Data Sheet
February 1997
ATT3000 Series Field-Programmable Gate Arrays
Features
Description
■ High performance:
The CMOS ATT3000 Series Field-Programmable
— Up to 270 MHz toggle rates
— 4-input LUT delays <2.7 ns
Gate Array (FPGA) family provides a group of high-
density, digital integrated circuits. Their regular,
extendable, flexible, user-programmable array
architecture is composed of a configuration program
store plus three types of configurable elements: a
perimeter of I/O blocks, a core array of logic blocks,
and resources for interconnection. The general struc-
ture of an FPGA is shown in Figure 1.
■ User-programmable gate arrays
— Unlimited reprogrammability
— Easy design iteration through in-system
logic changes
■ Flexible array architecture:
— Compatible arrays ranging from 1500 to
6000 gate logic complexity
— Extensive register, combinatorial, and I/O
capabilities
The ORCA Foundry for ATT3000 Development Sys-
tem provides automatic place and route of netlists.
Logic and timing simulation are available as design
verification alternatives. The design editor is used for
interactive design optimization and to compile the
data pattern that represents the configuration pro-
gram.
— Low-skew clock nets
— High fan-out signal distribution
— Internal 3-state bus capabilities
— TTL or CMOS input thresholds
— On-chip oscillator amplifier
The FPGA’s user-logic functions and interconnec-
tions are determined by the configuration program
data stored in internal static memory cells. The pro-
gram can be loaded in any of several modes to
accommodate various system requirements. The
program data resides externally in an EEPROM,
EPROM, or ROM on the application circuit board, or
on a floppy disk or hard disk. On-chip initialization
logic provides for optional automatic loading of pro-
gram data at powerup. A serial configuration PROM
can provide a very simple serial configuration pro-
gram storage.
■ Standard product availability:
— Low-power 0.55 µm CMOS, static memory
technology
— Pin-for-pin compatible with Xilinx* XC3000*
and XC3100* families
— Cost-effective for volume production
— 100% factory pretested
— Selectable configuration modes
■ ORCA™ Foundry for ATT3000 Development
System support
*
Xilinx, XC3000, and XC3100 are registered trademarks of
Xilinx, Inc.
■ All FPGAs processed on a QML-certified line
■ Extensive packaging options
Table 1. ATT3000 Series FPGAs
Max
Logic
Gates
Configurable
Logic
Typical Gate
Range
User I/Os
Max
Flip-
Flops
Horizontal Configuration
FPGA
Array
Long Lines
Data Bits
Blocks
ATT3020
ATT3030
ATT3042
ATT3064
ATT3090
1,500
2,000
3,000
4,500
6,000
1,000—1,500
1,500—2,000
2,000—3,000
3,500—4,500
5,000—6,000
64
8 x 8
64
80
96
120
144
256
360
480
688
928
16
20
24
32
40
14,779
22,176
30,784
46,064
64,160
100
144
224
320
10 x 10
12 x 12
16 x 14
20 x 16