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Microchip Technology ATF1508ASVL-20JC84
- Part No.:
- ATF1508ASVL-20JC84
- Manufacturer:
- Microchip Technology
- Package:
- 84-LCC (J-Lead)
- Datasheet:
-
ATF1508ASVL-20JC84.pdf
- Description:
- IC CPLD 128MC 20NS 84PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,794
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Product details
Overview
ATF1508ASVL-20JC84 from Microchip Technology (formerly Atmel) is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 128 macrocells, 15 ns maximum pin-to-pin delay, and 3.0–3.6 V operation. It supports registered operation up to 77 MHz, features three global clock inputs, and is packaged in an 84-lead PLCC for industrial temperature range (–40°C to +85°C) applications including legacy system glue logic and FPGA companion control.
For engineers reviewing the ATF1508ASVL-20JC84 datasheet, ATF1508ASVL-20JC84 pinout, ATF1508ASVL-20JC84 application, or ATF1508ASVL-20JC84 equivalent, key selection criteria include JTAG ISP capability, low-power standby (5 µA), programmable slew rate, open-collector output option, and PCI compliance - all confirmed for this exact PLCC-84 "L" version.
Technical Context
The ATF1508ASVL-20JC84 implements a hierarchical CPLD architecture with eight logic chains, each supporting up to 40-product-term sum-of-products logic via cascade paths. Its switch matrix selects up to 40 signals from a global bus fed by all 96 I/Os, four dedicated inputs, and buried macrocell feedback.
Each of its 128 macrocells includes five product terms (expandable to 40 via cascade), configurable D/T/latch flip-flops, individual register control, programmable output enable, and optional registered feedback within combinatorial outputs. ITD circuits on global clocks, inputs, and I/Os support input transition detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 128 macrocells - enables integration of multiple TTL/MSI functions into single device |
| Max Pin-to-pin Delay | 15 ns (–20 speed grade) - ensures timing closure in 66 MHz system clock domains |
| Operating Voltage | 3.0 V to 3.6 V - compatible with 3.3 V logic families and industrial power rails |
| Standby Current | 5 µA (automatic "L" mode) - eliminates need for external power gating in battery-backed systems |
| JTAG Compliance | IEEE Std. 1149.1-1990 & 1149.1a-1993 - enables boundary-scan test and in-system programming without socket removal |
| Package | 84-lead PLCC - through-hole mountable, rework-friendly, and qualified for industrial thermal cycling |
| Temperature Range | –40°C to +85°C - validated for automotive under-hood and industrial control cabinet environments |
Pinout & Package
ATF1508ASVL-20JC84 is housed in an 84-lead Plastic Leaded Chip Carrier (PLCC) package with J-lead geometry, designed for socketed or surface-mount assembly and rework. Pin 1 is marked by corner notch; top view orientation follows standard PLCC convention.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT/GCLR | Asynchronous global clear - resets all macrocell registers simultaneously; may be OR'd with product term |
| 2 | INPUT/OE2/GCLK2 | Multi-function pin - selectable as global clock 2, output enable 2, or general input |
| 12, 45 | I/O/PD1 | Power-down control - asserts low-power mode when driven high; disables logic but retains output states |
| 14 | I/O/TDI | JTAG Test Data In - serial input for boundary-scan instruction/data; pull-up programmable |
| 23 | I/O/TMS | JTAG Test Mode Select - controls TAP controller state machine; pull-up programmable |
| 62 | I/O/TCK | JTAG Test Clock - synchronous edge-triggered clock for scan operations |
| 71 | I/O/TDO | JTAG Test Data Out - serial output for boundary-scan data capture |
| 81 | I/O/GCLK3 | Global clock 3 - feeds clock network to all macrocells; supports ITD circuitry |
| 83, 84 | INPUT/GCLK1, INPUT/OE1 | Dedicated function pins - GCLK1 provides primary clock; OE1 enables group output control |
| GND (7,19,32,42,47,59,72,82) | Ground | Eight distributed ground pins - reduce simultaneous switching noise and improve signal integrity |
| VCC (3,13,26,38,43,53,66,78) | Power Supply | Eight VCCIO pins - decouple I/O power domain; separate VCCINT pins supply core logic |
Key Features
| Feature | Design Value |
|---|---|
| Fast In-System Programmability (ISP) | Enables field firmware updates via JTAG without device removal - critical for deployed industrial controllers |
| Programmable Pin-keeper | Prevents floating inputs/I/Os from causing shoot-through current - eliminates external pull-ups and saves board space |
