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Microchip Technology ATF1508AS-15AI100
- Part No.:
- ATF1508AS-15AI100
- Manufacturer:
- Microchip Technology
- Package:
- 100-TQFP
- Datasheet:
-
ATF1508AS-15AI100.pdf
- Description:
- IC CPLD 128MC 15NS 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,698
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Product details
Overview
ATF1508AS-15AI100 from Microchip Technology (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 boundary-scan (IEEE 1149.1) and in-system programmability for field reconfiguration in industrial control and PCI-compliant interface logic.
For engineers reviewing the ATF1508AS-15AI100 datasheet, ATF1508AS-15AI100 pinout, ATF1508AS-15AI100 application, or ATF1508AS-15AI100 equivalent, key selection criteria include its 100-lead TQFP package, dual VCCINT/VCCIO power domains, programmable slew rate and open-collector outputs, PCI-compliant drive strength, and support for power-down modes via PD1/PD2 pins.
Technical Context
The ATF1508AS-15AI100 implements a hierarchical routing architecture with a global bus feeding all 128 macrocells and regional foldback buses enabling up to 40-product-term sum-of-products logic per chain. Its macrocell structure integrates OR/XOR/cascade logic, configurable D/T/latch flip-flops, and individual product-term clock enables - allowing buried registered feedback within combinatorial outputs.
It supports IEEE 1149.1 boundary-scan testing with dedicated BSCs on all I/O and input pins, and includes three global clock inputs (GCLK1–GCLK3), input transition detection (ITD) circuits, and programmable pin-keeper functionality 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 ~2000 usable PLD gates for integrating TTL/SSI/MSI logic blocks. |
| Propagation Delay | 7.5 ns max pin-to-pin - enables reliable operation in high-speed control paths with tight timing budgets. |
| Maximum Frequency | 125 MHz registered operation - supports synchronous logic in real-time industrial and communications systems. |
| I/O Voltage Support | 3.3 V or 5.0 V selectable per VCCIO domain - allows mixed-voltage system interfacing without level shifters. |
| Power Management | 10 µA standby (L-version), pin-controlled 1 mA power-down - reduces idle current in battery-backed or energy-sensitive applications. |
| JTAG Compliance | IEEE Std. 1149.1-1990 & 1149.1a-1993 - enables standardized boundary-scan test and ISP programming across production and field environments. |
| PCI Compliance | Meets PCI DC/AC drive requirements (e.g., VOH ≥ 2.4 V at –2 mA, VOL ≤ 0.55 V at 3–6 mA) - suitable for direct integration into PCI add-in cards. |
Pinout & Package
ATF1508AS-15AI100 is packaged in a 100-lead Thin Quad Flat Package (TQFP) with 0.5 mm pitch, RoHS-compliant, and rated for industrial temperature range (–40°C to +85°C). The package supports full I/O access with dedicated GCLK, GCLR, OE, and PD pins.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1–25, 26–50, 51–75, 76–100 | Bi-directional I/O / Dedicated Input | Up to 96 user-configurable I/Os; four dedicated pins serve as GCLK1/GCLK2/GCLK3/GCLR or OE1/OE2 - configurable per macrocell for flexible control signal routing. |
| 12, 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, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100 | VCCIO / VCCINT / GND | VCCIO powers I/O drivers (3.3 V or 5.0 V); VCCINT powers internal logic (5.0 V only); multiple GND pins ensure low-noise reference and robust decoupling. |
| 3, 6, 7, 8 | JTAG Interface (TDI, TDO, TCK, TMS) | Standard 4-pin IEEE 1149.1 boundary-scan and ISP port - enables programming and test without removing device from PCB. |
| 11, 13 | Power-down Control (PD1, PD2) | Active-high inputs that force device into <10 mA power-down state; latches internal logic and output states while blocking all other inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Slew Rate | Per-output control between fast (≤3.0 V/ns) and slow (≥0.5 V/ns) edges - reduces EMI and crosstalk in dense PCB layouts. |
| Buried Registered Feedback | Enables combinatorial output with internal register feedback - eliminates need for external latch and saves macrocell resources. |
| Pin-keeper Circuitry | Prevents floating inputs/I/Os by holding last driven state - removes requirement for external pull-up/down resistors and associated DC power loss. |
| Three Global Clock Inputs | GCLK1–GCLK3 support independent clock domains - simplifies multi-clock system design (e.g., data capture + control + status update). |
| Security Fuse | One-time programmable fuse blocks readback of configuration bitstream - protects IP in deployed systems against reverse engineering. |
Applications
| Industrial PLC I/O Expansion | PCI Add-in Card Logic |
|---|---|
Use Scenario: Extending digital I/O capability in programmable logic controllers with deterministic timing and hot-swap tolerance. IC Role / Device Role / Timing Role: CPLD implementing glue logic, address decoding, and interrupt arbitration between microcontroller and peripheral modules. Use Value: 7.5 ns propagation delay ensures sub-microsecond response to field sensor inputs; 125 MHz registered operation synchronizes with real-time control loops. |
Use Scenario: Replacing discrete logic in PCI-based data acquisition or communication cards requiring compliance with PCI electrical specifications. IC Role / Device Role / Timing Role: Configurable interface logic handling PCI bus protocol, IDSEL decoding, and burst-mode handshaking. Use Value: Meets PCI VOL ≤ 0.55 V at 6 mA and VOH ≥ 2.4 V at –2 mA - eliminates need for external bus transceivers. |
| Legacy System Emulation | Power Management Controller |
Use Scenario: Replacing obsolete TTL/MSI logic (e.g., 74LS series) in avionics or medical equipment where redesign is cost-prohibitive. IC Role / Device Role / Timing Role: Pin-compatible functional replacement with identical timing behavior and voltage compatibility. Use Value: 5 V-tolerant inputs and 3.3/5.0 V I/O allow drop-in replacement in mixed-voltage legacy backplanes without board modification. |
