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Microchip Technology ATF1508AS-10AI100
- Part No.:
- ATF1508AS-10AI100
- Manufacturer:
- Microchip Technology
- Package:
- 100-TQFP
- Datasheet:
-
ATF1508AS-10AI100.pdf
- Description:
- IC CPLD 128MC 10NS 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,120
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Product details
Overview
ATF1508AS-10AI100 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 boundary-scan (IEEE 1149.1), in-system programmability, and PCI-compliant I/O drivers - deployed in industrial control logic, legacy bus interface adaptation, and FPGA companion glue logic.
For engineers reviewing the ATF1508AS-10AI100 datasheet, ATF1508AS-10AI100 pinout, ATF1508AS-10AI100 application, or ATF1508AS-10AI100 equivalent, key selection criteria include its 100-lead TQFP package, 5 V core/3.3 V or 5 V I/O flexibility, dual power-down pins (PD1/PD2), programmable slew rate per output, and security fuse protection against unauthorized configuration readback.
Technical Context
The ATF1508AS-10AI100 implements a hierarchical CPLD architecture with eight logic blocks, each fed by a 40-signal global bus carrying all I/O, dedicated input, and buried macrocell feedback signals. Its macrocell structure supports D/T/latch flip-flops, XOR-based arithmetic/comparison, and combinatorial outputs with registered feedback - enabling efficient state machine and wide-sum-term logic synthesis.
It integrates IEEE 1149.1 JTAG BST with full boundary-scan cell coverage on all I/O and input pins, plus ISP programming via TDI/TDO/TCK/TMS. Power management includes automatic 10 µA standby (L-version), pin-controlled 1 mA power-down mode, per-macrocell reduced-power bit, and programmable pin-keeper circuits to eliminate floating inputs without external pull-ups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 128 macrocells - provides gate count equivalent to ~2,000 usable PLD gates for medium-complexity glue logic integration. |
| Pin-to-pin Delay | 7.5 ns - enables reliable timing closure in 100 MHz–125 MHz synchronous designs with minimal routing margin. |
| Max Registered Frequency | 125 MHz - supports high-speed control path timing in industrial PLCs and data acquisition interfaces. |
| I/O Voltage Support | 3.3 V or 5.0 V - allows direct interfacing with both legacy 5 V TTL and modern 3.3 V systems without level shifters. |
| Power-down Current | <10 mA - achieved via PD1/PD2 assertion; retains all register and output states during low-power hold. |
| JTAG Compliance | IEEE Std. 1149.1-1990 & 1149.1a-1993 - enables production testability and field firmware updates without device removal. |
| Security Protection | One-time programmable security fuse - prevents readback of configuration bitstream while preserving User Signature access. |
Pinout & Package
ATF1508AS-10AI100 is packaged in a 100-lead Thin Quad Flat Package (TQFP), RoHS-compliant, with 0.5 mm pitch and exposed thermal pad. Pin assignment matches the 100-lead TQFP top-view layout shown in Atmel doc 0784P–PLD–7/05.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1–25, 75–100 | I/O or dedicated input | Bi-directional pins configurable as inputs, outputs, or bidirectional; each supports programmable slew rate and open-collector option. |
| 26, 27, 28, 29 | GCLK1–GCLK3, GCLR | Global clock inputs and global clear - routed to all macrocells; GCLR supports asynchronous reset with product-term enable. |
| 30, 31, 32, 33 | TCK, TMS, TDI, TDO | JTAG test access port - enables boundary-scan testing and in-system programming; TMS/TDI have optional internal pull-up. |
| 34, 35 | PD1, PD2 | Power-down control - asserted high to enter sub-10 mA standby; disables logic transitions but holds register/output states. |
| 36, 37, 38, 39 | VCCIO ×4 | I/O power supply pins - must be tied to same 3.3 V or 5.0 V rail; decoupling required per datasheet layout guidelines. |
