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Microchip Technology ATF1502AS-15AI44
- Part No.:
- ATF1502AS-15AI44
- Manufacturer:
- Microchip Technology
- Package:
- 44-TQFP
- Datasheet:
-
ATF1502AS-15AI44.pdf
- Description:
- IC CPLD 32MC 15NS 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,790
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Product details
Overview
ATF1502AS-15AI44 from Atmel is a high-performance, electrically-erasable Complex Programmable Logic Device (CPLD) with 32 macrocells, 5 product terms per macrocell (expandable to 40), 44-pin TQFP package, 7.5 ns maximum pin-to-pin delay, and registered operation up to 125 MHz. It integrates legacy TTL/SSI/MSI logic and supports PCI-compliant 5V I/O in industrial temperature range (–40°C to +85°C).
For engineers reviewing the ATF1502AS-15AI44 datasheet, ATF1502AS-15AI44 pinout, ATF1502AS-15AI44 application, or ATF1502AS-15AI44 equivalent, key selection considerations include JTAG ISP capability, programmable slew rate and open-collector outputs, global clock routing with ITD circuits, power-down mode via PD1/PD2 pins, and security fuse protection for design IP.
Technical Context
The ATF1502AS-15AI44 implements a flexible macrocell architecture with five functional sections: product term array with PTMUX, OR/XOR/CASCADE logic, D/T-latch-configurable flip-flop, output select/enable, and logic array inputs. Each macrocell supports buried combinatorial or registered feedback independent of output mode.
Its global bus carries all 32 macrocell feedbacks plus all I/O and dedicated input signals; each logic block's switch matrix selects up to 40 signals from this bus. Four regional foldback buses enable high-fan-in sum-term generation (up to 9 product terms per region) with minimal delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Macrocells | 32 - provides gate count equivalent to ~1000 usable PLD gates with full interconnect flexibility |
| Product Terms | 5 per macrocell, expandable to 40 via cascade - enables complex Boolean functions without external glue logic |
| Max Pin-to-pin Delay | 7.5 ns - guarantees timing closure for 125 MHz registered operation in critical paths |
| Global Clock Pins | 3 (GCLK1–GCLK3) - supports multi-domain synchronous design with independent clock domains |
| PCI Compliance | Fully compliant with PCI 2.2 electrical specs - delivers ±44 mA AC drive and <0.55 V VOL at 3 mA for direct bus interfacing |
| Power-down Mode | Pin-controlled (PD1/PD2) - reduces ICC to <1 mA while latching all internal states and outputs |
| Security Fuse | Single-programmable fuse - prevents unauthorized readback of configuration bitstream while preserving 16-bit User Signature access |
Pinout & Package
ATF1502AS-15AI44 is housed in a 44-lead Thin Quad Flat Package (TQFP) with 0.8 mm lead pitch, JEDEC MO-153 compliant, and rated for industrial temperature range (–40°C to +85°C). Thermal resistance θJA = 45°C/W typical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43 | I/O or dedicated input | Bi-directional logic I/O with programmable slew rate, open-collector option, and pin-keeper circuitry; dedicated pins serve as GCLR, OE1, GCLK1–3, PD1, PD2 |
| 44 | TDI/I/O | JTAG Test Data Input - used for ISP programming and boundary-scan testing; retains macrocell functionality when JTAG disabled |
| 3, 6, 11, 22 | TDO/I/O, TMS/I/O, TCK/I/O, TDI/I/O | JTAG interface pins - support IEEE 1149.1 boundary-scan and in-system programming; pull-up option available on TMS/TDI |
| 20, 27, 35 | GCLK1/I, GCLK2/OE2/I, GCLK3/I/O | Global clock inputs - drive all macrocell clocks; GCLK2 doubles as output enable; GCLK3 supports input transition detection (ITD) |
| 17 | GCLR/I | Global asynchronous clear - resets all registers synchronously or asynchronously depending on macrocell configuration |
| 16 | OE1/I | Output enable control - globally enables/disables outputs; configurable per-macrocell via product terms |
| 5, 32 | PD1/I/O, PD2/I/O | Power-down control - asserts low-power mode (<1 mA ICC) when driven high; disables logic but preserves output states |
Key Features
| Feature | Design Value |
|---|---|
| In-System Programmability (ISP) | IEEE 1149.1 JTAG interface enables field reprogramming without device removal - eliminates production rework and supports late-stage design iterations |
| Programmable Slew Rate | Per-output control reduces EMI and signal integrity issues on high-speed traces - slow default avoids overshoot/ringing on unterminated lines |