Use Scenario: Centralized sequencing and monitoring of power rails in embedded systems with multiple voltage domains. IC Role / Device Role / Timing Role: State machine managing power-up reset, rail enable/disable, fault detection, and thermal shutdown signals. Use Value: Programmable pin-keeper and 10 µA standby current minimize quiescent power during sleep modes - extends battery life in portable devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCR3256XL-10TQ144I | 256 macrocells, 10 ns delay, 3.3 V only, CoolRunner-II architecture | Higher density but no 5 V I/O support; lacks PCI drive specs and pin-keeper | Preferred when higher logic capacity and lower static power are required, and 5 V interfacing is unnecessary. |
| EPM7128SLC84-10 | 128 macrocells, 10 ns delay, 5 V only, MAX 7000S architecture | No 3.3 V I/O option; no JTAG ISP; requires external programmer; no power-down pins | Consider only for legacy 5 V-only designs where field reprogramming is not needed and board space permits larger PLCC package. |
Compared with XCR3256XL-10TQ144I and EPM7128SLC84-10, the ATF1508AS-15AI100 uniquely combines 3.3/5 V I/O flexibility, PCI compliance, pin-keeper, and dual power-down control - making it optimal for industrial upgrades and mixed-voltage PCI systems requiring field updates.
Availability
ATF1508AS-15AI100 is available at Aetrix Electronics and suitable for industrial PLCs, PCI add-in cards, legacy system emulation, and power management controllers requiring stable component supply across extended lifecycle deployments.
Supply support for ATF1508AS-15AI100 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, programming tools, and long-term supply commitments for industrial-grade components.
The ATF1508AS series was designed as a high-reliability, in-system programmable CPLD for industrial automation, telecom infrastructure, and embedded control - emphasizing pin-lock stability, mixed-voltage interoperability, and field-upgradable logic.
FAQ
What is the operating temperature range for ATF1508AS-15AI100?
The ATF1508AS-15AI100 is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed by its "I" suffix in the part number and validated in the DC operating conditions table of the official datasheet (Rev. 0784P–PLD–7/05), ensuring reliability in harsh environments such as factory automation and outdoor telecom equipment.
Does ATF1508AS-15AI100 support both 3.3 V and 5.0 V I/O simultaneously?
Yes, ATF1508AS-15AI100 supports simultaneous 3.3 V and 5.0 V I/O through separate VCCIO and VCCINT power domains: VCCINT must be 5.0 V for internal logic, while VCCIO can be independently set to either 3.3 V or 5.0 V per bank - enabling direct interfacing with mixed-voltage peripherals without level-shifting circuitry.
How does the power-down feature work on ATF1508AS-15AI100?
The ATF1508AS-15AI100 supports pin-controlled power-down via PD1 and PD2 inputs. When either pin is driven high, the device enters a sub-10 mA state while latching all internal logic and output states. During power-down, inputs (except PD pins) are ignored, and pin-keeper circuits prevent floating - preserving system integrity during low-power modes.
Is ATF1508AS-15AI100 compatible with PCI bus specifications?
Yes, ATF1508AS-15AI100 is explicitly PCI-compliant per its datasheet (Section 11), meeting key DC/AC requirements: VOH ≥ 2.4 V at –2 mA, VOL ≤ 0.55 V at 3–6 mA, and drive strength curves matching PCI pull-up/pull-down voltage-current profiles - enabling direct use in PCI add-in card designs.
Can ATF1508AS-15AI100 be programmed in-system after soldering to the PCB?
Yes, ATF1508AS-15AI100 supports full in-system programming (ISP) via its 4-pin JTAG interface (TDI, TDO, TCK, TMS), compliant with IEEE 1149.1. Programming can be performed using SVF files, Atmel ISP software, or third-party ATE tools - eliminating the need to remove the device for reconfiguration during manufacturing or field updates.
ATF1508AS-15AI100 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:
- 15 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-15AI100 FAQ
1.How can I place an order for ATF1508AS-15AI100 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1508AS-15AI100 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-15AI100 reliable?
The price and inventory of ATF1508AS-15AI100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1508AS-15AI100 is usually 5 days.
3.What payment methods are accepted for ATF1508AS-15AI100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1508AS-15AI100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1508AS-15AI100?
ATF1508AS-15AI100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1508AS-15AI100 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-15AI100?
For technical support, including ATF1508AS-15AI100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1508AS-15AI100 requirements.
6.How does Aetrix verify that ATF1508AS-15AI100 is sourced from the original manufacturer or authorized distributors?
All ATF1508AS-15AI100 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-15AI100 meets industry standards.
7.What is the process for return or replacement of ATF1508AS-15AI100?
All ATF1508AS-15AI100 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1508AS-15AI100, 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-15AI100 part is unused and in its original packaging.
Return procedure for ATF1508AS-15AI100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1508AS-15AI100 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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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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Intel
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