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Microchip Technology ATF1508ASL-25QC160
- Part No.:
- ATF1508ASL-25QC160
- Manufacturer:
- Microchip Technology
- Package:
- 160-BQFP
- Datasheet:
-
ATF1508ASL-25QC160.pdf
- Description:
- IC CPLD 128MC 25NS 160QFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ATF1508ASL-25QC160 from Microchip Technology (formerly Atmel) is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 128 macrocells, 5 product terms per macrocell (expandable to 40), 7.5 ns pin-to-pin delay, and support for 125 MHz registered operation. It features three global clock inputs, JTAG boundary-scan (IEEE 1149.1), in-system programmability, and operates with 3.3 V or 5.0 V I/O on a 5.0 V core - deployed in industrial control logic, PCI interface glue logic, and legacy system re-engineering.
For engineers reviewing the ATF1508ASL-25QC160 datasheet, ATF1508ASL-25QC160 pinout, ATF1508ASL-25QC160 application, or ATF1508ASL-25QC160 equivalent, key selection criteria include its 160-pin PQFP package, L-version low-power standby (10 µA), PCI-compliant I/O drive strength, programmable slew rate, and dual VCCINT/VCCIO supply architecture.
Technical Context
The ATF1508ASL-25QC160 implements a hierarchical CPLD architecture with eight logic blocks, each fed by a 40-signal global bus and regional foldback buses. Its macrocells support D/T/latch flip-flops, combinatorial outputs with registered feedback, and ITD (Input Transition Detection) on global clocks, inputs, and I/Os.
It integrates IEEE 1149.1 JTAG BST with dedicated TDI/TDO/TMS/TCK pins, supports Fast ISP via the same interface, and includes power-up reset with selectable hysteresis, security fuse protection, and 16-bit user signature memory accessible regardless of fuse state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 128 macrocells - provides gate count equivalent to ~2000–2500 usable PLD gates for medium-complexity glue logic and state machines. |
| Pin-to-Pin Delay | 7.5 ns - enables reliable timing closure in 125 MHz registered designs with minimal external timing constraints. |
| Operating Voltage | VCCINT = 5.0 V (fixed), VCCIO = 3.3 V or 5.0 V - allows mixed-voltage board interfacing without level shifters. |
| Power Consumption | 10 µA standby (L-version) - reduces quiescent current by >95% vs standard mode, critical for battery-backed or always-on systems. |
| JTAG Compliance | IEEE Std. 1149.1-1990 & 1149.1a-1993 - enables production boundary-scan test, in-circuit debugging, and field firmware updates. |
| I/O Count | Up to 96 bi-directional I/O + 4 dedicated inputs - supports large parallel bus interfaces (e.g., PCI, ISA) and multi-function peripheral control. |
| PCI Compliance | Meets PCI DC/AC drive specs (e.g., VOL ≤ 0.55 V @ 3 mA, IOH ≥ –44 mA) - qualifies as direct replacement for legacy PCI interface logic. |
Pinout & Package
ATF1508ASL-25QC160 is housed in a 160-lead Plastic Quad Flat Package (PQFP) with 0.5 mm pitch, JEDEC MS-026 compliant, RoHS-compliant (Pb/Halide-free). Package dimensions: 28.0 mm × 28.0 mm × 3.3 mm (max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GCLK1–GCLK3 | Global Clock Input | Three dedicated, low-skew clock inputs; each can drive all macrocells - enables multi-clock domain synchronization. |
| GCLR | Global Clear Input | Asynchronous reset for all registers; configurable per macrocell as active-high or active-low via product term OR. |
| OE1 / OE2 | Output Enable Inputs | Two global output enable signals; each can be inverted or routed to individual macrocells for fine-grained I/O control. |
| PD1 / PD2 | Power-down Control | Active-high pins enabling <10 mA standby mode; latches internal state and holds outputs - used for dynamic power gating. |
| TCK / TMS / TDI / TDO | JTAG Test Access Port | Standard 4-pin boundary-scan and ISP interface; TMS/TDI have optional internal pull-ups - eliminates external bias resistors. |
| VCCINT | Core Supply | 5.0 V only; powers input buffers and logic array - must be decoupled independently from VCCIO. |
| VCCIO | I/O Supply | Selectable 3.3 V or 5.0 V; sets output drive voltage and input threshold - enables mixed-voltage system integration. |
