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Microchip Technology ATF1504ASL-20QC100
- Part No.:
- ATF1504ASL-20QC100
- Manufacturer:
- Microchip Technology
- Package:
- 100-BQFP
- Datasheet:
-
ATF1504ASL-20QC100.pdf
- Description:
- IC CPLD 64MC 20NS 100QFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,660
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Product details
Overview
ATF1504ASL-20QC100 from Microchip (formerly Atmel) is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 64 macrocells, 5 product terms per macrocell (expandable to 40), and 7.5 ns pin-to-pin delay. It operates up to 125 MHz in registered mode, supports JTAG-based in-system programming (ISP), and is packaged in a 100-lead TQFP for industrial temperature range (–40°C to +85°C) applications including legacy interface bridging and control logic in embedded systems.
For engineers reviewing the ATF1504ASL-20QC100 datasheet, ATF1504ASL-20QC100 pinout, ATF1504ASL-20QC100 application, or ATF1504ASL-20QC100 equivalent, this device delivers deterministic timing, PCI-compliant I/O drive, programmable slew rate, security fuse protection, and flexible macrocell configuration - critical for reprogrammable control logic in space-constrained industrial PCBs.
Technical Context
The ATF1504ASL-20QC100 implements a hierarchical CPLD architecture with four logic blocks, each fed by a global bus carrying all 68 inputs/I/Os and 64 buried macrocell feedback signals. Its switch matrix selects up to 40 signals per block, enabling high-fan-in sum-of-products logic with cascade chains supporting up to 40 product terms per chain.
Each macrocell integrates configurable D/T/latch flip-flops, XOR/OR/CASCADE logic, individual output enable routing, and programmable input transition detection (ITD) on global clocks, inputs, and I/Os. The device supports three global clock pins (GCLK1–GCLK3), pin-controlled power-down (PD1/PD2), and VCC power-up reset with selectable hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 64 macrocells - provides gate count equivalent to ~1500 usable PLD gates for medium-complexity glue logic |
| Timing Performance | 7.5 ns max pin-to-pin delay (–20 speed grade) - enables synchronous operation at ≤125 MHz registered clock frequency |
| I/O Voltage Support | 3.3 V or 5.0 V I/O - allows direct interfacing with both legacy 5 V TTL and modern 3.3 V systems without level shifters |
| Power Management | 10 µA standby current (L version) - reduces quiescent power in always-on industrial controllers |
| Programmability | JTAG ISP compliant with IEEE 1149.1a - enables field firmware updates without device removal or dedicated programming hardware |
| Security & Reliability | Security fuse + 20-year data retention + 10,000 program/erase cycles - protects IP and ensures long-term configuration integrity |
| PCI Compliance | Meets PCI electrical specifications - supports direct connection to PCI bus without external drivers or termination adjustments |
Pinout & Package
ATF1504ASL-20QC100 is housed in a 100-lead Thin Quad Flat Package (TQFP) with 0.5 mm pitch, body size 14 mm × 14 mm, and exposed thermal pad. Pin functions include 68 bidirectional I/Os, 4 dedicated inputs (GCLK1–GCLK3, GCLR), 2 power-down control pins (PD1, PD2), and 4 JTAG boundary-scan pins (TDI, TDO, TMS, TCK).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GCLK1 / INPUT | Global Clock Input 1 | Primary clock source for register synchronization across all macrocells; also usable as general-purpose input |
| GCLK2 / OE2 / INPUT | Global Clock Input 2 / Output Enable 2 | Dual-function pin: serves as secondary clock or global OE signal; selected via configuration bit |
| GCLK3 / I/O | Global Clock Input 3 / Bidirectional I/O | Third clock input or standard I/O; macrocell resources remain available when used as clock |
| GCLR / INPUT | Global Clear Input | Asynchronous reset for all registers; may be OR'd with product-term reset for selective clearing |
| PD1 / I/O | Power-down Control 1 | Active-high pin that forces device into <10 mA power-down mode; disables logic but retains register state |
| PD2 / I/O | Power-down Control 2 | Secondary power-down trigger; either PD1 or PD2 high activates low-power state |
| TDI / I/O | JTAG Test Data In | Serial input for boundary-scan and ISP; includes optional internal pull-up for robust initialization |
| TDO / I/O | JTAG Test Data Out | Serial output for scan chain; tri-stated when not in JTAG mode, freeing pin for logic use |
| TMS / I/O | JTAG Test Mode Select | Controls TAP controller state machine; internal pull-up option prevents floating during boot |
