XC4028XL各脚功能电路原理芯片引脚定义引脚图及功能IC贸易商-中国IC网-芯三七

当前位置：IC37首页_>X字母起始型号索引_>X字母起始型号索引第171页更新时间：2025-01-20 21:30:27

产品型号XC4028XL的概述

XC4028XL芯片概述 XC4028XL是由Xilinx公司制造的一款经典可编程逻辑器件，属于其XC4000系列。该系列的FPGA（现场可编程门阵列）芯片广泛应用于数字电路设计中，为设计师提供了灵活性和高性能的解决方案。XC4028XL具备高达28,000个可编程逻辑单元，使其在处理复杂数据处理和控制任务时表现出色。与传统的硬连线逻辑方案相比，XC4028XL的可编程性使其能够根据实际需求进行特定功能的设计和复制，极大地缩短了产品的开发周期。 XC4028XL的详细参数 XC4028XL作为FPGA的一员，拥有许多引人注目的技术参数。以下是其主要参数： - 逻辑单元数（Logic Cells）: 28,672个可编程逻辑单元，为复杂的逻辑设计提供支持。 - 查找表（LUTs）: 每个逻辑单元包含4个输入的查找表，能够实现任意组合逻辑功能。 - I/O引脚: 提供多达128个可编程输入...

产品型号XC4028XL的Datasheet PDF文件预览

XC4000E

Logic Cell Array Family

Product Preview

Features

Description

The XC4000E family of Field-Programmable Gate Arrays

(FPGAs) provides the benefits of custom CMOS VLSI,

while avoiding the initial cost, time delay, and inherent risk

of a conventional masked gate array.

• Third Generation Field-Programmable Gate Arrays

– On-chip ultra-fast RAM with synchronous write option

– Dual-port RAM option

– Fully PCI compliant

– Abundant flip-flops

The XC4000E family provides a regular, flexible, pro-

grammable architecture of Configurable Logic Blocks

(CLBs), interconnected by a powerful hierarchy of versa-

tile routing resources, and surrounded by a perimeter of

programmable Input/Output Blocks (IOBs).

– Flexible function generators

– Dedicated high-speed carry-propagation circuit

– Wide edge decoders (four per edge)

– Hierarchy of interconnect lines

– Internal 3-state bus capability

XC4000E devices have generous routing resources to

accommodate the most complex interconnect patterns.

They are customized by loading configuration data into

the internal memory cells. The FPGA can either actively

read its configuration data out of external serial or byte-

parallel PROM (master modes), or the configuration data

can be written into the FPGA (slave and peripheral

modes).

– 8 global low-skew clock or signal distribution network

• Flexible Array Architecture

– Programmable logic blocks and I/O blocks

– Programmable interconnects and wide decoders

• Sub-micron CMOS Process

– High-speed logic and Interconnect

– Low power consumption

• Systems-Oriented Features

The XC4000E family is supported by powerful and sophis-

ticated software, covering every aspect of design: from

schematic entry, to simulation, to automatic block place-

ment and routing of interconnects, and finally the creation

of the configuration bit stream.

– IEEE 1149.1-compatible boundary-scan logic support

– Programmable output slew rate (2 modes)

– Programmable input pull-up or pull-down resistors

– 12-mA sink current per output

– 24-mA sink current per output pair

FPGAs are ideal for shortening the design and develop-

ment cycle, but they also offer a cost-effective solution for

production rates well beyond 1,000 systems per month.

• Configured by Loading Binary File

– Unlimited reprogrammability

– Six programming modes

The XC4000E family is a superset of the popular XC4000

family. For a detailed description of the device architec-

ture, configuration methods, pin functionality, package

pin-outs and dimensions, see the Xilinx Programmable

Logic Data Book.

• XACT Development System runs on ’386/’486/

Pentium-type PC, Apollo, Sun-4, and Hewlett-Packard

700 series

– Interfaces to popular design environments like

Viewlogic, Mentor Graphics and OrCAD

– Fully automatic partitioning, placement and routing

– Interactive design editor for design optimization

– 288 macros, 34 hard macros, RAM/ROM compiler

The following pages describes the new features of the

XC4000E family and list electrical and timing parameters.

Table 1. The XC4000E Family of Field-Programmable Gate Arrays

Device

XC4003E XC4005E

XC4006E

XC4008E XC4010E

XC4013E

XC4020E XC4025E

Appr. Gate Count

CLB Matrix

Number of CLBs

Number of Flip-Flops

Max Decode Inputs (per side)

Max RAM Bits

3,000

10 x 10

100

360

5,000

14 x 14

196

616

6,000

16 x 16

256

768

8,000

18 x 18

324

936

10,000

20 x 20

400

1,120

13,000

24 x 24

576

1,536

20,000

28 x 28

784

2,016

25,000

32 x 32

1,024

2,560

3,200

6,272

112

8,192

128

10,368

144

12,800

160

18,432

192

25,088

224

32,768

256

Number of IOBs

XC4000E Logic Cell Array Family

XC4000E compared to XC4000

IOB Clock Enable

AnyXC4000Edeviceisa100%compatiblesupersetofthe

equivalent XC4000 device, not only functionally, but also

electrically, and in pin-out and configuration bitstream.

