参数资料
型号: DK-START-3C25N
厂商: Altera
文件页数: 8/34页
文件大小: 0K
描述: KIT STARTER CYCLONE III EP3C25
产品培训模块: Cyclone® III FPGA
Three Reasons to Use FPGA's in Industrial Designs
特色产品: Cyclone? III FPGA Starter Kit
标准包装: 1
系列: Cyclone® III
类型: FPGA
适用于相关产品: EP3C25
所含物品: 开发板、Quartus?II 网络版、用户指南、参考手册、示意图、布局、BOM 等
产品目录页面: 605 (CN2011-ZH PDF)
相关产品: EP3C25F256C7N-ND - IC CYCLONE III FPGA 256-FBGA
544-2565-ND - IC CYCLONE III FPGA 25K 324 FBGA
EP3C25E144I7-ND - IC CYCLONE III FPGA 25K 144 EQFP
EP3C25F256I7-ND - IC CYCLONE III FPGA 25K 256 FBGA
EP3C25F324I7-ND - IC CYCLONE III FPGA 25K 324 FBGA
EP3C25U256I7-ND - IC CYCLONE III FPGA 25K 256 UBGA
544-2546-ND - IC CYCLONE III FPGA 25K 256 UBGA
544-2545-ND - IC CYCLONE III FPGA 25K 256 UBGA
544-2544-ND - IC CYCLONE III FPGA 25K 324 FBGA
544-2543-ND - IC CYCLONE III FPGA 25K 256 FBGA
更多...
其它名称: 544-2370
1–8
Chapter 1: Cyclone III Device Datasheet
Electrical Characteristics
Example 1–1 shows you the example to calculate the change of 50 ?? I/O impedance
from 25°C at 3.0 V to 85°C at 3.15 V:
Example 1–1.
? R V = (3.15 – 3) × 1000 × –0.026 = –3.83
? R T = (85 – 25) × 0.262 = 15.72
Because ? R V is negative,
MF V = 1 / (3.83/100 + 1) = 0.963
Because ? R T is positive,
MF T = 15.72/100 + 1 = 1.157
MF = 0.963 × 1.157 = 1.114
R final = 50 × 1.114 = 55.71 ?
Pin Capacitance
Table 1–9 lists the pin capacitance for Cyclone III devices.
Table 1–9. Cyclone III Devices Pin Capacitance
Symbol
C IOTB
C IOLR
C LVDSLR
C VREFLR
Parameter
Input capacitance on top/bottom I/O pins
Input capacitance on left/right I/O pins
Input capacitance on left/right I/O pins with dedicated
LVDS output
Input capacitance on left/right dual-purpose VREF pin
when used as V REF or user I/O pin
Typical –
QFP
7
7
8
21
Typical –
FBGA
6
5
7
21
Unit
pF
pF
pF
pF
C VREFTB
C CLKTB
C CLKLR
Input capacitance on top/bottom dual-purpose VREF pin
when used as V REF or user I/O pin
Input capacitance on top/bottom dedicated clock input
pins
Input capacitance on left/right dedicated clock input pins
23
7
6
23
6
5
pF
pF
pF
Notes to Table 1–9 :
(1) When VREF pin is used as regular input or output, a reduced performance of toggle rate and t CO is expected due to
higher pin capacitance.
(2) C VREFTB for EP3C25 is 30 pF.
July 2012 Altera Corporation
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