| I/Ox | Bi-directional I/O | Configurable as input, output, or bidirectional; supports open-collector option, slew-rate control, and pin-keeper retention. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Pin-keeper | Prevents floating inputs/I/Os without external pull-ups - reduces BOM cost, PCB area, and static power draw. |
| Reduced-power Macrocell Bit | Individually disables unused logic paths per macrocell - cuts dynamic power in partial-utilization designs. |
| Combinatorial Output with Registered Feedback | Enables buried latch creation within single macrocell - supports dual-edge-triggered or transparent-latch functions without extra resources. |
| ITD Circuits on Global Clocks & I/O | Detects signal transitions for wake-up or event capture - eliminates need for external edge-detection logic. |
| VCC Power-up Reset Option | Hysteresis-selectable (Small/Large) reset - ensures deterministic state machine initialization across varying supply ramp profiles. |
Applications
| Industrial PLC I/O Expansion | PCI Bus Interface Logic |
|---|---|
Use Scenario: Adding isolated digital I/O channels to legacy programmable logic controllers using 24 V DC field signals. IC Role / Device Role / Timing Role: Glue logic translating between microcontroller parallel bus and opto-isolated input/output banks; handles strobe decoding, status multiplexing, and interrupt generation. Use Value: Replaces multiple 74-series TTL chips with single reprogrammable device; supports field firmware updates to adapt to new sensor types without hardware change. |
Use Scenario: Implementing address decode, bus arbitration, and configuration space access for add-in PCI cards in embedded computing platforms. IC Role / Device Role / Timing Role: PCI-compliant interface controller managing IDSEL, FRAME#, IRDY#, TRDY#, and DEVSEL# signals with precise setup/hold timing. Use Value: Meets PCI specification VOL/VOH and AC drive requirements without external buffers; reduces layout complexity and improves signal integrity over discrete solutions. |
| Legacy System Re-engineering | Automated Test Equipment (ATE) Pattern Generator |
Use Scenario: Replacing obsolete PAL/GAL devices in aging telecom line cards requiring long-term component availability. IC Role / Device Role / Timing Role: Drop-in functional replacement for 22V10 or 16V8 logic; replicates original Boolean equations with pin-compatible mapping where feasible. Use Value: Eliminates obsolescence risk via reprogrammability; retains original PCB layout while enabling bug fixes and feature enhancements post-deployment. |
Use Scenario: Generating synchronized stimulus waveforms and capturing response data in high-speed digital ATE systems. IC Role / Device Role / Timing Role: High-speed pattern sequencer with deterministic 7.5 ns propagation delay and 125 MHz register clocking - synchronizes with master ATE clock. Use Value: Enables sub-8 ns timing resolution for test vector execution; programmable slew rate minimizes crosstalk during parallel pin testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1508AS-25QC160 | Standard (non-L) version: 160 mA standby current vs. 10 µA; no automatic low-power mode. | Suitable for mains-powered systems where ultra-low standby is unnecessary; higher ICC1 limits battery life. | Select when lowest-cost variant suffices and power budget allows >100× higher quiescent draw. |
| XC95144XL-10TQ144I | Xilinx CoolRunner-II family: 3.3 V only, 5 V tolerant I/O, 10 ns tPD, 144 macrocells, different pinout and JTAG BSDL. | Better suited for new 3.3 V-only designs; lacks PCI drive strength and dual VCC architecture. | Choose for green-field 3.3 V systems requiring longer lifecycle support and lower static power than ATF1508AS(L). |
Compared with ATF1508AS-25QC160, the ATF1508ASL-25QC160 delivers 4 orders-of-magnitude lower standby current at identical speed and density; versus XC95144XL-10TQ144I, it retains 5 V compatibility and native PCI compliance but requires separate VCCINT/VCCIO regulation.
Availability
ATF1508ASL-25QC160 is available at Aetrix Electronics and suitable for industrial control systems, PCI add-in card development, and legacy electronic system modernization requiring stable component supply and long-term manufacturability.
Supply support for ATF1508ASL-25QC160 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 ATF1508AS(L) CPLD family, including datasheets, programming tools, and technical documentation.