| Three Global Clock Pins | Supports multi-clock domain designs (e.g., control, interface, and timing domains) with independent routing and ITD |
| Security Fuse | Blocks unauthorized readback of configuration bitstream - protects proprietary logic design IP |
| PCI Compliance | Meets electrical and timing requirements for Peripheral Component Interconnect bus interfacing |
| Reduced-power Macrocell Option | Per-macrocell power gating cuts ICC3 by >50% - extends battery life in portable diagnostic tools |
Applications
| Industrial PLC Backplane Interface | Legacy System Glue Logic Replacement |
|---|---|
Use Scenario: Replacing discrete 74-series logic in programmable logic controller backplanes handling I/O module addressing and handshaking. IC Role / Device Role / Timing Role: CPLD acts as address decoder, strobe generator, and bus arbitration controller with deterministic 15 ns propagation. Use Value: Reduces component count from 12+ ICs to one ATF1508ASVL-20JC84, lowering BOM cost and improving thermal reliability at 85°C ambient. |
Use Scenario: Modernizing aging medical imaging subsystems where TTL-based timing and control logic require obsolescence mitigation. IC Role / Device Role / Timing Role: Provides synchronous state-machine control for CCD sensor readout and ADC triggering with 77 MHz register clocking. Use Value: Enables drop-in replacement of obsolete PALs/PLAs while preserving existing PCB layout and 3.3 V power rail. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
Use Scenario: Managing door lock actuation sequencing, window motor direction control, and fault monitoring in body control units. IC Role / Device Role / Timing Role: Implements safety-critical combinational logic with registered feedback and automatic macrocell disable during sleep mode. Use Value: Achieves 5 µA standby current and AEC-Q100-relevant thermal robustness without external power management ICs. |
Use Scenario: Generating precise stimulus patterns and capturing response signatures in automated test equipment for mixed-signal ASIC validation. IC Role / Device Role / Timing Role: Serves as pattern sequencer and protocol translator between JTAG TAP controller and DUT interface pins. Use Value: Leverages IEEE 1149.1 boundary-scan support and fast 15 ns I/O timing to synchronize test vectors at 66 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCR3128XL-10VQ100C | 128 macrocells, 10 ns tPD, 2.7–3.6 V, 100-pin VQFP - higher speed but no PLCC option | Requires PCB redesign due to different footprint and thermal profile; lacks PD1/PD2 power-down pins | Select if system demands sub-10 ns timing and surface-mount assembly is mandatory |
| LC4128ZC-75T100C | 128 macrocells, 7.5 ns tPD, 1.8 V core / 3.3 V I/O, 100-pin TQFP - lower voltage, higher density per mm² | Not pin-compatible; incompatible VCCINT rail; no JTAG-based security fuse implementation | Choose for ultra-low-power portable instrumentation where 1.8 V core reduces dynamic power by 60% |
Compared with XCR3128XL-10VQ100C and LC4128ZC-75T100C, the ATF1508ASVL-20JC84 uniquely combines 84-lead PLCC packaging, 5 µA automatic standby, and JTAG-programmable pin-keeper - making it the only option for field-serviceable, thermally rugged, and low-quiescent industrial retrofits.
Availability
ATF1508ASVL-20JC84 is available at Aetrix Electronics and suitable for industrial PLC backplane interface, legacy system glue logic replacement, and automotive body control module applications requiring stable component supply across extended lifecycle windows.
Supply support for ATF1508ASVL-20JC84 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 ATF1508ASV(L) family, including BSDL models, programming tools, and long-term obsolescence management.
The ATF1508ASV(L) series was engineered as a high-reliability, in-system programmable CPLD platform targeting industrial control, automotive subsystems, and legacy system modernization - emphasizing pin retention, JTAG security, and wide-temperature operation.
FAQ
What is the operating voltage range for the ATF1508ASVL-20JC84?
The ATF1508ASVL-20JC84 operates over 3.0 V to 3.6 V, fully compliant with 3.3 V logic standards. This range ensures compatibility with industrial power supplies and avoids overvoltage stress on I/O structures. The device guarantees full functionality-including 77 MHz registered operation and 15 ns pin-to-pin delay-across the entire voltage window, as verified in the –40°C to +85°C industrial temperature grade.
