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Microchip Technology ATF20V8B-10JC
- Part No.:
- ATF20V8B-10JC
- Manufacturer:
- Microchip Technology
- Category:
- PLDs (Programmable Logic Device)
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
ATF20V8B-10JC.pdf
- Description:
- IC PLD 8MC 10NS 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,252
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Product details
Overview
ATF20V8B-10JC from Atmel is a high-performance, electrically-erasable CMOS programmable logic device (PLD) with 7.5 ns to 10 ns pin-to-pin propagation delay, 8 macrocells each configurable as registered/combinatorial I/O or input, and support for PAL emulation including 20R8, 20L8, and 14L8 families - used in legacy digital control, glue logic replacement, and industrial interface adaptation.
For engineers reviewing the ATF20V8B-10JC datasheet, ATF20V8B-10JC pinout, ATF20V8B-10JC application, or ATF20V8B-10JC equivalent, key selection criteria include its 24-pin DIP-compatible PLCC-28 package, 10 ns speed grade at commercial temperature range (0°C to 70°C), Flash-based reprogrammability, and three-mode architecture (Registered/Complex/Simple) enabling direct PAL drop-in replacement without PCB redesign.
Technical Context
The ATF20V8B-10JC implements a universal 8-macrocell architecture supporting Registered, Complex, and Simple modes - automatically selected by compiler based on register usage and output enable requirements. Each macrocell allocates up to eight product terms to sum logic, with dedicated OE control per output in Complex mode and clocked registers in Registered mode.
It uses Atmel's Flash memory technology for 100 erase/write cycles and 20-year data retention, features internal input/I/O pull-up resistors, supports 5V ±5% supply at commercial temperature, and meets PCI compliance with 2,000V ESD protection and 200 mA latchup immunity - all verified across its PLCC-28 package variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay (tPD) | 10 ns maximum - guarantees timing-critical combinatorial paths meet 100 MHz system clock edge alignment. |
| Supply Voltage | 5V ±5% - compatible with standard TTL/CMOS logic rails without regulation overhead. |
| Operating Temperature | 0°C to 70°C - validated for commercial-grade embedded control and instrumentation applications. |
| Macrocell Count | 8 - provides sufficient logic density for small-state machines, bus arbitration, and address decoding. |
| Product Terms per Macrocell | Up to 8 - enables implementation of multi-input NAND/NOR logic functions within single macrocell. |
| Package Type | 28-lead PLCC (28J) - surface-mount compatible with automated assembly and socket-based prototyping. |
| Power Supply Current (ICC, Standby) | 60–90 mA - defines worst-case quiescent power draw during system idle states. |
Pinout & Package
ATF20V8B-10JC is packaged in a 28-lead Plastic J-Leaded Chip Carrier (PLCC-28, JEDEC MS-018 AB), with 1.27 mm pitch, 12.45 mm × 12.45 mm body, and lead coplanarity ≤0.102 mm - suitable for reflow and wave soldering.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CLK / IN | Global clock input or general-purpose logic input; dual-function pin shared with macrocell 1 feedback path. |
| 2–10, 12–13, 22–24 | IN | Dedicated input pins feeding AND-array; no feedback capability - used for primary signal routing. |
| 14–21 | I/O | Bidirectional macrocell outputs with configurable direction; support registered, combinatorial, or input-only modes. |
| 11 | OE / IN | Output enable control or logic input; active-low global OE when configured as control, otherwise standard input. |
| 25–28 | GND / VCC | Four dedicated power/ground pins (pins 25, 26 = GND; 27, 28 = VCC) ensure low-noise supply distribution. |
Key Features
| Feature | Design Value |
|---|---|
| Flash-based reprogrammability | 100 erase/write cycles with full device verification - enables field firmware updates and design iteration without hardware change. |
| Three automatic configuration modes | Registered/Complex/Simple modes selected by compiler - eliminates manual architecture selection and ensures optimal resource mapping. |
| Internal input/I/O pull-up resistors | Weak active pull-ups prevent floating inputs - removes need for external biasing in unused or tri-stated I/Os. |
| PAL family emulation | Direct replacement for 20R8, 20L8, 14L8, and 16L6 - preserves legacy JEDEC files and simplifies migration from obsolete PALs. |
| Security fuse + 64-bit user signature | One-time programmable security fuse blocks unauthorized readback; 64-bit signature remains readable for traceability and version control. |
Applications
| Industrial Control Logic | Legacy System Glue Logic |
|---|---|
|
Use Scenario: Replacing obsolete 20R8 PALs in motor drive sequencers and PLC I/O modules where board space and BOM continuity are critical. IC Role / Device Role / Timing Role: Configurable registered logic block implementing state-machine control with synchronous clocking and output enable gating. Use Value: Enables drop-in replacement of end-of-life PALs using existing JEDEC files, avoiding PCB redesign and qualification delays. |
Use Scenario: Interfacing mismatched buses (e.g., ISA-to-PCI bridge control) in test equipment requiring level translation and timing synchronization. IC Role / Device Role / Timing Role: Combinatorial logic translator with programmable setup/hold timing (tS = 7.5 ns, tH = 0 ns) for asynchronous protocol bridging. Use Value: Delivers deterministic 10 ns propagation delay and 5V TTL/CMOS compatibility - eliminates discrete gate arrays and reduces component count. |
| Embedded Instrumentation | Automated Test Equipment (ATE) |
|
Use Scenario: Signal conditioning and multiplexing control in portable oscilloscopes and multimeters with tight power budgets. IC Role / Device Role / Timing Role: Low-power combinatorial decoder managing analog front-end channel selection and ADC trigger sequencing. Use Value: Achieves 60–90 mA standby current and supports power-down via OE - extends battery life without sacrificing logic density. |
