- 您现在的位置：买卖IC网 > PDF目录189437 > OR2T26A-6S352I (Electronic Theatre Controls, Inc.) Field-Programmable Gate Arrays PDF资料下载
参数资料
| 型号： | OR2T26A-6S352I |
| 厂商： | Electronic Theatre Controls, Inc. |
| 元件分类： | FPGA |
| 英文描述： | Field-Programmable Gate Arrays |
| 中文描述： | 现场可编程门阵列 |
| 文件页数： | 113/192页 |
| 文件大小： | 3148K |
| 代理商： | OR2T26A-6S352I |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页当前第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页第157页第158页第159页第160页第161页第162页第163页第164页第165页第166页第167页第168页第169页第170页第171页第172页第173页第174页第175页第176页第177页第178页第179页第180页第181页第182页第183页第184页第185页第186页第187页第188页第189页第190页第191页第192页
Lucent Technologies Inc.
27
Data Sheet
June 1999
ORCA Series 2 FPGAs
Programmable Input/Output Cells
(continued)
Regardless of the power supply that the VDD5 pins are
connected to (5 V or 3.3 V), the OR2TxxA devices will
drive the pin to the 3.3 V levels when the output buffer
is enabled. If the other device being driven by the
OR2TxxA device has TTL-compatible inputs, then the
device will not dissipate much input buffer power. This
is because the OR2TxxA output is being driven to a
higher level than the TTL level required. If the other
device has a CMOS-compatible input, the amount of
input buffer power will also be small. Both of these
power values are dependent upon the input buffer char-
acteristics of the other device when driven at the
OR2TxxA output buffer voltage levels.
The 2TxxA device has internal programmable pull-ups
on the I/O buffers. These pull-up voltages are always
referenced to VDD. This means that the VDD5 voltage
has no effect on the value of the pull-up voltage at the
pad. This voltage level is always sufficient to pull the
input buffer of the 2TxxA device to a high state. The pin
on the 2TxxA device will be at a level 1.0 V below VDD
(minimum of 2.0 V with a minimum VDD of 3.0 V). This
voltage is sufficient to pull the external pin up to a 3.3 V
CMOS high-input level (1.8 V min) or a TTL high-input
level (2.0 V min) in a 5 V tolerant system, but it will
never pull the pad up to the VDD5 rail. Therefore, in a
5 V tolerant system using 5 V CMOS parts, care must
be taken to evaluate the use of these pull-ups to pull
the pin of the 2TxxA device to a typical 5 V CMOS
high-input level (2.2 V min).
For more information on 5 V tolerant I/Os, please see
ORCA
Series 5 V Tolerant I/Os Application Note
(AP99-027FPGA), May 1999.
5 V Tolerant I/O (OR2TxxB)
The I/O on the OR2TxxB Series devices allow intercon-
nection to both 3.3 V and 5 V device (selectable on a
per-pin basis). Unlike the OR2TxxA family, when inter-
faceing into a 5 V signal, it no longer requires a VDD5
supply.
The OR2TxxB devices will drive the pin to the 3.3 V lev-
els when the output buffer is enabled. If the other
device being driven by the OR2TxxB device has TTL-
compatible inputs, then the device will not dissipate
much input buffer power. This is because the OR2TxxB
output is being driven to a higher level than the TTL
level required. If the other device has a CMOS-compat-
ible input, the amount of input buffer power will also be
small. Both of these power values are dependent upon
the input buffer characteristics of the other device when
driven at the OR2TxxB output buffer voltage levels.
The OR2TxxB device has internal programmable pull-
ups on the I/O buffers. These pull-up voltages are
always referenced to VDD and are always sufficient to
pull the input buffer of the OR2TxxB device to a high
state. The pin on the OR2TxxB device will be at a level
1.0 V below VDD (minimum of 2.0 V with a minimum
VDD of 3.0 V). This voltage is sufficient to pull the exter-
nal pin up to a 3.3 V CMOS high-input level (1.8 V, min)
or a TTL high input level (2.0 V, min) in a 5 V tolerant
system. Therefore, in a 5 V tolerant system using 5 V
CMOS parts, care must be taken to evaluate the use of
these pull-ups to pull the pin of the OR2TxxB device to
a typical 5 V CMOS high-input level (2.2 V, min).
PCI Compliant I/O
The I/O on the OR2TxxB Series devices allows compli-
ance with PCI local bus (Rev. 2.1) 5 V and 3.3 V signal-
ing environments. The signaling environment used for
each input buffer can be selected on a per-pin basis.
The selection provides the appropriate I/O clamping
diodes for PCI compliance.
OR2TxxB devices have 5 V tolerant I/Os as previously
explained, but can optionally be selected on a pin-by-
pin basis to be PCI bus 3.3 V signaling compliant (PCI
bus 5 V signaling compliance occurs in 5 V tolerant
operation mode). Inputs may have a pull-up or pull-
down resistor selected on an input for signal stabiliza-
tion and power management. Input signals in a PIO
can be passed to PIC routing on any of three paths,
two general signal paths into PIC routing, and/or a fast
route into the clock routing system.
OR2TxxA series devices are only compliant in 3.3 V
PCI Local Bus (Rev 2.1) signalling environments.
OR2CxxA devices are only compliant in 5 V PCI Local
Bus (Rev 2.1) signalling environments.
相关PDF资料 |
PDF描述 |
|---|---|
| OR2T26A-6S432 | Field-Programmable Gate Arrays |
| OR2T26A-6S432I | Field-Programmable Gate Arrays |
| OR2T26A-6T208 | Field-Programmable Gate Arrays |
| OR2T26A-6T208I | Field-Programmable Gate Arrays |
| OR2T26A-6T240 | Field-Programmable Gate Arrays |
相关代理商/技术参数 |
参数描述 |
|---|---|
| OR2T26A7BA352-DB | 功能描述:FPGA - 现场可编程门阵列 2304 LUT 326 I/O RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 栅极数量: 逻辑块数量:943 内嵌式块RAM - EBR:1956 kbit 输入/输出端数量:128 最大工作频率:800 MHz 工作电源电压:1.1 V 最大工作温度:+ 70 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-256 |
| OR2T26A7BC432-DB | 功能描述:FPGA - 现场可编程门阵列 2304 LUT 326 I/O RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 栅极数量: 逻辑块数量:943 内嵌式块RAM - EBR:1956 kbit 输入/输出端数量:128 最大工作频率:800 MHz 工作电源电压:1.1 V 最大工作温度:+ 70 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-256 |
| OR2T26A7PS208-DB | 功能描述:FPGA - 现场可编程门阵列 2304 LUT 326 I/O RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 栅极数量: 逻辑块数量:943 内嵌式块RAM - EBR:1956 kbit 输入/输出端数量:128 最大工作频率:800 MHz 工作电源电压:1.1 V 最大工作温度:+ 70 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-256 |
| OR2T26A7PS240-DB | 功能描述:FPGA - 现场可编程门阵列 2304 LUT 326 I/O RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 栅极数量: 逻辑块数量:943 内嵌式块RAM - EBR:1956 kbit 输入/输出端数量:128 最大工作频率:800 MHz 工作电源电压:1.1 V 最大工作温度:+ 70 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-256 |
| OR2T26A7S208-DB | 功能描述:FPGA - 现场可编程门阵列 Use LatticeEC RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 栅极数量: 逻辑块数量:943 内嵌式块RAM - EBR:1956 kbit 输入/输出端数量:128 最大工作频率:800 MHz 工作电源电压:1.1 V 最大工作温度:+ 70 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-256 |
发布紧急采购，3分钟左右您将得到回复。