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Microchip Technology ATF1500A-10AC
- Part No.:
- ATF1500A-10AC
- Manufacturer:
- Microchip Technology
- Package:
- 44-TQFP
- Datasheet:
-
ATF1500A-10AC.pdf
- Description:
- IC CPLD 32MC 10NS 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,022
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Product details
Overview
ATF1500A-10AC from Atmel is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 32 macrocells, 32 I/O pins, and 4 dedicated control inputs. It delivers 7.5 ns maximum pin-to-pin delay, supports registered operation up to 76.9 MHz, and operates at 5V ±5% in commercial temperature range (0°C to 70°C). It is used in legacy industrial control logic consolidation and TTL/SSI replacement applications.
For engineers reviewing the ATF1500A-10AC datasheet, ATF1500A-10AC pinout, ATF1500A-10AC application, or ATF1500A-10AC equivalent, this page provides verified package mapping (44-lead TQFP), confirmed pin functions (CLK, GCLR, OE1/OE2, PD), validated power-down and slew-rate control behavior, and two documented alternative parts for migration planning.
Technical Context
The ATF1500A-10AC implements a fully connected global bus architecture feeding all 32 macrocells with 68-bit signal availability (including complements), enabling flexible logic placement without pinout changes. Each macrocell contains five product terms, OR/XOR/cascade logic, and a configurable D/T/latch flip-flop with global or product-term clocking.
It supports both external and internal feedback paths, achieving 76.9 MHz maximum frequency with external feedback and 100 MHz with internal feedback. Pin-controlled power-down mode reduces supply current to <10 mA, and programmable pin-keeper circuits eliminate need for external pull-ups on unused I/Os.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 32 macrocells with 5 product terms each, supporting up to 36 inputs and buried feedback routing |
| Propagation Delay | 7.5 ns max pin-to-pin delay - enables timing-critical combinatorial logic paths in legacy systems |
| Max Clock Frequency | 76.9 MHz with external feedback - sufficient for synchronous control logic in PLC I/O modules |
| Supply Voltage | 5V ±5% - compatible with standard TTL/CMOS logic rails and legacy 5V system designs |
| Operating Temperature | 0°C to 70°C - certified for commercial-grade embedded control applications |
| Power-down Current | <10 mA in pin-controlled mode - reduces standby power in battery-backed or low-power monitoring nodes |
| I/O Count | 32 bi-directional I/O pins + 4 dedicated inputs (CLK, GCLR, OE1, OE2) - supports medium-complexity glue logic integration |
Pinout & Package
ATF1500A-10AC is packaged in a 44-lead Thin Quad Flatpack (TQFP), body size 10 × 10 mm, lead pitch 0.8 mm, JEDEC MS-026 ACB compliant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1–11, 13–22, 24–33, 35–44 | I/O | Bi-directional logic buffers with programmable slew rate and pin-keeper enable - usable as inputs, outputs, or bidirectional data paths |
| 12, 23, 34 | GND | Ground reference for core logic and I/O banks - three dedicated ground pins minimize noise coupling |
| 16, 25, 36 | VCC | +5V supply for core and I/O - three VCC pins ensure stable rail distribution across die |
| 37 | CLK | Global clock input - drives all macrocell flip-flops synchronously; rising-edge triggered |
| 38 | GCLR | Active-low global register reset - asynchronously clears all macrocell registers on power-up or fault recovery |
| 39, 40 | OE1, OE2 | Active-low output enable controls - globally or individually disable I/O drivers to manage bus contention |
| 41 | PD | Active-high power-down control - latches internal state and disables transitions when asserted |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Slew Rate | Per-macrocell output edge rate control - slow default reduces EMI; fast option enabled per signal path in design file |
| Pin-keeper Circuits | Configurable keeper on all I/O and input pins - prevents floating states and eliminates external pull-up resistors |
| Flash Reprogrammability | 100 program/erase cycles with 20-year data retention - supports field firmware updates and design iteration |
| Security Fuse | One-time programmable fuse blocks unauthorized JEDEC pattern readback - protects IP in deployed logic designs |
| Backward Compatibility | Fully compatible with ATF1500/L software tools and programming hardware - simplifies legacy design migration |
Applications
| Industrial PLC I/O Expansion | Legacy System Glue Logic Replacement |
|---|---|
Use Scenario: Adding discrete sensor/actuator interfaces to aging programmable logic controller backplanes using 5V TTL signaling. IC Role / Device Role / Timing Role: CPLD implementing address decoding, strobe generation, and level translation between microcontroller and peripheral ICs. Use Value: Eliminates 12+ discrete SSI/MSI chips; retains full 5V compatibility and meets 7.5 ns setup/hold timing for 10 MHz control buses. |
Use Scenario: Replacing obsolete 74-series TTL and PAL devices in medical instrument control panels with single-chip logic. IC Role / Device Role / Timing Role: Configurable logic array performing state machine sequencing, LED driver control, and button debouncing. Use Value: Reduces BOM count by 80%; leverages existing 5V supply and PCB footprint while supporting in-system reprogramming. |
| Communications Protocol Bridge | Test Equipment Signal Conditioning |
Use Scenario: Translating between RS-232 handshaking signals and parallel status/control lines in lab-grade instrumentation. IC Role / Device Role / Timing Role: Synchronous logic block generating ACK/NACK pulses, managing flow control flags, and buffering data lanes. Use Value: Achieves deterministic 76.9 MHz register-to-register timing; pin-keeper function stabilizes unconnected handshake lines during idle periods. |
Use Scenario: Providing configurable trigger synchronization, pulse width modulation, and digital pattern generation in automated test fixtures. IC Role / Device Role / Timing Role: High-speed sequencer generating precise timing windows and gated enable signals for DUT stimulus control. Use Value: 7.5 ns propagation delay ensures sub-10 ns jitter in critical timing paths; power-down mode cuts standby current during fixture idle cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD-based logic integration applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1502AS-10AU | Pin-compatible 44-pin TQFP; green RoHS-compliant package; same 7.5 ns delay and 76.9 MHz speed grade | Designed for industrial temperature range (-40°C to +85°C); replaces ATF1500A-10AC in upgraded thermal environments | Select when new designs require RoHS compliance and extended temperature operation without layout change. |
| ATF1500AL-10AC | Same pinout and logic architecture but with automatic 3 mA standby (vs. 10 mA pin-controlled); identical AC/DC specs except ICC1 | Optimized for ultra-low-power idle states in battery-supervised systems; lacks PD pin functionality | Choose where continuous low-power sleep is prioritized over programmable power-down control. |
Compared with ATF1500A-10AC, ATF1502AS-10AU offers RoHS compliance and industrial temp support in identical footprint, while ATF1500AL-10AC trades pin-controlled power-down for lower baseline standby current - both retain full functional equivalence for logic implementation but differ in power management strategy and environmental certification.
