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5M80ZT64I4N 参数 Datasheet PDF下载

5M80ZT64I4N图片预览
型号: 5M80ZT64I4N
PDF下载: 下载PDF文件 查看货源
内容描述: MAX V器件手册 [MAX V Device Handbook]
分类和应用:
文件页数/大小: 166 页 / 4016 K
品牌: ALTERA [ ALTERA CORPORATION ]
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Chapter 2: MAX V Architecture  
2–35  
I/O Structure  
Programmable Pull-Up Resistor  
Each MAX V device I/O pin provides an optional programmable pull-up resistor  
during user mode. If you enable this feature for an I/O pin, the pull-up resistor holds  
the output to the VCCIO level of the output pin’s bank.  
1
1
The programmable pull-up resistor feature should not be used at the same time as the  
bus-hold feature on a given I/O pin.  
The programmable pull-up resistor is active during power-up, ISP, and if the device is  
unprogrammed.  
Programmable Input Delay  
The MAX V IOE includes a programmable input delay that is activated to ensure zero  
hold times. A path where a pin directly drives a register, with minimal routing  
between the two, may require the delay to ensure zero hold time. However, a path  
where a pin drives a register through long routing or through combinational logic  
may not require the delay to achieve a zero hold time. The Quartus II software uses  
this delay to ensure zero hold times when needed.  
MultiVolt I/O Interface  
The MAX V architecture supports the MultiVolt I/O interface feature, which allows  
MAX V devices in all packages to interface with systems of different supply voltages.  
The devices have one set of VCCpins for internal operation (VCCINT), and up to four  
sets for input buffers and I/O output driver buffers (VCCIO), depending on the  
number of I/O banks available in the devices where each set of VCCIOpins powers one  
I/O bank. The 5M40Z, 5M80Z, 5M160Z, 5M240Z, and 5M570Z devices each have two  
I/O banks while the 5M1270Z and 5M2210Z devices each have four I/O banks.  
Connect VCCIOpins to either a 1.2-, 1.5-, 1.8-, 2.5-, or 3.3-V power supply, depending  
on the output requirements. The output levels are compatible with systems of the  
same voltage as the power supply (that is, when VCCIOpins are connected to a 1.5-V  
power supply, the output levels are compatible with 1.5-V systems). When VCCIOpins  
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 2–8 summarizes MAX V MultiVolt I/O support.  
Table 2–8. MultiVolt I/O Support in MAX V Devices (Part 1 of 2) (Note 1)  
Input Signal  
1.5 V 1.8 V 2.5 V 3.3 V  
Output Signal  
5.0 V 1.2 V 1.5 V 1.8 V 2.5 V 3.3 V 5.0 V  
VCCIO (V)  
1.2 V  
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
1.2  
1.5  
1.8  
2.5  
v
v (2) v (2)  
v (3) v (3) v (3)  
December 2010 Altera Corporation  
MAX V Device Handbook  
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