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HD6473434F16 参数 Datasheet PDF下载

HD6473434F16图片预览
型号: HD6473434F16
PDF下载: 下载PDF文件 查看货源
内容描述: 12伏不能应用于S -掩模模型(单电源规格) ,因为这可能会永久损坏设备。 [12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.]
分类和应用: 外围集成电路微控制器可编程只读存储器时钟
文件页数/大小: 752 页 / 2557 K
品牌: HITACHI [ HITACHI SEMICONDUCTOR ]
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7.7.4  
Input Pull-Up Transistors  
Port 6 has built-in programmable input pull-up transistors. The pull-up for each bit can be turned  
on and off individually. To turn on an input pull-up, set the corresponding KMPCR bit to 1 and  
clear the corresponding P6DDR bit to 0. KMPCR is cleared to H'00 by a reset and in hardware  
standby mode, turning all input pull-ups off. In software standby mode, the previous state is  
maintained.  
Table 7.14 indicates the states of the input pull-up transistors in each operating mode.  
Table 7.14 States of Input Pull-Up Transistors (Port 6)  
Mode  
Reset  
Off  
Hardware Standby  
Software Standby  
On/off  
Other Operating Modes  
1
2
3
Off  
Off  
Off  
On/off  
On/off  
On/off  
Off  
On/off  
Off  
On/off  
Notes: Off:  
The input pull-up transistor is always off.  
On/off: The input pull-up transistor is on if KMPCR = 1 and P6DDR = 0, but off otherwise.  
134  
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