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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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Port 4 Data Register (P4DR)  
Bit  
7
P47  
0
6
P46  
0
5
P45  
0
4
P44  
0
3
P43  
0
2
P42  
0
1
P41  
0
0
P40  
0
Initial value  
Read/Write  
R/W  
R/W  
R/W  
R/W  
R/W  
R/W  
R/W  
R/W  
P4DR is an 8-bit register that stores data for pins P47 to P40. When a P4DDR bit is set to 1, if port  
4 is read, the value in P4DR is obtained directly, regardless of the actual pin state. When a P4DDR  
bit is cleared to 0, if port 4 is read the pin state is obtained. This also applies to pins used by on-  
chip supporting modules.  
P4DR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode it  
retains its existing values.  
123  
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