參數(shù)資料
型號: EP2C20F256I6N
廠商: ALTERA CORP
元件分類: FPGA
英文描述: FPGA, 1196 CLBS, PBGA256
封裝: LEAD FREE, FBGA-256
文件頁數(shù): 154/168頁
文件大小: 2206K
代理商: EP2C20F256I6N
4–4
Altera Corporation
Cyclone II Device Handbook, Volume 1
February 2007
Hot-Socketing Feature Implementation in Cyclone II Devices
Figure 4–1. Hot-Socketing Circuit Block Diagram for Cyclone II Devices
The POR circuit monitors VCCINT voltage level and keeps I/O pins
tri-stated until the device is in user mode. The weak pull-up resistor (R)
from the I/O pin to VCCIO keeps the I/O pins from floating. The voltage
tolerance control circuit permits the I/O pins to be driven by 3.3 V before
VCCIO and/or VCCINT are powered, and it prevents the I/O pins from
driving out when the device is not in user mode.
f
For more information, see the DC Characteristics & Timing Specifications
chapter in Volume 1 of the Cyclone II Device Handbook for the value of the
internal weak pull-up resistors.
Figure 4–2 shows a transistor level cross section of the Cyclone II device
I/O buffers. This design ensures that the output buffers do not drive
when VCCIO is powered before VCCINT or if the I/O pad voltage is higher
than VCCIO. This also applies for sudden voltage spikes during hot
socketing. The VPAD leakage current charges the voltage tolerance control
circuit capacitance.
Output Enable
Output
Hot Socket
Output
Pre-Driver
Voltage
Tolerance
Control
Power-On
Reset
Monitor
Weak
Pull-Up
Resistor
PAD
Input Buffer
to Logic Array
R
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EP2C20F256I8 功能描述:FPGA - 現(xiàn)場可編程門陣列 FPGA - Cyclone II 1172 LABs 152 IOs RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256
EP2C20F256I8GA 制造商:Altera Corporation 功能描述:
EP2C20F256I8N 功能描述:FPGA - 現(xiàn)場可編程門陣列 FPGA - Cyclone II 1172 LABs 152 IOs RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256
EP2C20F484C6 功能描述:FPGA - 現(xiàn)場可編程門陣列 FPGA - Cyclone II 1172 LABs 315 IOs RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256
EP2C20F484C6N 功能描述:FPGA - 現(xiàn)場可編程門陣列 FPGA - Cyclone II 1172 LABs 315 IOs RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256