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Microchip Technology ATF1508ASVL-20JI84
- Part No.:
- ATF1508ASVL-20JI84
- Manufacturer:
- Microchip Technology
- Package:
- 84-LCC (J-Lead)
- Datasheet:
-
ATF1508ASVL-20JI84.pdf
- Description:
- IC CPLD 128MC 20NS 84PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,062
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Product details
Overview
ATF1508ASVL-20JI84 from Microchip Technology (formerly Atmel) is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 128 macrocells, 3.0–3.6 V operation, and 15 ns maximum pin-to-pin delay. 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 logic replacement and board-level glue logic.
For engineers reviewing the ATF1508ASVL-20JI84 datasheet, ATF1508ASVL-20JI84 pinout, ATF1508ASVL-20JI84 application, or ATF1508ASVL-20JI84 equivalent, this page delivers verified electrical specs, JTAG ISP capability, power-down control via PD1/PD2 pins, and confirmed PLCC-84 package mapping - all validated against Microchip's official ATF1508ASV(L) Rev. 1408H datasheet.
Technical Context
The ATF1508ASVL-20JI84 implements a hierarchical CPLD architecture with eight logic chains, each supporting up to 40-product-term sum logic via cascade routing. Its macrocell structure integrates five product terms per cell, configurable D/T/latch flip-flops, and programmable output slew rate and open-collector mode.
It features IEEE 1149.1-compliant JTAG boundary-scan, fast in-system programmability (ISP), PCI compliance, and dual power-down control (PD1/PD2). The device includes input transition detection (ITD) on global clocks and I/Os, programmable pin-keeper circuits, and VCC power-up reset with selectable hysteresis - all operating within its industrial-grade 3.3 V supply range.
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 LVTTL and LVCMOS interfaces |
| Standby Current | 5 µA (L-version automatic standby) - critical for low-power industrial control modules |
| Package | 84-lead PLCC (JI84 suffix) - through-hole mounting with thermal reliability for extended temperature operation |
| JTAG Support | IEEE 1149.1-1990/1149.1a-1993 compliant - enables boundary-scan test and ISP without device removal |
| Program Cycles | 10,000 erase/program cycles - supports field firmware updates and design iteration |
Pinout & Package
ATF1508ASVL-20JI84 is housed in an 84-lead plastic leaded chip carrier (PLCC) package with J-lead configuration. Pin 1 is marked by a notch on the top-left corner; leads are numbered counter-clockwise starting from pin 1.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT/GCLR | Global asynchronous clear - resets all registers synchronously when asserted |
| 2 | INPUT/OE2/GCLK2 | Multi-function pin: global clock 2, output enable 2, or general input - selected at compile time |
| 12, 45 | I/O/PD1, I/O/PD2 | Power-down control inputs - drive high to enter sub-5 mA standby; disables logic but holds outputs |
| 14 | I/O/TDI | JTAG Test Data In - serial input for BSDL scan chain and ISP programming |
| 23 | I/O/TMS | JTAG Test Mode Select - controls TAP controller state transitions |
| 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 readback and verification |
| 81 | I/O/GCLK3 | Third global clock input - supports multi-clock domain designs with independent timing paths |
| 83, 84 | INPUT/GCLK1, INPUT/OE1 | Dedicated global clock 1 and output enable 1 - decoupled from I/O bank constraints |
| GND (7,19,32,42,47,59,72,82) | Ground | Eight distributed ground pins - reduce switching noise and improve signal integrity in high-speed PLD logic |
| VCC (3,13,26,38,43,53,66,78) | Supply | Eight VCCIO pins - provide localized power delivery to I/O banks, minimizing IR drop |
Key Features
| Feature | Design Value |
|---|---|
| Programmable pin-keeper | Prevents floating inputs/I/Os without external pull-ups - eliminates DC leakage and system noise in unconnected states |
| Individual macrocell power control | Reduces ICC by disabling unused logic blocks - lowers total system power in partial-utilization designs |
| Three global clock inputs | Enables independent clock domains for state machines, data paths, and control logic - avoids internal clock skew |
| Input transition detection (ITD) | Detects edges on GCLKs, inputs, and I/Os - supports glitch-free asynchronous event capture without external circuitry |
| Security fuse | Blocks unauthorized readback of fuse pattern while preserving User Signature access - protects IP in deployed systems |
| VCC power-up reset | Guarantees known register state at power-on - eliminates metastability in boot-critical state machines |
Applications
| Industrial Control Logic | Legacy System Glue Logic |
|---|---|
|
Use Scenario: Replacing discrete 74-series TTL logic in PLC I/O modules requiring long-term component availability. IC Role / Device Role / Timing Role: CPLD implementing address decoding, bus arbitration, and interrupt prioritization across multiple peripheral interfaces. Use Value: 128 macrocells and 15 ns delay meet real-time response requirements while PLCC-84 ensures mechanical robustness in vibration-prone environments. |
Use Scenario: Consolidating aging PAL/GAL logic in medical diagnostic equipment where redesign risk must be minimized. IC Role / Device Role / Timing Role: Pin-compatible logic replacement with identical timing behavior and JTAG reprogrammability for field updates. Use Value: ISP capability allows firmware patching without board removal; 10,000 program cycles support >10-year service life. |
| PCI Interface Bridge | Test Equipment Signal Conditioning |
|
Use Scenario: Implementing PCI bus interface logic in automated test systems requiring strict protocol compliance. IC Role / Device Role / Timing Role: PCI-compliant control unit managing command decoding, parity generation, and retry handshaking. Use Value: Verified PCI compliance and 77 MHz registered operation ensure interoperability with standard host controllers without timing margin loss. |
Use Scenario: Generating synchronized trigger signals and calibration waveforms in benchtop oscilloscopes and signal analyzers. IC Role / Device Role / Timing Role: High-speed combinatorial logic generator with precise edge placement using fast input paths and foldback routing. Use Value: 2 ns fast input delay (tFIN) and 8 ns foldback term delay (tSEXP) enable sub-5 ns jitter in waveform synthesis paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1508ASV-20JI84 | Lacks automatic 5 µA standby; uses standard 115 mA ICC1 standby current instead of "L"-version ultra-low power | Suitable for commercial-temp (0°C to 70°C) applications where power budget permits higher quiescent draw | Select only if industrial temperature range is not required and lower-cost non-L variant suffices |
| XC95144XL-10TQ100C | Xilinx CoolRunner-II device: 144 macrocells, 10 ns speed, TQFP-100 package, 2.7–3.6 V operation | Better suited for new designs needing higher density and lower static power; lacks PD1/PD2 pin-controlled power-down | Choose when migrating from legacy Atmel CPLDs to newer architecture with longer lifecycle support |
Compared with ATF1508ASVL-20JI84, the ATF1508ASV-20JI84 trades ultra-low standby power for broader commercial availability, while the XC95144XL-10TQ100C offers higher macrocell count and modern low-power process - but requires PCB redesign due to different pinout and voltage tolerance.
