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Microchip Technology ATF1508AS-10JU84
- Part No.:
- ATF1508AS-10JU84
- Manufacturer:
- Microchip Technology
- Package:
- 84-LCC (J-Lead)
- Datasheet:
-
ATF1508AS-10JU84.pdf
- Description:
- IC CPLD 128MC 10NS 84PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:152
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Product details
Overview
ATF1508AS-10JU84 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), 7.5 ns pin-to-pin delay, and support for registered operation up to 125 MHz. It features JTAG-based in-system programmability (ISP), PCI compliance, and dual-voltage I/O (3.3 V or 5.0 V) - used in legacy industrial control logic consolidation and board-level glue logic replacement.
For engineers reviewing the ATF1508AS-10JU84 datasheet, ATF1508AS-10JU84 pinout, ATF1508AS-10JU84 application, or ATF1508AS-10JU84 equivalent, key selection criteria include its 84-pin PLCC package, 10 ns speed grade (-10), LVTTL/CMOS-compatible I/O, JTAG boundary-scan test support per IEEE 1149.1, and power-down capability via PD1/PD2 pins.
Technical Context
The ATF1508AS-10JU84 implements a hierarchical CPLD architecture with 128 flexible macrocells organized into logic blocks, each fed by a global bus carrying up to 100 inputs plus buried feedback signals. Its switch matrix selects up to 40 signals per block, enabling high-fan-in sum-of-products logic synthesis.
Each macrocell supports D/T/latch flip-flops, individual output enable, programmable slew rate, open-collector output option, and buried registered feedback within combinatorial outputs. Global clock inputs (GCLK1–GCLK3), input transition detection (ITD), and VCC power-up reset with selectable hysteresis provide deterministic state initialization and timing control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 128 macrocells - enables replacement of multiple TTL/SSI/MSI devices in single-chip logic integration. |
| Speed Grade | -10 = 7.5 ns max pin-to-pin delay - meets timing closure for 125 MHz registered operation in synchronous designs. |
| I/O Voltage Support | 3.3 V or 5.0 V on VCCIO pins - allows interoperability with mixed-voltage systems without level shifters. |
| Power Management | 10 µA standby (L-version), pin-controlled 1 mA power-down - reduces quiescent current during idle periods in battery-sensitive or thermal-constrained applications. |
| JTAG Compliance | IEEE Std. 1149.1-1990/1149.1a-1993 - enables boundary-scan testing, ISP programming, and BSDL-based verification without external programmers. |
| PCI Compliance | Meets PCI DC/AC drive requirements (e.g., VOH ≥ 2.4 V at -4 mA, VOL ≤ 0.55 V at 3–6 mA) - suitable for add-in card logic interfacing directly to PCI buses. |
| Security & Configuration | Programmable security fuse + 16-bit user signature - prevents unauthorized cloning while allowing project revision tracking independent of fuse state. |
Pinout & Package
ATF1508AS-10JU84 is packaged in an 84-lead Plastic Leaded Chip Carrier (PLCC), with lead pitch of 0.05 inches (1.27 mm) and body size 1.17 in × 1.17 in (29.7 mm × 29.7 mm). The package is RoHS-compliant, Pb-free, and rated for industrial temperature range (-40°C to +85°C).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1–11, 13–20, 22–32, 34–40, 42–53, 55–60, 62–74, 76–84 | I/O or dedicated input | Bi-directional logic pins; configurable as input, output, or bidirectional; some serve as GCLR, OE1/OE2, GCLK1–GCLK3, or PD1/PD2 when assigned in design. |
| 12, 21, 41, 54, 61, 75 | GND | Ground reference for VCCINT and VCCIO domains; six dedicated ground pins ensure low-noise return paths. |
| 33, 49, 66, 77 | VCCIO | I/O power supply pins - must be tied to 3.3 V or 5.0 V depending on interface voltage; decoupling required per pin. |
| 50, 78 | VCCINT | Core logic power supply - fixed 5.0 V only; powers input buffers and internal logic array; requires tight regulation. |
| 67, 68, 70, 71 | TCK/TMS/TDI/TDO | JTAG TAP controller interface - enables ISP programming and IEEE 1149.1 boundary-scan testing; TMS/TDI have optional pull-up. |
