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Microchip Technology ATF1508AS-7QC100
- Part No.:
- ATF1508AS-7QC100
- Manufacturer:
- Microchip Technology
- Package:
- 100-BQFP
- Datasheet:
-
ATF1508AS-7QC100.pdf
- Description:
- IC CPLD 128MC 7.5NS 100QFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,537
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Product details
Overview
ATF1508AS-7QC100 from Atmel is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 128 macrocells, 5 product terms per macrocell (expandable to 40), 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), 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-7QC100 datasheet, ATF1508AS-7QC100 pinout, ATF1508AS-7QC100 application, or ATF1508AS-7QC100 equivalent, key selection considerations include its 100-lead TQFP package, dual VCCINT/VCCIO supply architecture (5V core / 3.3V or 5V I/O), programmable slew rate, pin-keeper option, and JTAG-based in-system programmability without device removal.
Technical Context
The ATF1508AS-7QC100 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 supports D/T/latch flip-flops, XOR-based arithmetic, and combinatorial outputs with registered feedback - enabling efficient sum-of-products logic up to 40 terms via cascade chains.
It integrates IEEE 1149.1 boundary-scan testing using dedicated TDI/TDO/TCK/TMS pins, supports PCI-compliant drive strength (±44 mA high/95 mA low), and provides two power-down control pins (PD1/PD2) that reduce ICC to <10 mA while latching internal states and preserving output validity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 128 macrocells - enables integration of multiple TTL/SSI/MSI functions into single device |
| Pin-to-pin Delay | 7.5 ns - ensures timing closure in high-speed control path designs |
| Max Registered Frequency | 125 MHz - supports synchronous logic in data acquisition and communication interfaces |
| I/O Voltage Support | 3.3 V or 5.0 V - allows direct interfacing with mixed-voltage systems without level shifters |
| Global Clock Pins | 3 - enables independent clock domains for state machines, counters, and data pipelines |
| Power-down Current | <10 mA - reduces system standby power in battery-backed or energy-sensitive applications |
| JTAG Compliance | IEEE Std. 1149.1-1990 & 1149.1a-1993 - enables standardized board-level test and ISP programming |
Pinout & Package
ATF1508AS-7QC100 is housed in a 100-lead Thin Quad Flat Package (TQFP) with 0.5 mm pitch, thermally enhanced for industrial ambient operation (–40°C to +85°C). Package dimensions are 14 mm × 14 mm × 1.4 mm.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1–25, 26–50, 51–75, 76–100 | I/O or dedicated input | Bi-directional pins configurable as inputs, outputs, or registers; includes PD1, PD2, GCLK1–3, GCLR, OE1/OE2 |
| TCK, TMS, TDI, TDO | JTAG Test Access Port | Enable boundary-scan testing and in-system programming; pull-up optional on TMS/TDI |
| VCCINT | Core power supply | Must be connected to 5.0 V ±5%; powers input buffers and logic array |
| VCCIO | I/O power supply | Configurable for 3.3 V (2.7–3.6 V) or 5.0 V (4.75–5.25 V); sets output drive voltage level |
| GND | Ground reference | Multiple ground pins distributed across package for noise reduction and signal integrity |
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 |
| Individual Slew Rate Control | Per-output fast/slow switching selection - reduces EMI in timing-critical or noise-sensitive PCB layouts |
| Reduced-power Macrocell Bit | Per-macrocell power gating - lowers dynamic current in unused or infrequently toggling logic sections |
| Three Global Clock Inputs | Dedicated GCLK1/GCLK2/GCLK3 pins - enable multi-domain clocking without consuming I/O resources |
| Security Fuse | One-time programmable fuse - prevents unauthorized readback of configuration bitstream while preserving User Signature access |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Adapter |
|---|---|
Use Scenario: Extending discrete I/O points in programmable logic controllers using parallel control buses (e.g., ISA, VME). IC Role / Device Role / Timing Role: Glue logic CPLD implementing address decoding, strobe generation, and handshake synchronization between microcontroller and peripheral modules. Use Value: 7.5 ns propagation delay and 125 MHz register speed ensure deterministic response to real-time control interrupts and sensor sampling triggers. | Use Scenario: Bridging 5 V TTL logic subsystems (e.g., older ADCs, DACs, UARTs) to modern 3.3 V microcontrollers. IC Role / Device Role / Timing Role: Level-shifting and protocol translation CPLD with configurable I/O voltage (VCCIO = 3.3 V or 5.0 V) and programmable output enable. Use Value: Dual-supply architecture (VCCINT = 5 V, VCCIO selectable) eliminates need for discrete level shifters and reduces BOM count. |
| FPGA Companion Logic | PCI Local Bus Controller |
Use Scenario: Offloading configuration management, reset sequencing, and status monitoring from FPGA-based embedded systems. IC Role / Device Role / Timing Role: State-machine-based control hub managing FPGA initialization, JTAG access arbitration, and thermal/fault monitoring signals. Use Value: On-chip power-up reset with large/small hysteresis options ensures reliable state machine startup across varying VCC ramp profiles. | Use Scenario: Implementing PCI bus master arbitration, address/data multiplexing, and parity generation in add-in cards. IC Role / Device Role / Timing Role: PCI-compliant CPLD providing 5 V signaling with ±44 mA source / 95 mA sink capability per I/O pin. Use Value: Meets PCI DC/AC specifications including VOL ≤ 0.55 V at 3 mA, VOH ≥ 2.4 V at –2 mA, and SLEWR/SLEWF 0.5–3.0 V/ns. |
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, no VCCINT/VCCIO separation | Higher density but lacks 5 V tolerance and PCI drive strength | Select when migrating to 3.3 V-only systems requiring more logic resources and lower static power |
| EPM7256SQC208-10 | 256 macrocells, 10 ns delay, 5 V only, non-JTAG ISP (requires UV erasure) | Higher pin count (208), no in-system programmability via JTAG | Select only for legacy 5 V-only designs where field reprogramming is not required |
Compared with XCR3256XL-10TQ144I and EPM7256SQC208-10, the ATF1508AS-7QC100 uniquely supports mixed-voltage I/O, PCI-compliant drive, and JTAG-based field updates - making it optimal for industrial retrofits and mixed-signal control boards where voltage flexibility and serviceability are critical.