Thetwoflip-flopsineachIOBhaveacommonclockenable

input,which through configuration can be activated indi-

vidually for the input or output flip-flop or both. This clock

enable operates exactly like the EC pin on the XC4000

CLB. This makes the IOBs more versatile, and avoids the

need for clock gating.

The XC4000E devices have the following additional func-

tions, most of which are invoked through options in the

configuration bitstream:

Output Drivers

Synchronous RAM

The output pull-up structure can be globally configured to

be either a TTL-like totem-pole (n-channel pull-up transis-

tor, pulling to a voltage one threshold below Vcc, just like

XC4000) or to be CMOS (p-channel pull-up transistor

pulling to Vcc). Also, the configurable pull-up resistor in

XC4000E is a p-channel transistor that pulls to Vcc,

whereas in XC4000 it is an n-channel transistor that pulls

to a voltage one threshold below Vcc.

ThetwoRAMsinanyCLBcanbechangedtosynchronous

write operation. In this synchronous mode, the internal

write operation is controlled by the same clock that drives

the flip-flops. The clock polarity is programmable for the

RAM (both F and G function generators together), but is

independent of the chosen flip-flop polarity. Address,

Data, and WE inputs are latched by this rising or falling

clock edge, and a short internal write pulse is generated

right after the clock edge. This self-timed write operation is

thus effectively edge-triggered.

Input Thresholds

The input thresholds can be globally configured for either

TTL ( 1.2 V threshold) or CMOS ( 2.5 V threshold ), just like

XC2000 and XC3000 inputs. Note that the two global

adjustments of input threshold and output level are inde-

pendent of each other.

The read operation is not affected by this change to a

synchronous write.

Dual-Port RAM

A separate option converts the 16 x 2 RAM in any CLB into

a 16 x 1 dual-port RAM. In this mode, any operation that

writesintotheF-RAM, automaticallyalsowritesintotheG-

RAM, using the F address. The G-address can, therefore,

not be used to write into the G-RAM.

Global Signal Access to Logic

There is additional access from global clocks to the F and

G function generator inputs.

Mode-Pin Pull-Up Resistors

During configuration, the three mode pins, M0, M1, and

M2, have weak pull-up resistors. For the most popular

configuration mode, Slave Serial, the mode pins can thus

be left unconnected.

The CLB can thus be used as an asymmetrical dual-port

RAM, withFbeingthereadaddressfortheF-RAMandthe

write address for both F- and G-RAM, while G is the read

address for the G-RAM. Note that F and G can still be

independent read addresses, as they are in XC4000. The

two RAMs together have one read/write port using the F

address, and one read-only port using the G address.

For user mode, the three mode inputs can individually be

configured with or without weak pull-up or pull-down

resistors

The PROGRAM input pin has a permanent weak pull-up.

Each CLB can be configured as function generators either

asynchronous single-port, synchronous single-port, or

synchronous dual-port.

Soft Startup

Like XC3000A, the XC4000E family has “Soft Startup”.

When the configuration process is finished and the device

starts up in user mode, the first activation of the outputs is

automatically slew-rate limited. This avoids the potential

ground bounce when all outputs are turned on simulta-

neously. After start-up, the slew rate of the individual

outputs is, as in the XC4000 family, determined by the

individual configuration option.

H-Function Generator

In XC4000E, the H function generator is more versatile. Its

inputs can come not only from the F and G function

generators but also from up to three control input lines.

The H function generator can be totally or partially inde-

pendent of the other two function generators.

IOB Switching Characteristic Guidelines

Testing of the switching parameters is modeled after testing methods specified by MIL-M-38510/605. All devices are 100%

functionally tested. Since many internal timing parameters cannot be measured directly, they are derived from benchmark timing

patterns. The following guidelines reflect worst-case values over the recommended operating conditions. For more detailed, more

precise, and more up-to-date timing information, use the values provided by the XACT timing calculator and used in the simulator.

Speed Grade

-4

-3

-2

Description

Symbol Min Max

Min Max Min Max Units

Input

Propagation Delays

Pad to I1, I2

T_PID

T_PLI

T_PDLI

T_IKRI

T_IKLI

2.5

3.6

7.1

2.8

3.0

Pad to I1, I2, via transparent latch (no delay)

Pad to I1, I2, via transparent latch (with delay)

Clock (IK) toI1, I2, (flip-flop)

Clock (IK) to I1, I2 (latch enable, active Low)

Set-up Time (Note 3)

Pad to Clock (IK), no delay

Pad to Clock (IK) with delay

T_PICK

T_PICKD

4.7

8.3

Hold Time (Note 3)

Pad to Clock (IK), no delay

Pad to Clock (IK) with delay

T_IKPI

T_IKPID

Output

Propagation Delays

Clock (OK) to Pad

same

Output (O) to Pad

same

3-state to Pad begin hi-Z (slew-rate independent)