| 40, 41, 42, 43 | VCCINT ×2, GND ×2 | Core logic supply (5.0 V only) and ground - VCCINT powers input buffers compatible with 3.3 V/5.0 V inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable pin-keeper | Prevents floating I/Os without external resistors - reduces system noise and static power by holding last-driven logic state. |
| Per-output slew rate control | Slows edge rates on non-critical outputs to suppress EMI and crosstalk in mixed-signal PCB layouts. |
| Three global clock inputs | Enables multi-domain clocking - e.g., one for control logic, one for data capture, one for status reporting - without internal routing congestion. |
| Buried registered feedback | Allows combinatorial macrocell outputs to feed back registered values - essential for implementing pipelined logic or dual-edge-triggered functions. |
| PCI-compliant I/O drivers | Meets PCI v2.2 DC/AC specs (e.g., VOL ≤ 0.55 V @ 3 mA, IOH ≥ –44 mA) - suitable for add-in card interface logic without external buffers. |
Applications
| Industrial PLC Backplane Interface | Legacy Bus Protocol Translation |
|---|---|
Use Scenario: Adapting MODBUS RTU signals between RS-485 transceivers and microcontroller UART peripherals in factory automation cabinets. IC Role / Device Role / Timing Role: Glue logic CPLD performing signal conditioning, parity generation, and half-duplex direction control with deterministic 7.5 ns latency. Use Value: Eliminates discrete logic and reduces BOM count while maintaining real-time response under 100 µs cycle time requirements. |
Use Scenario: Converting ISA bus timing and handshaking to match ARM-based SoC peripheral controllers in retro-computing hardware upgrades. IC Role / Device Role / Timing Role: Synchronous state machine implementing WAIT, IOR#, IOW#, MEMR#, MEMW# sequencing with 125 MHz register clock domain. Use Value: Enables drop-in replacement of obsolete PAL/GAL devices without PCB redesign, leveraging pin-compatible 100-TQFP footprint. |
| FPGA Configuration Companion | PCI Add-in Card Control Logic |
Use Scenario: Managing FPGA configuration loading, reset synchronization, and status LED sequencing in Xilinx Spartan-6 based embedded vision modules. IC Role / Device Role / Timing Role: CPLD acting as boot controller - asserting FPGA PROGRAM_B, monitoring INIT_B, and driving DONE with precise timing margins. Use Value: Provides fail-safe configuration sequencing independent of host processor, improving system reliability during cold starts. |
Use Scenario: Implementing IDSEL decoding, BAR address mapping, and interrupt arbitration logic on PCIe-to-PCI bridge cards. IC Role / Device Role / Timing Role: PCI-compliant interface logic handling 33 MHz PCI clock domain, meeting setup/hold and drive strength requirements per spec. Use Value: Meets PCI mechanical and electrical compliance without external bus transceivers - reducing layer count and cost in compact add-in cards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1508AS-10AU100 | Same die, 100-lead PQFP package - identical logic resources and timing, but different thermal/mechanical profile. | Preferred where board reflow compatibility with PQFP carriers or legacy tooling exists. | Select when footprint constraints favor PQFP over TQFP; no functional change required. |
| XCR3128XL-10VQ100C | Xilinx CoolRunner-II CPLD: 128 macrocells, 9.5 ns tPD, 3.3 V only I/O, no VCCINT/VCCIO separation. | Lacks 5 V tolerance and PCI drive capability; requires level-shifting for legacy 5 V buses. | Choose for new 3.3 V-only designs prioritizing lower static current (10 µA typical) and longer data retention (>20 years). |
Compared with ATF1508AS-10AI100, the ATF1508AS-10AU100 offers identical functionality in PQFP packaging for alternate assembly processes, while the XCR3128XL-10VQ100C trades 5 V compatibility and PCI compliance for lower power and simplified supply architecture - making it suitable only for green-field 3.3 V systems.
