My Inquiry
My Account
Microchip Technology ATF1500A-12JI
- Part No.:
- ATF1500A-12JI
- Manufacturer:
- Microchip Technology
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
ATF1500A-12JI.pdf
- Description:
- IC CPLD 32MC 12NS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,126
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ATF1500A-12JI from Atmel is a high-density, electrically-erasable Complex Programmable Logic Device (CPLD) with 32 logic macrocells, 36 global inputs, and 32 I/O pins in a 44-lead TQFP package. It delivers 7.5 ns maximum pin-to-pin delay, supports registered operation up to 62.5 MHz, and operates across -40°C to +85°C industrial temperature range. It integrates legacy TTL/SSI/MSI logic in embedded control, interface bridging, and system glue logic applications.
For engineers reviewing the ATF1500A-12JI datasheet, ATF1500A-12JI pinout, ATF1500A-12JI application, or ATF1500A-12JI equivalent, key selection considerations include its 5 V supply compatibility, programmable slew rate per I/O, pin-controlled power-down mode (<10 mA), pin-keeper circuitry for floating-input immunity, and Flash-based reprogrammability with 100 program/erase cycles.
Technical Context
The ATF1500A-12JI implements a fully connected global bus architecture feeding all 32 macrocells with 68-bit signal availability (36 inputs + 32 feedbacks + complements), enabling flexible logic placement without pinout changes. Its macrocell structure includes five product terms, OR/XOR/cascade logic, D/T/latch-configurable flip-flops, and individual output enable/slew control.
It features dual feedback paths-global bus for full interconnectivity and regional bus for localized 16-macrocell cascading-and supports both pin-driven (CLK, GCLR, OE1/OE2) and product-term clocking with distinct AC timing profiles. The device uses advanced Flash technology for 20-year data retention, 2000 V ESD protection, and security fuse locking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 32 macrocells, 36 global inputs - supports integration of multiple SSI/MSI functions in single device |
| Max Pin-to-Pin Delay | 7.5 ns - enables high-speed combinatorial path timing in real-time control loops |
| Max Registered Speed | 62.5 MHz - determined by tPS = 12 ns clock period for industrial-grade -12 speed bin |
| Supply Voltage | 5 V ±10% - compatible with legacy 5 V logic systems and mixed-voltage board designs |
| Operating Temperature | -40°C to +85°C - qualified for industrial automation, motor control, and telecom infrastructure |
| Power-Down Current | <10 mA - reduces standby power in battery-backed or energy-sensitive subsystems |
| I/O Slew Control | Per-pin programmable slow/fast - mitigates EMI on non-critical signals while preserving timing on critical paths |
Pinout & Package
ATF1500A-12JI is housed in a 44-lead Thin Quad Flatpack (TQFP), 10 mm × 10 mm body, 0.8 mm lead pitch, JEDEC MS-026 ACB-compliant package. Pin 1 identifier is marked by a corner chamfer or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK | Global clock input | Primary synchronous edge-trigger source for all macrocells; rising-edge sensitive |
| GCLR | Active-low global reset | Asynchronously clears all registers; may be OR'd with product-term reset for selective control |
| OE1, OE2 | Active-low output enables | Individually assigned per macrocell to control tri-state behavior of I/O buffers |
| PD | Power-down control | When high and enabled in design file, forces device into <10 mA standby; disables all inputs except PD |
| VCC | +5 V supply | Single 5 V rail powers core and I/O; two dedicated VCC pins ensure low-impedance distribution |
| GND | Ground reference | Three GND pins provide return paths for logic and I/O currents; reduce ground bounce in high-speed switching |
| I/O | Bi-directional buffer | All 32 I/O pins support input, output, or bidirectional modes; each includes pin-keeper and slew control |
Key Features
| Feature | Design Value |
|---|---|
| Programmable pin-keeper | Prevents floating I/Os from drifting to indeterminate voltage, eliminating need for external pull-ups and reducing system noise |
| Per-I/O slew rate control | Slows non-critical outputs to suppress EMI without affecting timing-critical paths; defaults to slow switching |
| Flash-based reprogrammability | 100 program/erase cycles with 20-year data retention enables field updates and design iteration without hardware change |
| Security fuse | One-time programmable fuse blocks unauthorized readback of JEDEC fuse pattern while preserving user signature access |
| Backward software compatibility | Fully supported by ATF1500/L design tools - eliminates toolchain migration cost for legacy PLD upgrades |
Applications
| Industrial Motor Control | Legacy System Interface Bridging |
|---|---|
Use Scenario: Real-time sequencing of stepper motor phases and limit switch monitoring in PLC-connected drives. IC Role / Device Role / Timing Role: Glue logic CPLD implementing state machines, debounce logic, and parallel-to-serial conversion with deterministic 7.5 ns combinatorial delay. Use Value: Replaces discrete 74-series logic and eliminates PCB routing congestion while maintaining industrial temp rating and 5 V compatibility. | Use Scenario: Adapting legacy ISA-bus peripherals to modern microcontroller buses in test equipment. IC Role / Device Role / Timing Role: Protocol translator and address decoder handling asynchronous strobes, chip selects, and handshaking signals. Use Value: Integrates multiple decoder ICs and latch logic into one reprogrammable device, simplifying BOM and enabling firmware-driven interface updates. |
| Telecom Line Card Control | Automated Test Equipment (ATE) |