3-state to Pad active and valid (fast)

(fast)

(slew rate limited)

(fast)

T_OKPOF

T_OKPOS

T_OPF

4.6

11.2

5.8

12.4

4.2

(slew-rate limited)

T_OPS

T_TSHZ

T_TSONF

T_TSONS

8.1

14.7

same

(slew -rate limited)

Set-up and Hold Times

Output (O) to clock (OK) set-up time

Output (O) to clock (OK) hold time

T_OOK

T_OKO

3.7

Clock

Clock High or Low time

T_CH/T_CL

4.0

Global Set/Reset

Delay from GSR net through Q to I1, I2

Delay from GSR net to Pad

GSR width*

T_RRI

T_RPO

T_MRW

7.2

18.9

* Timing is based on the XC4005E. For other devices see XACT timing calculator.

** See preceding page

Notes: 1. Timing is measured at pin threshold, with 50 pF external capacitive loads (incl. test fixture). Slew rate limited output

rise/fall times are approximately two times longer than fast output rise/fall times. For the effect of capacitive loads on

ground bounce, see pages 8-8 through 8-10.

2. Voltage levels of unused (bonded and unbonded) pads must be valid logic levels. Each can be configured with the

internal pull-up or pull-down resistor or alternatively configured as a driven output or be driven from an external source.

3. Input pad setup times and hold times are specified with respect to the internal clock (IK). To calculate system setup time,

subtract clock delay (clock pad to IK) from the specified input pad setup time value, but do not subtract below zero.

Negative hold time means that the delay in the input data is adequate for the external system hold time to be zero,

provided the input clock uses the Global signal distribution from pad to IK.

XC4000E Logic Cell Array Family

CLB Switching Characteristic Guidelines

Testing of the switching parameters is modeled after testing methods specified by MIL-M-38510/605. All devices are 100%

functionally tested. Since many internal timing parameters cannot be measured directly, they are derived from benchmark timing

patterns. The following guidelines reflect worst-case values over the recommended operating conditions. For more detailed, more

precise, and more up-to-date timing information, use the values provided by the XACT timing calculator and used in the simulator.

Speed Grade

Symbol

-4

-3

-2

Description

Min Max Min Max Min Max Units

Combinatorial Delays

F/G inputs to X/Y outputs

F/G inputs via H’ to X/Y outputs

C inputs via H’ to X/Y outputs

T_ILO

T_IHO

T_HHO

2.0

3.6

2.9

CLB Fast Carry Logic

Operand inputs (F1,F2,G1,G4) to C^OUT

Add/Subtract input (F3) to C^OUT

Initialization inputs (F1,F3) to C^OUT

C_INthrough function generators to X/Y outputs

C_INto C_OUT, bypass function generators.

T_OPCY

T_ASCY

T_INCY

T_SUM

T_BYP

2.6

4.4

1.7

3.3

0.7

Sequential Delays

Clock K to outputs Q

T_CKO

2.4

Set-up Time before Clock K

F/G inputs

T_ICK

2.3

4.0

3.3

1.9

2.6

1.7

F/G inputs via H’

C inputs via H1

C inputs via DIN

C inputs via EC

C inputs via S/R, going Low (inactive)

C_INinput via F'/G'

C_INinput via F'/G' and H'

T_IHCK

T_HHCK

T_DICK

T_ECCK

T_RCK

T_CCK

T_CHCK

Hold Time after Clock K

F/G inputs

T_CKI

F/G inputs via H’

C inputs via H1

C inputs via DIN

C inputs via EC

T_CKIH

T_CKHH

T_CKDI

T_CKEC

T_CKR

C inputs via S/R, going Low (inactive)

Clock

Clock High time

Clock Low time

T_CH

T_CL

4.0

Set/Reset Direct

Width (High)

Delay from C inputs via S/R, going High to Q

T_RPW

T_RIO

4.0

Master Set/Reset*

Width (High or Low)

Delay from Global Set/Reset net to Q

T_MRW

T_MRQ

18.9

14.4

Timing is based on the XC4005E. For other devices see XACT timing calculator.

XC4028XL相关文章

配单直通车

深圳市芯福林电子有限公司服务专线: 13418564337 在线联系:

QQ：2881495808 复制

QQ：308365177 复制

北京元坤伟业科技有限公司服务专线: 010-62104931621064316210489162104791 在线联系:

QQ：857273081 复制

QQ：1594462451 复制

深圳市中利达电子科技有限公司服务专线: 0755-13686833545 在线联系:

QQ：1902134819 复制

QQ：2881689472 复制

首天国际（深圳）科技有限公司服务专线: 0755-82807802/82807803 在线联系:

QQ：528164397 复制

QQ：1318502189 复制

柒号芯城电子商务（深圳）有限公司服务专线: 18922803401 在线联系:

QQ：2881677436 复制

QQ：2881620402 复制

电子百科

产品导航

产品型号XC4028XL的概述

产品型号XC4028XL的Datasheet PDF文件预览

XC4028XL相关产品..

XC4028XL相关文章

IC37:专业IC行业平台