Demo Designs
configured. Press S2 and the 000 changes to the number of times that
the MAX II device could have configured itself in that interval
(typical values should be between 300-600 for fast button pushers).
Test 2. Using a Scope to Measure Power-Up Times
1.
2.
3.
4.
5.
Program the MAX II device with the InstantOnDemo.pof file that is
located in the <root> /Examples/HW/Demos directory. (Refer to
to load POF files into the MAX II device.)
Attach scope probes to the four Active I/O test points located near
the prototyping area on the board.
Set the trigger on the scope to the channel connected to the V CCINT
test point and trigger on the rising edge (LVTTL logic level).
Set the load on V CCINT to the desired amount by tuning the variable
resistor (potentiometer), labeled POT1.
Press S5 on the board to interrupt the power and observe the ramp
time of V CCINT via the provided test point. A sample screen is shown
below (see Figure 2–4 ).
Understanding the Results
The most detailed analysis of the power-up character of a MAX II device
comes from viewing probe points during the power-up cycle with a
digital oscilloscope. The development board has a variable core V CC rise
time control. This system uses POT1 to vary the MAX II core V CC rise time
from 80 μ s to 150 ms. The on-board test points provide users with an easy
way to examine the ramp time of V CCINT and the resulting configuration
completion time. The ramp time of V CCINT can be varied with POT1, thus
allowing this circuit to match almost any system’s power-up rise time and
analyze how the MAX II device performs. To make power cycling even
easier, S5 will power cycle the MAX II V CCINT supply any time it is
pressed and released. The development board provides four useful probe
points:
V_INT = V CCINT (MAX II core voltage supply)
V_IO = V CCIO (MAX II I/O voltage supply)
GND = Board Ground plane
ACTIVE_IO = MAX II User I/O pin P12
2–10 Development Kit Version 1.1.0
MAX II Development Kit Getting Started User Guide
Altera Corporation
July 2005
相关PDF资料
DK-N2EVAL-3C25N KIT DEV NIOS II CYCLONE III ED.
DK-NIOS-2C35N NIOS II KIT W/CYCLONE II EP2C35N
DK-NIOS-2S60N NIOS II KIT W/STRATIX II EP2S60N
DK-PCI-2C35N PCI KIT W/CYCLONE II EP2C35N
DK-PCIE-2SGX90N PCIE KIT W/S II GX EP2SGX90N
DK-SI-2SGX90N SI KIT W/SII GX EP2SGX90N
DK-SI-4SGX230N KIT DEV STRATIX IV 4SGX230N/C2
DK-START-3C25N KIT STARTER CYCLONE III EP3C25
相关代理商/技术参数
DK-MINI SENSOR RAIL 制造商:Banner Engineering 功能描述:OPTICAL RAIL ASSY MINI SENSOR DEMO KIT
DK-MN-00 功能描述:KIT DEV M1-MINI W/M1 AND M3 MOD 制造商:skyetek inc 系列:M1 迷你型 SkyeModule?? 零件状态:有效 类型:读/写 频率:13.56MHz 配套使用产品/相关产品:SkyeModule? M1-Mini 模块 所含物品:模块,样品标签,天线,演示软件,设备驱动器,设计指南和应用注释 标准包装:1
DK-MN-00-1.0 功能描述:KIT DEV M1-MINI W/M1 AND M3 MOD RoHS:是 类别:RF/IF 和 RFID >> RFID 评估和开发套件及电路板 系列:M1 迷你型 SkyeModule™ 产品培训模块:M24LR64 Dual Interface EEPROM 标准包装:1 系列:- 类型:读取器模块 频率:13.56MHz 适用于相关产品:M24LR-64-R 已供物品:2 根基准天线,I2C 和 RFID 读取器,样品 其它名称:497-10480
DK-MN-00-HF-RC 功能描述:射频识别变换器工具 M1 MINI DEV KIT W/ 1 M1&3 M1 MINI MODS RoHS:否 制造商:Olimex Ltd. 产品:RFID Readers 用于:ISO15693
DKMW20F-12 功能描述:I/P: 9-36VDC;O/P:12V 制造商:mean well usa inc. 系列:DKMW20 包装:- 零件状态:在售 类型:隔离模块 输出数:2 电压 - 输入(最小值):9V 电压 - 输入(最大值):36V 电压 - 输出 1:12V 电压 - 输出 2:-12V 电压 - 输出 3:- 电压 - 输出 4:- 电流 - 输出(最大值):830mA,830mA 功率(W):20W 电压 - 隔离:1500V 应用:ITE(商业) 特性:远程开/关,OCP,OVP,SCP,UVLO 工作温度:-40°C ~ 85°C(有降额) 效率:87% 安装类型:通孔 封装/外壳:6-DIP 模块 大小/尺寸:1.00" 长 x 1.00" 宽 x 0.40" 高(25.4mm x 25.4mm x 10.2mm) 供应商器件封装:- 标准包装:1
DKMW20F-15 功能描述:I/P: 9-36VDC;O/P:15V 制造商:mean well usa inc. 系列:DKMW20 包装:- 零件状态:在售 类型:隔离模块 输出数:2 电压 - 输入(最小值):9V 电压 - 输入(最大值):36V 电压 - 输出 1:15V 电压 - 输出 2:-15V 电压 - 输出 3:- 电压 - 输出 4:- 电流 - 输出(最大值):660mA,660mA 功率(W):20W 电压 - 隔离:1500V 应用:ITE(商业) 特性:远程开/关,OCP,OVP,SCP,UVLO 工作温度:-40°C ~ 85°C(有降额) 效率:87% 安装类型:通孔 封装/外壳:6-DIP 模块 大小/尺寸:1.00" 长 x 1.00" 宽 x 0.40" 高(25.4mm x 25.4mm x 10.2mm) 供应商器件封装:- 标准包装:1
DKMW20G-12 功能描述:I/P:18-75VDC;O/P:12V 制造商:mean well usa inc. 系列:DKMW20 包装:- 零件状态:在售 类型:隔离模块 输出数:2 电压 - 输入(最小值):18V 电压 - 输入(最大值):75V 电压 - 输出 1:12V 电压 - 输出 2:-12V 电压 - 输出 3:- 电压 - 输出 4:- 电流 - 输出(最大值):830mA,830mA 功率(W):20W 电压 - 隔离:1500V 应用:ITE(商业) 特性:远程开/关,OCP,OVP,SCP,UVLO 工作温度:-40°C ~ 85°C(有降额) 效率:87% 安装类型:通孔 封装/外壳:6-DIP 模块 大小/尺寸:1.00" 长 x 1.00" 宽 x 0.40" 高(25.4mm x 25.4mm x 10.2mm) 供应商器件封装:- 标准包装:1
DKMW20G-15 功能描述:I/P:18-75VDC;O/P:15V 制造商:mean well usa inc. 系列:DKMW20 包装:- 零件状态:在售 类型:隔离模块 输出数:2 电压 - 输入(最小值):18V 电压 - 输入(最大值):75V 电压 - 输出 1:15V 电压 - 输出 2:-15V 电压 - 输出 3:- 电压 - 输出 4:- 电流 - 输出(最大值):660mA,660mA 功率(W):20W 电压 - 隔离:1500V 应用:ITE(商业) 特性:远程开/关,OCP,OVP,SCP,UVLO 工作温度:-40°C ~ 85°C(有降额) 效率:88% 安装类型:通孔 封装/外壳:6-DIP 模块 大小/尺寸:1.00" 长 x 1.00" 宽 x 0.40" 高(25.4mm x 25.4mm x 10.2mm) 供应商器件封装:- 标准包装:1