MICROCHIP ATF1508AS-10AU100

The ATF1508AS is a high-performance, high-density complex programmable logic device (CPLD) that utilizes Atmel’s proven electrically-erasable technology. With 128 logic macrocells and up to 100 inputs, it easily integrates logic from several TTL, SSI, MSI, LSI and classic PLDs. The ATF1508AS’s enhanced routing switch matrices increase usable gate count and increase odds of successful pin-locked design modifications. The ATF1508AS has up to 96 bi-directional I/O pins and four dedicated input pins, depending on the type of device package selected. Each dedicated pin can also serve as a global control signal, register clock, register reset or output enable. Each of these control signals can be selected for use individually within each macrocell. Each of the 128 macrocells generates a buried feedback that goes to the global bus. Each input and I/O pin also feeds into the global bus. The switch matrix in each logic block then selects 40 individual signals from the global bus. Each macrocell also generates a foldback logic term that goes to a regional bus. Cascade logic between macrocells in the ATF1508AS allows fast, efficient generation of complex logic functions. The ATF1508AS contains eight such logic chains, each capable of creating sum term logic with a fan-in of up to 40 product terms. Unused macrocells are automatically disabled by the compiler to decrease power consumption. A security fuse, when programmed, protects the contents of the ATF1508AS. Two bytes (16 bits) of User Signature are accessible to the user for purposes such as storing project name, part number, revision or date. The User Signature is accessible regardless of the state of the security fuse. The ATF1508AS device is an in-system programmable (ISP) device. It uses the industry-standard 4-pin JTAG interface (IEEE Std. 1149.1), and is fully compliant with JTAG’s Boundaryscan Description Language (BSDL). ISP allows the device to be programmed without removing it from the printed circuit board. In addition to simplifying the manufacturing flow, ISP also allows design modifications to be made in the field via software.

• High-density, High-performance, Electrically-erasable Complex Programmable Logic Device
• 128 Macrocells
• 5 Product Terms per Macrocell, Expandable up to 40 per Macrocell
• 84, 100, 160 Pins
• 7.5 ns Maximum Pin-to-pin Delay
• Registered Operation up to 125 MHz
• Enhanced Routing Resources
• D/T/Latch Configured Flip-flops
• Global and Individual Register Control Signals
• Global and Individual Output Enable
• Programmable Output Slew Rate
• Programmable Output Open Collector Option
• Maximum Logic Utilization by Burying a Register within a COM Output
• Advanced Power Management Features – Automatic 10 μa Standby for “L” Version
• Pin-controlled 1 mA Standby Mode
• Programmable Pin-keeper Inputs and I/Os
• Reduced-power Feature per Macrocell
• Advanced EE Technology
• 100% Tested
• Completely Reprogrammable
• 10,000 Program/Erase Cycles
• 20-year Data Retention
• 2000V ESD Protection
• 200 mA Latch-up Immunity
• JTAG Boundary-scan Testing to IEEE Std. 1149.1-1990 and 1149.1a-1993 Supported
• Fast In-System Programmability (ISP) via JTAG
• PCI-compliant
• 3.3 or 5.0V I/O Pins
• Security Fuse Feature
• Green (Pb/Halide-free/RoHS Compliant) Package Options
• Improved Connectivity (Additional Feedback Routing, Alternate Input Routing)
• Output Enable Product Terms
• Transparent-latch Mode
• Combinatorial Output with Registered Feedback within Any Macrocell
• Three Global Clock Pins
• ITD (Input Transition Detection) Circuits on Global Clocks, Inputs and I/O
• Fast Registered Input from Product Term
• Programmable “Pin-keeper” Option
• Vcc Power-up Reset Option
• Pull-up Option on JTAG Pins TMS and TDI
• Advanced Power Management Features – Edge-controlled Power-down “L”
• Individual Macrocell Power Option
• Disable ITD on Global Clocks, Inputs and I/O for “Z” Parts