Does the ATF1508ASVL-20JC84 support in-system programming (ISP)?
Yes, the ATF1508ASVL-20JC84 supports IEEE 1149.1-compliant in-system programming via its dedicated TDI, TMS, TCK, and TDO pins. ISP allows full configuration bitstream loading and verification without removing the device from the PCB. The ATF1508ASVL-20JC84 also permits disabling JTAG to reclaim all four pins as general-purpose I/O, provided the security fuse remains unprogrammed.
How does the power-down feature work on the ATF1508ASVL-20JC84?
The ATF1508ASVL-20JC84 implements pin-controlled power-down using PD1 (pin 12) and/or PD2 (pin 45). When either pin is driven high, internal logic latches and holds all register and output states while reducing supply current to <5 mA. Inputs other than PD pins are blocked, and pin-keeper circuits maintain I/O levels. The feature is enabled in the design source file and cannot coexist with logic use of the PD pin's macrocell resources.
What is the purpose of the programmable pin-keeper in the ATF1508ASVL-20JC84?
The programmable pin-keeper in the ATF1508ASVL-20JC84 prevents unused input and I/O pins from floating to indeterminate voltages, eliminating shoot-through current and system noise. When enabled, the keeper holds the last driven logic level (high or low) after the driving source is removed. This removes the need for external pull-up/pull-down resistors, saving board area and DC power - especially valuable in high-pin-count industrial interfaces.
Is the ATF1508ASVL-20JC84 RoHS compliant?
Yes, the ATF1508ASVL-20JC84 is RoHS compliant and offered in green (Pb/Halide-free) package options. Its 84-lead PLCC package meets JEDEC standard J-STD-020 moisture sensitivity level (MSL) 3 and is qualified for lead-free reflow soldering profiles. Full compliance documentation, including substance declarations and test reports, is available through Microchip's official product page for ATF1508ASVL-20JC84.
ATF1508ASVL-20JC84 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 84-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- In System Programmable (min 10K program/erase cycles)
- Delay Time tpd(1) Max:
- 20 ns
- Voltage Supply - Internal:
- 3V ~ 3.6V
- Number of Logic Elements/Blocks:
- -
- Number of Macrocells:
- 128
- Number of Gates:
- -
- Number of I/O:
- 64
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 84-PLCC (29.31x29.31)
ATF1508ASVL-20JC84 FAQ
1.How can I place an order for ATF1508ASVL-20JC84 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1508ASVL-20JC84 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 ATF1508ASVL-20JC84 reliable?
The price and inventory of ATF1508ASVL-20JC84 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1508ASVL-20JC84 is usually 5 days.
3.What payment methods are accepted for ATF1508ASVL-20JC84?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1508ASVL-20JC84 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1508ASVL-20JC84?
ATF1508ASVL-20JC84 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1508ASVL-20JC84 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 ATF1508ASVL-20JC84?
For technical support, including ATF1508ASVL-20JC84 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1508ASVL-20JC84 requirements.
6.How does Aetrix verify that ATF1508ASVL-20JC84 is sourced from the original manufacturer or authorized distributors?
All ATF1508ASVL-20JC84 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 ATF1508ASVL-20JC84 meets industry standards.
7.What is the process for return or replacement of ATF1508ASVL-20JC84?
All ATF1508ASVL-20JC84 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1508ASVL-20JC84, 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 ATF1508ASVL-20JC84 part is unused and in its original packaging.
Return procedure for ATF1508ASVL-20JC84:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1508ASVL-20JC84 Tags
-
5M40ZE64C5N
Intel
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ATF1502ASV-15AU44
Microchip Technology
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5M80ZE64C5N
Intel
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5M80ZT100C5N
Intel
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ATF1502AS-10AU44
Microchip Technology
-
ATF1502AS-10JU44
Microchip Technology
-
5M80ZE64I5N
Intel
-
5M80ZT100I5N
Intel
-
LC4032V-75TN48C
Lattice Semiconductor Corporation
-
ATF1504ASV-15AU44
Microchip Technology
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ATF1504AS-10JU44
Microchip Technology
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5M160ZE64C5N
Intel
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