency vector switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1508AS-25AI100 | Same logic architecture and pinout, but lacks automatic 10 µA standby ("L" version); typical ICC1 = 160–180 mA | Suitable where power budget allows higher static current; no change to PCB or firmware | Select when lowest quiescent power is not required and cost sensitivity favors standard grade |
| XC95144XL-10TQ100I | Xilinx CoolRunner-II architecture; 144 macrocells; 5 V tolerant I/O; 10 ns tPD; 100% pin-compatible TQFP-100 footprint | Better suited for new designs requiring longer lifecycle support; requires Xilinx toolchain and different JEDEC file format | Choose for long-term availability and lower power (10 µA standby) if redesign effort is acceptable |
Compared with ATF1508AS-25AI100, the ATF1508ASL-25AI100 delivers 16× lower standby current without sacrificing speed or I/O count; versus XC95144XL-10TQ100I, it retains legacy Atmel toolchain compatibility and identical JEDEC fuse mapping but has shorter projected obsolescence horizon.
Availability
ATF1508ASL-25AI100 is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, legacy ISA bus controllers, and PCI add-in card logic requiring stable component supply across extended product lifecycles.
Supply support for ATF1508ASL-25AI100 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 legacy Atmel PLD products including the ATF1508AS family. The company specializes in microcontrollers, analog, and programmable logic solutions for industrial, automotive, and aerospace markets.
The ATF1508AS(L) series was designed for logic consolidation in cost-sensitive, high-reliability industrial systems requiring in-field reprogrammability, PCI compliance, and long-term supply stability - especially where migration from TTL/PALs to CPLDs was needed without architectural overhaul.
FAQ
What is the difference between ATF1508ASL-25AI100 and ATF1508AS-25AI100?
The ATF1508ASL-25AI100 includes an automatic 10 µA standby power mode activated when no logic transitions occur, whereas the ATF1508AS-25AI100 defaults to standard standby current (~160–180 mA). Both share identical logic density, pinout, timing (7.5 ns), and feature set. The "L" suffix denotes the low-power variant optimized for energy-constrained industrial applications.
Does ATF1508ASL-25AI100 support 3.3 V only I/O operation?
Yes, ATF1508ASL-25AI100 supports 3.3 V I/O operation when VCCIO is supplied at 2.7–3.6 V, while maintaining 5.0 V on VCCINT. Input buffers remain compatible with both 3.3 V and 5.0 V logic levels. This dual-voltage capability allows seamless integration into mixed-signal systems without external level translators.
Can ATF1508ASL-25AI100 be programmed in-system after soldering to a PCB?
Yes, ATF1508ASL-25AI100 supports full JTAG-based In-System Programming (ISP) via its TDI/TDO/TCK/TMS pins. No socket or UV eraser is required. Programming can be performed using Microchip's official tools or third-party SVF-compatible programmers, enabling field firmware updates and design iterations without board rework.
Is ATF1508ASL-25AI100 compliant with PCI electrical specifications?
Yes, ATF1508ASL-25AI100 meets PCI Local Bus Specification Rev. 2.2 DC and AC requirements, including VOH ≥2.4 V at –2 mA and VOL ≤0.55 V at 6 mA under 5 V operation. Its output drivers are sized to meet PCI sink/source current demands, allowing direct connection to PCI slots without additional bus interface ICs.
What package type does ATF1508ASL-25AI100 use, and is it RoHS-compliant?
ATF1508ASL-25AI100 uses a 100-lead Thin Quad Flat Package (TQFP) with 0.5 mm lead pitch. It is RoHS-compliant, green (Pb/Halide-free), and rated for industrial temperature range (–40°C to +85°C). The package includes exposed thermal pad for improved thermal performance in enclosed industrial enclosures.
ATF1508ASL-25AI100 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 100-TQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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-25AI100 FAQ
1.How can I place an order for ATF1508ASL-25AI100 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1508ASL-25AI100 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-25AI100 reliable?
The price and inventory of ATF1508ASL-25AI100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1508ASL-25AI100 is usually 5 days.
3.What payment methods are accepted for ATF1508ASL-25AI100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1508ASL-25AI100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1508ASL-25AI100?
ATF1508ASL-25AI100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1508ASL-25AI100 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-25AI100?
For technical support, including ATF1508ASL-25AI100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1508ASL-25AI100 requirements.
6.How does Aetrix verify that ATF1508ASL-25AI100 is sourced from the original manufacturer or authorized distributors?
All ATF1508ASL-25AI100 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-25AI100 meets industry standards.
7.What is the process for return or replacement of ATF1508ASL-25AI100?
All ATF1508ASL-25AI100 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1508ASL-25AI100, 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-25AI100 part is unused and in its original packaging.
Return procedure for ATF1508ASL-25AI100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1508ASL-25AI100 Tags
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5M40ZE64C5N
Intel
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ATF1502ASV-15AU44
Microchip Technology
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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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