鈥?/div>
t
pd
= 4.5 ns Propagation Delay
鈥?TTL Compatible Inputs and Outputs
鈥?Electrically Erasable and Reprogrammable
鈥?Non-Volatile
鈥?100% Tested at Time of Manufacture
鈥?Unused Product Term Shutdown Saves Power
鈥?IN-SYSTEM PROGRAMMABLE
鈥?Increased Manufacturing Yields, Reduced Time-to-
Market and Improved Product Quality
鈥?Reprogram Soldered Devices for Faster Prototyping
鈥?OFFERS THE EASE OF USE AND FAST SYSTEM
SPEED OF PLDs WITH THE DENSITY AND FLEXIBILITY
OF FIELD PROGRAMMABLE GATE ARRAYS
鈥?Complete Programmable Device Can Combine Glue
Logic and Structured Designs
鈥?Enhanced Pin Locking Capability
鈥?Four Dedicated Clock Input Pins
鈥?Synchronous and Asynchronous Clocks
鈥?Programmable Output Slew Rate Control to
Minimize Switching Noise
鈥?Flexible Pin Placement
鈥?Optimized Global Routing Pool Provides Global
Interconnectivity
鈥?ispDesignEXPERT鈩?鈥?LOGIC COMPILER AND COM-
PLETE ISP DEVICE DESIGN SYSTEMS FROM HDL
SYNTHESIS THROUGH IN-SYSTEM PROGRAMMING
鈥?Superior Quality of Results
鈥?Tightly Integrated with Leading CAE Vendor Tools
鈥?Productivity Enhancing Timing Analyzer, Explore
Tools, Timing Simulator and ispANALYZER鈩?/div>
鈥?PC and UNIX Platforms
E
2
CMOS
廬
Functional Block Diagram
A0
D Q
C7
Output Routing Pool
0139/1024EA
Output Routing Pool
A1
A2
A3
A4
A5
A6
A7
D Q
D Q
C6
Logic
Array
C5
D Q
GLB
C4
C3
C2
C1
Global Routing Pool (GRP)
B0 B1 B2 B3 B4 B5 B6 B7
Output Routing Pool
C0
CLK
Description
The ispLSI 1024EA is a High Density Programmable
Logic Device containing 144 Registers, 48 Universal I/O
pins, two Dedicated Input pins, four Dedicated Clock
Input pins and a Global Routing Pool (GRP). The GRP
provides complete interconnectivity between all of these
elements. The ispLSI 1024EA features 5V in-system
diagnostic capabilities via IEEE 1149.1 Test Access Port.
The ispLSI 1024EA device offers non-volatile
reprogrammability of the logic, as well as the intercon-
nects to provide truly reconfigurable systems. A functional
superset of the ispLSI 1024 architecture, the ispLSI
1024EA device adds user selectable 3.3V or 5V I/O and
open-drain output options.
The basic unit of logic on the ispLSI 1024EA device is the
Generic Logic Block (GLB). The GLBs are labeled A0,
A1鈥7 (Figure 1). There are a total of 24 GLBs in the
ispLSI 1024EA device. Each GLB has 18 inputs, a
programmable AND/OR/Exclusive OR array, and four
outputs which can be configured to be either combinato-
rial 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.
Copyright 漏 2000 Lattice Semiconductor Corp. All brand or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein are subject
to change without notice.
LATTICE SEMICONDUCTOR CORP., 5555 Northeast Moore Ct., Hillsboro, Oregon 97124, U.S.A.
Tel. (503) 268-8000; 1-800-LATTICE; FAX (503) 268-8556; http://www.latticesemi.com
June 2000
1024ea_01
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