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89C51RB2-UM 参数 Datasheet PDF下载

89C51RB2-UM图片预览
型号: 89C51RB2-UM
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器,带有16K / 32K字节的闪存 [8-bit Microcontroller with 16K/ 32K Bytes Flash]
分类和应用: 闪存微控制器
文件页数/大小: 127 页 / 1478 K
品牌: ATMEL [ ATMEL ]
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AT89C51RB2/RC2  
Table 48. IPL1 Register  
IPL1 - Interrupt Priority Register (B2h)  
7
-
6
-
5
-
4
-
3
-
2
1
-
0
SPIL  
KBDL  
Bit  
Bit  
Number  
Mnemonic Description  
Reserved  
7
6
5
4
3
2
1
0
-
The value read from this bit is indeterminate. Do not set this bit.  
Reserved  
-
The value read from this bit is indeterminate. Do not set this bit.  
Reserved  
-
The value read from this bit is indeterminate. Do not set this bit.  
Reserved  
-
The value read from this bit is indeterminate. Do not set this bit.  
Reserved  
-
The value read from this bit is indeterminate. Do not set this bit.  
SPI Interrupt Priority Bit  
see SPIH for priority level.  
SPIL  
-
Reserved  
The value read from this bit is indeterminate. Do not set this bit.  
Keyboard Interrupt Priority Bit  
see KBDH for priority level.  
KBDL  
Reset Value = XXXX X000b  
Bit addressable  
61  
4180E–8051–10/06  
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