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参数资料
型号： EP20K400BI652-3
元件分类： 电源监测
英文描述： Dual Voltage Monitor with Intergrated CPU Supervisor
中文描述： 双电压监视器集成CPU监控
文件页数： 56/114页
文件大小： 1623K
代理商： EP20K400BI652-3
46
Altera Corporation
APEX 20K Programmable Logic Device Family Data Sheet
MultiVolt I/O
Interface
The APEX device architecture supports the MultiVolt I/O interface
feature, which allows APEX devices in all packages to interface with
systems of different supply voltages. The devices have one set of VCC pins
for internal operation and input buffers (VCCINT), and another set for I/O
output drivers (VCCIO).
The APEX 20K VCCINT pins must always be connected to a 2.5 V power
supply. With a 2.5-V VCCINT level, input pins are 2.5-V and 3.3-V tolerant.
Certain devices, identified by a “V” suffix following the speed grade in the
ordering code (e.g., EP20K400BC652-1V), are 5.0-V tolerant. The VCCIO
pins can be connected to either a 2.5-V or 3.3-V power supply, depending
on the output requirements. When VCCIO pins are connected to a 2.5-V
power supply, the output levels are compatible with 2.5-V systems. When
the VCCIO pins are connected to a 3.3-V power supply, the output high is
3.3 V and is compatible with 3.3-V or 5.0-V systems.
Table 12 summarizes 5.0-V tolerant APEX 20K MultiVolt I/O support.
Notes:
(1)
The PCI clamping diode must be disabled to drive an input with voltages higher
than VCCIO.
(2)
APEX 20K devices with a “V” suffix are 5.0-V tolerant.
(3)
When VCCIO = 3.3 V, an APEX 20K device can drive a 2.5-V device with 3.3-V
tolerant inputs.
Open-drain output pins on 5.0-V tolerant APEX 20K devices (with a pull-
up resistor to the 5.0-V supply) can drive 5.0-V CMOS input pins that
require a VIH of 3.5 V. When the pin is inactive, the trace will be pulled up
to 5.0 V by the resistor. The open-drain pin will only drive low or tri-state;
it will never drive high. The rise time is dependent on the value of the pull-
up resistor and load impedance. The IOL current specification should be
considered when selecting a pull-up resistor.
Table 12. 5.0-V Tolerant APEX 20K MultiVolt I/O Support
VCCIO (V)
Input Signals (V)
Output Signals (V)
2.5
3.3
5.0
2.5
3.3
5.0
2.5
vv(1)
v(1), (2)
v
3.3
vv
v(1), (2)
v(3)
vv
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相关代理商/技术参数
参数描述
EP20K400BI652-3ES 制造商:未知厂家 制造商全称:未知厂家 功能描述:FPGA
EP20K400C 制造商:ALTERA 制造商全称:Altera Corporation 功能描述:Programmable Logic
EP20K400CB652C7 功能描述:FPGA - 现场可编程门阵列 CPLD - APEX 20K 1664 Macros 488 IO 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
EP20K400CB652C8 功能描述:FPGA - 现场可编程门阵列 CPLD - APEX 20K 1664 Macros 488 IO 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
EP20K400CB652C9 功能描述:FPGA - 现场可编程门阵列 CPLD - APEX 20K 1664 Macro 488 IOs 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
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