| 47, 48 | PD1 / PD2 | Pin-controlled power-down inputs - asserted high to enter sub-10 mA standby; disables all logic transitions except PD pin itself. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible macrocell architecture | Each of 128 macrocells supports D/T/latch flip-flops, XOR logic for arithmetic/comparison, and buried registered feedback - enables efficient state machine and wide decoder implementation. |
| Enhanced routing resources | Global bus with 100+ signals + regional foldback bus - increases successful place-and-route yield for pin-locked revisions and complex combinational logic. |
| Programmable I/O characteristics | Per-pin slew rate control, open-collector option, and pin-keeper circuitry - eliminates external pull-ups, reduces EMI, and prevents floating inputs during power transitions. |
| Advanced power management | Three-tiered power control: automatic 10 µA standby (L-version), pin-triggered 1 mA power-down, and per-macrocell reduced-power bit - optimizes ICC across operating frequency and activity. |
| Robust configuration security | One-time programmable security fuse blocks readback of fuse pattern; 16-bit user signature remains readable for traceability - balances IP protection with field diagnostics. |
Applications
| Industrial PLC I/O Expansion | Legacy System Glue Logic Replacement |
|---|---|
|
Use Scenario: Adding discrete I/O points to aging programmable logic controllers using space-constrained backplanes. IC Role / Device Role / Timing Role: Configurable logic engine implementing address decoding, strobe generation, and interrupt arbitration between CPU and peripheral modules. Use Value: Replaces 8–12 discrete TTL packages with single ATF1508AS-10JU84, reducing PCB area by >65% and eliminating interconnect skew in 5 V bus interfaces. |
Use Scenario: Modernizing discontinued motherboard designs where original PAL/GAL devices are no longer available. IC Role / Device Role / Timing Role: Pin-compatible functional replacement for obsolete 22V10 or 16V8 devices in boot ROM address latching and bus control logic. Use Value: Maintains identical 84-PLCC footprint and 5 V I/O levels while adding JTAG reprogrammability and 20-year data retention - avoids full board redesign. |
| PCI Add-in Card Control Logic | Test Equipment Signal Conditioning |
|
Use Scenario: Implementing bus arbitration, IDSEL decoding, and configuration register mapping on PCI-based data acquisition cards. IC Role / Device Role / Timing Role: PCI-compliant logic interface handling 33 MHz clock domain crossing, hot-plug detection, and command decode sequencing. Use Value: Meets PCI electrical specs (VOH/VOL, drive strength, AC timing) without external buffers - simplifies signal integrity validation and reduces BOM count. |
Use Scenario: Generating synchronized trigger pulses, channel gating, and calibration waveform shaping in automated test equipment. IC Role / Device Role / Timing Role: High-reliability timing sequencer with deterministic power-up reset and ITD-enabled edge detection on stimulus inputs. Use Value: Achieves <10 ns jitter in pulse-width modulation outputs via registered macrocell paths - improves measurement repeatability in production test fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1508AS-10AU84 | Same logic architecture and speed grade, but in 84-pin TQFP (vs. PLCC); no through-hole mounting support. | Suitable for surface-mount-only production; lacks PLCC socket compatibility and manual rework accessibility. | Select when board assembly uses SMT-only processes and thermal profile permits TQFP reflow. |
| EPM7128SLC84-10 | Intel MAX 7000S CPLD with 128 macrocells, 10 ns speed, but different JTAG/BSDL implementation and no built-in PCI drive capability. | Requires external level-shifting for PCI bus interfacing; lacks integrated pin-keeper and VCC power-up reset hysteresis options. | Select when existing toolchain targets Intel architecture and PCI compliance is not required. |
Compared with ATF1508AS-10AU84 and EPM7128SLC84-10, the ATF1508AS-10JU84 uniquely combines PLCC socketability, native PCI drive strength, and dual-voltage I/O in a single-package solution - making it optimal for legacy system upgrades requiring field-serviceable, drop-in replacements.