| Input Transition Detection (ITD) | Hardware edge-detection on GCLKs, inputs, and I/Os - enables low-power wake-on-event without CPU polling or external interrupt logic |
| Reduced-Power Macrocell Bit | Individual macrocell power gating cuts dynamic current by >50% - extends battery life in portable industrial controllers |
| VCC Power-up Reset | Hysteresis-configurable reset ensures deterministic state machine initialization - Large hysteresis option reduces ICC by hundreds of µA |
| Pin-keeper Circuits | Eliminates need for external pull-ups on unused I/Os - prevents floating inputs, reduces board area, and removes DC leakage path |
Applications
| Industrial PLC I/O Expansion | Legacy System Emulation |
|---|---|
Use Scenario: Replacing obsolete 74-series TTL and PAL devices in programmable logic controller backplanes with single-chip logic consolidation. IC Role / Device Role / Timing Role: CPLD acts as glue logic hub - decoding address/data buses, generating strobes, managing handshake signals, and driving relay drivers. Use Value: Reduces BOM count by >80%, eliminates timing skew between discrete logic families, and enables firmware-upgradable control logic without hardware change. | Use Scenario: Emulating vintage microprocessor support chips (e.g., Intel 8255, Zilog Z80 PIO) in retro-computing restoration projects. IC Role / Device Role / Timing Role: Configurable logic engine replicating exact register maps, timing waveforms, and bus contention behavior of original ICs. Use Value: Preserves authentic system timing (tPD ≤ 7.5 ns matches 8255-5 spec), supports 5V TTL levels natively, and allows behavioral tweaks via reprogramming. |
| PCI Bus Interface Adapter | Automated Test Equipment (ATE) Pattern Generator |
Use Scenario: Implementing custom PCI target interfaces in test instrumentation requiring direct 33 MHz bus mastering and compliance verification. IC Role / Device Role / Timing Role: PCI-compliant I/O buffer and protocol state machine - handles IDSEL decoding, parity generation, and transaction arbitration. Use Value: Meets PCI 2.2 DC/AC specs (VOL ≤ 0.55 V @ 3 mA, IOH ≥ –44 mA), delivers <1 ns output skew, and avoids FPGA-level complexity and cost. | Use Scenario: Generating synchronized stimulus patterns for mixed-signal IC validation, where precise timing alignment across 32+ channels is required. IC Role / Device Role / Timing Role: High-speed pattern sequencer with deterministic 125 MHz registered outputs and sub-ns jitter on global clocks. Use Value: Achieves 7.5 ns pin-to-pin delay stability across temperature, supports programmable slew control to match DUT loading, and enables real-time pattern updates via JTAG. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCR3064XL-10VQ44C | 64 macrocells, 3.3V core, 10 ns tPD, Xilinx CoolRunner-II architecture with advanced low-power modes | Requires level-shifting for 5V PCI bus; lacks native 5V-tolerant I/O and ITD circuits | Select when lower static power (<10 µA standby) and 3.3V system integration are prioritized over 5V compatibility |
| ISPLSI2064VE-100LT44 | 64 macrocells, 3.3V supply, 100 MHz fMAX, Lattice ispLSI architecture with embedded RAM blocks | No PCI compliance; no pin-controlled power-down; requires external pull-ups for unused I/Os | Choose for designs needing embedded memory or higher logic density, accepting trade-offs in 5V I/O and power management granularity |
Compared with XCR3064XL-10VQ44C and ISPLSI2064VE-100LT44, the ATF1502AS-15AI44 uniquely combines native 5V PCI compliance, industrial-grade temperature support, pin-keeper circuitry eliminating external resistors, and hardware ITD for event-driven low-power operation - making it optimal for retrofitting legacy 5V systems and ruggedized industrial control.
Availability
ATF1502AS-15AI44 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy system emulation, and PCI bus interface adapter applications requiring stable component supply, long lifecycle support, and guaranteed industrial temperature performance.
Supply support for ATF1502AS-15AI44 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 for industrial, automotive, and communications markets.
The ATF1502AS family was designed as a high-density, 5V-compatible CPLD platform targeting replacement of TTL/PLD glue logic in industrial control, telecom infrastructure, and PCI-based systems - emphasizing in-system programmability, robust ESD/latch-up immunity, and seamless 5V system integration.
FAQ
What is the maximum operating frequency of the ATF1502AS-15AI44?