The ATF1508AS(L) belongs to Atmel's high-performance EE PLD product line, designed for re-engineering legacy TTL/PLD-based systems, implementing PCI-compliant interface logic, and delivering field-upgradable glue logic in industrial and communications equipment.
FAQ
What is the difference between ATF1508ASL-25QC160 and ATF1508AS-25QC160?
The ATF1508ASL-25QC160 features an "L" (Low-power) version with automatic 10 µA standby current, whereas the ATF1508AS-25QC160 draws ~160 mA in standard standby mode. Both share identical logic density, pinout, speed grade (25 = 7.5 ns), and 160-pin PQFP package. The "L" version adds edge-controlled power-down and enhanced leakage control - critical for battery-operated or thermally constrained applications.
Does ATF1508ASL-25QC160 support both 3.3 V and 5.0 V I/O simultaneously?
No - ATF1508ASL-25QC160 uses dual supplies: VCCINT must be 5.0 V, while VCCIO may be set to either 3.3 V or 5.0 V for the entire device. All I/O pins operate at the same VCCIO voltage level; mixed-voltage I/O per pin is not supported. This architecture simplifies power sequencing but requires board-level voltage domain partitioning.
Can ATF1508ASL-25QC160 be programmed in-system after soldering to the PCB?
Yes - ATF1508ASL-25QC160 supports IEEE 1149.1 JTAG-based In-System Programming (ISP) through its dedicated TCK/TMS/TDI/TDO pins. No socket or UV eraser is needed. Programming can be performed via PC-based download cable, ATE using SVF files, or embedded microcontroller interface - enabling firmware updates and design iterations without board removal.
What does the "25" in ATF1508ASL-25QC160 signify?
The "25" denotes the speed grade: maximum pin-to-pin propagation delay of 7.5 ns under specified conditions (VCC = 5.0 V, TA = 25°C). This corresponds to guaranteed 125 MHz registered operation and defines timing margins for setup/hold analysis. Slower variants (e.g., "15" = 10 ns) exist but are not pin-compatible with the -25 grade due to internal routing differences.
Is JTAG boundary-scan testing supported on ATF1508ASL-25QC160?
Yes - ATF1508ASL-25QC160 fully complies with IEEE Std. 1149.1-1990 and 1149.1a-1993 for boundary-scan testing. Every I/O and input pin includes a dedicated boundary-scan cell (BSC); BSDL models are available from Microchip. JTAG supports SAMPLE/PRELOAD, EXTEST, BYPASS, and IDCODE instructions - enabling automated PCB test and interconnect verification.
ATF1508ASL-25QC160 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 160-BQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- In System Programmable (min 10K program/erase cycles)
- Delay Time tpd(1) Max:
- 25 ns
- Voltage Supply - Internal:
- 4.75V ~ 5.25V
- Number of Logic Elements/Blocks:
- -
- Number of Macrocells:
- 128
- Number of Gates:
- -
- Number of I/O:
- 96
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 160-PQFP (28x28)
ATF1508ASL-25QC160 FAQ
1.How can I place an order for ATF1508ASL-25QC160 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1508ASL-25QC160 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 ATF1508ASL-25QC160 reliable?
The price and inventory of ATF1508ASL-25QC160 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1508ASL-25QC160 is usually 5 days.
3.What payment methods are accepted for ATF1508ASL-25QC160?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1508ASL-25QC160 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1508ASL-25QC160?
ATF1508ASL-25QC160 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1508ASL-25QC160 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 ATF1508ASL-25QC160?
For technical support, including ATF1508ASL-25QC160 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1508ASL-25QC160 requirements.
6.How does Aetrix verify that ATF1508ASL-25QC160 is sourced from the original manufacturer or authorized distributors?
All ATF1508ASL-25QC160 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 ATF1508ASL-25QC160 meets industry standards.
7.What is the process for return or replacement of ATF1508ASL-25QC160?
All ATF1508ASL-25QC160 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1508ASL-25QC160, 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 ATF1508ASL-25QC160 part is unused and in its original packaging.
Return procedure for ATF1508ASL-25QC160:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1508ASL-25QC160 Tags
-
5M40ZE64C5N
Intel
-
ATF1502ASV-15AU44
Microchip Technology
-
5M80ZE64C5N
Intel
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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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