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LPC47M148-NC 参数 Datasheet PDF下载

LPC47M148-NC图片预览
型号: LPC47M148-NC
PDF下载: 下载PDF文件 查看货源
内容描述: 128 PIN ENGANCED超级I / O与LPC接口和USB集线器控制器 [128 PIN ENGANCED SUPER I/O CONTROLLER WITH AN LPC INTERFACE AND USB HUB]
分类和应用: 控制器PC
文件页数/大小: 205 页 / 1208 K
品牌: SMSC [ SMSC CORPORATION ]
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t2  
PD<7:0>  
t1  
t5  
t6  
nACK  
nALF  
t4  
t3  
t4  
FIGURE 34 – ECP PARALLEL PORT REVERSE TIMING  
NAME  
DESCRIPTION  
PDATA Valid to nACK Asserted  
nALF Deasserted to PDATA Changed  
nACK Asserted to nALF Deasserted  
(Notes 1,2)  
nACK Deasserted to nALF Asserted (Note 2)  
nALF Asserted to nACK Asserted  
nALF Deasserted to nACK Deasserted  
MIN  
0
0
TYP  
MAX  
UNITS  
ns  
ns  
t1  
t2  
t3  
80  
200  
200  
ns  
t4  
t5  
t6  
80  
0
0
ns  
ns  
ns  
Note 1: Maximum value only applies if there is room in the FIFO and terminal count has not been received. ECP can  
stall by keeping nALF low.  
Note 2: nACK is not considered asserted or deasserted until it is stable for a minimum of 75 to 130 ns.  
SMSC DS – LPC47M14X  
Page 192  
Rev. 03/19/2001  
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