| TCK / I/O | JTAG Test Clock | System clock for JTAG operations; independent of user logic clocks and unaffected by power-down |
Key Features
| Feature | Design Value |
|---|---|
| Flexible Macrocell Architecture | Each of 64 macrocells supports D/T/latch flip-flops, XOR/OR logic, buried registered feedback, and combinatorial outputs - enabling mixed synchronous/asynchronous logic within single macrocell |
| Programmable Slew Rate | Per-output slew control reduces EMI and crosstalk on high-speed buses; slow default minimizes noise unless fast switching is explicitly required |
| Pin-keeper Circuits | Configurable keeper on all inputs/I/Os eliminates need for external pull-ups, prevents floating-induced shoot-through current and system noise |
| Individual Macrocell Power Control | Reduced-power bit per macrocell cuts dynamic power in unused sections - critical for thermally constrained industrial enclosures |
| Input Transition Detection (ITD) | Dedicated ITD circuits on global clocks, inputs, and I/Os enable glitch-free edge detection without consuming product terms or macrocell resources |
| VCC Power-up Reset | Hysteresis-selectable (Small/Large) reset ensures reliable state machine initialization; Large hysteresis reduces ICC by several hundred µA |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Bridging |
|---|---|
Use Scenario: Adding isolated digital I/O channels to modular PLC backplanes using existing 5 V or 3.3 V signaling standards. IC Role / Device Role / Timing Role: Configurable glue logic implementing address decoding, strobe generation, and handshake protocol translation between CPU and peripheral modules. Use Value: Eliminates discrete logic ICs and reduces BOM count while maintaining deterministic 7.5 ns propagation delay for real-time cycle times. |
Use Scenario: Interfacing microcontrollers with legacy parallel buses (ISA, PC/104) requiring precise timing and voltage-level adaptation. IC Role / Device Role / Timing Role: Timing-critical control unit managing wait-state insertion, bus arbitration, and direction control for bidirectional data paths. Use Value: PCI-compliant drive strength ensures signal integrity on loaded backplane traces without external buffers; JTAG ISP enables field firmware updates. |
| Automated Test Equipment (ATE) Pattern Generator | Medical Device Control Sequencing |
Use Scenario: Generating synchronized stimulus waveforms and capture triggers for semiconductor functional test systems operating at ≤125 MHz. IC Role / Device Role / Timing Role: High-speed sequencer coordinating multiple DACs, ADCs, and relay drivers with sub-ns skew control across I/O banks. Use Value: Three independent global clocks and programmable output enable allow precise phase alignment of stimulus edges across 68 I/Os. |
Use Scenario: Implementing fail-safe startup sequencing and interlock logic in Class II medical devices requiring certified deterministic behavior. IC Role / Device Role / Timing Role: Safety-critical state machine managing power-up ramp sequences, sensor self-test coordination, and emergency shutdown paths. Use Value: Security fuse prevents unauthorized configuration changes; 20-year data retention ensures calibration and safety logic persistence over device lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1504AS-20QC100 | Non-L version: 105 mA standby current vs. 10 µA; no automatic µA standby mode | Suitable for cost-sensitive commercial-temp designs where ultra-low quiescent power is unnecessary | Select when industrial temperature range is not required and board-level power budget permits higher idle current |
| XC95144XL-10TQ100C | Xilinx CoolRunner-II: 144 macrocells, 5 V tolerant I/O, 10 ns tPD, 178 MHz fMAX; no PCI compliance | Better density and speed for new designs; lacks native PCI drive and ITD circuits | Choose for higher logic capacity needs if PCI interface support and input transition detection are not mandatory |
Compared with ATF1504AS-20QC100 and XC95144XL-10TQ100C, the ATF1504ASL-20QC100 uniquely combines industrial temperature operation, µA-level standby, PCI-compliant I/O, and integrated ITD - making it optimal for legacy-interface upgrades in thermally demanding environments where power and signal integrity are co-constrained.
Availability
ATF1504ASL-20QC100 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy bus interface bridging, and automated test equipment pattern generation requiring stable component supply across extended lifecycle programs.