Availability
ATF1508AS-7QC100 is available at Aetrix Electronics and suitable for industrial PLC expansion, legacy bus interface adaptation, and FPGA companion logic requiring stable component supply across extended lifecycle programs.
Supply support for ATF1508AS-7QC100 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
Atmel (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and programmable logic devices for industrial, automotive, and communications markets.
The ATF1508AS family was designed as a high-performance, in-system programmable CPLD targeting legacy system upgrades, interface bridging, and real-time control logic - emphasizing pin compatibility, mixed-voltage I/O, and JTAG accessibility.
FAQ
What is the operating temperature range for the ATF1508AS-7QC100?
The ATF1508AS-7QC100 is rated for industrial temperature operation from –40°C to +85°C. This range is validated under both 5.0 V and 3.3 V I/O configurations and applies to all specified AC/DC parameters, including JTAG boundary-scan and PCI-compliant drive characteristics. The device uses Atmel's advanced EE technology to maintain reliability across thermal cycling.
Does the ATF1508AS-7QC100 support in-system programming (ISP)?
Yes, the ATF1508AS-7QC100 supports full in-system programming via its 4-pin JTAG interface (TCK/TMS/TDI/TDO), compliant with IEEE Std. 1149.1. Programming is performed using 5 V TTL-level signals, and SVF files generated by Atmel ISP software are compatible with standard ATE equipment. The ATF1508AS-7QC100 ships erased and ready for immediate ISP deployment.
How does the dual-supply architecture (VCCINT/VCCIO) function in the ATF1508AS-7QC100?
The ATF1508AS-7QC100 separates core logic power (VCCINT = 5.0 V ±5%) from I/O drive power (VCCIO = 2.7–3.6 V or 4.75–5.25 V). This allows interfacing with both 3.3 V and 5.0 V peripherals without external level shifters. Input buffers remain compatible with either voltage, while output drive strength and logic thresholds scale with VCCIO - verified in PCI DC/AC specs.
Can the ATF1508AS-7QC100 be used in PCI-compliant designs?
Yes, the ATF1508AS-7QC100 meets PCI specification requirements for 5 V signaling, including VOH ≥ 2.4 V at –2 mA, VOL ≤ 0.55 V at 3 mA, and AC drive currents up to –44 mA (high) and 95 mA (low). Its I/O structure supports PCI pull-up/pull-down voltage-to-current curves and has been characterized per PCI DC/AC test conditions in the official datasheet.
What is the purpose of the PD1 and PD2 pins on the ATF1508AS-7QC100?
The PD1 and PD2 pins on the ATF1508AS-7QC100 provide optional pin-controlled power-down mode. When asserted high (with feature enabled in design file), they reduce ICC to <10 mA while latching all internal logic states and maintaining valid registered/combinatorial outputs. During power-down, input transitions are ignored except on PD1/PD2, and pin-keeper circuits prevent floating I/Os - critical for low-power standby in industrial systems.
ATF1508AS-7QC100 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 100-BQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- In System Programmable (min 10K program/erase cycles)
- Delay Time tpd(1) Max:
- 7.5 ns
- Voltage Supply - Internal:
- 4.75V ~ 5.25V
- Number of Logic Elements/Blocks:
- -
- Number of Macrocells:
- 128
- Number of Gates:
- -
- Number of I/O:
- 80
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-PQFP (14x20)
ATF1508AS-7QC100 FAQ
1.How can I place an order for ATF1508AS-7QC100 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1508AS-7QC100 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-7QC100 reliable?
The price and inventory of ATF1508AS-7QC100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1508AS-7QC100 is usually 5 days.
3.What payment methods are accepted for ATF1508AS-7QC100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1508AS-7QC100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1508AS-7QC100?
ATF1508AS-7QC100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1508AS-7QC100 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-7QC100?
For technical support, including ATF1508AS-7QC100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1508AS-7QC100 requirements.
6.How does Aetrix verify that ATF1508AS-7QC100 is sourced from the original manufacturer or authorized distributors?
All ATF1508AS-7QC100 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-7QC100 meets industry standards.
7.What is the process for return or replacement of ATF1508AS-7QC100?
All ATF1508AS-7QC100 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1508AS-7QC100, 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-7QC100 part is unused and in its original packaging.
Return procedure for ATF1508AS-7QC100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1508AS-7QC100 Tags
-
5M40ZE64C5N
Intel
-
ATF1502ASV-15AU44
Microchip Technology
-
5M80ZE64C5N
Intel
-
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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