The ATF1502AS-15AI44 supports registered operation up to 125 MHz under industrial conditions (–40°C to +85°C) with 5V supply. Its maximum clock frequency is 166.7 MHz in commercial grade, but the -15 speed grade guarantees 125 MHz timing closure with 7.5 ns pin-to-pin delay. The actual achievable frequency depends on logic depth and routing; fCNT = 125 MHz is specified for global clock paths with full macrocell utilization in the ATF1502AS-15AI44.
Does the ATF1502AS-15AI44 support JTAG boundary-scan testing?
Yes, the ATF1502AS-15AI44 fully supports IEEE Std. 1149.1-1990 and 1149.1a-1993 boundary-scan testing. Every I/O and input pin includes a dedicated boundary-scan cell (BSC), and the device implements all five standard JTAG modes: SAMPLE/PRELOAD, EXTEST, BYPASS, IDCODE, and HIGHZ. The TAP controller resets automatically at power-up, eliminating need for TRST pin - a feature confirmed in the ATF1502AS-15AI44 datasheet revision 0995J.
Can the ATF1502AS-15AI44 be used in PCI-compliant designs?
Yes, the ATF1502AS-15AI44 is explicitly PCI-compliant per PCI Local Bus Specification 2.2. It meets all required DC characteristics including VOH ≥ 2.4 V at –2 mA, VOL ≤ 0.55 V at 3 mA, and AC drive capability of –44 mA (high-side) and +95 mA (low-side) with controlled slew rates. These specifications are validated for the ATF1502AS-15AI44 in its 44-lead TQFP package under industrial temperature conditions.
What power management features does the ATF1502AS-15AI44 offer?
The ATF1502AS-15AI44 offers three layered power management features: automatic 10 µA standby (not applicable to "AS" version - only "ASL"), pin-controlled power-down mode (<1 mA ICC via PD1/PD2), and per-macrocell reduced-power bit. In power-down mode, all outputs and internal states are latched; during reduced-power mode, tRPA adder (10–15 ns) applies to timing paths. These features are documented for the ATF1502AS-15AI44 in the "Speed/Power Management" section of its datasheet.
How many product terms are available per macrocell in the ATF1502AS-15AI44?
The ATF1502AS-15AI44 provides 5 base product terms per macrocell, expandable up to 40 via cascade logic from neighboring macrocells in the same logic block. This expansion is implemented in hardware with negligible additional delay (tPEXP = 0.8–2 ns), enabling high-fan-in sum-of-products without performance penalty. The compiler automatically allocates product terms using the PTMUX, and this capability is confirmed for the ATF1502AS-15AI44 in its macrocell architecture description.
ATF1502AS-15AI44 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 44-TQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- In System Programmable (min 10K program/erase cycles)
- Delay Time tpd(1) Max:
- 15 ns
- Voltage Supply - Internal:
- 4.5V ~ 5.5V
- Number of Logic Elements/Blocks:
- -
- Number of Macrocells:
- 32
- Number of Gates:
- -
- Number of I/O:
- 32
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TQFP (10x10)
ATF1502AS-15AI44 FAQ
1.How can I place an order for ATF1502AS-15AI44 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1502AS-15AI44 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 ATF1502AS-15AI44 reliable?
The price and inventory of ATF1502AS-15AI44 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1502AS-15AI44 is usually 5 days.
3.What payment methods are accepted for ATF1502AS-15AI44?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1502AS-15AI44 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1502AS-15AI44?
ATF1502AS-15AI44 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1502AS-15AI44 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 ATF1502AS-15AI44?
For technical support, including ATF1502AS-15AI44 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1502AS-15AI44 requirements.
6.How does Aetrix verify that ATF1502AS-15AI44 is sourced from the original manufacturer or authorized distributors?
All ATF1502AS-15AI44 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 ATF1502AS-15AI44 meets industry standards.
7.What is the process for return or replacement of ATF1502AS-15AI44?
All ATF1502AS-15AI44 units undergo pre-shipment inspection (PSI). If there is an issue with ATF1502AS-15AI44, 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 ATF1502AS-15AI44 part is unused and in its original packaging.
Return procedure for ATF1502AS-15AI44:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1502AS-15AI44 Tags
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5M40ZE64C5N
Intel
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ATF1502ASV-15AU44
Microchip Technology
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5M80ZE64C5N
Intel
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5M80ZT100C5N
Intel
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ATF1502AS-10AU44
Microchip Technology
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ATF1502AS-10JU44
Microchip Technology
-
5M80ZE64I5N
Intel
-
5M80ZT100I5N
Intel
-
LC4032V-75TN48C
Lattice Semiconductor Corporation
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ATF1504ASV-15AU44
Microchip Technology
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ATF1504AS-10JU44
Microchip Technology
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5M160ZE64C5N
Intel
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