EPF8282AV datasheet(3/62 Pages) ALTERA

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Altera Corporation

FLEX 8000 Programmable Logic Device Family Data Sheet

FLEX 8000 devices provide a large number of storage elements for

applications such as digital signal processing (DSP), wide-data-path

manipulation, and data transformation. These devices are an excellent

choice for bus interfaces, TTL integration, coprocessor functions, and

high-speed controllers. The high-pin-count packages can integrate

multiple 32-bit buses into a single device. Table 3 shows FLEX 8000

performance and LE requirements for typical applications.

All FLEX 8000 device packages provide four dedicated inputs for

synchronous control signals with large fan-outs. Each I/O pin has an

associated register on the periphery of the device. As outputs, these

registers provide fast clock-to-output times; as inputs, they offer quick

setup times.

The logic and interconnections in the FLEX 8000 architecture are

configured with CMOS SRAM elements. FLEX 8000 devices are

configured at system power-up with data stored in an industry-standard

parallel EPROM or an Altera serial configuration devices, or with data

provided by a system controller. Altera offers the EPC1, EPC1213,

EPC1064, and EPC1441 configuration devices, which configure

FLEX 8000 devices via a serial data stream. Configuration data can also be

stored in an industry-standard 32 K

× 8 bit or larger configuration device,

or downloaded from system RAM. After a FLEX 8000 device has been

configured, it can be reconfigured in-circuit by resetting the device and

loading new data. Because reconfiguration requires less than 100 ms, real-

time changes can be made during system operation. For information on

how to configure FLEX 8000 devices, go to the following documents:

■

Configuration Devices for APEX & FLEX Devices Data Sheet

■

BitBlaster Serial Download Cable Data Sheet

■

ByteBlasterMV Parallel Port Download Cable Data Sheet

■

Application Note 33 (Configuring FLEX 8000 Devices)

■

Application Note 38 (Configuring Multiple FLEX 8000 Devices)

Table 3. FLEX 8000 Performance

Application

LEs Used

Speed Grade

Units

A-2

A-3

A-4

16-bit loadable counter

125

MHz

16-bit up/down counter

125

MHz

24-bit accumulator

MHz

16-bit address decode

4.2

4.9

6.3

16-to-1 multiplexer

6.6

7.9

9.5

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