Use Scenario: Managing LED status indicators, relay drivers, and fault-sensing inputs on carrier-grade line cards. IC Role / Device Role / Timing Role: Configurable I/O expander with register-controlled outputs and pin-keeper stability for unconnected test points. Use Value: Provides robust 5 V-tolerant I/O with automatic floating-input suppression, reducing susceptibility to ESD-induced resets in dense backplane environments. | Use Scenario: Generating precise stimulus patterns and capturing response signatures during IC functional testing. IC Role / Device Role / Timing Role: High-speed pattern generator using registered outputs synchronized to 62.5 MHz clock with sub-12 ns setup/hold margins. Use Value: Delivers deterministic timing via internal feedback paths and supports preload vectors for repeatable test vector initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATF1502AS-10JI | Pin-compatible upgrade with higher density (44 macrocells), faster speed (10 ns tPD), and same 44J/TQFP packaging | Supports larger logic functions without layout change; requires updated design files due to expanded resource map | Select when expanding logic capacity or requiring >62.5 MHz registered performance in existing footprint |
| XC9536XL-10VQ44I | Xilinx CoolRunner-II device; 36 macrocells, 5 V tolerant I/O, 10 ns tPD, but uses different programming algorithm and toolchain | Lacks pin-keeper and global bus architecture; requires redesign for equivalent logic partitioning and timing closure | Choose for long-term availability assurance and lower static current (10 µA vs 100 mA), accepting toolchain and design migration effort |
Compared with ATF1500A-12JI, ATF1502AS-10JI offers higher density and speed in identical packaging, while XC9536XL-10VQ44I provides superior low-power operation and extended lifecycle but demands full design re-implementation and toolchain transition.
Availability
ATF1500A-12JI is available at Aetrix Electronics and suitable for industrial motor control, telecom line card management, legacy interface bridging, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ATF1500A-12JI 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) designed high-reliability non-volatile programmable logic and microcontroller solutions for industrial, automotive, and communications markets.
The ATF1500A family was engineered as Flash-based CPLDs targeting replacement of TTL/SSI/MSI logic and classic PLDs in 5 V systems requiring reprogrammability, industrial temperature operation, and pin-keeper stability.
FAQ
What is the operating voltage range for the ATF1500A-12JI?
The ATF1500A-12JI operates from 5 V ±10%, i.e., 4.5 V to 5.5 V, as specified in its DC operating conditions for industrial temperature range. This ensures compatibility with standard 5 V logic families and avoids level-shifting requirements in legacy system designs. The ATF1500A-12JI does not support 3.3 V or mixed-voltage I/O operation.
Does the ATF1500A-12JI support in-system programming?
Yes, the ATF1500A-12JI supports in-system programming via JTAG (IEEE 1149.1) boundary-scan interface. Programming requires a 12 V VPP pulse applied to the VPP pin during configuration, and JEDEC files generated by Atmel's design tools. The ATF1500A-12JI retains its programmed logic through power cycles due to Flash non-volatility.
How does the pin-keeper feature function on the ATF1500A-12JI?
The pin-keeper circuit on each I/O of the ATF1500A-12JI actively holds the last driven logic state (high or low) when the pin becomes floating, preventing intermediate voltages that cause shoot-through current and noise. It is enabled per-pin in the design file and remains active during power-down mode, making it especially valuable for unconnected test points or unused I/Os in industrial environments.
What is the purpose of the PD pin on the ATF1500A-12JI?
The PD (Power-Down) pin on the ATF1500A-12JI serves as an external control input to activate low-power standby mode when asserted high - reducing supply current to under 10 mA. When enabled in the design file, the PD pin overrides all other inputs except itself; internal states and output levels are latched, and the device resumes normal operation within 1 µs after PD goes low. The ATF1500A-12JI's PD pin cannot serve as a general-purpose logic input when power-down is active.
Can the ATF1500A-12JI replace older ATF1500 series devices without board changes?
Yes, the ATF1500A-12JI is pin-compatible with earlier ATF1500 and ATF1500L devices in the same 44-lead TQFP (44A) or PLCC (44J) packages. It maintains identical pinout, voltage levels, and timing architecture, and supports backward-compatible design files and programming tools - enabling drop-in replacement for reliability upgrades or obsolescence mitigation without PCB revision.
ATF1500A-12JI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- ATF15xx
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- In System Programmable (min 100 program/erase cycles)
- Delay Time tpd(1) Max:
- 12 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-PLCC (16.6x16.6)
ATF1500A-12JI FAQ
1.How can I place an order for ATF1500A-12JI through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF1500A-12JI 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-12JI reliable?
The price and inventory of ATF1500A-12JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF1500A-12JI is usually 5 days.
3.What payment methods are accepted for ATF1500A-12JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF1500A-12JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF1500A-12JI?
ATF1500A-12JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF1500A-12JI 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-12JI?
For technical support, including ATF1500A-12JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF1500A-12JI requirements.
6.How does Aetrix verify that ATF1500A-12JI is sourced from the original manufacturer or authorized distributors?
All ATF1500A-12JI 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-12JI meets industry standards.
7.What is the process for return or replacement of ATF1500A-12JI?
All ATF1500A-12JI units undergo pre-shipment inspection (PSI). If there is an issue with ATF1500A-12JI, 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-12JI part is unused and in its original packaging.
Return procedure for ATF1500A-12JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF1500A-12JI 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
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
