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Microchip Technology ATF16V8C-7SU
- Part No.:
- ATF16V8C-7SU
- Manufacturer:
- Microchip Technology
- Category:
- PLDs (Programmable Logic Device)
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ATF16V8C-7SU.pdf
- Description:
- IC PLD 8MC 7.5NS 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,183
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Product details
Overview
ATF16V8C-7SU from Microchip Technology (formerly Atmel) is a high-speed, electrically-erasable programmable logic device (EE PLD) in 20-pin SOIC package, delivering 7.5 ns pin-to-pin propagation delay, 100 μA pin-controlled power-down mode, and full 5V ±10% operation over -40°C to +85°C industrial temperature range. It replaces legacy 16R8/16L8 PALs in glue logic, bus interface, and state machine control.
For engineers reviewing the ATF16V8C-7SU datasheet, ATF16V8C-7SU pinout, ATF16V8C-7SU application, or ATF16V8C-7SU equivalent, key selection criteria include its reprogrammable Flash-based architecture, three configurable operating modes (registered/complex/simple), I/O pin-keeper circuits eliminating external pull-ups, and PCI compliance for embedded control systems.
Technical Context
The ATF16V8C-7SU implements an 8-macrocell universal architecture with eight product terms per macrocell, supporting registered, combinatorial, and I/O configurations via software-selectable modes. Its Flash memory enables 100 erase/write cycles and 20-year data retention, while internal pin-keeper circuits maintain logic states without DC current draw.
Power-down is activated by driving pin 4 (PD/I3) high, reducing ICC to ≤100 μA while latching outputs and holding internal states; when disabled, pin 4 functions as a standard logic input. The device supports JEDEC-standard 16V8 fuse files and includes a security fuse plus 64-bit user signature for traceability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation delay (tPD) | 7.5 ns max - ensures timing-critical glue logic meets 100 MHz system clock edges with margin |
| Power-down current | ≤100 μA - enables ultra-low standby power in battery-backed or energy-sensitive industrial controllers |
| Supply voltage range | 5V ±10% - supports stable operation across wide industrial rail tolerances without regulation |
| Operating temperature | -40°C to +85°C - qualified for harsh environments including factory automation and motor drives |
| Pin capacitance (CIN/COUT) | 5–8 pF - minimizes signal loading on high-speed buses and reduces timing skew in dense layouts |
| ESD protection | 2000 V HBM - provides robust handling during board assembly and field service without additional protection |
| Latchup immunity | 200 mA - prevents destructive latchup under transient overvoltage or ground bounce conditions |
Pinout & Package
ATF16V8C-7SU is supplied in a 20-lead, 0.300" wide plastic gull-wing small outline (SOIC) package (JEDEC MS-012AC), RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CLK / I | Global clock input in registered mode; general-purpose logic input in complex/simple modes |
| 4 | PD / I3 | Active-high power-down control; if unused, functions as third logic input (I3) |
| 11 | OE / I9 | Global output enable in registered mode; ninth logic input (I9) in complex/simple modes |
| 12–19 | I/O | Bidirectional macrocell I/O pins with feedback paths enabling full PLD functionality |
| 10, 20 | GND, VCC | Ground and +5V supply pins - decoupling required within 10 mm for stable high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| Reprogrammable Flash memory | Enables in-system logic updates without socket removal; supports 100 erase/write cycles with 20-year data retention |
| Three auto-configurable modes | Registered (PAL16R8 emulation), Complex (PAL16L8), and Simple (PAL10L8) - selected automatically by compiler based on register/OE usage |
| Pin-keeper circuits | Eliminates need for external pull-up resistors on all I/O pins, reducing BOM count and saving ≥0.5 mA per floating pin |
| PCI compliance | Meets PCI Local Bus Specification timing and electrical requirements for direct integration into add-in card designs |
| Security fuse + 64-bit signature | Prevents unauthorized fuse pattern copying while allowing project revision/date storage in accessible user signature field |
Applications
| Industrial PLC I/O Expansion | Legacy System Glue Logic Replacement |
|---|---|
Use Scenario: Adding discrete sensor/actuator interfaces to modular PLC backplanes using space-constrained PCB real estate. IC Role / Device Role / Timing Role: Configurable combinatorial logic block implementing address decoding, signal conditioning, and handshake protocol translation. Use Value: Replaces multiple 74-series TTL chips with single ATF16V8C-7SU, cutting board area by 65% and eliminating inter-chip propagation delays. | Use Scenario: Modernizing aging test equipment control boards originally built with obsolete PAL16L8 devices. IC Role / Device Role / Timing Role: Drop-in functional replacement for PAL16L8 in complex mode, preserving existing JEDEC programming files and PCB layout. Use Value: Maintains full backward compatibility while adding power-down capability and 20-year data retention for long-life deployments. |
| Automated Test Equipment (ATE) Pattern Generator | Motor Drive Control Sequencing |
Use Scenario: Generating synchronized stimulus waveforms for digital IC functional testing at up to 100 MHz. IC Role / Device Role / Timing Role: Registered-mode state machine generating precise timing sequences with 7.5 ns resolution and deterministic setup/hold margins. Use Value: Achieves sub-10 ns timing accuracy without external clock dividers or delay lines, simplifying ATE calibration. | Use Scenario: Implementing safety-critical commutation logic for 3-phase BLDC motor drives in HVAC and industrial fans. IC Role / Device Role / Timing Role: Fault-tolerant logic block monitoring hall sensor inputs and generating gated PWM enable signals with hardware-level lockout. Use Value: Provides fail-safe hardware interlocks independent of MCU firmware, meeting IEC 61800-5-2 functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable logic device applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF16V8B-7SU | Same pinout and architecture but lacks power-down mode; 100-cycle endurance vs. 100 cycles (identical); no security fuse | Lower-cost option where ultra-low standby power is unnecessary and design IP protection is not required | Select when BOM cost reduction outweighs power-down and security features |
| GAL16V8D-15LPN | Erasable EPROM-based (UV), 15 ns speed grade, 100% pin-compatible but requires UV eraser; no power-down or Flash reprogramming | Suitable only for prototyping or low-volume production where field updates are not needed | Choose only for legacy toolchain continuity; not recommended for new designs due to obsolescence and programming limitations |
Compared with ATF16V8B-7SU, the ATF16V8C-7SU adds critical power-down control and security fuse for industrial field upgrades; versus GAL16V8D-15LPN, it enables in-system reprogramming and eliminates UV erasure logistics-making ATF16V8C-7SU the only choice for modern, serviceable embedded control.