Use Scenario: Pattern generator control logic in boundary-scan testers requiring precise vector loading and cycle-accurate stimulus timing. IC Role / Device Role / Timing Role: Registered mode sequencer with preload capability - allows deterministic initialization and test vector injection at power-up. Use Value: Built-in power-up reset (tPR = 600–1000 ns) and register preload eliminate external reset circuitry and simplify test automation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable logic device applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF20V8B-10JI | Same architecture and speed grade, but rated for -40°C to +85°C industrial temperature range. | Required for operation in extended ambient environments such as factory-floor controllers or outdoor telemetry units. | Select ATF20V8B-10JI when thermal stress exceeds 70°C ambient or long-term reliability under thermal cycling is mandated. |
| ATF20V8BQ-10JC | Lower standby current (35 mA vs. 60–90 mA) due to optimized quiescent biasing; identical pinout and programming model. | Better suited for battery-powered or thermally constrained systems where active/idle power trade-offs dominate. | Choose ATF20V8BQ-10JC when system-level power budget limits total idle consumption below 50 mA. |
Compared with ATF20V8B-10JC, the ATF20V8B-10JI extends operating range without altering logic behavior or timing, while ATF20V8BQ-10JC reduces ICC(standby) by >40% at same speed - both retain full JEDEC compatibility and require no design changes beyond part number substitution.
Availability
ATF20V8B-10JC is available at Aetrix Electronics and suitable for industrial control logic, legacy system glue logic, embedded instrumentation, and automated test equipment requiring stable component supply and long-term obsolescence mitigation.
Supply support for ATF20V8B-10JC 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 Corporation (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and programmable logic devices - known for Flash-based PLDs and industry-standard architecture compatibility.
The ATF20V8B product line was designed to replace obsolete 24-pin PAL devices with reprogrammable Flash technology, targeting cost-sensitive, medium-complexity digital logic applications in commercial and industrial systems.
FAQ
What is the maximum pin-to-pin propagation delay specified for ATF20V8B-10JC?
The ATF20V8B-10JC has a maximum pin-to-pin propagation delay (tPD) of 10 ns, measured under commercial conditions (0°C to 70°C, VCC = 5V ±5%). This value applies to both input-to-output and feedback-to-output paths with all eight outputs switching, ensuring predictable timing for synchronous logic design and PAL emulation workflows.
Does ATF20V8B-10JC support in-system programming?
No, ATF20V8B-10JC does not support in-system programming (ISP). It requires standard PLD programmers that apply 12.5V VPP during programming/erasing operations. The device must be removed from the target board for reprogramming, consistent with its Flash-based architecture and JEDEC file compatibility requirements.
Can ATF20V8B-10JC emulate a 20R8 PAL device?
Yes, ATF20V8B-10JC fully emulates the 20R8 PAL in Registered Mode, supporting identical JEDEC programming files and pin-compatible functionality. Its eight macrocells, clocked register structure, and eight-product-term-per-output architecture match the 20R8 specification - confirmed in Atmel's functional logic diagrams and compiler mode tables.
What package type is used for ATF20V8B-10JC?
ATF20V8B-10JC uses the 28-lead Plastic J-Leaded Chip Carrier (PLCC-28, package code 28J), compliant with JEDEC MS-018 AB. This surface-mount package features gull-wing leads, 1.27 mm pitch, and a 12.45 mm × 12.45 mm body - compatible with standard reflow profiles and socket-based development.
Is ATF20V8B-10JC RoHS compliant?
Yes, ATF20V8B-10JC is RoHS compliant and qualifies as Pb/Halide-free. Atmel explicitly lists "Green Package Options (Pb/Halide-free/RoHS Compliant)" for the ATF20V8B family, and the -10JC suffix corresponds to the commercial-grade PLCC variant meeting EU Directive 2011/65/EU requirements.
ATF20V8B-10JC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- 20V8
- Package/Case:
- 28-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- EE PLD
- Number of Macrocells:
- 8
- Voltage - Input:
- 5V
- Speed:
- 10 ns
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-PLCC (11.51x11.51)
ATF20V8B-10JC FAQ
1.How can I place an order for ATF20V8B-10JC through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF20V8B-10JC 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 ATF20V8B-10JC reliable?
The price and inventory of ATF20V8B-10JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF20V8B-10JC is usually 5 days.
3.What payment methods are accepted for ATF20V8B-10JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF20V8B-10JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF20V8B-10JC?
ATF20V8B-10JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF20V8B-10JC 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 ATF20V8B-10JC?
For technical support, including ATF20V8B-10JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF20V8B-10JC requirements.
6.How does Aetrix verify that ATF20V8B-10JC is sourced from the original manufacturer or authorized distributors?
All ATF20V8B-10JC 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 ATF20V8B-10JC meets industry standards.
7.What is the process for return or replacement of ATF20V8B-10JC?
All ATF20V8B-10JC units undergo pre-shipment inspection (PSI). If there is an issue with ATF20V8B-10JC, 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 ATF20V8B-10JC part is unused and in its original packaging.
Return procedure for ATF20V8B-10JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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