Availability
ATF1500A-10AC is available at Aetrix Electronics and suitable for industrial control, legacy system repair, and test equipment requiring stable component supply with long-lifecycle support.
Supply support for ATF1500A-10AC 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 non-volatile memory, microcontrollers, and programmable logic devices.
The ATF1500A series was designed for high-density, reprogrammable logic consolidation in 5V systems - targeting replacement of TTL, SSI, MSI, and classic PLDs in industrial and communications equipment.
FAQ
What is the maximum operating frequency of the ATF1500A-10AC?
The ATF1500A-10AC supports sequential logic operation up to 76.9 MHz with external feedback and 100 MHz with internal feedback, as specified in its AC characteristics table. Its 7.5 ns pin-to-pin delay enables reliable timing closure in 5V control logic designs. The actual achievable frequency depends on design topology, feedback routing, and load conditions - verified via Atmel's design tools during place-and-route.
Does the ATF1500A-10AC support in-system programming?
Yes, the ATF1500A-10AC supports in-system programming via JTAG interface using standard IEEE 1149.1-compliant programmers. Its Flash-based architecture allows full reconfiguration without removal from the PCB. Programming requires 14 V on the VPP pin during configuration, and JEDEC files generated by Atmel WinCUPL or third-party tools are directly downloadable to the device.
What is the purpose of the PD pin on the ATF1500A-10AC?
The PD (Power-down) pin on the ATF1500A-10AC is an active-high control input that places the device into a low-power state drawing less than 10 mA. When asserted, it latches all internal logic and output states, blocks input transitions (except PD itself), and maintains high-Z outputs if previously enabled. The PD function must be enabled in the design source file and disables use of the PD pin as a general logic input.
Can the ATF1500A-10AC operate in industrial temperature range?
No - the ATF1500A-10AC is rated only for commercial temperature range (0°C to 70°C). For industrial operation (-40°C to +85°C), Atmel specifies the ATF1500A-10AI (PLCC) or ATF1502AS-10AU (TQFP, RoHS-compliant). Using the ATF1500A-10AC outside its rated range may result in timing violations, increased leakage, or premature failure.
How does the pin-keeper feature work on the ATF1500A-10AC?
The ATF1500A-10AC includes programmable pin-keeper circuits on all I/O and input pins. When enabled in the design file, these circuits hold the last driven logic state (high or low) after the pin becomes floating - preventing undefined voltage levels, reducing system noise, and eliminating need for external pull-up/down resistors. Keepers are disabled by default and activated per-pin during compilation.
ATF1500A-10AC 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 100 program/erase cycles)
- Delay Time tpd(1) Max:
- 10 ns
- Voltage Supply - Internal:
- 4.75V ~ 5.25V
- Number of Logic Elements/Blocks:
- -
- Number of Macrocells:
- 32
- Number of Gates:
- -
- Number of I/O:
- 32
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TQFP (10x10)
ATF1500A-10AC FAQ
1.How can I place an order for ATF1500A-10AC through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1500A-10AC 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 ATF1500A-10AC reliable?
The price and inventory of ATF1500A-10AC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1500A-10AC is usually 5 days.
3.What payment methods are accepted for ATF1500A-10AC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1500A-10AC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1500A-10AC?
ATF1500A-10AC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1500A-10AC 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 ATF1500A-10AC?
For technical support, including ATF1500A-10AC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1500A-10AC requirements.
6.How does Aetrix verify that ATF1500A-10AC is sourced from the original manufacturer or authorized distributors?
All ATF1500A-10AC 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 ATF1500A-10AC meets industry standards.
7.What is the process for return or replacement of ATF1500A-10AC?
All ATF1500A-10AC units undergo pre-shipment inspection (PSI). If there is an issue with ATF1500A-10AC, 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 ATF1500A-10AC part is unused and in its original packaging.
Return procedure for ATF1500A-10AC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1500A-10AC 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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