Availability
ATF16V8C-7SU is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy system glue logic replacement, and motor drive control sequencing requiring stable component supply across extended product lifecycles.
Supply support for ATF16V8C-7SU 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 its legacy PLD portfolio, including design tools, programming hardware, and technical documentation.
The ATF16V8C series was developed as a Flash-based, drop-in upgrade path for 16V8-family PALs, targeting industrial control, instrumentation, and communications equipment needing field-reprogrammable logic with extended reliability.
FAQ
What is the maximum operating frequency supported by the ATF16V8C-7SU?
The ATF16V8C-7SU supports a maximum external feedback frequency of 100 MHz (1/(tS + tCO) = 1/(5 ns + 5 ns)), and up to 125 MHz with internal feedback. These values are guaranteed across the full industrial temperature range (-40°C to +85°C) and 5V ±10% supply, making ATF16V8C-7SU suitable for high-speed control loops in motor drives and test equipment where deterministic timing is critical.
Does the ATF16V8C-7SU require external pull-up resistors on its I/O pins?
No, the ATF16V8C-7SU integrates internal pin-keeper circuits on all I/O pins, which actively hold the last valid logic state without drawing DC current. This eliminates the need for external pull-up resistors, reducing BOM cost, board space, and static power consumption-particularly valuable in battery-powered or thermally constrained applications using ATF16V8C-7SU.
Can the ATF16V8C-7SU be programmed using standard PAL16V8 development tools?
Yes, the ATF16V8C-7SU is fully JEDEC 16V8-compatible and accepts standard 16V8 fuse files generated by ABEL, CUPL, OrCAD-PLD, and Synario compilers. When the power-down feature is not enabled in the design file, ATF16V8C-7SU operates identically to a standard 16V8 device, ensuring seamless integration into existing toolchains and programming workflows.
How does the power-down mode function on the ATF16V8C-7SU, and what happens to output states during this mode?
When pin 4 (PD/I3) is driven high, the ATF16V8C-7SU enters power-down mode, reducing supply current to ≤100 μA. All registered and combinatorial output data is latched and held; high-Z outputs remain high-Z. Input transitions (except PD) are ignored, and pin-keeper circuits remain active to prevent floating states-ensuring system stability and fast wake-up (<30 ns) when exiting power-down mode in ATF16V8C-7SU.
Is the ATF16V8C-7SU RoHS compliant, and what package type does the "-SU" suffix indicate?
Yes, the ATF16V8C-7SU is RoHS compliant and lead-free, as confirmed by Microchip's ordering code documentation. The "-SU" suffix specifically denotes the 20-lead plastic gull-wing small outline (SOIC) package (JEDEC MS-012AC), 0.300" wide, with green molding compound-making ATF16V8C-7SU suitable for environmentally regulated industrial and medical electronics manufacturing.
ATF16V8C-7SU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- 16V8
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Programmable Type:
- EE PLD
- Number of Macrocells:
- 8
- Voltage - Input:
- 5V
- Speed:
- 7.5 ns
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
ATF16V8C-7SU FAQ
1.How can I place an order for ATF16V8C-7SU through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF16V8C-7SU 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 ATF16V8C-7SU reliable?
The price and inventory of ATF16V8C-7SU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF16V8C-7SU is usually 5 days.
3.What payment methods are accepted for ATF16V8C-7SU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF16V8C-7SU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF16V8C-7SU?
ATF16V8C-7SU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF16V8C-7SU 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 ATF16V8C-7SU?
For technical support, including ATF16V8C-7SU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF16V8C-7SU requirements.
6.How does Aetrix verify that ATF16V8C-7SU is sourced from the original manufacturer or authorized distributors?
All ATF16V8C-7SU 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 ATF16V8C-7SU meets industry standards.
7.What is the process for return or replacement of ATF16V8C-7SU?
All ATF16V8C-7SU units undergo pre-shipment inspection (PSI). If there is an issue with ATF16V8C-7SU, 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 ATF16V8C-7SU part is unused and in its original packaging.
Return procedure for ATF16V8C-7SU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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