Availability
ATF1508AS-10AI100 is available at Aetrix Electronics and suitable for industrial control systems, legacy bus interface adapters, and FPGA companion logic requiring stable component supply across extended temperature ranges (–40°C to +85°C) and long lifecycle support.
Supply support for ATF1508AS-10AI100 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 ATF1508AS family, including datasheets, design tools, and long-term manufacturing commitments for industrial-grade PLDs.
The ATF1508AS series was designed for high-reliability, in-system programmable glue logic in environments where FPGA configuration volatility or ASIC NRE costs are prohibitive - targeting industrial automation, telecom infrastructure, and military/aerospace subsystems.
FAQ
What is the operating temperature range for ATF1508AS-10AI100?
The ATF1508AS-10AI100 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). The "I" suffix in the part number explicitly denotes industrial grade, distinguishing it from commercial-grade variants rated 0°C to +70°C.
Does ATF1508AS-10AI100 support both 3.3 V and 5.0 V I/O signaling?
Yes, ATF1508AS-10AI100 supports dual-voltage I/O: VCCIO pins may be connected to either 3.3 V (2.7–3.6 V) or 5.0 V (4.75–5.25 V) supplies, while VCCINT must remain at 5.0 V. This allows direct interfacing with mixed-voltage systems - for example, connecting to 3.3 V microcontrollers and 5 V legacy peripherals simultaneously - without external level translators.
How does the power-down feature work on ATF1508AS-10AI100?
The ATF1508AS-10AI100 implements pin-controlled power-down using PD1 and/or PD2 inputs. When either pin is driven high, the device enters a sub-10 mA standby mode while latching all register and output states. Internal logic transitions are blocked, but pin-keeper circuits remain active to prevent floating I/Os. The feature is enabled during design compilation and cannot be toggled dynamically in runtime.
Is ATF1508AS-10AI100 compatible with PCI bus specifications?
Yes, ATF1508AS-10AI100 is explicitly PCI-compliant per PCI Local Bus Specification v2.2. Its I/O drivers meet required DC parameters (e.g., VOL ≤ 0.55 V at 3 mA, VOH ≥ 2.4 V at –4 mA) and AC switching characteristics (IOH(AC) ≥ –44 mA, IOL(AC) ≥ 95 mA), enabling direct use in PCI add-in card control logic without external buffers.
Can ATF1508AS-10AI100 be programmed in-system after soldering to the PCB?
Yes, ATF1508AS-10AI100 supports full in-system programming (ISP) via its 4-pin JTAG interface (TCK/TMS/TDI/TDO), compliant with IEEE Std. 1149.1. Programming can be performed without removing the device from the board, using standard SVF files and Microchip's ISP software or third-party ATE tools - enabling field updates and manufacturing flexibility.
ATF1508AS-10AI100 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:
- 10 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)
ATF1508AS-10AI100 FAQ
1.How can I place an order for ATF1508AS-10AI100 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1508AS-10AI100 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 ATF1508AS-10AI100 reliable?
The price and inventory of ATF1508AS-10AI100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1508AS-10AI100 is usually 5 days.
3.What payment methods are accepted for ATF1508AS-10AI100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1508AS-10AI100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1508AS-10AI100?
ATF1508AS-10AI100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1508AS-10AI100 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 ATF1508AS-10AI100?
For technical support, including ATF1508AS-10AI100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1508AS-10AI100 requirements.
6.How does Aetrix verify that ATF1508AS-10AI100 is sourced from the original manufacturer or authorized distributors?
All ATF1508AS-10AI100 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 ATF1508AS-10AI100 meets industry standards.
7.What is the process for return or replacement of ATF1508AS-10AI100?
All ATF1508AS-10AI100 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1508AS-10AI100, 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 ATF1508AS-10AI100 part is unused and in its original packaging.
Return procedure for ATF1508AS-10AI100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1508AS-10AI100 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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Microchip Technology
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Microchip Technology
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5M160ZE64C5N
Intel
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