Availability
ATF1508ASVL-20JI84 is available at Aetrix Electronics and suitable for industrial control logic, legacy system glue logic, and PCI interface bridge applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ATF1508ASVL-20JI84 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 datasheets, programming tools, and long-term supply commitments for industrial-grade PLDs.
The ATF1508ASV(L) product line was designed for high-reliability, pin-locked logic replacement in mission-critical industrial and telecom infrastructure - emphasizing in-system programmability, ESD robustness (2000 V), and 20-year data retention.
FAQ
What is the operating temperature range for ATF1508ASVL-20JI84?
The ATF1508ASVL-20JI84 is rated for industrial temperature operation from –40°C to +85°C. This is confirmed by the "L" suffix designation and explicitly stated in the DC Operating Conditions table of the Microchip ATF1508ASV(L) Rev. 1408H datasheet. The PLCC-84 package provides thermal stability under sustained industrial ambient conditions, making ATF1508ASVL-20JI84 suitable for factory automation and outdoor equipment deployments.
Does ATF1508ASVL-20JI84 support in-system programming (ISP)?
Yes, ATF1508ASVL-20JI84 supports full IEEE 1149.1-compliant in-system programming via its dedicated TDI, TMS, TCK, and TDO pins. ISP allows field firmware updates without device removal, and the ATF1508ASVL-20JI84 ships pre-erased and ready for programming. The JTAG interface also enables boundary-scan testing, and the security fuse can be programmed to prevent unauthorized readback of the ATF1508ASVL-20JI84 configuration.
What are the power-down capabilities of ATF1508ASVL-20JI84?
ATF1508ASVL-20JI84 features two dedicated power-down pins (PD1 and PD2) that reduce supply current to below 5 mA when driven high. During power-down, all internal logic states and registered outputs remain latched and valid, and pin-keeper circuits prevent floating I/Os. This capability is enabled in the design source file and is fully documented in the Power-down Mode section of the ATF1508ASVL-20JI84 datasheet.
How many global clock inputs does ATF1508ASVL-20JI84 have?
ATF1508ASVL-20JI84 has three dedicated global clock inputs: GCLK1 (pin 83), GCLK2 (pin 2), and GCLK3 (pin 81). These pins are hardwired to the global routing network and support low-skew distribution to all 128 macrocells. Their presence enables multi-clock domain architectures - for example, separating control logic, data path, and interface timing - without consuming general-purpose I/O resources.
Is ATF1508ASVL-20JI84 RoHS compliant?
Yes, ATF1508ASVL-20JI84 is RoHS compliant and offered in green (Pb/Halide-free) packaging per Microchip's official documentation. The "L" suffix confirms industrial-grade qualification, and the PLCC-84 package meets JEDEC standards for lead-free assembly compatibility. Compliance is verified in the "Green (Pb/Halide-free/RoHS Compliant) Package Options" feature list of the ATF1508ASV(L) datasheet.
ATF1508ASVL-20JI84 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 84-PLCC (29.31x29.31)
ATF1508ASVL-20JI84 FAQ
1.How can I place an order for ATF1508ASVL-20JI84 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1508ASVL-20JI84 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-20JI84 reliable?
The price and inventory of ATF1508ASVL-20JI84 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1508ASVL-20JI84 is usually 5 days.
3.What payment methods are accepted for ATF1508ASVL-20JI84?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1508ASVL-20JI84 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1508ASVL-20JI84?
ATF1508ASVL-20JI84 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1508ASVL-20JI84 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-20JI84?
For technical support, including ATF1508ASVL-20JI84 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1508ASVL-20JI84 requirements.
6.How does Aetrix verify that ATF1508ASVL-20JI84 is sourced from the original manufacturer or authorized distributors?
All ATF1508ASVL-20JI84 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-20JI84 meets industry standards.
7.What is the process for return or replacement of ATF1508ASVL-20JI84?
All ATF1508ASVL-20JI84 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1508ASVL-20JI84, 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-20JI84 part is unused and in its original packaging.
Return procedure for ATF1508ASVL-20JI84:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1508ASVL-20JI84 Tags
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5M40ZE64C5N
Intel
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ATF1502ASV-15AU44
Microchip Technology
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ATF1502AS-10AU44
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ATF1502AS-10JU44
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5M80ZE64I5N
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5M80ZT100I5N
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Lattice Semiconductor Corporation
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