Availability
ATF1508AS-10JU84 is available at Aetrix Electronics and suitable for industrial PLC upgrades, legacy motherboard refurbishment, and PCI-based instrumentation requiring stable component supply across extended product lifecycles.
Supply support for ATF1508AS-10JU84 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, BSDL models, and legacy programming tools.
The ATF1508AS series was designed for high-reliability, field-upgradable logic consolidation in industrial, telecom, and test equipment - emphasizing in-system programmability, long-term data retention, and robust power management.
FAQ
What is the maximum operating frequency supported by the ATF1508AS-10JU84?
The ATF1508AS-10JU84 supports registered operation up to 125 MHz, verified by its -10 speed grade (7.5 ns maximum pin-to-pin delay). This frequency applies to synchronous logic paths using global clocks GCLK1–GCLK3; actual system performance depends on routing congestion, macrocell utilization, and I/O loading. The ATF1508AS-10JU84 achieves this while maintaining PCI-compliant drive strength and JTAG testability.
Does the ATF1508AS-10JU84 support both 3.3 V and 5.0 V I/O simultaneously?
No - the ATF1508AS-10JU84 supports either 3.3 V or 5.0 V I/O operation, selected by the VCCIO supply voltage. VCCINT must always be 5.0 V. All I/O pins share the same VCCIO rail; mixed-voltage I/O on a single device is not supported. The ATF1508AS-10JU84's I/O buffers are compatible with both 3.3 V and 5.0 V logic thresholds when VCCIO is set accordingly.
How does the power-down mode function on the ATF1508AS-10JU84?
The ATF1508AS-10JU84 enters power-down mode when PD1 or PD2 is driven high, reducing supply current to under 10 mA. Internal logic states and output levels are latched and held; inputs (except PD pins) are ignored. The ATF1508AS-10JU84 resumes normal operation within 1 µs after PD is pulled low. This feature is enabled in the design source file and disables use of PD pins for logic functions.
Is the ATF1508AS-10JU84 pin-compatible with earlier ATF1508AS variants?
Yes - the ATF1508AS-10JU84 shares identical 84-pin PLCC pinout, power pin assignments (VCCINT/VCCIO/GND), and JTAG interface (TCK/TMS/TDI/TDO) with other ATF1508AS-10Jx variants. Differences are limited to speed grade (-10) and package suffix (U = PLCC), ensuring mechanical and electrical compatibility across the -10JU series.
Can the ATF1508AS-10JU84 be programmed without removing it from the circuit board?
Yes - the ATF1508AS-10JU84 is fully in-system programmable (ISP) via its 4-pin JTAG interface (TCK/TMS/TDI/TDO), compliant with IEEE Std. 1149.1. Programming can be performed using Microchip's ISP software and download cable, third-party ATE tools with SVF support, or microcontroller-based interfaces - all without device removal. The ATF1508AS-10JU84 ships pre-erased and ready for first-time programming.
ATF1508AS-10JU84 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 84-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- 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:
- 64
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 84-PLCC (29.31x29.31)
ATF1508AS-10JU84 FAQ
1.How can I place an order for ATF1508AS-10JU84 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1508AS-10JU84 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-10JU84 reliable?
The price and inventory of ATF1508AS-10JU84 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1508AS-10JU84 is usually 5 days.
3.What payment methods are accepted for ATF1508AS-10JU84?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1508AS-10JU84 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1508AS-10JU84?
ATF1508AS-10JU84 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1508AS-10JU84 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-10JU84?
For technical support, including ATF1508AS-10JU84 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1508AS-10JU84 requirements.
6.How does Aetrix verify that ATF1508AS-10JU84 is sourced from the original manufacturer or authorized distributors?
All ATF1508AS-10JU84 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-10JU84 meets industry standards.
7.What is the process for return or replacement of ATF1508AS-10JU84?
All ATF1508AS-10JU84 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1508AS-10JU84, 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-10JU84 part is unused and in its original packaging.
Return procedure for ATF1508AS-10JU84:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1508AS-10JU84 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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