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AT89C51RC2-3CSIM Datasheet(PDF) 66 Page - ATMEL Corporation

Part # AT89C51RC2-3CSIM
Description  Microcontroller with 16K/32K Bytes Flash
PDF  127 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C51RC2-3CSIM Datasheet(HTML) 66 Page - ATMEL Corporation

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AT89C51RB2/RC2
4180C–8051–12/03
Table 52. KBE Register
KBE - Keyboard Input Enable Register (9Dh)
Reset Value = 0000 0000b
76
54
32
1
0
KBE7
KBE6
KBE5
KBE4
KBE3
KBE2
KBE1
KBE0
Bit
Number
Bit
Mnemonic
Description
7
KBE7
Keyboard Line 7 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 7 bit in KBF register to generate an interrupt request.
6
KBE6
Keyboard Line 6 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 6 bit in KBF register to generate an interrupt request.
5
KBE5
Keyboard Line 5 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 5 bit in KBF register to generate an interrupt request.
4
KBE4
Keyboard Line 4 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 4 bit in KBF register to generate an interrupt request.
3
KBE3
Keyboard Line 3 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 3 bit in KBF register to generate an interrupt request.
2
KBE2
Keyboard Line 2 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 2 bit in KBF register to generate an interrupt request.
1
KBE1
Keyboard Line 1 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 1 bit in KBF register to generate an interrupt request.
0
KBE0
Keyboard Line 0 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 0 bit in KBF register to generate an interrupt request.



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