Supply support for ATF1504ASL-20QC100 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 ATF1504AS(L) CPLD family, including design tools, documentation, and long-term manufacturing commitments.
The ATF1504AS(L) product line was engineered for reprogrammable control logic in industrial, automotive, and communications infrastructure - emphasizing in-system programmability, deterministic timing, and robustness in harsh operating environments.
FAQ
What is the maximum operating frequency of the ATF1504ASL-20QC100 in registered mode?
The ATF1504ASL-20QC100 supports registered operation up to 125 MHz, as confirmed by its –20 speed grade rating and AC characteristic fCNT = 125 MHz (minimum clock period 8 ns). This performance is achievable under industrial temperature conditions (–40°C to +85°C) with proper decoupling and layout. The ATF1504ASL-20QC100 achieves this using three global clock inputs and optimized macrocell routing to minimize clock skew and setup/hold violations.
Does the ATF1504ASL-20QC100 support both 3.3 V and 5.0 V I/O interfaces simultaneously?
Yes, the ATF1504ASL-20QC100 supports mixed-voltage I/O operation: VCCIO can be independently set to either 3.0–3.6 V or 4.75–5.25 V, allowing direct interfacing with both 3.3 V and 5.0 V logic families on the same device. The ATF1504ASL-20QC100 does not require external level shifters, and its PCI-compliant outputs maintain signal integrity across both voltage domains without added delay or capacitance.
How does the power-down feature work on the ATF1504ASL-20QC100?
The ATF1504ASL-20QC100 implements pin-controlled power-down via PD1 or PD2: when either pin is driven high, the device enters a sub-10 mA state while latching all register and output states. Inputs (except PD pins) are blocked, but pin-keeper circuits prevent floating. The ATF1504ASL-20QC100 resumes full operation within 1 µs after PD goes low, with no configuration reload required due to non-volatile EEPROM storage.
Is JTAG boundary-scan testing supported on the ATF1504ASL-20QC100?
Yes, the ATF1504ASL-20QC100 fully supports IEEE Std. 1149.1a boundary-scan testing using its dedicated TDI, TDO, TMS, and TCK pins. Each of its 68 I/Os and 4 dedicated inputs has an associated boundary-scan cell (BSC), enabling comprehensive board-level interconnect testing. The ATF1504ASL-20QC100's BSDL file is publicly available and compatible with standard ATE and debug tools.
Can the ATF1504ASL-20QC100 replace older PAL/GAL devices in existing designs?
Yes, the ATF1504ASL-20QC100 is widely used to replace obsolete 22V10, 16V8, and GAL22V10 devices due to its pin-compatible migration path, enhanced routing, and superior timing predictability. Its 64-macrocell architecture and 5-product-term-per-macrocell structure provide ample resource headroom, while the ATF1504ASL-20QC100's in-system programmability eliminates socket-based rework in deployed systems.
ATF1504ASL-20QC100 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 100-BQFP
- Packaging:
- Tray
- 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:
- 4.75V ~ 5.25V
- Number of Logic Elements/Blocks:
- -
- Number of Macrocells:
- 64
- Number of Gates:
- -
- Number of I/O:
- 64
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-PQFP (14x20)
ATF1504ASL-20QC100 FAQ
1.How can I place an order for ATF1504ASL-20QC100 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1504ASL-20QC100 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 ATF1504ASL-20QC100 reliable?
The price and inventory of ATF1504ASL-20QC100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1504ASL-20QC100 is usually 5 days.
3.What payment methods are accepted for ATF1504ASL-20QC100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1504ASL-20QC100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1504ASL-20QC100?
ATF1504ASL-20QC100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1504ASL-20QC100 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 ATF1504ASL-20QC100?
For technical support, including ATF1504ASL-20QC100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1504ASL-20QC100 requirements.
6.How does Aetrix verify that ATF1504ASL-20QC100 is sourced from the original manufacturer or authorized distributors?
All ATF1504ASL-20QC100 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 ATF1504ASL-20QC100 meets industry standards.
7.What is the process for return or replacement of ATF1504ASL-20QC100?
All ATF1504ASL-20QC100 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1504ASL-20QC100, 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 ATF1504ASL-20QC100 part is unused and in its original packaging.
Return procedure for ATF1504ASL-20QC100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1504ASL-20QC100 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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