ISPLSI1048E-90LT FPGAs Overview
The ispLSI 1048E is a High Density Programmable Logic Device containing 288 Registers, 96 Universal I/O pins, 12 Dedicated Input pins, four Dedicated Clock Input pins, two dedicated Global OE input pins, and a Global Routing Pool (GRP). The GRP provides complete interconnectivity between all of these elements. The ispLSI 1048E offers 5V non-volatile in-system programmability of the logic, as well as the interconnect to provide truly reconfigurable systems. A functional superset of the ispLSI 1048 architecture, the ispLSI 1048E device adds two new global output enable pins and two additional dedicated inputs.
The basic unit of logic on the ispLSI 1048E device is the Generic Logic Block (GLB). The GLBs are labeled A0, A1…F7 (see ISPLSI1048E-90LT Datasheet). There are a total of 48 GLBs in the ispLSI 1048E device. Each GLB has 18 inputs, a programmable AND/OR/Exclusive OR array, and four outputs which can be configured to be either combinatorial or registered. Inputs to the GLB come from the GRP and dedicated inputs. All of the GLB outputs are brought back into the GRP so that they can be connected to the inputs of any other GLB on the device.
Features
• HIGH DENSITY PROGRAMMABLE LOGIC
— 8,000 PLD Gates
— 96 I/O Pins, Twelve Dedicated Inputs
— 288 Registers
— High-Speed Global Interconnects
— Wide Input Gating for Fast Counters, State Machines, Address Decoders, etc.
— Small Logic Block Size for Random Logic
— Functionally and Pin-out Compatible to ispLSI 1048C
• HIGH PERFORMANCE E2CMOS TECHNOLOGY
— fmax = 125 MHz Maximum Operating Frequency
— tpd = 7.5 ns Propagation Delay
— TTL Compatible Inputs and Outputs
— Electrically Eraseable and Reprogrammable
— Non-Volatile
— 100% Tested at Time of Manufacture
• IN-SYSTEM PROGRAMMABLE
— In-System Programmable (ISP) 5V Only
— Increased Manufacturing Yields, Reduced Time-to Market and Improved Product Quality
— Reprogram Soldered Devices for Faster Prototyping
• OFFERS THE EASE OF USE AND FAST SYSTEM SPEED OF PLDs WITH THE DENSITY AND FLEXIBILITY OF FIELD PROGRAMMABLE GATE ARRAYS
— Complete Programmable Device Can Combine Glue Logic and Structured Designs
— Enhanced Pin Locking Capability
— Four Dedicated Clock Input Pins
— Synchronous and Asynchronous Clocks
— Programmable Output Slew Rate Control to Minimize Switching Noise
— Flexible Pin Placement
— Optimized Global Routing Pool Provides Global Interconnectivity
— Lead-Free Package Options